logger improvements

Signed-off-by: Vasiliy Tolstov <v.tolstov@unistack.org>

.github/workflows/build.yml

@@ -1,6 +1,6 @@
 name: build
 on:
- push:
+  push:
     branches:
     - master
 jobs:
@@ -12,20 +12,36 @@ jobs:
       uses: actions/setup-go@v1
       with:
         go-version: 1.15
-    - name: checkout
-      uses: actions/checkout@v2
     - name: cache
       uses: actions/cache@v2
       with:
         path: ~/go/pkg/mod
         key: ${{ runner.os }}-go-${{ hashFiles('**/go.sum') }}
         restore-keys: ${{ runner.os }}-go-
-    - name: deps
+    - name: sdk checkout
+      uses: actions/checkout@v2
+    - name: sdk deps
       run: go get -v -t -d ./...
-    - name: test
+    - name: sdk test
       env:
         INTEGRATION_TESTS: yes
       run: go test -mod readonly -v ./...
+    - name: tests checkout
+      uses: actions/checkout@v2
+      with:
+        repository: unistack-org/micro-tests
+        ref: refs/heads/master
+        path: micro-tests
+        fetch-depth: 1
+    - name: tests deps
+      run: |
+        cd micro-tests
+        go mod edit -replace="github.com/unistack-org/micro/v3=../"
+        go get -v -t -d ./...
+    - name: tests test
+      env:
+        INTEGRATION_TESTS: yes
+      run: cd micro-tests && go test -mod readonly -v ./...
   lint:
     name: lint
     runs-on: ubuntu-latest

.github/workflows/pr.yml

@@ -12,20 +12,36 @@ jobs:
       uses: actions/setup-go@v1
       with:
         go-version: 1.15
-    - name: checkout
-      uses: actions/checkout@v2
     - name: cache
       uses: actions/cache@v2
       with:
         path: ~/go/pkg/mod
         key: ${{ runner.os }}-go-${{ hashFiles('**/go.sum') }}
         restore-keys: ${{ runner.os }}-go-
-    - name: deps
+    - name: sdk checkout
+      uses: actions/checkout@v2
+    - name: sdk deps
       run: go get -v -t -d ./...
-    - name: test
+    - name: sdk test
       env:
         INTEGRATION_TESTS: yes
       run: go test -mod readonly -v ./...
+    - name: tests checkout
+      uses: actions/checkout@v2
+      with:
+        repository: unistack-org/micro-tests
+        ref: refs/heads/master
+        path: micro-tests
+        fetch-depth: 1
+    - name: tests deps
+      run: |
+        cd micro-tests
+        go mod edit -replace="github.com/unistack-org/micro/v3=../"
+        go get -v -t -d ./...
+    - name: tests test
+      env:
+        INTEGRATION_TESTS: yes
+      run: cd micro-tests && go test -mod readonly -v ./...
   lint:
     name: lint
     runs-on: ubuntu-latest

README.md

@@ -1,4 +1,4 @@
-# Micro [![License](https://img.shields.io/:license-apache-blue.svg)](https://opensource.org/licenses/Apache-2.0) [![Doc](https://img.shields.io/badge/go.dev-reference-007d9c?logo=go&logoColor=white&style=flat-square)](https://pkg.go.dev/github.com/unistack-org/micro/v3?tab=overview) [![Status](https://github.com/unistack-org/micro/workflows/build/badge.svg?branch=master)](https://github.com/unistack-org/micro/actions?query=workflow%3Abuild+branch%3Amaster+event%3Apush) [![Lint](https://goreportcard.com/badge/github.com/unistack-org/micro)](https://goreportcard.com/report/github.com/unistack-org/micro)
+# Micro [![License](https://img.shields.io/:license-apache-blue.svg)](https://opensource.org/licenses/Apache-2.0) [![Doc](https://img.shields.io/badge/go.dev-reference-007d9c?logo=go&logoColor=white&style=flat-square)](https://pkg.go.dev/github.com/unistack-org/micro/v3?tab=overview) [![Status](https://github.com/unistack-org/micro/workflows/build/badge.svg?branch=master)](https://github.com/unistack-org/micro/actions?query=workflow%3Abuild+branch%3Amaster+event%3Apush) [![Lint](https://goreportcard.com/badge/github.com/unistack-org/micro)](https://goreportcard.com/report/github.com/unistack-org/micro) [![Slack](https://img.shields.io/static/v1?label=micro&message=slack&color=blueviolet)](https://unistack-org.slack.com/messages/default)
 
 Micro is a standard library for microservices.
 

api/handler/rpc/rpc.go

@@ -10,13 +10,13 @@ import (
 
 	jsonpatch "github.com/evanphx/json-patch/v5"
 	"github.com/oxtoacart/bpool"
+	jsonrpc "github.com/unistack-org/micro-codec-jsonrpc"
+	protorpc "github.com/unistack-org/micro-codec-protorpc"
 	"github.com/unistack-org/micro/v3/api"
 	"github.com/unistack-org/micro/v3/api/handler"
 	"github.com/unistack-org/micro/v3/api/internal/proto"
 	"github.com/unistack-org/micro/v3/client"
 	"github.com/unistack-org/micro/v3/codec"
-	"github.com/unistack-org/micro/v3/codec/jsonrpc"
-	"github.com/unistack-org/micro/v3/codec/protorpc"
 	"github.com/unistack-org/micro/v3/errors"
 	"github.com/unistack-org/micro/v3/logger"
 	"github.com/unistack-org/micro/v3/metadata"
@@ -224,7 +224,7 @@ func requestPayload(r *http.Request) ([]byte, error) {
 	case strings.Contains(ct, "application/json-rpc"):
 		msg := codec.Message{
 			Type:   codec.Request,
-			Header: make(map[string]string),
+			Header: metadata.New(0),
 		}
 		c := jsonrpc.NewCodec(&buffer{r.Body})
 		if err = c.ReadHeader(&msg, codec.Request); err != nil {
@@ -238,7 +238,7 @@ func requestPayload(r *http.Request) ([]byte, error) {
 	case strings.Contains(ct, "application/proto-rpc"), strings.Contains(ct, "application/octet-stream"):
 		msg := codec.Message{
 			Type:   codec.Request,
-			Header: make(map[string]string),
+			Header: metadata.New(0),
 		}
 		c := protorpc.NewCodec(&buffer{r.Body})
 		if err = c.ReadHeader(&msg, codec.Request); err != nil {
@@ -250,10 +250,12 @@ func requestPayload(r *http.Request) ([]byte, error) {
 		}
 		return raw.Marshal()
 	case strings.Contains(ct, "application/www-x-form-urlencoded"):
-		r.ParseForm()
+		if err = r.ParseForm(); err != nil {
+			return nil, err
+		}
 
 		// generate a new set of values from the form
-		vals := make(map[string]string)
+		vals := make(map[string]string, len(r.Form))
 		for k, v := range r.Form {
 			vals[k] = strings.Join(v, ",")
 		}
@@ -268,7 +270,7 @@ func requestPayload(r *http.Request) ([]byte, error) {
 	// dont user metadata.FromContext as it mangles names
 	md, ok := metadata.FromContext(ctx)
 	if !ok {
-		md = make(map[string]string)
+		md = metadata.New(0)
 	}
 
 	// allocate maximum
@@ -444,8 +446,8 @@ func writeError(w http.ResponseWriter, r *http.Request, err error) {
 
 	_, werr := w.Write([]byte(ce.Error()))
 	if werr != nil {
-		if logger.V(logger.ErrorLevel, logger.DefaultLogger) {
+		if logger.V(logger.ErrorLevel) {
-			logger.Error(werr)
+			logger.Error(werr.Error())
 		}
 	}
 }
@@ -470,8 +472,8 @@ func writeResponse(w http.ResponseWriter, r *http.Request, rsp []byte) {
 	// write response
 	_, err := w.Write(rsp)
 	if err != nil {
-		if logger.V(logger.ErrorLevel, logger.DefaultLogger) {
+		if logger.V(logger.ErrorLevel) {
-			logger.Error(err)
+			logger.Error(err.Error())
 		}
 	}
 

api/handler/rpc/rpc_test.go

@@ -2,12 +2,12 @@ package rpc
 
 import (
 	"bytes"
-	"encoding/json"
 	"net/http"
 	"testing"
 
-	"github.com/golang/protobuf/proto"
 	go_api "github.com/unistack-org/micro/v3/api/proto"
+	jsonpb "google.golang.org/protobuf/encoding/protojson"
+	"google.golang.org/protobuf/proto"
 )
 
 func TestRequestPayloadFromRequest(t *testing.T) {
@@ -22,7 +22,7 @@ func TestRequestPayloadFromRequest(t *testing.T) {
 		t.Fatal("Failed to marshal proto", err)
 	}
 
-	jsonBytes, err := json.Marshal(protoEvent)
+	jsonBytes, err := jsonpb.Marshal(&protoEvent)
 	if err != nil {
 		t.Fatal("Failed to marshal proto to JSON ", err)
 	}

api/handler/rpc/stream.go

@@ -44,13 +44,15 @@ func serveWebsocket(ctx context.Context, w http.ResponseWriter, r *http.Request,
 			case "binary":
 				hdr["Sec-WebSocket-Protocol"] = []string{"binary"}
 				op = ws.OpBinary
+			default:
+				op = ws.OpBinary
 			}
 		}
 	}
 	payload, err := requestPayload(r)
 	if err != nil {
-		if logger.V(logger.ErrorLevel, logger.DefaultLogger) {
+		if logger.V(logger.ErrorLevel) {
-			logger.Error(err)
+			logger.Error(err.Error())
 		}
 		return
 	}
@@ -72,16 +74,16 @@ func serveWebsocket(ctx context.Context, w http.ResponseWriter, r *http.Request,
 
 	conn, rw, _, err := upgrader.Upgrade(r, w)
 	if err != nil {
-		if logger.V(logger.ErrorLevel, logger.DefaultLogger) {
+		if logger.V(logger.ErrorLevel) {
-			logger.Error(err)
+			logger.Error(err.Error())
 		}
 		return
 	}
 
 	defer func() {
 		if err := conn.Close(); err != nil {
-			if logger.V(logger.ErrorLevel, logger.DefaultLogger) {
+			if logger.V(logger.ErrorLevel) {
-				logger.Error(err)
+				logger.Error(err.Error())
 			}
 			return
 		}
@@ -116,16 +118,16 @@ func serveWebsocket(ctx context.Context, w http.ResponseWriter, r *http.Request,
 	// create a new stream
 	stream, err := c.Stream(ctx, req, callOpt)
 	if err != nil {
-		if logger.V(logger.ErrorLevel, logger.DefaultLogger) {
+		if logger.V(logger.ErrorLevel) {
-			logger.Error(err)
+			logger.Error(err.Error())
 		}
 		return
 	}
 
 	if request != nil {
 		if err = stream.Send(request); err != nil {
-			if logger.V(logger.ErrorLevel, logger.DefaultLogger) {
+			if logger.V(logger.ErrorLevel) {
-				logger.Error(err)
+				logger.Error(err.Error())
 			}
 			return
 		}
@@ -150,22 +152,22 @@ func serveWebsocket(ctx context.Context, w http.ResponseWriter, r *http.Request,
 				if strings.Contains(err.Error(), "context canceled") {
 					return
 				}
-				if logger.V(logger.ErrorLevel, logger.DefaultLogger) {
+				if logger.V(logger.ErrorLevel) {
-					logger.Error(err)
+					logger.Error(err.Error())
 				}
 				return
 			}
 
 			// write the response
 			if err := wsutil.WriteServerMessage(rw, op, buf); err != nil {
-				if logger.V(logger.ErrorLevel, logger.DefaultLogger) {
+				if logger.V(logger.ErrorLevel) {
-					logger.Error(err)
+					logger.Error(err.Error())
 				}
 				return
 			}
 			if err = rw.Flush(); err != nil {
-				if logger.V(logger.ErrorLevel, logger.DefaultLogger) {
+				if logger.V(logger.ErrorLevel) {
-					logger.Error(err)
+					logger.Error(err.Error())
 				}
 				return
 			}
@@ -195,8 +197,8 @@ func writeLoop(rw io.ReadWriter, stream client.Stream) {
 						return
 					}
 				}
-				if logger.V(logger.ErrorLevel, logger.DefaultLogger) {
+				if logger.V(logger.ErrorLevel) {
-					logger.Error(err)
+					logger.Error(err.Error())
 				}
 				return
 			}
@@ -212,8 +214,8 @@ func writeLoop(rw io.ReadWriter, stream client.Stream) {
 			// if the extracted payload isn't empty lets use it
 			request := &raw.Frame{Data: buf}
 			if err := stream.Send(request); err != nil {
-				if logger.V(logger.ErrorLevel, logger.DefaultLogger) {
+				if logger.V(logger.ErrorLevel) {
-					logger.Error(err)
+					logger.Error(err.Error())
 				}
 				return
 			}

api/resolver/grpc/grpc.go

@@ -9,10 +9,12 @@ import (
 	"github.com/unistack-org/micro/v3/api/resolver"
 )
 
+// Resolver struct
 type Resolver struct {
 	opts resolver.Options
 }
 
+// Resolve func to resolve enndpoint
 func (r *Resolver) Resolve(req *http.Request, opts ...resolver.ResolveOption) (*resolver.Endpoint, error) {
 	// parse options
 	options := resolver.NewResolveOptions(opts...)
@@ -39,6 +41,7 @@ func (r *Resolver) String() string {
 	return "grpc"
 }
 
+// NewResolver is used to create new Resolver
 func NewResolver(opts ...resolver.Option) resolver.Resolver {
 	return &Resolver{opts: resolver.NewOptions(opts...)}
 }

api/resolver/options.go

@@ -4,11 +4,13 @@ import (
 	"github.com/unistack-org/micro/v3/registry"
 )
 
+// Options struct
 type Options struct {
 	Handler       string
 	ServicePrefix string
 }
 
+// Option func
 type Option func(o *Options)
 
 // WithHandler sets the handler being used
@@ -27,7 +29,7 @@ func WithServicePrefix(p string) Option {
 
 // NewOptions returns new initialised options
 func NewOptions(opts ...Option) Options {
-	var options Options
+	options := Options{}
 	for _, o := range opts {
 		o(&options)
 	}
@@ -51,13 +53,10 @@ func Domain(n string) ResolveOption {
 
 // NewResolveOptions returns new initialised resolve options
 func NewResolveOptions(opts ...ResolveOption) ResolveOptions {
-	var options ResolveOptions
+	options := ResolveOptions{Domain: registry.DefaultDomain}
 	for _, o := range opts {
 		o(&options)
 	}
-	if len(options.Domain) == 0 {
-		options.Domain = registry.DefaultDomain
-	}
 
 	return options
 }

api/resolver/resolver.go

@@ -7,7 +7,9 @@ import (
 )
 
 var (
-	ErrNotFound    = errors.New("not found")
+	// ErrNotFound returned when endpoint is not found
+	ErrNotFound = errors.New("not found")
+	// ErrInvalidPath returned on invalid path
 	ErrInvalidPath = errors.New("invalid path")
 )
 
@@ -19,7 +21,7 @@ type Resolver interface {
 
 // Endpoint is the endpoint for a http request
 type Endpoint struct {
-	// e.g greeter
+	// Endpoint name e.g greeter
 	Name string
 	// HTTP Host e.g example.com
 	Host string

api/resolver/subdomain/subdomain.go

@@ -54,7 +54,9 @@ func (r *Resolver) Domain(req *http.Request) string {
 	// extract the top level domain plus one (e.g. 'myapp.com')
 	domain, err := publicsuffix.EffectiveTLDPlusOne(host)
 	if err != nil {
-		logger.Debugf("Unable to extract domain from %v", host)
+		if logger.V(logger.DebugLevel) {
+			logger.Debug("Unable to extract domain from %v", host)
+		}
 		return ""
 	}
 

api/router/options.go

@@ -1,6 +1,8 @@
 package router
 
 import (
+	"context"
+
 	"github.com/unistack-org/micro/v3/api/resolver"
 	"github.com/unistack-org/micro/v3/api/resolver/vpath"
 	"github.com/unistack-org/micro/v3/registry"
@@ -10,12 +12,14 @@ type Options struct {
 	Handler  string
 	Registry registry.Registry
 	Resolver resolver.Resolver
+	Context  context.Context
 }
 
 type Option func(o *Options)
 
 func NewOptions(opts ...Option) Options {
 	options := Options{
+		Context: context.Background(),
 		Handler: "meta",
 	}
 
@@ -32,18 +36,28 @@ func NewOptions(opts ...Option) Options {
 	return options
 }
 
+// WithContext sets the context
+func WithContext(ctx context.Context) Option {
+	return func(o *Options) {
+		o.Context = ctx
+	}
+}
+
+// WithHandler sets the handler
 func WithHandler(h string) Option {
 	return func(o *Options) {
 		o.Handler = h
 	}
 }
 
+// WithRegistry sets the registry
 func WithRegistry(r registry.Registry) Option {
 	return func(o *Options) {
 		o.Registry = r
 	}
 }
 
+// WithResolver sets the resolver
 func WithResolver(r resolver.Resolver) Option {
 	return func(o *Options) {
 		o.Resolver = r

api/router/registry/registry.go

@@ -1,498 +0,0 @@
-// Package registry provides a dynamic api service router
-package registry
-
-import (
-	"errors"
-	"fmt"
-	"net/http"
-	"regexp"
-	"strings"
-	"sync"
-	"time"
-
-	"github.com/unistack-org/micro/v3/api"
-	"github.com/unistack-org/micro/v3/api/router"
-	"github.com/unistack-org/micro/v3/logger"
-	"github.com/unistack-org/micro/v3/metadata"
-	"github.com/unistack-org/micro/v3/registry"
-	util "github.com/unistack-org/micro/v3/util/router"
-)
-
-// endpoint struct, that holds compiled pcre
-type endpoint struct {
-	hostregs []*regexp.Regexp
-	pathregs []util.Pattern
-	pcreregs []*regexp.Regexp
-}
-
-// router is the default router
-type registryRouter struct {
-	exit chan bool
-	opts router.Options
-
-	sync.RWMutex
-	eps map[string]*api.Service
-	// compiled regexp for host and path
-	ceps map[string]*endpoint
-}
-
-func (r *registryRouter) isClosed() bool {
-	select {
-	case <-r.exit:
-		return true
-	default:
-		return false
-	}
-}
-
-// refresh list of api services
-func (r *registryRouter) refresh() {
-	var attempts int
-
-	for {
-		services, err := r.opts.Registry.ListServices()
-		if err != nil {
-			attempts++
-			if logger.V(logger.ErrorLevel, logger.DefaultLogger) {
-				logger.Errorf("unable to list services: %v", err)
-			}
-			time.Sleep(time.Duration(attempts) * time.Second)
-			continue
-		}
-
-		attempts = 0
-
-		// for each service, get service and store endpoints
-		for _, s := range services {
-			service, err := r.opts.Registry.GetService(s.Name)
-			if err != nil {
-				if logger.V(logger.ErrorLevel, logger.DefaultLogger) {
-					logger.Errorf("unable to get service: %v", err)
-				}
-				continue
-			}
-			r.store(service)
-		}
-
-		// refresh list in 10 minutes... cruft
-		// use registry watching
-		select {
-		case <-time.After(time.Minute * 10):
-		case <-r.exit:
-			return
-		}
-	}
-}
-
-// process watch event
-func (r *registryRouter) process(res *registry.Result) {
-	// skip these things
-	if res == nil || res.Service == nil {
-		return
-	}
-
-	// get entry from cache
-	service, err := r.opts.Registry.GetService(res.Service.Name)
-	if err != nil {
-		if logger.V(logger.ErrorLevel, logger.DefaultLogger) {
-			logger.Errorf("unable to get %v service: %v", res.Service.Name, err)
-		}
-		return
-	}
-
-	// update our local endpoints
-	r.store(service)
-}
-
-// store local endpoint cache
-func (r *registryRouter) store(services []*registry.Service) {
-	// endpoints
-	eps := map[string]*api.Service{}
-
-	// services
-	names := map[string]bool{}
-
-	// create a new endpoint mapping
-	for _, service := range services {
-		// set names we need later
-		names[service.Name] = true
-
-		// map per endpoint
-		for _, sep := range service.Endpoints {
-			// create a key service:endpoint_name
-			key := fmt.Sprintf("%s.%s", service.Name, sep.Name)
-			// decode endpoint
-			end := api.Decode(sep.Metadata)
-			// no endpoint or no name
-			if end == nil || len(end.Name) == 0 {
-				continue
-			}
-			// if we got nothing skip
-			if err := api.Validate(end); err != nil {
-				if logger.V(logger.TraceLevel, logger.DefaultLogger) {
-					logger.Tracef("endpoint validation failed: %v", err)
-				}
-				continue
-			}
-
-			// try get endpoint
-			ep, ok := eps[key]
-			if !ok {
-				ep = &api.Service{Name: service.Name}
-			}
-
-			// overwrite the endpoint
-			ep.Endpoint = end
-			// append services
-			ep.Services = append(ep.Services, service)
-			// store it
-			eps[key] = ep
-		}
-	}
-
-	r.Lock()
-	defer r.Unlock()
-
-	// delete any existing eps for services we know
-	for key, service := range r.eps {
-		// skip what we don't care about
-		if !names[service.Name] {
-			continue
-		}
-
-		// ok we know this thing
-		// delete delete delete
-		delete(r.eps, key)
-	}
-
-	// now set the eps we have
-	for name, ep := range eps {
-		r.eps[name] = ep
-		cep := &endpoint{}
-
-		for _, h := range ep.Endpoint.Host {
-			if h == "" || h == "*" {
-				continue
-			}
-			hostreg, err := regexp.CompilePOSIX(h)
-			if err != nil {
-				if logger.V(logger.TraceLevel, logger.DefaultLogger) {
-					logger.Tracef("endpoint have invalid host regexp: %v", err)
-				}
-				continue
-			}
-			cep.hostregs = append(cep.hostregs, hostreg)
-		}
-
-		for _, p := range ep.Endpoint.Path {
-			var pcreok bool
-
-			if p[0] == '^' && p[len(p)-1] == '$' {
-				pcrereg, err := regexp.CompilePOSIX(p)
-				if err == nil {
-					cep.pcreregs = append(cep.pcreregs, pcrereg)
-					pcreok = true
-				}
-			}
-
-			rule, err := util.Parse(p)
-			if err != nil && !pcreok {
-				if logger.V(logger.TraceLevel, logger.DefaultLogger) {
-					logger.Tracef("endpoint have invalid path pattern: %v", err)
-				}
-				continue
-			} else if err != nil && pcreok {
-				continue
-			}
-
-			tpl := rule.Compile()
-			pathreg, err := util.NewPattern(tpl.Version, tpl.OpCodes, tpl.Pool, "")
-			if err != nil {
-				if logger.V(logger.TraceLevel, logger.DefaultLogger) {
-					logger.Tracef("endpoint have invalid path pattern: %v", err)
-				}
-				continue
-			}
-			cep.pathregs = append(cep.pathregs, pathreg)
-		}
-
-		r.ceps[name] = cep
-	}
-}
-
-// watch for endpoint changes
-func (r *registryRouter) watch() {
-	var attempts int
-
-	for {
-		if r.isClosed() {
-			return
-		}
-
-		// watch for changes
-		w, err := r.opts.Registry.Watch()
-		if err != nil {
-			attempts++
-			if logger.V(logger.ErrorLevel, logger.DefaultLogger) {
-				logger.Errorf("error watching endpoints: %v", err)
-			}
-			time.Sleep(time.Duration(attempts) * time.Second)
-			continue
-		}
-
-		ch := make(chan bool)
-
-		go func() {
-			select {
-			case <-ch:
-				w.Stop()
-			case <-r.exit:
-				w.Stop()
-			}
-		}()
-
-		// reset if we get here
-		attempts = 0
-
-		for {
-			// process next event
-			res, err := w.Next()
-			if err != nil {
-				if logger.V(logger.ErrorLevel, logger.DefaultLogger) {
-					logger.Errorf("error getting next endpoint: %v", err)
-				}
-				close(ch)
-				break
-			}
-			r.process(res)
-		}
-	}
-}
-
-func (r *registryRouter) Options() router.Options {
-	return r.opts
-}
-
-func (r *registryRouter) Close() error {
-	select {
-	case <-r.exit:
-		return nil
-	default:
-		close(r.exit)
-	}
-	return nil
-}
-
-func (r *registryRouter) Register(ep *api.Endpoint) error {
-	return nil
-}
-
-func (r *registryRouter) Deregister(ep *api.Endpoint) error {
-	return nil
-}
-
-func (r *registryRouter) Endpoint(req *http.Request) (*api.Service, error) {
-	if r.isClosed() {
-		return nil, errors.New("router closed")
-	}
-
-	r.RLock()
-	defer r.RUnlock()
-
-	var idx int
-	if len(req.URL.Path) > 0 && req.URL.Path != "/" {
-		idx = 1
-	}
-	path := strings.Split(req.URL.Path[idx:], "/")
-
-	// use the first match
-	// TODO: weighted matching
-	for n, e := range r.eps {
-		cep, ok := r.ceps[n]
-		if !ok {
-			continue
-		}
-		ep := e.Endpoint
-		var mMatch, hMatch, pMatch bool
-		// 1. try method
-		for _, m := range ep.Method {
-			if m == req.Method {
-				mMatch = true
-				break
-			}
-		}
-		if !mMatch {
-			continue
-		}
-		if logger.V(logger.DebugLevel, logger.DefaultLogger) {
-			logger.Debugf("api method match %s", req.Method)
-		}
-
-		// 2. try host
-		if len(ep.Host) == 0 {
-			hMatch = true
-		} else {
-			for idx, h := range ep.Host {
-				if h == "" || h == "*" {
-					hMatch = true
-					break
-				} else {
-					if cep.hostregs[idx].MatchString(req.URL.Host) {
-						hMatch = true
-						break
-					}
-				}
-			}
-		}
-		if !hMatch {
-			continue
-		}
-		if logger.V(logger.DebugLevel, logger.DefaultLogger) {
-			logger.Debugf("api host match %s", req.URL.Host)
-		}
-
-		// 3. try path via google.api path matching
-		for _, pathreg := range cep.pathregs {
-			matches, err := pathreg.Match(path, "")
-			if err != nil {
-				if logger.V(logger.DebugLevel, logger.DefaultLogger) {
-					logger.Debugf("api gpath not match %s != %v", path, pathreg)
-				}
-				continue
-			}
-			if logger.V(logger.DebugLevel, logger.DefaultLogger) {
-				logger.Debugf("api gpath match %s = %v", path, pathreg)
-			}
-			pMatch = true
-			ctx := req.Context()
-			md, ok := metadata.FromContext(ctx)
-			if !ok {
-				md = make(metadata.Metadata)
-			}
-			for k, v := range matches {
-				md[fmt.Sprintf("x-api-field-%s", k)] = v
-			}
-			md["x-api-body"] = ep.Body
-			*req = *req.Clone(metadata.NewContext(ctx, md))
-			break
-		}
-
-		if !pMatch {
-			// 4. try path via pcre path matching
-			for _, pathreg := range cep.pcreregs {
-				if !pathreg.MatchString(req.URL.Path) {
-					if logger.V(logger.DebugLevel, logger.DefaultLogger) {
-						logger.Debugf("api pcre path not match %s != %v", path, pathreg)
-					}
-					continue
-				}
-				if logger.V(logger.DebugLevel, logger.DefaultLogger) {
-					logger.Debugf("api pcre path match %s != %v", path, pathreg)
-				}
-				pMatch = true
-				break
-			}
-		}
-
-		if !pMatch {
-			continue
-		}
-
-		// TODO: Percentage traffic
-		// we got here, so its a match
-		return e, nil
-	}
-
-	// no match
-	return nil, errors.New("not found")
-}
-
-func (r *registryRouter) Route(req *http.Request) (*api.Service, error) {
-	if r.isClosed() {
-		return nil, errors.New("router closed")
-	}
-
-	// try get an endpoint
-	ep, err := r.Endpoint(req)
-	if err == nil {
-		return ep, nil
-	}
-
-	// error not nil
-	// ignore that shit
-	// TODO: don't ignore that shit
-
-	// get the service name
-	rp, err := r.opts.Resolver.Resolve(req)
-	if err != nil {
-		return nil, err
-	}
-
-	// service name
-	name := rp.Name
-
-	// get service
-	services, err := r.opts.Registry.GetService(name, registry.GetDomain(rp.Domain))
-	if err != nil {
-		return nil, err
-	}
-
-	// only use endpoint matching when the meta handler is set aka api.Default
-	switch r.opts.Handler {
-	// rpc handlers
-	case "meta", "api", "rpc":
-		handler := r.opts.Handler
-
-		// set default handler to api
-		if r.opts.Handler == "meta" {
-			handler = "rpc"
-		}
-
-		// construct api service
-		return &api.Service{
-			Name: name,
-			Endpoint: &api.Endpoint{
-				Name:    rp.Method,
-				Handler: handler,
-			},
-			Services: services,
-		}, nil
-	// http handler
-	case "http", "proxy", "web":
-		// construct api service
-		return &api.Service{
-			Name: name,
-			Endpoint: &api.Endpoint{
-				Name:    req.URL.String(),
-				Handler: r.opts.Handler,
-				Host:    []string{req.Host},
-				Method:  []string{req.Method},
-				Path:    []string{req.URL.Path},
-			},
-			Services: services,
-		}, nil
-	}
-
-	return nil, errors.New("unknown handler")
-}
-
-func newRouter(opts ...router.Option) (*registryRouter, error) {
-	options := router.NewOptions(opts...)
-	if options.Registry == nil {
-		return nil, fmt.Errorf("registry is not set")
-	}
-	r := &registryRouter{
-		exit: make(chan bool),
-		opts: options,
-		eps:  make(map[string]*api.Service),
-		ceps: make(map[string]*endpoint),
-	}
-	go r.watch()
-	go r.refresh()
-	return r, nil
-}
-
-// NewRouter returns the default router
-func NewRouter(opts ...router.Option) (router.Router, error) {
-	return newRouter(opts...)
-}

api/router/registry/registry_test.go

@@ -1,38 +0,0 @@
-package registry
-
-import (
-	"testing"
-
-	"github.com/stretchr/testify/assert"
-	"github.com/unistack-org/micro/v3/registry"
-)
-
-func TestStoreRegex(t *testing.T) {
-	t.Skip()
-	router, err := newRouter()
-	if err != nil {
-		t.Fatal(err)
-	}
-	router.store([]*registry.Service{
-		{
-			Name:    "Foobar",
-			Version: "latest",
-			Endpoints: []*registry.Endpoint{
-				{
-					Name: "foo",
-					Metadata: map[string]string{
-						"endpoint":    "FooEndpoint",
-						"description": "Some description",
-						"method":      "POST",
-						"path":        "^/foo/$",
-						"handler":     "rpc",
-					},
-				},
-			},
-			Metadata: map[string]string{},
-		},
-	},
-	)
-
-	assert.Len(t, router.ceps["Foobar.foo"].pcreregs, 1)
-}

api/router/router_test.go

@@ -1,257 +0,0 @@
-// +build ignore
-
-package router_test
-
-import (
-	"context"
-	"fmt"
-	"io/ioutil"
-	"log"
-	"net/http"
-	"testing"
-	"time"
-
-	"github.com/unistack-org/micro/v3/api"
-	"github.com/unistack-org/micro/v3/api/handler"
-	"github.com/unistack-org/micro/v3/api/handler/rpc"
-	"github.com/unistack-org/micro/v3/api/router"
-	rregistry "github.com/unistack-org/micro/v3/api/router/registry"
-	rstatic "github.com/unistack-org/micro/v3/api/router/static"
-	"github.com/unistack-org/micro/v3/broker"
-	bmemory "github.com/unistack-org/micro/v3/broker/memory"
-	"github.com/unistack-org/micro/v3/client"
-	gcli "github.com/unistack-org/micro/v3/client/grpc"
-	rmemory "github.com/unistack-org/micro/v3/registry/memory"
-	rt "github.com/unistack-org/micro/v3/router"
-	regRouter "github.com/unistack-org/micro/v3/router/registry"
-	"github.com/unistack-org/micro/v3/server"
-	gsrv "github.com/unistack-org/micro/v3/server/grpc"
-	pb "github.com/unistack-org/micro/v3/server/grpc/proto"
-)
-
-// server is used to implement helloworld.GreeterServer.
-type testServer struct {
-}
-
-// TestHello implements helloworld.GreeterServer
-func (s *testServer) Call(ctx context.Context, req *pb.Request, rsp *pb.Response) error {
-	rsp.Msg = "Hello " + req.Uuid
-	return nil
-}
-
-// TestHello implements helloworld.GreeterServer
-func (s *testServer) CallPcre(ctx context.Context, req *pb.Request, rsp *pb.Response) error {
-	rsp.Msg = "Hello " + req.Uuid
-	return nil
-}
-
-// TestHello implements helloworld.GreeterServer
-func (s *testServer) CallPcreInvalid(ctx context.Context, req *pb.Request, rsp *pb.Response) error {
-	rsp.Msg = "Hello " + req.Uuid
-	return nil
-}
-
-func initial(t *testing.T) (server.Server, client.Client) {
-	r := rmemory.NewRegistry()
-	b := bmemory.NewBroker(broker.Registry(r))
-
-	// create a new client
-	s := gsrv.NewServer(
-		server.Name("foo"),
-		server.Broker(b),
-		server.Registry(r),
-	)
-
-	rtr := regRouter.NewRouter(
-		rt.Registry(r),
-	)
-
-	// create a new server
-	c := gcli.NewClient(
-		client.Router(rtr),
-		client.Broker(b),
-	)
-
-	h := &testServer{}
-	pb.RegisterTestHandler(s, h)
-
-	if err := s.Start(); err != nil {
-		t.Fatalf("failed to start: %v", err)
-	}
-
-	return s, c
-}
-
-func check(t *testing.T, addr string, path string, expected string) {
-	req, err := http.NewRequest("POST", fmt.Sprintf(path, addr), nil)
-	if err != nil {
-		t.Fatalf("Failed to created http.Request: %v", err)
-	}
-	req.Header.Set("Content-Type", "application/json")
-	rsp, err := (&http.Client{}).Do(req)
-	if err != nil {
-		t.Fatalf("Failed to created http.Request: %v", err)
-	}
-	defer rsp.Body.Close()
-
-	buf, err := ioutil.ReadAll(rsp.Body)
-	if err != nil {
-		t.Fatal(err)
-	}
-
-	jsonMsg := expected
-	if string(buf) != jsonMsg {
-		t.Fatalf("invalid message received, parsing error %s != %s", buf, jsonMsg)
-	}
-}
-
-func TestRouterRegistryPcre(t *testing.T) {
-	s, c := initial(t)
-	defer s.Stop()
-
-	router := rregistry.NewRouter(
-		router.WithHandler(rpc.Handler),
-		router.WithRegistry(s.Options().Registry),
-	)
-	hrpc := rpc.NewHandler(
-		handler.WithClient(c),
-		handler.WithRouter(router),
-	)
-	hsrv := &http.Server{
-		Handler:        hrpc,
-		Addr:           "127.0.0.1:6543",
-		WriteTimeout:   15 * time.Second,
-		ReadTimeout:    15 * time.Second,
-		IdleTimeout:    20 * time.Second,
-		MaxHeaderBytes: 1024 * 1024 * 1, // 1Mb
-	}
-
-	go func() {
-		log.Println(hsrv.ListenAndServe())
-	}()
-
-	defer hsrv.Close()
-	time.Sleep(1 * time.Second)
-	check(t, hsrv.Addr, "http://%s/api/v0/test/call/TEST", `{"msg":"Hello TEST"}`)
-}
-
-func TestRouterStaticPcre(t *testing.T) {
-	s, c := initial(t)
-	defer s.Stop()
-
-	router := rstatic.NewRouter(
-		router.WithHandler(rpc.Handler),
-		router.WithRegistry(s.Options().Registry),
-	)
-
-	err := router.Register(&api.Endpoint{
-		Name:    "foo.Test.Call",
-		Method:  []string{"POST"},
-		Path:    []string{"^/api/v0/test/call/?$"},
-		Handler: "rpc",
-	})
-	if err != nil {
-		t.Fatal(err)
-	}
-
-	hrpc := rpc.NewHandler(
-		handler.WithClient(c),
-		handler.WithRouter(router),
-	)
-	hsrv := &http.Server{
-		Handler:        hrpc,
-		Addr:           "127.0.0.1:6543",
-		WriteTimeout:   15 * time.Second,
-		ReadTimeout:    15 * time.Second,
-		IdleTimeout:    20 * time.Second,
-		MaxHeaderBytes: 1024 * 1024 * 1, // 1Mb
-	}
-
-	go func() {
-		log.Println(hsrv.ListenAndServe())
-	}()
-	defer hsrv.Close()
-
-	time.Sleep(1 * time.Second)
-	check(t, hsrv.Addr, "http://%s/api/v0/test/call", `{"msg":"Hello "}`)
-}
-
-func TestRouterStaticGpath(t *testing.T) {
-	s, c := initial(t)
-	defer s.Stop()
-
-	router := rstatic.NewRouter(
-		router.WithHandler(rpc.Handler),
-		router.WithRegistry(s.Options().Registry),
-	)
-
-	err := router.Register(&api.Endpoint{
-		Name:    "foo.Test.Call",
-		Method:  []string{"POST"},
-		Path:    []string{"/api/v0/test/call/{uuid}"},
-		Handler: "rpc",
-	})
-	if err != nil {
-		t.Fatal(err)
-	}
-
-	hrpc := rpc.NewHandler(
-		handler.WithClient(c),
-		handler.WithRouter(router),
-	)
-	hsrv := &http.Server{
-		Handler:        hrpc,
-		Addr:           "127.0.0.1:6543",
-		WriteTimeout:   15 * time.Second,
-		ReadTimeout:    15 * time.Second,
-		IdleTimeout:    20 * time.Second,
-		MaxHeaderBytes: 1024 * 1024 * 1, // 1Mb
-	}
-
-	go func() {
-		log.Println(hsrv.ListenAndServe())
-	}()
-	defer hsrv.Close()
-
-	time.Sleep(1 * time.Second)
-	check(t, hsrv.Addr, "http://%s/api/v0/test/call/TEST", `{"msg":"Hello TEST"}`)
-}
-
-func TestRouterStaticPcreInvalid(t *testing.T) {
-	var ep *api.Endpoint
-	var err error
-
-	s, c := initial(t)
-	defer s.Stop()
-
-	router := rstatic.NewRouter(
-		router.WithHandler(rpc.Handler),
-		router.WithRegistry(s.Options().Registry),
-	)
-
-	ep = &api.Endpoint{
-		Name:    "foo.Test.Call",
-		Method:  []string{"POST"},
-		Path:    []string{"^/api/v0/test/call/?"},
-		Handler: "rpc",
-	}
-
-	err = router.Register(ep)
-	if err == nil {
-		t.Fatalf("invalid endpoint %v", ep)
-	}
-
-	ep = &api.Endpoint{
-		Name:    "foo.Test.Call",
-		Method:  []string{"POST"},
-		Path:    []string{"/api/v0/test/call/?$"},
-		Handler: "rpc",
-	}
-
-	err = router.Register(ep)
-	if err == nil {
-		t.Fatalf("invalid endpoint %v", ep)
-	}
-
-	_ = c
-}

api/router/static/static.go

@@ -1,356 +0,0 @@
-package static
-
-import (
-	"errors"
-	"fmt"
-	"net/http"
-	"regexp"
-	"strings"
-	"sync"
-
-	"github.com/unistack-org/micro/v3/api"
-	"github.com/unistack-org/micro/v3/api/router"
-	"github.com/unistack-org/micro/v3/logger"
-	"github.com/unistack-org/micro/v3/metadata"
-	"github.com/unistack-org/micro/v3/registry"
-	rutil "github.com/unistack-org/micro/v3/util/registry"
-	util "github.com/unistack-org/micro/v3/util/router"
-)
-
-type endpoint struct {
-	apiep    *api.Endpoint
-	hostregs []*regexp.Regexp
-	pathregs []util.Pattern
-	pcreregs []*regexp.Regexp
-}
-
-// router is the default router
-type staticRouter struct {
-	exit chan bool
-	opts router.Options
-	sync.RWMutex
-	eps map[string]*endpoint
-}
-
-func (r *staticRouter) isClosed() bool {
-	select {
-	case <-r.exit:
-		return true
-	default:
-		return false
-	}
-}
-
-/*
-// watch for endpoint changes
-func (r *staticRouter) watch() {
-	var attempts int
-
-	for {
-		if r.isClosed() {
-			return
-		}
-
-		// watch for changes
-		w, err := r.opts.Registry.Watch()
-		if err != nil {
-			attempts++
-			log.Println("Error watching endpoints", err)
-			time.Sleep(time.Duration(attempts) * time.Second)
-			continue
-		}
-
-		ch := make(chan bool)
-
-		go func() {
-			select {
-			case <-ch:
-				w.Stop()
-			case <-r.exit:
-				w.Stop()
-			}
-		}()
-
-		// reset if we get here
-		attempts = 0
-
-		for {
-			// process next event
-			res, err := w.Next()
-			if err != nil {
-				log.Println("Error getting next endpoint", err)
-				close(ch)
-				break
-			}
-			r.process(res)
-		}
-	}
-}
-*/
-
-func (r *staticRouter) Register(ep *api.Endpoint) error {
-	if err := api.Validate(ep); err != nil {
-		return err
-	}
-
-	var pathregs []util.Pattern
-	var hostregs []*regexp.Regexp
-	var pcreregs []*regexp.Regexp
-
-	for _, h := range ep.Host {
-		if h == "" || h == "*" {
-			continue
-		}
-		hostreg, err := regexp.CompilePOSIX(h)
-		if err != nil {
-			return err
-		}
-		hostregs = append(hostregs, hostreg)
-	}
-
-	for _, p := range ep.Path {
-		var pcreok bool
-
-		// pcre only when we have start and end markers
-		if p[0] == '^' && p[len(p)-1] == '$' {
-			pcrereg, err := regexp.CompilePOSIX(p)
-			if err == nil {
-				pcreregs = append(pcreregs, pcrereg)
-				pcreok = true
-			}
-		}
-
-		rule, err := util.Parse(p)
-		if err != nil && !pcreok {
-			return err
-		} else if err != nil && pcreok {
-			continue
-		}
-
-		tpl := rule.Compile()
-		pathreg, err := util.NewPattern(tpl.Version, tpl.OpCodes, tpl.Pool, "")
-		if err != nil {
-			return err
-		}
-		pathregs = append(pathregs, pathreg)
-	}
-
-	r.Lock()
-	r.eps[ep.Name] = &endpoint{
-		apiep:    ep,
-		pcreregs: pcreregs,
-		pathregs: pathregs,
-		hostregs: hostregs,
-	}
-	r.Unlock()
-	return nil
-}
-
-func (r *staticRouter) Deregister(ep *api.Endpoint) error {
-	if err := api.Validate(ep); err != nil {
-		return err
-	}
-	r.Lock()
-	delete(r.eps, ep.Name)
-	r.Unlock()
-	return nil
-}
-
-func (r *staticRouter) Options() router.Options {
-	return r.opts
-}
-
-func (r *staticRouter) Close() error {
-	select {
-	case <-r.exit:
-		return nil
-	default:
-		close(r.exit)
-	}
-	return nil
-}
-
-func (r *staticRouter) Endpoint(req *http.Request) (*api.Service, error) {
-	ep, err := r.endpoint(req)
-	if err != nil {
-		return nil, err
-	}
-
-	epf := strings.Split(ep.apiep.Name, ".")
-	services, err := r.opts.Registry.GetService(epf[0])
-	if err != nil {
-		return nil, err
-	}
-
-	// hack for stream endpoint
-	if ep.apiep.Stream {
-		svcs := rutil.Copy(services)
-		for _, svc := range svcs {
-			if len(svc.Endpoints) == 0 {
-				e := &registry.Endpoint{}
-				e.Name = strings.Join(epf[1:], ".")
-				e.Metadata = make(map[string]string)
-				e.Metadata["stream"] = "true"
-				svc.Endpoints = append(svc.Endpoints, e)
-			}
-			for _, e := range svc.Endpoints {
-				e.Name = strings.Join(epf[1:], ".")
-				e.Metadata = make(map[string]string)
-				e.Metadata["stream"] = "true"
-			}
-		}
-
-		services = svcs
-	}
-
-	svc := &api.Service{
-		Name: epf[0],
-		Endpoint: &api.Endpoint{
-			Name:    strings.Join(epf[1:], "."),
-			Handler: "rpc",
-			Host:    ep.apiep.Host,
-			Method:  ep.apiep.Method,
-			Path:    ep.apiep.Path,
-			Body:    ep.apiep.Body,
-			Stream:  ep.apiep.Stream,
-		},
-		Services: services,
-	}
-
-	return svc, nil
-}
-
-func (r *staticRouter) endpoint(req *http.Request) (*endpoint, error) {
-	if r.isClosed() {
-		return nil, errors.New("router closed")
-	}
-
-	r.RLock()
-	defer r.RUnlock()
-
-	var idx int
-	if len(req.URL.Path) > 0 && req.URL.Path != "/" {
-		idx = 1
-	}
-	path := strings.Split(req.URL.Path[idx:], "/")
-	// use the first match
-	// TODO: weighted matching
-
-	for _, ep := range r.eps {
-		var mMatch, hMatch, pMatch bool
-
-		// 1. try method
-		for _, m := range ep.apiep.Method {
-			if m == req.Method {
-				mMatch = true
-				break
-			}
-		}
-		if !mMatch {
-			continue
-		}
-		if logger.V(logger.DebugLevel, logger.DefaultLogger) {
-			logger.Debugf("api method match %s", req.Method)
-		}
-
-		// 2. try host
-		if len(ep.apiep.Host) == 0 {
-			hMatch = true
-		} else {
-			for idx, h := range ep.apiep.Host {
-				if h == "" || h == "*" {
-					hMatch = true
-					break
-				} else {
-					if ep.hostregs[idx].MatchString(req.URL.Host) {
-						hMatch = true
-						break
-					}
-				}
-			}
-		}
-		if !hMatch {
-			continue
-		}
-		if logger.V(logger.DebugLevel, logger.DefaultLogger) {
-			logger.Debugf("api host match %s", req.URL.Host)
-		}
-
-		// 3. try google.api path
-		for _, pathreg := range ep.pathregs {
-			matches, err := pathreg.Match(path, "")
-			if err != nil {
-				if logger.V(logger.DebugLevel, logger.DefaultLogger) {
-					logger.Debugf("api gpath not match %s != %v", path, pathreg)
-				}
-				continue
-			}
-			if logger.V(logger.DebugLevel, logger.DefaultLogger) {
-				logger.Debugf("api gpath match %s = %v", path, pathreg)
-			}
-			pMatch = true
-			ctx := req.Context()
-			md, ok := metadata.FromContext(ctx)
-			if !ok {
-				md = make(metadata.Metadata)
-			}
-			for k, v := range matches {
-				md[fmt.Sprintf("x-api-field-%s", k)] = v
-			}
-			md["x-api-body"] = ep.apiep.Body
-			*req = *req.Clone(metadata.NewContext(ctx, md))
-			break
-		}
-
-		if !pMatch {
-			// 4. try path via pcre path matching
-			for _, pathreg := range ep.pcreregs {
-				if !pathreg.MatchString(req.URL.Path) {
-					if logger.V(logger.DebugLevel, logger.DefaultLogger) {
-						logger.Debugf("api pcre path not match %s != %v", req.URL.Path, pathreg)
-					}
-					continue
-				}
-				pMatch = true
-				break
-			}
-		}
-
-		if !pMatch {
-			continue
-		}
-		// TODO: Percentage traffic
-
-		// we got here, so its a match
-		return ep, nil
-	}
-
-	// no match
-	return nil, fmt.Errorf("endpoint not found for %v", req.URL)
-}
-
-func (r *staticRouter) Route(req *http.Request) (*api.Service, error) {
-	if r.isClosed() {
-		return nil, errors.New("router closed")
-	}
-
-	// try get an endpoint
-	ep, err := r.Endpoint(req)
-	if err != nil {
-		return nil, err
-	}
-
-	return ep, nil
-}
-
-func NewRouter(opts ...router.Option) *staticRouter {
-	options := router.NewOptions(opts...)
-	r := &staticRouter{
-		exit: make(chan bool),
-		opts: options,
-		eps:  make(map[string]*endpoint),
-	}
-	//go r.watch()
-	//go r.refresh()
-	return r
-}

api/server/acme/acme.go

@@ -15,6 +15,7 @@ var (
 
 // Provider is a ACME provider interface
 type Provider interface {
+	Init(...Option) error
 	// Listen returns a new listener
 	Listen(...string) (net.Listener, error)
 	// TLSConfig returns a tls config

api/server/acme/autocert/autocert.go

@@ -15,6 +15,10 @@ import (
 // autoCertACME is the ACME provider from golang.org/x/crypto/acme/autocert
 type autocertProvider struct{}
 
+func (a *autocertProvider) Init(opts ...acme.Option) error {
+	return nil
+}
+
 // Listen implements acme.Provider
 func (a *autocertProvider) Listen(hosts ...string) (net.Listener, error) {
 	return autocert.NewListener(hosts...), nil
@@ -31,8 +35,8 @@ func (a *autocertProvider) TLSConfig(hosts ...string) (*tls.Config, error) {
 	}
 	dir := cacheDir()
 	if err := os.MkdirAll(dir, 0700); err != nil {
-		if logger.V(logger.InfoLevel, logger.DefaultLogger) {
+		if logger.V(logger.InfoLevel) {
-			logger.Infof("warning: autocert not using a cache: %v", err)
+			logger.Info("warning: autocert not using a cache: %v", err)
 		}
 	} else {
 		m.Cache = autocert.DirCache(dir)

api/server/acme/certmagic/certmagic.go

@@ -3,13 +3,13 @@ package certmagic
 
 import (
 	"crypto/tls"
+	"fmt"
 	"math/rand"
 	"net"
 	"time"
 
 	"github.com/caddyserver/certmagic"
 	"github.com/unistack-org/micro/v3/api/server/acme"
-	"github.com/unistack-org/micro/v3/logger"
 )
 
 type certmagicProvider struct {
@@ -48,6 +48,15 @@ func (c *certmagicProvider) TLSConfig(hosts ...string) (*tls.Config, error) {
 	return certmagic.TLS(hosts)
 }
 
+func (p *certmagicProvider) Init(opts ...acme.Option) error {
+	if p.opts.Cache != nil {
+		if _, ok := p.opts.Cache.(certmagic.Storage); !ok {
+			return fmt.Errorf("ACME: cache provided doesn't implement certmagic's Storage interface")
+		}
+	}
+	return nil
+}
+
 // NewProvider returns a certmagic provider
 func NewProvider(options ...acme.Option) acme.Provider {
 	opts := acme.DefaultOptions()
@@ -56,12 +65,6 @@ func NewProvider(options ...acme.Option) acme.Provider {
 		o(&opts)
 	}
 
-	if opts.Cache != nil {
-		if _, ok := opts.Cache.(certmagic.Storage); !ok {
-			logger.Fatal("ACME: cache provided doesn't implement certmagic's Storage interface")
-		}
-	}
-
 	return &certmagicProvider{
 		opts: opts,
 	}

api/server/acme/certmagic/storage.go

@@ -52,14 +52,14 @@ func (s *storage) Store(key string, value []byte) error {
 		Key:   key,
 		Value: buf.Bytes(),
 	}
-	return s.store.Write(r)
+	return s.store.Write(s.store.Options().Context, r)
 }
 
 func (s *storage) Load(key string) ([]byte, error) {
 	if !s.Exists(key) {
 		return nil, certmagic.ErrNotExist(errors.New(key + " doesn't exist"))
 	}
-	records, err := s.store.Read(key)
+	records, err := s.store.Read(s.store.Options().Context, key)
 	if err != nil {
 		return nil, err
 	}
@@ -77,18 +77,18 @@ func (s *storage) Load(key string) ([]byte, error) {
 }
 
 func (s *storage) Delete(key string) error {
-	return s.store.Delete(key)
+	return s.store.Delete(s.store.Options().Context, key)
 }
 
 func (s *storage) Exists(key string) bool {
-	if _, err := s.store.Read(key); err != nil {
+	if _, err := s.store.Read(s.store.Options().Context, key); err != nil {
 		return false
 	}
 	return true
 }
 
 func (s *storage) List(prefix string, recursive bool) ([]string, error) {
-	keys, err := s.store.List()
+	keys, err := s.store.List(s.store.Options().Context)
 	if err != nil {
 		return nil, err
 	}
@@ -116,7 +116,7 @@ func (s *storage) List(prefix string, recursive bool) ([]string, error) {
 }
 
 func (s *storage) Stat(key string) (certmagic.KeyInfo, error) {
-	records, err := s.store.Read(key)
+	records, err := s.store.Read(s.store.Options().Context, key)
 	if err != nil {
 		return certmagic.KeyInfo{}, err
 	}

api/server/http/http.go

@@ -15,19 +15,14 @@ type httpServer struct {
 	mux  *http.ServeMux
 	opts server.Options
 
-	mtx     sync.RWMutex
+	sync.RWMutex
 	address string
 	exit    chan chan error
 }
 
 func NewServer(address string, opts ...server.Option) server.Server {
-	var options server.Options
-	for _, o := range opts {
-		o(&options)
-	}
-
 	return &httpServer{
-		opts:    options,
+		opts:    server.NewOptions(opts...),
 		mux:     http.NewServeMux(),
 		address: address,
 		exit:    make(chan chan error),
@@ -35,8 +30,8 @@ func NewServer(address string, opts ...server.Option) server.Server {
 }
 
 func (s *httpServer) Address() string {
-	s.mtx.RLock()
+	s.RLock()
-	defer s.mtx.RUnlock()
+	defer s.RUnlock()
 	return s.address
 }
 
@@ -62,6 +57,9 @@ func (s *httpServer) Start() error {
 	var l net.Listener
 	var err error
 
+	s.RLock()
+	config := s.opts
+	s.RUnlock()
 	if s.opts.EnableACME && s.opts.ACMEProvider != nil {
 		// should we check the address to make sure its using :443?
 		l, err = s.opts.ACMEProvider.Listen(s.opts.ACMEHosts...)
@@ -75,18 +73,21 @@ func (s *httpServer) Start() error {
 		return err
 	}
 
-	if logger.V(logger.InfoLevel, logger.DefaultLogger) {
+	if config.Logger.V(logger.InfoLevel) {
-		logger.Infof("HTTP API Listening on %s", l.Addr().String())
+		config.Logger.Info("HTTP API Listening on %s", l.Addr().String())
 	}
 
-	s.mtx.Lock()
+	s.Lock()
 	s.address = l.Addr().String()
-	s.mtx.Unlock()
+	s.Unlock()
 
 	go func() {
 		if err := http.Serve(l, s.mux); err != nil {
 			// temporary fix
-			logger.Error(err)
+			if config.Logger.V(logger.ErrorLevel) {
+				config.Logger.Error("serve err: %v", err)
+			}
+			s.Stop()
 		}
 	}()
 

api/server/options.go

@@ -6,10 +6,13 @@ import (
 
 	"github.com/unistack-org/micro/v3/api/resolver"
 	"github.com/unistack-org/micro/v3/api/server/acme"
+	"github.com/unistack-org/micro/v3/logger"
 )
 
+// Option func
 type Option func(o *Options)
 
+// Options for api server
 type Options struct {
 	EnableACME   bool
 	EnableCORS   bool
@@ -19,6 +22,18 @@ type Options struct {
 	TLSConfig    *tls.Config
 	Resolver     resolver.Resolver
 	Wrappers     []Wrapper
+	Logger       logger.Logger
+}
+
+// NewOptions returns new Options
+func NewOptions(opts ...Option) Options {
+	options := Options{
+		Logger: logger.DefaultLogger,
+	}
+	for _, o := range opts {
+		o(&options)
+	}
+	return options
 }
 
 type Wrapper func(h http.Handler) http.Handler
@@ -70,3 +85,9 @@ func Resolver(r resolver.Resolver) Option {
 		o.Resolver = r
 	}
 }
+
+func Logger(l logger.Logger) Option {
+	return func(o *Options) {
+		o.Logger = l
+	}
+}

auth/auth.go

@@ -17,7 +17,7 @@ const (
 )
 
 var (
-	DefaultAuth Auth
+	DefaultAuth Auth = &NoopAuth{opts: NewOptions()}
 	// ErrInvalidToken is when the token provided is not valid
 	ErrInvalidToken = errors.New("invalid token provided")
 	// ErrForbidden is when a user does not have the necessary scope to access a resource

auth/jwt/jwt.go

@@ -1,151 +0,0 @@
-// Package jwt is a jwt implementation of the auth interface
-package jwt
-
-import (
-	"sync"
-	"time"
-
-	"github.com/unistack-org/micro/v3/auth"
-	"github.com/unistack-org/micro/v3/util/token"
-	"github.com/unistack-org/micro/v3/util/token/jwt"
-)
-
-// NewAuth returns a new instance of the Auth service
-func NewAuth(opts ...auth.Option) auth.Auth {
-	j := new(jwtAuth)
-	j.Init(opts...)
-	return j
-}
-
-type jwtAuth struct {
-	options auth.Options
-	token   token.Provider
-	rules   []*auth.Rule
-
-	sync.Mutex
-}
-
-func (j *jwtAuth) String() string {
-	return "jwt"
-}
-
-func (j *jwtAuth) Init(opts ...auth.Option) {
-	j.Lock()
-	defer j.Unlock()
-
-	for _, o := range opts {
-		o(&j.options)
-	}
-
-	j.token = jwt.NewTokenProvider(
-		token.WithPrivateKey(j.options.PrivateKey),
-		token.WithPublicKey(j.options.PublicKey),
-	)
-}
-
-func (j *jwtAuth) Options() auth.Options {
-	j.Lock()
-	defer j.Unlock()
-	return j.options
-}
-
-func (j *jwtAuth) Generate(id string, opts ...auth.GenerateOption) (*auth.Account, error) {
-	options := auth.NewGenerateOptions(opts...)
-	if len(options.Issuer) == 0 {
-		options.Issuer = j.Options().Issuer
-	}
-
-	account := &auth.Account{
-		ID:       id,
-		Type:     options.Type,
-		Scopes:   options.Scopes,
-		Metadata: options.Metadata,
-		Issuer:   options.Issuer,
-	}
-
-	// generate a JWT secret which can be provided to the Token() method
-	// and exchanged for an access token
-	secret, err := j.token.Generate(account, token.WithExpiry(time.Hour*24*365))
-	if err != nil {
-		return nil, err
-	}
-	account.Secret = secret.Token
-
-	// return the account
-	return account, nil
-}
-
-func (j *jwtAuth) Grant(rule *auth.Rule) error {
-	j.Lock()
-	defer j.Unlock()
-	j.rules = append(j.rules, rule)
-	return nil
-}
-
-func (j *jwtAuth) Revoke(rule *auth.Rule) error {
-	j.Lock()
-	defer j.Unlock()
-
-	rules := []*auth.Rule{}
-	for _, r := range j.rules {
-		if r.ID != rule.ID {
-			rules = append(rules, r)
-		}
-	}
-
-	j.rules = rules
-	return nil
-}
-
-func (j *jwtAuth) Verify(acc *auth.Account, res *auth.Resource, opts ...auth.VerifyOption) error {
-	j.Lock()
-	defer j.Unlock()
-
-	var options auth.VerifyOptions
-	for _, o := range opts {
-		o(&options)
-	}
-
-	return auth.VerifyAccess(j.rules, acc, res)
-}
-
-func (j *jwtAuth) Rules(opts ...auth.RulesOption) ([]*auth.Rule, error) {
-	j.Lock()
-	defer j.Unlock()
-	return j.rules, nil
-}
-
-func (j *jwtAuth) Inspect(token string) (*auth.Account, error) {
-	return j.token.Inspect(token)
-}
-
-func (j *jwtAuth) Token(opts ...auth.TokenOption) (*auth.Token, error) {
-	options := auth.NewTokenOptions(opts...)
-
-	secret := options.RefreshToken
-	if len(options.Secret) > 0 {
-		secret = options.Secret
-	}
-
-	account, err := j.token.Inspect(secret)
-	if err != nil {
-		return nil, err
-	}
-
-	access, err := j.token.Generate(account, token.WithExpiry(options.Expiry))
-	if err != nil {
-		return nil, err
-	}
-
-	refresh, err := j.token.Generate(account, token.WithExpiry(options.Expiry+time.Hour))
-	if err != nil {
-		return nil, err
-	}
-
-	return &auth.Token{
-		Created:      access.Created,
-		Expiry:       access.Expiry,
-		AccessToken:  access.Token,
-		RefreshToken: refresh.Token,
-	}, nil
-}

auth/noop.go

@@ -0,0 +1,73 @@
+package auth
+
+import (
+	"github.com/google/uuid"
+)
+
+type NoopAuth struct {
+	opts Options
+}
+
+// String returns the name of the implementation
+func (n *NoopAuth) String() string {
+	return "noop"
+}
+
+// Init the auth
+func (n *NoopAuth) Init(opts ...Option) {
+	for _, o := range opts {
+		o(&n.opts)
+	}
+}
+
+// Options set for auth
+func (n *NoopAuth) Options() Options {
+	return n.opts
+}
+
+// Generate a new account
+func (n *NoopAuth) Generate(id string, opts ...GenerateOption) (*Account, error) {
+	options := NewGenerateOptions(opts...)
+
+	return &Account{
+		ID:       id,
+		Secret:   options.Secret,
+		Metadata: options.Metadata,
+		Scopes:   options.Scopes,
+		Issuer:   n.Options().Issuer,
+	}, nil
+}
+
+// Grant access to a resource
+func (n *NoopAuth) Grant(rule *Rule) error {
+	return nil
+}
+
+// Revoke access to a resource
+func (n *NoopAuth) Revoke(rule *Rule) error {
+	return nil
+}
+
+// Rules used to verify requests
+func (n *NoopAuth) Rules(opts ...RulesOption) ([]*Rule, error) {
+	return []*Rule{}, nil
+}
+
+// Verify an account has access to a resource
+func (n *NoopAuth) Verify(acc *Account, res *Resource, opts ...VerifyOption) error {
+	return nil
+}
+
+// Inspect a token
+func (n *NoopAuth) Inspect(token string) (*Account, error) {
+	uid, err := uuid.NewRandom()
+	if err != nil {
+		return nil, err
+	}
+	return &Account{ID: uid.String(), Issuer: n.Options().Issuer}, nil
+}
+
+// Token generation using an account id and secret
+func (n *NoopAuth) Token(opts ...TokenOption) (*Token, error) {
+	return &Token{}, nil
+}

auth/noop/noop.go

@@ -1,81 +0,0 @@
-package noop
-
-import (
-	"github.com/google/uuid"
-	"github.com/unistack-org/micro/v3/auth"
-)
-
-func NewAuth(opts ...auth.Option) auth.Auth {
-	var options auth.Options
-	for _, o := range opts {
-		o(&options)
-	}
-
-	return &noop{
-		opts: options,
-	}
-}
-
-type noop struct {
-	opts auth.Options
-}
-
-// String returns the name of the implementation
-func (n *noop) String() string {
-	return "noop"
-}
-
-// Init the auth
-func (n *noop) Init(opts ...auth.Option) {
-	for _, o := range opts {
-		o(&n.opts)
-	}
-}
-
-// Options set for auth
-func (n *noop) Options() auth.Options {
-	return n.opts
-}
-
-// Generate a new account
-func (n *noop) Generate(id string, opts ...auth.GenerateOption) (*auth.Account, error) {
-	options := auth.NewGenerateOptions(opts...)
-
-	return &auth.Account{
-		ID:       id,
-		Secret:   options.Secret,
-		Metadata: options.Metadata,
-		Scopes:   options.Scopes,
-		Issuer:   n.Options().Issuer,
-	}, nil
-}
-
-// Grant access to a resource
-func (n *noop) Grant(rule *auth.Rule) error {
-	return nil
-}
-
-// Revoke access to a resource
-func (n *noop) Revoke(rule *auth.Rule) error {
-	return nil
-}
-
-// Rules used to verify requests
-func (n *noop) Rules(opts ...auth.RulesOption) ([]*auth.Rule, error) {
-	return []*auth.Rule{}, nil
-}
-
-// Verify an account has access to a resource
-func (n *noop) Verify(acc *auth.Account, res *auth.Resource, opts ...auth.VerifyOption) error {
-	return nil
-}
-
-// Inspect a token
-func (n *noop) Inspect(token string) (*auth.Account, error) {
-	return &auth.Account{ID: uuid.New().String(), Issuer: n.Options().Issuer}, nil
-}
-
-// Token generation using an account id and secret
-func (n *noop) Token(opts ...auth.TokenOption) (*auth.Token, error) {
-	return &auth.Token{}, nil
-}

broker/broker.go

@@ -1,8 +1,10 @@
 // Package broker is an interface used for asynchronous messaging
 package broker
 
+import "context"
+
 var (
-	DefaultBroker Broker = newBroker()
+	DefaultBroker Broker = NewBroker()
 )
 
 // Broker is an interface used for asynchronous messaging.
@@ -10,10 +12,10 @@ type Broker interface {
 	Init(...Option) error
 	Options() Options
 	Address() string
-	Connect() error
+	Connect(context.Context) error
-	Disconnect() error
+	Disconnect(context.Context) error
-	Publish(topic string, m *Message, opts ...PublishOption) error
+	Publish(context.Context, string, *Message, ...PublishOption) error
-	Subscribe(topic string, h Handler, opts ...SubscribeOption) (Subscriber, error)
+	Subscribe(context.Context, string, Handler, ...SubscribeOption) (Subscriber, error)
 	String() string
 }
 
@@ -30,14 +32,13 @@ type Event interface {
 
 // Message is used to transfer data
 type Message struct {
-	Header map[string]string
+	Header map[string]string // contains message metadata
-	Body   []byte
+	Body   []byte            // contains message body
-	Error  error
 }
 
 // Subscriber is a convenience return type for the Subscribe method
 type Subscriber interface {
 	Options() SubscribeOptions
 	Topic() string
-	Unsubscribe() error
+	Unsubscribe(context.Context) error
 }

broker/context.go

@@ -0,0 +1,46 @@
+package broker
+
+import (
+	"context"
+)
+
+type brokerKey struct{}
+
+func FromContext(ctx context.Context) (Broker, bool) {
+	c, ok := ctx.Value(brokerKey{}).(Broker)
+	return c, ok
+}
+
+func NewContext(ctx context.Context, s Broker) context.Context {
+	return context.WithValue(ctx, brokerKey{}, s)
+}
+
+// SetSubscribeOption returns a function to setup a context with given value
+func SetSubscribeOption(k, v interface{}) SubscribeOption {
+	return func(o *SubscribeOptions) {
+		if o.Context == nil {
+			o.Context = context.Background()
+		}
+		o.Context = context.WithValue(o.Context, k, v)
+	}
+}
+
+// SetOption returns a function to setup a context with given value
+func SetOption(k, v interface{}) Option {
+	return func(o *Options) {
+		if o.Context == nil {
+			o.Context = context.Background()
+		}
+		o.Context = context.WithValue(o.Context, k, v)
+	}
+}
+
+// SetPublishOption returns a function to setup a context with given value
+func SetPublishOption(k, v interface{}) PublishOption {
+	return func(o *PublishOptions) {
+		if o.Context == nil {
+			o.Context = context.Background()
+		}
+		o.Context = context.WithValue(o.Context, k, v)
+	}
+}

broker/noop.go

@@ -1,5 +1,7 @@
 package broker
 
+import "context"
+
 type noopBroker struct {
 	opts Options
 }
@@ -9,6 +11,12 @@ type noopSubscriber struct {
 	opts  SubscribeOptions
 }
 
+// NewBroker returns new noop broker
+func NewBroker(opts ...Option) Broker {
+	return &noopBroker{opts: NewOptions(opts...)}
+}
+
+// Init initialize broker
 func (n *noopBroker) Init(opts ...Option) error {
 	for _, o := range opts {
 		o(&n.opts)
@@ -17,58 +25,53 @@ func (n *noopBroker) Init(opts ...Option) error {
 	return nil
 }
 
+// Options returns broker Options
 func (n *noopBroker) Options() Options {
 	return n.opts
 }
 
+// Address returns broker address
 func (n *noopBroker) Address() string {
 	return ""
 }
 
-func (n *noopBroker) Connect() error {
+// Connect connects to broker
+func (n *noopBroker) Connect(ctx context.Context) error {
 	return nil
 }
 
-func (n *noopBroker) Disconnect() error {
+// Disconnect disconnects from broker
+func (n *noopBroker) Disconnect(ctx context.Context) error {
 	return nil
 }
 
-func (n *noopBroker) Publish(topic string, m *Message, opts ...PublishOption) error {
+// Publish publishes message to broker
+func (n *noopBroker) Publish(ctx context.Context, topic string, m *Message, opts ...PublishOption) error {
 	return nil
 }
 
-func (n *noopBroker) Subscribe(topic string, h Handler, opts ...SubscribeOption) (Subscriber, error) {
+// Subscribe subscribes to broker topic
-	options := NewSubscribeOptions()
+func (n *noopBroker) Subscribe(ctx context.Context, topic string, h Handler, opts ...SubscribeOption) (Subscriber, error) {
-
+	options := NewSubscribeOptions(opts...)
-	for _, o := range opts {
-		o(&options)
-	}
-
 	return &noopSubscriber{topic: topic, opts: options}, nil
 }
 
+// String return broker string representation
 func (n *noopBroker) String() string {
 	return "noop"
 }
 
+// Options returns subscriber options
 func (n *noopSubscriber) Options() SubscribeOptions {
 	return n.opts
 }
 
+// TOpic returns subscriber topic
 func (n *noopSubscriber) Topic() string {
 	return n.topic
 }
 
-func (n *noopSubscriber) Unsubscribe() error {
+// Unsubscribe unsbscribes from broker topic
+func (n *noopSubscriber) Unsubscribe(ctx context.Context) error {
 	return nil
 }
-
-// newBroker returns a new noop broker
-func newBroker(opts ...Option) Broker {
-	options := NewOptions()
-
-	for _, o := range opts {
-		o(&options)
-	}
-	return &noopBroker{opts: options}
-}

broker/options.go

@@ -9,6 +9,7 @@ import (
 	"github.com/unistack-org/micro/v3/registry"
 )
 
+// Options struct
 type Options struct {
 	Addrs  []string
 	Secure bool
@@ -27,18 +28,47 @@ type Options struct {
 	Context context.Context
 }
 
-func NewOptions() Options {
+// NewOptions create new Options
-	return Options{
+func NewOptions(opts ...Option) Options {
-		Context: context.Background(),
+	options := Options{
+		Registry: registry.DefaultRegistry,
+		Logger:   logger.DefaultLogger,
+		Context:  context.Background(),
+	}
+	for _, o := range opts {
+		o(&options)
+	}
+	return options
+}
+
+// Context sets the context option
+func Context(ctx context.Context) Option {
+	return func(o *Options) {
+		o.Context = ctx
 	}
 }
 
+// PublishOptions struct
 type PublishOptions struct {
 	// Other options for implementations of the interface
 	// can be stored in a context
 	Context context.Context
 }
 
+// NewPublishOptions creates PublishOptions struct
+func NewPublishOptions(opts ...PublishOption) PublishOptions {
+	options := PublishOptions{
+		Context: context.Background(),
+	}
+
+	for _, o := range opts {
+		o(&options)
+	}
+
+	return options
+}
+
+// SubscribeOptions struct
 type SubscribeOptions struct {
 	// AutoAck ack messages if handler returns nil err
 	AutoAck bool
@@ -56,30 +86,34 @@ type SubscribeOptions struct {
 	Context context.Context
 }
 
+// Option func
 type Option func(*Options)
 
+// PublishOption func
 type PublishOption func(*PublishOptions)
 
-// PublishContext set context
+// PublishContext sets the context
 func PublishContext(ctx context.Context) PublishOption {
 	return func(o *PublishOptions) {
 		o.Context = ctx
 	}
 }
 
+// SubscribeOption func
 type SubscribeOption func(*SubscribeOptions)
 
+// NewSubscribeOptions creates new SubscribeOptions
 func NewSubscribeOptions(opts ...SubscribeOption) SubscribeOptions {
-	opt := SubscribeOptions{
+	options := SubscribeOptions{
 		AutoAck: true,
 		Context: context.Background(),
 	}
 
 	for _, o := range opts {
-		o(&opt)
+		o(&options)
 	}
 
-	return opt
+	return options
 }
 
 // Addrs sets the host addresses to be used by the broker
@@ -97,6 +131,7 @@ func Codec(c codec.Marshaler) Option {
 	}
 }
 
+// DisableAutoAck disables auto ack
 func DisableAutoAck() SubscribeOption {
 	return func(o *SubscribeOptions) {
 		o.AutoAck = false
@@ -127,6 +162,7 @@ func SubscribeErrorHandler(h Handler) SubscribeOption {
 	}
 }
 
+// Queue sets the subscribers sueue
 func Queue(name string) SubscribeOption {
 	return func(o *SubscribeOptions) {
 		o.Group = name
@@ -140,6 +176,7 @@ func SubscribeGroup(name string) SubscribeOption {
 	}
 }
 
+// Registry sets registry option
 func Registry(r registry.Registry) Option {
 	return func(o *Options) {
 		o.Registry = r
@@ -153,7 +190,7 @@ func Secure(b bool) Option {
 	}
 }
 
-// Specify TLS Config
+// TLSConfig sets the TLS Config
 func TLSConfig(t *tls.Config) Option {
 	return func(o *Options) {
 		o.TLSConfig = t

build/options.go

@@ -1,13 +1,15 @@
 package build
 
+// Options struct
 type Options struct {
 	// local path to download source
 	Path string
 }
 
+// Option func
 type Option func(o *Options)
 
-// Local path for repository
+// Path is the Local path for repository
 func Path(p string) Option {
 	return func(o *Options) {
 		o.Path = p

cache/cache.go

@@ -1,29 +0,0 @@
-// Package cache is a caching interface
-package cache
-
-// Cache is an interface for caching
-type Cache interface {
-	// Initialise options
-	Init(...Option) error
-	// Get a value
-	Get(key string) (interface{}, error)
-	// Set a value
-	Set(key string, val interface{}) error
-	// Delete a value
-	Delete(key string) error
-	// Name of the implementation
-	String() string
-}
-
-type Options struct {
-	Nodes []string
-}
-
-type Option func(o *Options)
-
-// Nodes sets the nodes for the cache
-func Nodes(v ...string) Option {
-	return func(o *Options) {
-		o.Nodes = v
-	}
-}

client/backoff.go

@@ -7,6 +7,7 @@ import (
 	"github.com/unistack-org/micro/v3/util/backoff"
 )
 
+// BackoffFunc is the backoff call func
 type BackoffFunc func(ctx context.Context, req Request, attempts int) (time.Duration, error)
 
 func exponentialBackoff(ctx context.Context, req Request, attempts int) (time.Duration, error) {

client/cache.go

@@ -1,66 +0,0 @@
-package client
-
-import (
-	"context"
-	"encoding/json"
-	"fmt"
-	"hash/fnv"
-	"time"
-
-	cache "github.com/patrickmn/go-cache"
-	"github.com/unistack-org/micro/v3/metadata"
-)
-
-// NewCache returns an initialised cache.
-func NewCache() *Cache {
-	return &Cache{
-		cache: cache.New(cache.NoExpiration, 30*time.Second),
-	}
-}
-
-// Cache for responses
-type Cache struct {
-	cache *cache.Cache
-}
-
-// Get a response from the cache
-func (c *Cache) Get(ctx context.Context, req Request) (interface{}, bool) {
-	return c.cache.Get(key(ctx, req))
-}
-
-// Set a response in the cache
-func (c *Cache) Set(ctx context.Context, req Request, rsp interface{}, expiry time.Duration) {
-	c.cache.Set(key(ctx, req), rsp, expiry)
-}
-
-// List the key value pairs in the cache
-func (c *Cache) List() map[string]string {
-	items := c.cache.Items()
-
-	rsp := make(map[string]string, len(items))
-	for k, v := range items {
-		bytes, _ := json.Marshal(v.Object)
-		rsp[k] = string(bytes)
-	}
-
-	return rsp
-}
-
-// key returns a hash for the context and request
-func key(ctx context.Context, req Request) string {
-	ns, _ := metadata.Get(ctx, "Micro-Namespace")
-
-	bytes, _ := json.Marshal(map[string]interface{}{
-		"namespace": ns,
-		"request": map[string]interface{}{
-			"service":  req.Service(),
-			"endpoint": req.Endpoint(),
-			"method":   req.Method(),
-			"body":     req.Body(),
-		},
-	})
-
-	h := fnv.New64()
-	h.Write(bytes)
-	return fmt.Sprintf("%x", h.Sum(nil))
-}

client/cache_test.go

@@ -1,77 +0,0 @@
-package client
-
-import (
-	"context"
-	"testing"
-	"time"
-
-	"github.com/unistack-org/micro/v3/metadata"
-)
-
-func TestCache(t *testing.T) {
-	ctx := context.TODO()
-	req := &testRequest{service: "go.micro.service.foo", method: "Foo.Bar"}
-
-	t.Run("CacheMiss", func(t *testing.T) {
-		if _, ok := NewCache().Get(ctx, req); ok {
-			t.Errorf("Expected to get no result from Get")
-		}
-	})
-
-	t.Run("CacheHit", func(t *testing.T) {
-		c := NewCache()
-
-		rsp := "theresponse"
-		c.Set(ctx, req, rsp, time.Minute)
-
-		if res, ok := c.Get(ctx, req); !ok {
-			t.Errorf("Expected a result, got nothing")
-		} else if res != rsp {
-			t.Errorf("Expected '%v' result, got '%v'", rsp, res)
-		}
-	})
-}
-
-func TestCacheKey(t *testing.T) {
-	ctx := context.TODO()
-
-	req1 := &testRequest{service: "go.micro.service.foo", method: "Foo.Bar"}
-	req2 := &testRequest{service: "go.micro.service.foo", method: "Foo.Baz"}
-	req3 := &testRequest{service: "go.micro.service.foo", method: "Foo.Bar", body: "customquery"}
-
-	t.Run("IdenticalRequests", func(t *testing.T) {
-		key1 := key(ctx, req1)
-		key2 := key(ctx, req1)
-		if key1 != key2 {
-			t.Errorf("Expected the keys to match for identical requests and context")
-		}
-	})
-
-	t.Run("DifferentRequestEndpoints", func(t *testing.T) {
-		key1 := key(ctx, req1)
-		key2 := key(ctx, req2)
-
-		if key1 == key2 {
-			t.Errorf("Expected the keys to differ for different request endpoints")
-		}
-	})
-
-	t.Run("DifferentRequestBody", func(t *testing.T) {
-		key1 := key(ctx, req2)
-		key2 := key(ctx, req3)
-
-		if key1 == key2 {
-			t.Errorf("Expected the keys to differ for different request bodies")
-		}
-	})
-
-	t.Run("DifferentMetadata", func(t *testing.T) {
-		mdCtx := metadata.Set(context.TODO(), "Micro-Namespace", "bar")
-		key1 := key(mdCtx, req1)
-		key2 := key(ctx, req1)
-
-		if key1 == key2 {
-			t.Errorf("Expected the keys to differ for different metadata")
-		}
-	})
-}

client/client.go

@@ -9,7 +9,8 @@ import (
 )
 
 var (
-	DefaultClient Client
+	// DefaultClient is the global default client
+	DefaultClient Client = NewClient()
 )
 
 // Client is the interface used to make requests to services.

client/context.go

@@ -14,3 +14,13 @@ func FromContext(ctx context.Context) (Client, bool) {
 func NewContext(ctx context.Context, c Client) context.Context {
 	return context.WithValue(ctx, clientKey{}, c)
 }
+
+// SetPublishOption returns a function to setup a context with given value
+func SetPublishOption(k, v interface{}) PublishOption {
+	return func(o *PublishOptions) {
+		if o.Context == nil {
+			o.Context = context.Background()
+		}
+		o.Context = context.WithValue(o.Context, k, v)
+	}
+}

client/noop.go

@@ -0,0 +1,205 @@
+package client
+
+import (
+	"context"
+
+	raw "github.com/unistack-org/micro-codec-bytes"
+	json "github.com/unistack-org/micro-codec-json"
+	"github.com/unistack-org/micro/v3/broker"
+	"github.com/unistack-org/micro/v3/codec"
+	"github.com/unistack-org/micro/v3/errors"
+	"github.com/unistack-org/micro/v3/metadata"
+)
+
+type noopClient struct {
+	opts Options
+}
+
+type noopMessage struct {
+	topic   string
+	payload interface{}
+	opts    MessageOptions
+}
+
+type noopRequest struct {
+	service     string
+	method      string
+	endpoint    string
+	contentType string
+	body        interface{}
+	codec       codec.Writer
+	stream      bool
+}
+
+// NewClient returns new noop client
+func NewClient(opts ...Option) Client {
+	return &noopClient{opts: NewOptions(opts...)}
+}
+
+func (n *noopRequest) Service() string {
+	return n.service
+}
+
+func (n *noopRequest) Method() string {
+	return n.method
+}
+
+func (n *noopRequest) Endpoint() string {
+	return n.endpoint
+}
+
+func (n *noopRequest) ContentType() string {
+	return n.contentType
+}
+
+func (n *noopRequest) Body() interface{} {
+	return n.body
+}
+
+func (n *noopRequest) Codec() codec.Writer {
+	return n.codec
+}
+
+func (n *noopRequest) Stream() bool {
+	return n.stream
+}
+
+type noopResponse struct {
+	codec  codec.Reader
+	header map[string]string
+}
+
+func (n *noopResponse) Codec() codec.Reader {
+	return n.codec
+}
+
+func (n *noopResponse) Header() map[string]string {
+	return n.header
+}
+
+func (n *noopResponse) Read() ([]byte, error) {
+	return nil, nil
+}
+
+type noopStream struct{}
+
+func (n *noopStream) Context() context.Context {
+	return context.Background()
+}
+
+func (n *noopStream) Request() Request {
+	return &noopRequest{}
+}
+
+func (n *noopStream) Response() Response {
+	return &noopResponse{}
+}
+
+func (n *noopStream) Send(interface{}) error {
+	return nil
+}
+
+func (n *noopStream) Recv(interface{}) error {
+	return nil
+}
+
+func (n *noopStream) Error() error {
+	return nil
+}
+
+func (n *noopStream) Close() error {
+	return nil
+}
+
+func (n *noopMessage) Topic() string {
+	return n.topic
+}
+
+func (n *noopMessage) Payload() interface{} {
+	return n.payload
+}
+
+func (n *noopMessage) ContentType() string {
+	return n.opts.ContentType
+}
+
+func (n *noopClient) Init(opts ...Option) error {
+	for _, o := range opts {
+		o(&n.opts)
+	}
+	return nil
+}
+
+func (n *noopClient) Options() Options {
+	return n.opts
+}
+
+func (n *noopClient) String() string {
+	return "noop"
+}
+
+func (n *noopClient) Call(ctx context.Context, req Request, rsp interface{}, opts ...CallOption) error {
+	return nil
+}
+
+func (n *noopClient) NewRequest(service, endpoint string, req interface{}, opts ...RequestOption) Request {
+	return &noopRequest{}
+}
+
+func (n *noopClient) NewMessage(topic string, msg interface{}, opts ...MessageOption) Message {
+	options := NewMessageOptions(opts...)
+	return &noopMessage{topic: topic, payload: msg, opts: options}
+}
+
+func (n *noopClient) Stream(ctx context.Context, req Request, opts ...CallOption) (Stream, error) {
+	return &noopStream{}, nil
+}
+
+func (n *noopClient) Publish(ctx context.Context, p Message, opts ...PublishOption) error {
+	var body []byte
+
+	options := NewPublishOptions(opts...)
+
+	md, ok := metadata.FromContext(ctx)
+	if !ok {
+		md = metadata.New(0)
+	}
+	md["Content-Type"] = p.ContentType()
+	md["Micro-Topic"] = p.Topic()
+
+	// passed in raw data
+	if d, ok := p.Payload().(*raw.Frame); ok {
+		body = d.Data
+	} else {
+		cf := n.opts.Broker.Options().Codec
+		if cf == nil {
+			cf = json.Marshaler{}
+		}
+
+		/*
+			// use codec for payload
+			cf, err := n.opts.Codecs[p.ContentType()]
+			if err != nil {
+				return errors.InternalServerError("go.micro.client", err.Error())
+			}
+		*/
+		// set the body
+		b, err := cf.Marshal(p.Payload())
+		if err != nil {
+			return errors.InternalServerError("go.micro.client", err.Error())
+		}
+		body = b
+	}
+
+	topic := p.Topic()
+
+	// get the exchange
+	if len(options.Exchange) > 0 {
+		topic = options.Exchange
+	}
+
+	return n.opts.Broker.Publish(ctx, topic, &broker.Message{
+		Header: md,
+		Body:   body,
+	}, broker.PublishContext(options.Context))
+}

client/options.go

@@ -7,11 +7,11 @@ import (
 	"github.com/unistack-org/micro/v3/broker"
 	"github.com/unistack-org/micro/v3/codec"
 	"github.com/unistack-org/micro/v3/logger"
+	"github.com/unistack-org/micro/v3/network/transport"
 	"github.com/unistack-org/micro/v3/registry"
 	"github.com/unistack-org/micro/v3/router"
 	"github.com/unistack-org/micro/v3/selector"
 	"github.com/unistack-org/micro/v3/selector/random"
-	"github.com/unistack-org/micro/v3/transport"
 )
 
 type Options struct {
@@ -34,9 +34,6 @@ type Options struct {
 	PoolSize int
 	PoolTTL  time.Duration
 
-	// Response cache
-	Cache *Cache
-
 	// Middleware for client
 	Wrappers []Wrapper
 
@@ -48,13 +45,19 @@ type Options struct {
 	Context context.Context
 }
 
+func NewCallOptions(opts ...CallOption) CallOptions {
+	options := CallOptions{}
+	for _, o := range opts {
+		o(&options)
+	}
+	return options
+}
+
 type CallOptions struct {
 	// Address of remote hosts
 	Address []string
 	// Backoff func
 	Backoff BackoffFunc
-	// Duration to cache the response for
-	CacheExpiry time.Duration
 	// Transport Dial Timeout
 	DialTimeout time.Duration
 	// Number of Call attempts
@@ -84,6 +87,20 @@ type CallOptions struct {
 	Context context.Context
 }
 
+func Context(ctx context.Context) Option {
+	return func(o *Options) {
+		o.Context = ctx
+	}
+}
+
+func NewPublishOptions(opts ...PublishOption) PublishOptions {
+	options := PublishOptions{}
+	for _, o := range opts {
+		o(&options)
+	}
+	return options
+}
+
 type PublishOptions struct {
 	// Exchange is the routing exchange for the message
 	Exchange string
@@ -92,10 +109,26 @@ type PublishOptions struct {
 	Context context.Context
 }
 
+func NewMessageOptions(opts ...MessageOption) MessageOptions {
+	options := MessageOptions{}
+	for _, o := range opts {
+		o(&options)
+	}
+	return options
+}
+
 type MessageOptions struct {
 	ContentType string
 }
 
+func NewRequestOptions(opts ...RequestOption) RequestOptions {
+	options := RequestOptions{}
+	for _, o := range opts {
+		o(&options)
+	}
+	return options
+}
+
 type RequestOptions struct {
 	ContentType string
 	Stream      bool
@@ -105,9 +138,8 @@ type RequestOptions struct {
 	Context context.Context
 }
 
-func NewOptions(options ...Option) Options {
+func NewOptions(opts ...Option) Options {
-	opts := Options{
+	options := Options{
-		Cache:       NewCache(),
 		Context:     context.Background(),
 		ContentType: "application/protobuf",
 		Codecs:      make(map[string]codec.NewCodec),
@@ -122,13 +154,15 @@ func NewOptions(options ...Option) Options {
 		PoolSize: DefaultPoolSize,
 		PoolTTL:  DefaultPoolTTL,
 		Selector: random.NewSelector(),
+		Logger:   logger.DefaultLogger,
+		Broker:   broker.DefaultBroker,
 	}
 
-	for _, o := range options {
+	for _, o := range opts {
-		o(&opts)
+		o(&options)
 	}
 
-	return opts
+	return options
 }
 
 // Broker to be used for pub/sub
@@ -360,14 +394,6 @@ func WithAuthToken() CallOption {
 	}
 }
 
-// WithCache is a CallOption which sets the duration the response
-// shoull be cached for
-func WithCache(c time.Duration) CallOption {
-	return func(o *CallOptions) {
-		o.CacheExpiry = c
-	}
-}
-
 // WithNetwork is a CallOption which sets the network attribute
 func WithNetwork(n string) CallOption {
 	return func(o *CallOptions) {

client/test_request.go

@@ -14,28 +14,6 @@ type testRequest struct {
 	opts        RequestOptions
 }
 
-func newRequest(service, endpoint string, request interface{}, contentType string, reqOpts ...RequestOption) Request {
-	var opts RequestOptions
-
-	for _, o := range reqOpts {
-		o(&opts)
-	}
-
-	// set the content-type specified
-	if len(opts.ContentType) > 0 {
-		contentType = opts.ContentType
-	}
-
-	return &testRequest{
-		service:     service,
-		method:      endpoint,
-		endpoint:    endpoint,
-		body:        request,
-		contentType: contentType,
-		opts:        opts,
-	}
-}
-
 func (r *testRequest) ContentType() string {
 	return r.contentType
 }

cmd/protoc-gen-micro/plugin/micro/micro.go

@@ -236,7 +236,7 @@ func (g *micro) generateService(file *generator.FileDescriptor, service *pb.Serv
 		outType := g.typeName(method.GetOutputType())
 
 		if !method.GetServerStreaming() && !method.GetClientStreaming() {
-			g.P(methName, "(ctx ", contextPkg, ".Context, in *", inType, ", out *", outType, ") error")
+			g.P(methName, "(ctx ", contextPkg, ".Context, req *", inType, ", rsp *", outType, ") error")
 			continue
 		}
 		g.P(methName, "(ctx ", contextPkg, ".Context, stream server.Stream) error")
@@ -322,7 +322,7 @@ func (g *micro) generateClientSignature(servName string, method *pb.MethodDescri
 	if reservedClientName[methName] {
 		methName += "_"
 	}
-	reqArg := ", in *" + g.typeName(method.GetInputType())
+	reqArg := ", req *" + g.typeName(method.GetInputType())
 	if method.GetClientStreaming() {
 		reqArg = ""
 	}
@@ -335,8 +335,8 @@ func (g *micro) generateClientSignature(servName string, method *pb.MethodDescri
 }
 
 func (g *micro) generateClientMethod(reqServ, servName, serviceDescVar string, method *pb.MethodDescriptorProto, descExpr string) {
-	reqMethod := fmt.Sprintf("%s.%s", servName, method.GetName())
 	methName := generator.CamelCase(method.GetName())
+	reqMethod := fmt.Sprintf("%s.%s", servName, methName)
 	inType := g.typeName(method.GetInputType())
 	outType := g.typeName(method.GetOutputType())
 
@@ -349,23 +349,21 @@ func (g *micro) generateClientMethod(reqServ, servName, serviceDescVar string, m
 
 	g.P("func (c *", unexport(servAlias), ") ", g.generateClientSignature(servName, method), "{")
 	if !method.GetServerStreaming() && !method.GetClientStreaming() {
-		g.P(`req := c.c.NewRequest(c.name, "`, reqMethod, `", in)`)
+		g.P("rsp := &", outType, "{}")
-		g.P("out := new(", outType, ")")
 		// TODO: Pass descExpr to Invoke.
-		g.P("err := ", `c.c.Call(ctx, req, out, opts...)`)
+		g.P(`err := c.c.Call(ctx, c.c.NewRequest(c.name, "`, reqMethod, `", req), rsp, opts...)`)
 		g.P("if err != nil { return nil, err }")
-		g.P("return out, nil")
+		g.P("return rsp, nil")
 		g.P("}")
 		g.P()
 		return
 	}
 	streamType := unexport(servAlias) + methName
-	g.P(`req := c.c.NewRequest(c.name, "`, reqMethod, `", &`, inType, `{})`)
+	g.P(`stream, err := c.c.Stream(ctx, c.c.NewRequest(c.name, "`, reqMethod, `", &`, inType, `{}), opts...)`)
-	g.P("stream, err := c.c.Stream(ctx, req, opts...)")
 	g.P("if err != nil { return nil, err }")
 
 	if !method.GetClientStreaming() {
-		g.P("if err := stream.Send(in); err != nil { return nil, err }")
+		g.P("if err := stream.Send(req); err != nil { return nil, err }")
 	}
 
 	g.P("return &", streamType, "{stream}, nil")
@@ -380,6 +378,11 @@ func (g *micro) generateClientMethod(reqServ, servName, serviceDescVar string, m
 	g.P("Context() context.Context")
 	g.P("SendMsg(interface{}) error")
 	g.P("RecvMsg(interface{}) error")
+
+	if genSend && !genRecv {
+		// client streaming, the server will send a response upon close
+		g.P("CloseAndRecv() (*", outType, ", error)")
+	}
 	g.P("Close() error")
 
 	if genSend {
@@ -396,6 +399,18 @@ func (g *micro) generateClientMethod(reqServ, servName, serviceDescVar string, m
 	g.P("}")
 	g.P()
 
+	if genSend && !genRecv {
+		// client streaming, the server will send a response upon close
+		g.P("func (x *", streamType, ") CloseAndRecv() (*", outType, ", error) {")
+		g.P("if err := x.stream.Close(); err != nil {")
+		g.P("return nil, err")
+		g.P("}")
+		g.P("r := new(", outType, ")")
+		g.P("err := x.RecvMsg(r)")
+		g.P("return r, err")
+		g.P("}")
+		g.P()
+	}
 	g.P("func (x *", streamType, ") Close() error {")
 	g.P("return x.stream.Close()")
 	g.P("}")
@@ -426,7 +441,7 @@ func (g *micro) generateClientMethod(reqServ, servName, serviceDescVar string, m
 
 	if genRecv {
 		g.P("func (x *", streamType, ") Recv() (*", outType, ", error) {")
-		g.P("m := new(", outType, ")")
+		g.P("m := &", outType, "{}")
 		g.P("err := x.stream.Recv(m)")
 		g.P("if err != nil {")
 		g.P("return nil, err")
@@ -469,8 +484,8 @@ func (g *micro) generateServerMethod(servName string, method *pb.MethodDescripto
 	outType := g.typeName(method.GetOutputType())
 
 	if !method.GetServerStreaming() && !method.GetClientStreaming() {
-		g.P("func (h *", unexport(servName), "Handler) ", methName, "(ctx ", contextPkg, ".Context, in *", inType, ", out *", outType, ") error {")
+		g.P("func (h *", unexport(servName), "Handler) ", methName, "(ctx ", contextPkg, ".Context, req *", inType, ", rsp *", outType, ") error {")
-		g.P("return h.", serveType, ".", methName, "(ctx, in, out)")
+		g.P("return h.", serveType, ".", methName, "(ctx, req, rsp)")
 		g.P("}")
 		g.P()
 		return hname
@@ -478,7 +493,7 @@ func (g *micro) generateServerMethod(servName string, method *pb.MethodDescripto
 	streamType := unexport(servName) + methName + "Stream"
 	g.P("func (h *", unexport(servName), "Handler) ", methName, "(ctx ", contextPkg, ".Context, stream server.Stream) error {")
 	if !method.GetClientStreaming() {
-		g.P("m := new(", inType, ")")
+		g.P("m := &", inType, "{}")
 		g.P("if err := stream.Recv(m); err != nil { return err }")
 		g.P("return h.", serveType, ".", methName, "(ctx, m, &", streamType, "{stream})")
 	} else {
@@ -495,6 +510,10 @@ func (g *micro) generateServerMethod(servName string, method *pb.MethodDescripto
 	g.P("Context() context.Context")
 	g.P("SendMsg(interface{}) error")
 	g.P("RecvMsg(interface{}) error")
+	if !genSend {
+		// client streaming, the server will send a response upon close
+		g.P("SendAndClose(*", outType, ")  error")
+	}
 	g.P("Close() error")
 
 	if genSend {
@@ -513,6 +532,17 @@ func (g *micro) generateServerMethod(servName string, method *pb.MethodDescripto
 	g.P("}")
 	g.P()
 
+	if !genSend {
+		// client streaming, the server will send a response upon close
+		g.P("func (x *", streamType, ") SendAndClose(in *", outType, ") error {")
+		g.P("if err := x.SendMsg(in); err != nil {")
+		g.P("return err")
+		g.P("}")
+		g.P("return x.stream.Close()")
+		g.P("}")
+		g.P()
+	}
+	// other types of rpc don't send a response when the stream closes
 	g.P("func (x *", streamType, ") Close() error {")
 	g.P("return x.stream.Close()")
 	g.P("}")
@@ -542,7 +572,7 @@ func (g *micro) generateServerMethod(servName string, method *pb.MethodDescripto
 
 	if genRecv {
 		g.P("func (x *", streamType, ") Recv() (*", inType, ", error) {")
-		g.P("m := new(", inType, ")")
+		g.P("m := &", inType, "{}")
 		g.P("if err := x.stream.Recv(m); err != nil { return nil, err }")
 		g.P("return m, nil")
 		g.P("}")

codec/codec.go

@@ -14,12 +14,14 @@ const (
 )
 
 var (
+	// ErrInvalidMessage returned when invalid messge passed to codec
 	ErrInvalidMessage = errors.New("invalid message")
 )
 
+// MessageType
 type MessageType int
 
-// Takes in a connection/buffer and returns a new Codec
+// NewCodec takes in a connection/buffer and returns a new Codec
 type NewCodec func(io.ReadWriteCloser) Codec
 
 // Codec encodes/decodes various types of messages used within go-micro.
@@ -34,11 +36,13 @@ type Codec interface {
 	String() string
 }
 
+// Reader interface
 type Reader interface {
 	ReadHeader(*Message, MessageType) error
 	ReadBody(interface{}) error
 }
 
+// Writer interface
 type Writer interface {
 	Write(*Message, interface{}) error
 }

codec/json/json.go

@@ -1,59 +0,0 @@
-// Package json provides a json codec
-package json
-
-import (
-	"encoding/json"
-	"io"
-	"io/ioutil"
-
-	"github.com/unistack-org/micro/v3/codec"
-	jsonpb "google.golang.org/protobuf/encoding/protojson"
-	"google.golang.org/protobuf/proto"
-)
-
-type Codec struct {
-	Conn    io.ReadWriteCloser
-	Encoder *json.Encoder
-	Decoder *json.Decoder
-}
-
-func (c *Codec) ReadHeader(m *codec.Message, t codec.MessageType) error {
-	return nil
-}
-
-func (c *Codec) ReadBody(b interface{}) error {
-	if b == nil {
-		return nil
-	}
-	if pb, ok := b.(proto.Message); ok {
-		buf, err := ioutil.ReadAll(c.Conn)
-		if err != nil {
-			return err
-		}
-		return jsonpb.Unmarshal(buf, pb)
-	}
-	return c.Decoder.Decode(b)
-}
-
-func (c *Codec) Write(m *codec.Message, b interface{}) error {
-	if b == nil {
-		return nil
-	}
-	return c.Encoder.Encode(b)
-}
-
-func (c *Codec) Close() error {
-	return c.Conn.Close()
-}
-
-func (c *Codec) String() string {
-	return "json"
-}
-
-func NewCodec(c io.ReadWriteCloser) codec.Codec {
-	return &Codec{
-		Conn:    c,
-		Decoder: json.NewDecoder(c),
-		Encoder: json.NewEncoder(c),
-	}
-}

codec/json/marshaler.go

@@ -1,38 +0,0 @@
-package json
-
-import (
-	"encoding/json"
-
-	"github.com/oxtoacart/bpool"
-	jsonpb "google.golang.org/protobuf/encoding/protojson"
-	"google.golang.org/protobuf/proto"
-)
-
-var jsonpbMarshaler = &jsonpb.MarshalOptions{}
-
-// create buffer pool with 16 instances each preallocated with 256 bytes
-var bufferPool = bpool.NewSizedBufferPool(16, 256)
-
-type Marshaler struct{}
-
-func (j Marshaler) Marshal(v interface{}) ([]byte, error) {
-	if pb, ok := v.(proto.Message); ok {
-		buf, err := jsonpbMarshaler.Marshal(pb)
-		if err != nil {
-			return nil, err
-		}
-		return buf, nil
-	}
-	return json.Marshal(v)
-}
-
-func (j Marshaler) Unmarshal(d []byte, v interface{}) error {
-	if pb, ok := v.(proto.Message); ok {
-		return jsonpb.Unmarshal(d, pb)
-	}
-	return json.Unmarshal(d, v)
-}
-
-func (j Marshaler) String() string {
-	return "json"
-}

codec/jsonrpc/client.go

@@ -1,97 +0,0 @@
-package jsonrpc
-
-import (
-	"encoding/json"
-	"fmt"
-	"io"
-	"sync"
-
-	"github.com/unistack-org/micro/v3/codec"
-)
-
-type clientCodec struct {
-	dec *json.Decoder // for reading JSON values
-	enc *json.Encoder // for writing JSON values
-	c   io.Closer
-
-	// temporary work space
-	req  clientRequest
-	resp clientResponse
-
-	sync.Mutex
-	pending map[interface{}]string
-}
-
-type clientRequest struct {
-	Method string         `json:"method"`
-	Params [1]interface{} `json:"params"`
-	ID     interface{}    `json:"id"`
-}
-
-type clientResponse struct {
-	ID     interface{}      `json:"id"`
-	Result *json.RawMessage `json:"result"`
-	Error  interface{}      `json:"error"`
-}
-
-func newClientCodec(conn io.ReadWriteCloser) *clientCodec {
-	return &clientCodec{
-		dec:     json.NewDecoder(conn),
-		enc:     json.NewEncoder(conn),
-		c:       conn,
-		pending: make(map[interface{}]string),
-	}
-}
-
-func (c *clientCodec) Write(m *codec.Message, b interface{}) error {
-	c.Lock()
-	c.pending[m.Id] = m.Method
-	c.Unlock()
-	c.req.Method = m.Method
-	c.req.Params[0] = b
-	c.req.ID = m.Id
-	return c.enc.Encode(&c.req)
-}
-
-func (r *clientResponse) reset() {
-	r.ID = 0
-	r.Result = nil
-	r.Error = nil
-}
-
-func (c *clientCodec) ReadHeader(m *codec.Message) error {
-	c.resp.reset()
-	if err := c.dec.Decode(&c.resp); err != nil {
-		return err
-	}
-
-	c.Lock()
-	m.Method = c.pending[c.resp.ID]
-	delete(c.pending, c.resp.ID)
-	c.Unlock()
-
-	m.Error = ""
-	m.Id = fmt.Sprintf("%v", c.resp.ID)
-	if c.resp.Error != nil {
-		x, ok := c.resp.Error.(string)
-		if !ok {
-			return fmt.Errorf("invalid error %v", c.resp.Error)
-		}
-		if x == "" {
-			x = "unspecified error"
-		}
-		m.Error = x
-	}
-	return nil
-}
-
-func (c *clientCodec) ReadBody(x interface{}) error {
-	if x == nil || c.resp.Result == nil {
-		return nil
-	}
-	return json.Unmarshal(*c.resp.Result, x)
-}
-
-func (c *clientCodec) Close() error {
-	return c.c.Close()
-}

codec/jsonrpc/jsonrpc.go

@@ -1,88 +0,0 @@
-// Package jsonrpc provides a json-rpc 1.0 codec
-package jsonrpc
-
-import (
-	"bytes"
-	"encoding/json"
-	"fmt"
-	"io"
-
-	"github.com/unistack-org/micro/v3/codec"
-)
-
-type jsonCodec struct {
-	buf *bytes.Buffer
-	mt  codec.MessageType
-	rwc io.ReadWriteCloser
-	c   *clientCodec
-	s   *serverCodec
-}
-
-func (j *jsonCodec) Close() error {
-	j.buf.Reset()
-	return j.rwc.Close()
-}
-
-func (j *jsonCodec) String() string {
-	return "json-rpc"
-}
-
-func (j *jsonCodec) Write(m *codec.Message, b interface{}) error {
-	switch m.Type {
-	case codec.Request:
-		return j.c.Write(m, b)
-	case codec.Response, codec.Error:
-		return j.s.Write(m, b)
-	case codec.Event:
-		data, err := json.Marshal(b)
-		if err != nil {
-			return err
-		}
-		_, err = j.rwc.Write(data)
-		return err
-	default:
-		return fmt.Errorf("Unrecognised message type: %v", m.Type)
-	}
-}
-
-func (j *jsonCodec) ReadHeader(m *codec.Message, mt codec.MessageType) error {
-	j.buf.Reset()
-	j.mt = mt
-
-	switch mt {
-	case codec.Request:
-		return j.s.ReadHeader(m)
-	case codec.Response:
-		return j.c.ReadHeader(m)
-	case codec.Event:
-		_, err := io.Copy(j.buf, j.rwc)
-		return err
-	default:
-		return fmt.Errorf("Unrecognised message type: %v", mt)
-	}
-}
-
-func (j *jsonCodec) ReadBody(b interface{}) error {
-	switch j.mt {
-	case codec.Request:
-		return j.s.ReadBody(b)
-	case codec.Response:
-		return j.c.ReadBody(b)
-	case codec.Event:
-		if b != nil {
-			return json.Unmarshal(j.buf.Bytes(), b)
-		}
-	default:
-		return fmt.Errorf("Unrecognised message type: %v", j.mt)
-	}
-	return nil
-}
-
-func NewCodec(rwc io.ReadWriteCloser) codec.Codec {
-	return &jsonCodec{
-		buf: bytes.NewBuffer(nil),
-		rwc: rwc,
-		c:   newClientCodec(rwc),
-		s:   newServerCodec(rwc),
-	}
-}

codec/jsonrpc/server.go

@@ -1,84 +0,0 @@
-package jsonrpc
-
-import (
-	"encoding/json"
-	"fmt"
-	"io"
-
-	"github.com/unistack-org/micro/v3/codec"
-)
-
-type serverCodec struct {
-	dec *json.Decoder // for reading JSON values
-	enc *json.Encoder // for writing JSON values
-	c   io.Closer
-
-	// temporary work space
-	req serverRequest
-}
-
-type serverRequest struct {
-	Method string           `json:"method"`
-	Params *json.RawMessage `json:"params"`
-	ID     interface{}      `json:"id"`
-}
-
-type serverResponse struct {
-	ID     interface{} `json:"id"`
-	Result interface{} `json:"result"`
-	Error  interface{} `json:"error"`
-}
-
-func newServerCodec(conn io.ReadWriteCloser) *serverCodec {
-	return &serverCodec{
-		dec: json.NewDecoder(conn),
-		enc: json.NewEncoder(conn),
-		c:   conn,
-	}
-}
-
-func (r *serverRequest) reset() {
-	r.Method = ""
-	if r.Params != nil {
-		*r.Params = (*r.Params)[0:0]
-	}
-	if r.ID != nil {
-		r.ID = nil
-	}
-}
-
-func (c *serverCodec) ReadHeader(m *codec.Message) error {
-	c.req.reset()
-	if err := c.dec.Decode(&c.req); err != nil {
-		return err
-	}
-	m.Method = c.req.Method
-	m.Id = fmt.Sprintf("%v", c.req.ID)
-	c.req.ID = nil
-	return nil
-}
-
-func (c *serverCodec) ReadBody(x interface{}) error {
-	if x == nil {
-		return nil
-	}
-	var params [1]interface{}
-	params[0] = x
-	return json.Unmarshal(*c.req.Params, &params)
-}
-
-func (c *serverCodec) Write(m *codec.Message, x interface{}) error {
-	var resp serverResponse
-	resp.ID = m.Id
-	resp.Result = x
-	if m.Error == "" {
-		resp.Error = nil
-	} else {
-		resp.Error = m.Error
-	}
-	return c.enc.Encode(resp)
-}
-
-func (c *serverCodec) Close() error {
-	return c.c.Close()
-}

codec/proto/marshaler.go

@@ -1,47 +0,0 @@
-package proto
-
-import (
-	"bytes"
-
-	"github.com/golang/protobuf/proto"
-	"github.com/oxtoacart/bpool"
-	"github.com/unistack-org/micro/v3/codec"
-)
-
-// create buffer pool with 16 instances each preallocated with 256 bytes
-var bufferPool = bpool.NewSizedBufferPool(16, 256)
-
-type Marshaler struct{}
-
-func (Marshaler) Marshal(v interface{}) ([]byte, error) {
-	pb, ok := v.(proto.Message)
-	if !ok {
-		return nil, codec.ErrInvalidMessage
-	}
-
-	// looks not good, but allows to reuse underlining bytes
-	buf := bufferPool.Get()
-	pbuf := proto.NewBuffer(buf.Bytes())
-	defer func() {
-		bufferPool.Put(bytes.NewBuffer(pbuf.Bytes()))
-	}()
-
-	if err := pbuf.Marshal(pb); err != nil {
-		return nil, err
-	}
-
-	return pbuf.Bytes(), nil
-}
-
-func (Marshaler) Unmarshal(data []byte, v interface{}) error {
-	pb, ok := v.(proto.Message)
-	if !ok {
-		return codec.ErrInvalidMessage
-	}
-
-	return proto.Unmarshal(data, pb)
-}
-
-func (Marshaler) String() string {
-	return "proto"
-}

codec/proto/message.go

@@ -1,37 +0,0 @@
-package proto
-
-type Message struct {
-	Data []byte
-}
-
-func (m *Message) MarshalJSON() ([]byte, error) {
-	return m.Data, nil
-}
-
-func (m *Message) UnmarshalJSON(data []byte) error {
-	m.Data = data
-	return nil
-}
-
-func (m *Message) ProtoMessage() {}
-
-func (m *Message) Reset() {
-	*m = Message{}
-}
-
-func (m *Message) String() string {
-	return string(m.Data)
-}
-
-func (m *Message) Marshal() ([]byte, error) {
-	return m.Data, nil
-}
-
-func (m *Message) Unmarshal(data []byte) error {
-	m.Data = data
-	return nil
-}
-
-func NewMessage(data []byte) *Message {
-	return &Message{data}
-}

codec/proto/proto.go

@@ -1,64 +0,0 @@
-// Package proto provides a proto codec
-package proto
-
-import (
-	"io"
-	"io/ioutil"
-
-	"github.com/unistack-org/micro/v3/codec"
-	"google.golang.org/protobuf/proto"
-)
-
-type Codec struct {
-	Conn io.ReadWriteCloser
-}
-
-func (c *Codec) ReadHeader(m *codec.Message, t codec.MessageType) error {
-	return nil
-}
-
-func (c *Codec) ReadBody(b interface{}) error {
-	if b == nil {
-		return nil
-	}
-	buf, err := ioutil.ReadAll(c.Conn)
-	if err != nil {
-		return err
-	}
-	m, ok := b.(proto.Message)
-	if !ok {
-		return codec.ErrInvalidMessage
-	}
-	return proto.Unmarshal(buf, m)
-}
-
-func (c *Codec) Write(m *codec.Message, b interface{}) error {
-	if b == nil {
-		// Nothing to write
-		return nil
-	}
-	p, ok := b.(proto.Message)
-	if !ok {
-		return codec.ErrInvalidMessage
-	}
-	buf, err := proto.Marshal(p)
-	if err != nil {
-		return err
-	}
-	_, err = c.Conn.Write(buf)
-	return err
-}
-
-func (c *Codec) Close() error {
-	return c.Conn.Close()
-}
-
-func (c *Codec) String() string {
-	return "proto"
-}
-
-func NewCodec(c io.ReadWriteCloser) codec.Codec {
-	return &Codec{
-		Conn: c,
-	}
-}

codec/protorpc/envelope.pb.go

@@ -1,238 +0,0 @@
-// Code generated by protoc-gen-go. DO NOT EDIT.
-// versions:
-// 	protoc-gen-go v1.25.0
-// 	protoc        v3.6.1
-// source: codec/protorpc/envelope.proto
-
-package protorpc
-
-import (
-	proto "github.com/golang/protobuf/proto"
-	protoreflect "google.golang.org/protobuf/reflect/protoreflect"
-	protoimpl "google.golang.org/protobuf/runtime/protoimpl"
-	reflect "reflect"
-	sync "sync"
-)
-
-const (
-	// Verify that this generated code is sufficiently up-to-date.
-	_ = protoimpl.EnforceVersion(20 - protoimpl.MinVersion)
-	// Verify that runtime/protoimpl is sufficiently up-to-date.
-	_ = protoimpl.EnforceVersion(protoimpl.MaxVersion - 20)
-)
-
-// This is a compile-time assertion that a sufficiently up-to-date version
-// of the legacy proto package is being used.
-const _ = proto.ProtoPackageIsVersion4
-
-type Request struct {
-	state         protoimpl.MessageState
-	sizeCache     protoimpl.SizeCache
-	unknownFields protoimpl.UnknownFields
-
-	ServiceMethod string `protobuf:"bytes,1,opt,name=service_method,json=serviceMethod,proto3" json:"service_method,omitempty"`
-	Seq           uint64 `protobuf:"fixed64,2,opt,name=seq,proto3" json:"seq,omitempty"`
-}
-
-func (x *Request) Reset() {
-	*x = Request{}
-	if protoimpl.UnsafeEnabled {
-		mi := &file_codec_protorpc_envelope_proto_msgTypes[0]
-		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
-		ms.StoreMessageInfo(mi)
-	}
-}
-
-func (x *Request) String() string {
-	return protoimpl.X.MessageStringOf(x)
-}
-
-func (*Request) ProtoMessage() {}
-
-func (x *Request) ProtoReflect() protoreflect.Message {
-	mi := &file_codec_protorpc_envelope_proto_msgTypes[0]
-	if protoimpl.UnsafeEnabled && x != nil {
-		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
-		if ms.LoadMessageInfo() == nil {
-			ms.StoreMessageInfo(mi)
-		}
-		return ms
-	}
-	return mi.MessageOf(x)
-}
-
-// Deprecated: Use Request.ProtoReflect.Descriptor instead.
-func (*Request) Descriptor() ([]byte, []int) {
-	return file_codec_protorpc_envelope_proto_rawDescGZIP(), []int{0}
-}
-
-func (x *Request) GetServiceMethod() string {
-	if x != nil {
-		return x.ServiceMethod
-	}
-	return ""
-}
-
-func (x *Request) GetSeq() uint64 {
-	if x != nil {
-		return x.Seq
-	}
-	return 0
-}
-
-type Response struct {
-	state         protoimpl.MessageState
-	sizeCache     protoimpl.SizeCache
-	unknownFields protoimpl.UnknownFields
-
-	ServiceMethod string `protobuf:"bytes,1,opt,name=service_method,json=serviceMethod,proto3" json:"service_method,omitempty"`
-	Seq           uint64 `protobuf:"fixed64,2,opt,name=seq,proto3" json:"seq,omitempty"`
-	Error         string `protobuf:"bytes,3,opt,name=error,proto3" json:"error,omitempty"`
-}
-
-func (x *Response) Reset() {
-	*x = Response{}
-	if protoimpl.UnsafeEnabled {
-		mi := &file_codec_protorpc_envelope_proto_msgTypes[1]
-		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
-		ms.StoreMessageInfo(mi)
-	}
-}
-
-func (x *Response) String() string {
-	return protoimpl.X.MessageStringOf(x)
-}
-
-func (*Response) ProtoMessage() {}
-
-func (x *Response) ProtoReflect() protoreflect.Message {
-	mi := &file_codec_protorpc_envelope_proto_msgTypes[1]
-	if protoimpl.UnsafeEnabled && x != nil {
-		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
-		if ms.LoadMessageInfo() == nil {
-			ms.StoreMessageInfo(mi)
-		}
-		return ms
-	}
-	return mi.MessageOf(x)
-}
-
-// Deprecated: Use Response.ProtoReflect.Descriptor instead.
-func (*Response) Descriptor() ([]byte, []int) {
-	return file_codec_protorpc_envelope_proto_rawDescGZIP(), []int{1}
-}
-
-func (x *Response) GetServiceMethod() string {
-	if x != nil {
-		return x.ServiceMethod
-	}
-	return ""
-}
-
-func (x *Response) GetSeq() uint64 {
-	if x != nil {
-		return x.Seq
-	}
-	return 0
-}
-
-func (x *Response) GetError() string {
-	if x != nil {
-		return x.Error
-	}
-	return ""
-}
-
-var File_codec_protorpc_envelope_proto protoreflect.FileDescriptor
-
-var file_codec_protorpc_envelope_proto_rawDesc = []byte{
-	0x0a, 0x1d, 0x63, 0x6f, 0x64, 0x65, 0x63, 0x2f, 0x70, 0x72, 0x6f, 0x74, 0x6f, 0x72, 0x70, 0x63,
-	0x2f, 0x65, 0x6e, 0x76, 0x65, 0x6c, 0x6f, 0x70, 0x65, 0x2e, 0x70, 0x72, 0x6f, 0x74, 0x6f, 0x12,
-	0x08, 0x70, 0x72, 0x6f, 0x74, 0x6f, 0x72, 0x70, 0x63, 0x22, 0x42, 0x0a, 0x07, 0x52, 0x65, 0x71,
-	0x75, 0x65, 0x73, 0x74, 0x12, 0x25, 0x0a, 0x0e, 0x73, 0x65, 0x72, 0x76, 0x69, 0x63, 0x65, 0x5f,
-	0x6d, 0x65, 0x74, 0x68, 0x6f, 0x64, 0x18, 0x01, 0x20, 0x01, 0x28, 0x09, 0x52, 0x0d, 0x73, 0x65,
-	0x72, 0x76, 0x69, 0x63, 0x65, 0x4d, 0x65, 0x74, 0x68, 0x6f, 0x64, 0x12, 0x10, 0x0a, 0x03, 0x73,
-	0x65, 0x71, 0x18, 0x02, 0x20, 0x01, 0x28, 0x06, 0x52, 0x03, 0x73, 0x65, 0x71, 0x22, 0x59, 0x0a,
-	0x08, 0x52, 0x65, 0x73, 0x70, 0x6f, 0x6e, 0x73, 0x65, 0x12, 0x25, 0x0a, 0x0e, 0x73, 0x65, 0x72,
-	0x76, 0x69, 0x63, 0x65, 0x5f, 0x6d, 0x65, 0x74, 0x68, 0x6f, 0x64, 0x18, 0x01, 0x20, 0x01, 0x28,
-	0x09, 0x52, 0x0d, 0x73, 0x65, 0x72, 0x76, 0x69, 0x63, 0x65, 0x4d, 0x65, 0x74, 0x68, 0x6f, 0x64,
-	0x12, 0x10, 0x0a, 0x03, 0x73, 0x65, 0x71, 0x18, 0x02, 0x20, 0x01, 0x28, 0x06, 0x52, 0x03, 0x73,
-	0x65, 0x71, 0x12, 0x14, 0x0a, 0x05, 0x65, 0x72, 0x72, 0x6f, 0x72, 0x18, 0x03, 0x20, 0x01, 0x28,
-	0x09, 0x52, 0x05, 0x65, 0x72, 0x72, 0x6f, 0x72, 0x62, 0x06, 0x70, 0x72, 0x6f, 0x74, 0x6f, 0x33,
-}
-
-var (
-	file_codec_protorpc_envelope_proto_rawDescOnce sync.Once
-	file_codec_protorpc_envelope_proto_rawDescData = file_codec_protorpc_envelope_proto_rawDesc
-)
-
-func file_codec_protorpc_envelope_proto_rawDescGZIP() []byte {
-	file_codec_protorpc_envelope_proto_rawDescOnce.Do(func() {
-		file_codec_protorpc_envelope_proto_rawDescData = protoimpl.X.CompressGZIP(file_codec_protorpc_envelope_proto_rawDescData)
-	})
-	return file_codec_protorpc_envelope_proto_rawDescData
-}
-
-var file_codec_protorpc_envelope_proto_msgTypes = make([]protoimpl.MessageInfo, 2)
-var file_codec_protorpc_envelope_proto_goTypes = []interface{}{
-	(*Request)(nil),  // 0: protorpc.Request
-	(*Response)(nil), // 1: protorpc.Response
-}
-var file_codec_protorpc_envelope_proto_depIdxs = []int32{
-	0, // [0:0] is the sub-list for method output_type
-	0, // [0:0] is the sub-list for method input_type
-	0, // [0:0] is the sub-list for extension type_name
-	0, // [0:0] is the sub-list for extension extendee
-	0, // [0:0] is the sub-list for field type_name
-}
-
-func init() { file_codec_protorpc_envelope_proto_init() }
-func file_codec_protorpc_envelope_proto_init() {
-	if File_codec_protorpc_envelope_proto != nil {
-		return
-	}
-	if !protoimpl.UnsafeEnabled {
-		file_codec_protorpc_envelope_proto_msgTypes[0].Exporter = func(v interface{}, i int) interface{} {
-			switch v := v.(*Request); i {
-			case 0:
-				return &v.state
-			case 1:
-				return &v.sizeCache
-			case 2:
-				return &v.unknownFields
-			default:
-				return nil
-			}
-		}
-		file_codec_protorpc_envelope_proto_msgTypes[1].Exporter = func(v interface{}, i int) interface{} {
-			switch v := v.(*Response); i {
-			case 0:
-				return &v.state
-			case 1:
-				return &v.sizeCache
-			case 2:
-				return &v.unknownFields
-			default:
-				return nil
-			}
-		}
-	}
-	type x struct{}
-	out := protoimpl.TypeBuilder{
-		File: protoimpl.DescBuilder{
-			GoPackagePath: reflect.TypeOf(x{}).PkgPath(),
-			RawDescriptor: file_codec_protorpc_envelope_proto_rawDesc,
-			NumEnums:      0,
-			NumMessages:   2,
-			NumExtensions: 0,
-			NumServices:   0,
-		},
-		GoTypes:           file_codec_protorpc_envelope_proto_goTypes,
-		DependencyIndexes: file_codec_protorpc_envelope_proto_depIdxs,
-		MessageInfos:      file_codec_protorpc_envelope_proto_msgTypes,
-	}.Build()
-	File_codec_protorpc_envelope_proto = out.File
-	file_codec_protorpc_envelope_proto_rawDesc = nil
-	file_codec_protorpc_envelope_proto_goTypes = nil
-	file_codec_protorpc_envelope_proto_depIdxs = nil
-}

codec/protorpc/envelope.pb.micro.go

@@ -1,21 +0,0 @@
-// Code generated by protoc-gen-micro. DO NOT EDIT.
-// source: codec/protorpc/envelope.proto
-
-package protorpc
-
-import (
-	fmt "fmt"
-	proto "github.com/golang/protobuf/proto"
-	math "math"
-)
-
-// Reference imports to suppress errors if they are not otherwise used.
-var _ = proto.Marshal
-var _ = fmt.Errorf
-var _ = math.Inf
-
-// This is a compile-time assertion to ensure that this generated file
-// is compatible with the proto package it is being compiled against.
-// A compilation error at this line likely means your copy of the
-// proto package needs to be updated.
-const _ = proto.ProtoPackageIsVersion3 // please upgrade the proto package

codec/protorpc/envelope.proto

@@ -1,14 +0,0 @@
-syntax = "proto3";
-
-package protorpc;
-
-message Request {
-	string service_method = 1;
-	fixed64 seq = 2;
-}
-
-message Response {
-	string service_method = 1;
-	fixed64 seq = 2;
-	string error = 3;
-}

codec/protorpc/netstring.go

@@ -1,36 +0,0 @@
-package protorpc
-
-import (
-	"encoding/binary"
-	"io"
-)
-
-// WriteNetString writes data to a big-endian netstring on a Writer.
-// Size is always a 32-bit unsigned int.
-func WriteNetString(w io.Writer, data []byte) (written int, err error) {
-	size := make([]byte, 4)
-	binary.BigEndian.PutUint32(size, uint32(len(data)))
-	if written, err = w.Write(size); err != nil {
-		return
-	}
-	return w.Write(data)
-}
-
-// ReadNetString reads data from a big-endian netstring.
-func ReadNetString(r io.Reader) (data []byte, err error) {
-	sizeBuf := make([]byte, 4)
-	_, err = r.Read(sizeBuf)
-	if err != nil {
-		return nil, err
-	}
-	size := binary.BigEndian.Uint32(sizeBuf)
-	if size == 0 {
-		return nil, nil
-	}
-	data = make([]byte, size)
-	_, err = r.Read(data)
-	if err != nil {
-		return nil, err
-	}
-	return
-}

codec/protorpc/protorpc.go

@@ -1,186 +0,0 @@
-// Protorpc provides a net/rpc proto-rpc codec. See envelope.proto for the format.
-package protorpc
-
-import (
-	"bytes"
-	"fmt"
-	"io"
-	"strconv"
-	"sync"
-
-	"github.com/golang/protobuf/proto"
-	"github.com/unistack-org/micro/v3/codec"
-)
-
-type flusher interface {
-	Flush() error
-}
-
-type protoCodec struct {
-	sync.Mutex
-	rwc io.ReadWriteCloser
-	mt  codec.MessageType
-	buf *bytes.Buffer
-}
-
-func (c *protoCodec) Close() error {
-	c.buf.Reset()
-	return c.rwc.Close()
-}
-
-func (c *protoCodec) String() string {
-	return "proto-rpc"
-}
-
-func id(id string) uint64 {
-	p, err := strconv.ParseInt(id, 10, 64)
-	if err != nil {
-		p = 0
-	}
-	i := uint64(p)
-	return i
-}
-
-func (c *protoCodec) Write(m *codec.Message, b interface{}) error {
-	switch m.Type {
-	case codec.Request:
-		c.Lock()
-		defer c.Unlock()
-		// This is protobuf, of course we copy it.
-		pbr := &Request{ServiceMethod: m.Method, Seq: id(m.Id)}
-		data, err := proto.Marshal(pbr)
-		if err != nil {
-			return err
-		}
-		_, err = WriteNetString(c.rwc, data)
-		if err != nil {
-			return err
-		}
-		// dont trust or incoming message
-		m, ok := b.(proto.Message)
-		if !ok {
-			return codec.ErrInvalidMessage
-		}
-		data, err = proto.Marshal(m)
-		if err != nil {
-			return err
-		}
-		_, err = WriteNetString(c.rwc, data)
-		if err != nil {
-			return err
-		}
-		if flusher, ok := c.rwc.(flusher); ok {
-			if err = flusher.Flush(); err != nil {
-				return err
-			}
-		}
-	case codec.Response, codec.Error:
-		c.Lock()
-		defer c.Unlock()
-		rtmp := &Response{ServiceMethod: m.Method, Seq: id(m.Id), Error: m.Error}
-		data, err := proto.Marshal(rtmp)
-		if err != nil {
-			return err
-		}
-		_, err = WriteNetString(c.rwc, data)
-		if err != nil {
-			return err
-		}
-		if pb, ok := b.(proto.Message); ok {
-			data, err = proto.Marshal(pb)
-			if err != nil {
-				return err
-			}
-		} else {
-			data = nil
-		}
-		_, err = WriteNetString(c.rwc, data)
-		if err != nil {
-			return err
-		}
-		if flusher, ok := c.rwc.(flusher); ok {
-			if err = flusher.Flush(); err != nil {
-				return err
-			}
-		}
-	case codec.Event:
-		m, ok := b.(proto.Message)
-		if !ok {
-			return codec.ErrInvalidMessage
-		}
-		data, err := proto.Marshal(m)
-		if err != nil {
-			return err
-		}
-		c.rwc.Write(data)
-	default:
-		return fmt.Errorf("Unrecognised message type: %v", m.Type)
-	}
-	return nil
-}
-
-func (c *protoCodec) ReadHeader(m *codec.Message, mt codec.MessageType) error {
-	c.buf.Reset()
-	c.mt = mt
-
-	switch mt {
-	case codec.Request:
-		data, err := ReadNetString(c.rwc)
-		if err != nil {
-			return err
-		}
-		rtmp := new(Request)
-		err = proto.Unmarshal(data, rtmp)
-		if err != nil {
-			return err
-		}
-		m.Method = rtmp.GetServiceMethod()
-		m.Id = fmt.Sprintf("%d", rtmp.GetSeq())
-	case codec.Response:
-		data, err := ReadNetString(c.rwc)
-		if err != nil {
-			return err
-		}
-		rtmp := new(Response)
-		err = proto.Unmarshal(data, rtmp)
-		if err != nil {
-			return err
-		}
-		m.Method = rtmp.GetServiceMethod()
-		m.Id = fmt.Sprintf("%d", rtmp.GetSeq())
-		m.Error = rtmp.GetError()
-	case codec.Event:
-		_, err := io.Copy(c.buf, c.rwc)
-		return err
-	default:
-		return fmt.Errorf("Unrecognised message type: %v", mt)
-	}
-	return nil
-}
-
-func (c *protoCodec) ReadBody(b interface{}) error {
-	var data []byte
-	switch c.mt {
-	case codec.Request, codec.Response:
-		var err error
-		data, err = ReadNetString(c.rwc)
-		if err != nil {
-			return err
-		}
-	case codec.Event:
-		data = c.buf.Bytes()
-	default:
-		return fmt.Errorf("Unrecognised message type: %v", c.mt)
-	}
-	if b != nil {
-		return proto.Unmarshal(data, b.(proto.Message))
-	}
-	return nil
-}
-
-func NewCodec(rwc io.ReadWriteCloser) codec.Codec {
-	return &protoCodec{
-		buf: bytes.NewBuffer(nil),
-		rwc: rwc,
-	}
-}

codec/text/text.go

@@ -1,80 +0,0 @@
-// Package text reads any text/* content-type
-package text
-
-import (
-	"fmt"
-	"io"
-	"io/ioutil"
-
-	"github.com/unistack-org/micro/v3/codec"
-)
-
-type Codec struct {
-	Conn io.ReadWriteCloser
-}
-
-// Frame gives us the ability to define raw data to send over the pipes
-type Frame struct {
-	Data []byte
-}
-
-func (c *Codec) ReadHeader(m *codec.Message, t codec.MessageType) error {
-	return nil
-}
-
-func (c *Codec) ReadBody(b interface{}) error {
-	// read bytes
-	buf, err := ioutil.ReadAll(c.Conn)
-	if err != nil {
-		return err
-	}
-
-	switch v := b.(type) {
-	case *string:
-		*v = string(buf)
-	case *[]byte:
-		*v = buf
-	case *Frame:
-		v.Data = buf
-	default:
-		return fmt.Errorf("failed to read body: %v is not type of *[]byte", b)
-	}
-
-	return nil
-}
-
-func (c *Codec) Write(m *codec.Message, b interface{}) error {
-	var v []byte
-	switch ve := b.(type) {
-	case nil:
-		return nil
-	case *Frame:
-		v = ve.Data
-	case *[]byte:
-		v = *ve
-	case *string:
-		v = []byte(*ve)
-	case string:
-		v = []byte(ve)
-	case []byte:
-		v = ve
-	default:
-		return fmt.Errorf("failed to write: %v is not type of *[]byte or []byte", b)
-	}
-	_, err := c.Conn.Write(v)
-	return err
-}
-
-func (c *Codec) Close() error {
-	return c.Conn.Close()
-}
-
-func (c *Codec) String() string {
-	return "text"
-}
-
-func NewCodec(c io.ReadWriteCloser) codec.Codec {
-	return &Codec{
-		Conn: c,
-	}
-}

debug/log/memory/memory.go

@@ -5,6 +5,7 @@ import (
 	"fmt"
 
 	"github.com/unistack-org/micro/v3/debug/log"
+	"github.com/unistack-org/micro/v3/metadata"
 	"github.com/unistack-org/micro/v3/util/ring"
 )
 
@@ -94,7 +95,7 @@ func (l *memoryLog) Stream() (log.Stream, error) {
 			records <- log.Record{
 				Timestamp: entry.Timestamp,
 				Message:   entry.Value,
-				Metadata:  make(map[string]string),
+				Metadata:  metadata.New(0),
 			}
 		}
 		// now stream continuously
@@ -102,7 +103,7 @@ func (l *memoryLog) Stream() (log.Stream, error) {
 			records <- log.Record{
 				Timestamp: entry.Timestamp,
 				Message:   entry.Value,
-				Metadata:  make(map[string]string),
+				Metadata:  metadata.New(0),
 			}
 		}
 	}()

debug/profile/profile.go

@@ -11,20 +11,20 @@ type Profile interface {
 }
 
 var (
-	DefaultProfile Profile = new(noop)
+	DefaultProfile Profile = &NoopProfile{}
 )
 
-type noop struct{}
+type NoopProfile struct{}
 
-func (p *noop) Start() error {
+func (p *NoopProfile) Start() error {
 	return nil
 }
 
-func (p *noop) Stop() error {
+func (p *NoopProfile) Stop() error {
 	return nil
 }
 
-func (p *noop) String() string {
+func (p *NoopProfile) String() string {
 	return "noop"
 }
 

debug/trace/memory/memory.go

@@ -1,90 +0,0 @@
-package memory
-
-import (
-	"context"
-	"time"
-
-	"github.com/google/uuid"
-	"github.com/unistack-org/micro/v3/debug/trace"
-	"github.com/unistack-org/micro/v3/util/ring"
-)
-
-type Tracer struct {
-	opts trace.Options
-
-	// ring buffer of traces
-	buffer *ring.Buffer
-}
-
-func (t *Tracer) Read(opts ...trace.ReadOption) ([]*trace.Span, error) {
-	var options trace.ReadOptions
-	for _, o := range opts {
-		o(&options)
-	}
-
-	sp := t.buffer.Get(t.buffer.Size())
-
-	spans := make([]*trace.Span, 0, len(sp))
-
-	for _, span := range sp {
-		val := span.Value.(*trace.Span)
-		// skip if trace id is specified and doesn't match
-		if len(options.Trace) > 0 && val.Trace != options.Trace {
-			continue
-		}
-		spans = append(spans, val)
-	}
-
-	return spans, nil
-}
-
-func (t *Tracer) Start(ctx context.Context, name string) (context.Context, *trace.Span) {
-	span := &trace.Span{
-		Name:     name,
-		Trace:    uuid.New().String(),
-		Id:       uuid.New().String(),
-		Started:  time.Now(),
-		Metadata: make(map[string]string),
-	}
-
-	// return span if no context
-	if ctx == nil {
-		return trace.ToContext(context.Background(), span.Trace, span.Id), span
-	}
-	traceID, parentSpanID, ok := trace.FromContext(ctx)
-	// If the trace can not be found in the header,
-	// that means this is where the trace is created.
-	if !ok {
-		return trace.ToContext(ctx, span.Trace, span.Id), span
-	}
-
-	// set trace id
-	span.Trace = traceID
-	// set parent
-	span.Parent = parentSpanID
-
-	// return the span
-	return trace.ToContext(ctx, span.Trace, span.Id), span
-}
-
-func (t *Tracer) Finish(s *trace.Span) error {
-	// set finished time
-	s.Duration = time.Since(s.Started)
-	// save the span
-	t.buffer.Put(s)
-
-	return nil
-}
-
-func NewTracer(opts ...trace.Option) trace.Tracer {
-	var options trace.Options
-	for _, o := range opts {
-		o(&options)
-	}
-
-	return &Tracer{
-		opts: options,
-		// the last 256 requests
-		buffer: ring.New(256),
-	}
-}

debug/trace/trace.go

@@ -1,99 +0,0 @@
-// Package trace provides an interface for distributed tracing
-package trace
-
-import (
-	"context"
-	"time"
-
-	"github.com/unistack-org/micro/v3/metadata"
-)
-
-// Tracer is an interface for distributed tracing
-type Tracer interface {
-	// Start a trace
-	Start(ctx context.Context, name string) (context.Context, *Span)
-	// Finish the trace
-	Finish(*Span) error
-	// Read the traces
-	Read(...ReadOption) ([]*Span, error)
-}
-
-// SpanType describe the nature of the trace span
-type SpanType int
-
-const (
-	// SpanTypeRequestInbound is a span created when serving a request
-	SpanTypeRequestInbound SpanType = iota
-	// SpanTypeRequestOutbound is a span created when making a service call
-	SpanTypeRequestOutbound
-)
-
-// Span is used to record an entry
-type Span struct {
-	// Id of the trace
-	Trace string
-	// name of the span
-	Name string
-	// id of the span
-	Id string
-	// parent span id
-	Parent string
-	// Start time
-	Started time.Time
-	// Duration in nano seconds
-	Duration time.Duration
-	// associated data
-	Metadata map[string]string
-	// Type
-	Type SpanType
-}
-
-const (
-	traceIDKey = "Micro-Trace-Id"
-	spanIDKey  = "Micro-Span-Id"
-)
-
-// FromContext returns a span from context
-func FromContext(ctx context.Context) (traceID string, parentSpanID string, isFound bool) {
-	traceID, traceOk := metadata.Get(ctx, traceIDKey)
-	microID, microOk := metadata.Get(ctx, "Micro-Id")
-	if !traceOk && !microOk {
-		isFound = false
-		return
-	}
-	if !traceOk {
-		traceID = microID
-	}
-	parentSpanID, ok := metadata.Get(ctx, spanIDKey)
-	return traceID, parentSpanID, ok
-}
-
-// ToContext saves the trace and span ids in the context
-func ToContext(ctx context.Context, traceID, parentSpanID string) context.Context {
-	return metadata.MergeContext(ctx, map[string]string{
-		traceIDKey: traceID,
-		spanIDKey:  parentSpanID,
-	}, true)
-}
-
-var (
-	DefaultTracer Tracer = new(noop)
-)
-
-type noop struct{}
-
-func (n *noop) Init(...Option) error {
-	return nil
-}
-
-func (n *noop) Start(ctx context.Context, name string) (context.Context, *Span) {
-	return nil, nil
-}
-
-func (n *noop) Finish(*Span) error {
-	return nil
-}
-
-func (n *noop) Read(...ReadOption) ([]*Span, error) {
-	return nil, nil
-}

errors/errors.go

@@ -8,6 +8,22 @@ import (
 	"net/http"
 )
 
+var (
+	ErrBadRequest          = &Error{Code: 400}
+	ErrUnauthorized        = &Error{Code: 401}
+	ErrForbidden           = &Error{Code: 403}
+	ErrNotFound            = &Error{Code: 404}
+	ErrMethodNotAllowed    = &Error{Code: 405}
+	ErrTimeout             = &Error{Code: 408}
+	ErrConflict            = &Error{Code: 409}
+	ErrInternalServerError = &Error{Code: 500}
+	ErNotImplemented       = &Error{Code: 501}
+	ErrBadGateway          = &Error{Code: 502}
+	ErrServiceUnavailable  = &Error{Code: 503}
+	ErrGatewayTimeout      = &Error{Code: 504}
+)
+
+// Error tpye
 type Error struct {
 	Id     string
 	Code   int32

events/events.go

@@ -2,6 +2,7 @@
 package events
 
 import (
+	"context"
 	"encoding/json"
 	"errors"
 	"time"
@@ -16,14 +17,14 @@ var (
 
 // Stream of events
 type Stream interface {
-	Publish(topic string, msg interface{}, opts ...PublishOption) error
+	Publish(ctx context.Context, topic string, msg interface{}, opts ...PublishOption) error
-	Subscribe(topic string, opts ...SubscribeOption) (<-chan Event, error)
+	Subscribe(ctx context.Context, topic string, opts ...SubscribeOption) (<-chan Event, error)
 }
 
 // Store of events
 type Store interface {
-	Read(opts ...ReadOption) ([]*Event, error)
+	Read(ctx context.Context, opts ...ReadOption) ([]*Event, error)
-	Write(event *Event, opts ...WriteOption) error
+	Write(ctx context.Context, event *Event, opts ...WriteOption) error
 }
 
 // Event is the object returned by the broker when you subscribe to a topic

function_test.go

@@ -8,14 +8,13 @@ import (
 	"testing"
 
 	rmemory "github.com/unistack-org/micro-registry-memory"
-	"github.com/unistack-org/micro/v3/util/test"
 )
 
 func TestFunction(t *testing.T) {
 	var wg sync.WaitGroup
 	wg.Add(1)
 
-	r := rmemory.NewRegistry(rmemory.Services(test.Data))
+	r := rmemory.NewRegistry()
 
 	// create service
 	fn := NewFunction(

go.mod

@@ -1,33 +1,33 @@
 module github.com/unistack-org/micro/v3
 
-go 1.15
+go 1.14
 
 require (
 	github.com/BurntSushi/toml v0.3.1
 	github.com/caddyserver/certmagic v0.10.6
-	github.com/cpuguy83/go-md2man/v2 v2.0.0 // indirect
 	github.com/dgrijalva/jwt-go v3.2.0+incompatible
 	github.com/ef-ds/deque v1.0.4-0.20190904040645-54cb57c252a1
-	github.com/evanphx/json-patch/v5 v5.0.0
+	github.com/evanphx/json-patch/v5 v5.1.0
 	github.com/ghodss/yaml v1.0.0
 	github.com/go-acme/lego/v3 v3.4.0
 	github.com/gobwas/httphead v0.0.0-20180130184737-2c6c146eadee
 	github.com/gobwas/ws v1.0.3
-	github.com/golang/protobuf v1.4.2
+	github.com/golang/protobuf v1.4.3
-	github.com/google/uuid v1.1.1
+	github.com/google/uuid v1.1.2
 	github.com/hashicorp/hcl v1.0.0
-	github.com/kr/text v0.2.0 // indirect
 	github.com/micro/cli/v2 v2.1.2
-	github.com/miekg/dns v1.1.27
+	github.com/miekg/dns v1.1.31
-	github.com/niemeyer/pretty v0.0.0-20200227124842-a10e7caefd8e // indirect
 	github.com/oxtoacart/bpool v0.0.0-20190530202638-03653db5a59c
 	github.com/patrickmn/go-cache v2.1.0+incompatible
 	github.com/stretchr/testify v1.5.1
-	github.com/unistack-org/micro-codec-bytes v0.0.0-20200827104921-3616a69473a6
+	github.com/unistack-org/micro-codec-bytes v0.0.0-20200828083432-4e49e953d844
-	github.com/unistack-org/micro-config-cmd v0.0.0-20200828075439-d859b9d7265b
+	github.com/unistack-org/micro-codec-json v0.0.0-20201102222734-a29c895ec05c
-	golang.org/x/crypto v0.0.0-20200709230013-948cd5f35899
+	github.com/unistack-org/micro-codec-jsonrpc v0.0.0-20201102222451-ff6a69988bcd
-	golang.org/x/net v0.0.0-20200707034311-ab3426394381
+	github.com/unistack-org/micro-codec-proto v0.0.0-20201102222202-769c2d6a4b92
-	google.golang.org/genproto v0.0.0-20200526211855-cb27e3aa2013
+	github.com/unistack-org/micro-codec-protorpc v0.0.0-20201102222610-3a343898c077
+	github.com/unistack-org/micro-config-cmd v0.0.0-20201028144621-5a55f1aad70a
+	golang.org/x/crypto v0.0.0-20200820211705-5c72a883971a
+	golang.org/x/net v0.0.0-20200904194848-62affa334b73
+	google.golang.org/genproto v0.0.0-20200904004341-0bd0a958aa1d
 	google.golang.org/protobuf v1.25.0
-	gopkg.in/check.v1 v1.0.0-20200227125254-8fa46927fb4f // indirect
 )

go.sum

@@ -75,6 +75,8 @@ github.com/envoyproxy/go-control-plane v0.9.1-0.20191026205805-5f8ba28d4473/go.m
 github.com/envoyproxy/protoc-gen-validate v0.1.0/go.mod h1:iSmxcyjqTsJpI2R4NaDN7+kN2VEUnK/pcBlmesArF7c=
 github.com/evanphx/json-patch/v5 v5.0.0 h1:dKTrUeykyQwKb/kx7Z+4ukDs6l+4L41HqG1XHnhX7WE=
 github.com/evanphx/json-patch/v5 v5.0.0/go.mod h1:G79N1coSVB93tBe7j6PhzjmR3/2VvlbKOFpnXhI9Bw4=
+github.com/evanphx/json-patch/v5 v5.1.0 h1:B0aXl1o/1cP8NbviYiBMkcHBtUjIJ1/Ccg6b+SwCLQg=
+github.com/evanphx/json-patch/v5 v5.1.0/go.mod h1:G79N1coSVB93tBe7j6PhzjmR3/2VvlbKOFpnXhI9Bw4=
 github.com/exoscale/egoscale v0.18.1/go.mod h1:Z7OOdzzTOz1Q1PjQXumlz9Wn/CddH0zSYdCF3rnBKXE=
 github.com/fatih/structs v1.1.0/go.mod h1:9NiDSp5zOcgEDl+j00MP/WkGVPOlPRLejGD8Ga6PJ7M=
 github.com/fsnotify/fsnotify v1.4.7 h1:IXs+QLmnXW2CcXuY+8Mzv/fWEsPGWxqefPtCP5CnV9I=
@@ -119,6 +121,8 @@ github.com/golang/protobuf v1.4.0/go.mod h1:jodUvKwWbYaEsadDk5Fwe5c77LiNKVO9IDvq
 github.com/golang/protobuf v1.4.1/go.mod h1:U8fpvMrcmy5pZrNK1lt4xCsGvpyWQ/VVv6QDs8UjoX8=
 github.com/golang/protobuf v1.4.2 h1:+Z5KGCizgyZCbGh1KZqA0fcLLkwbsjIzS4aV2v7wJX0=
 github.com/golang/protobuf v1.4.2/go.mod h1:oDoupMAO8OvCJWAcko0GGGIgR6R6ocIYbsSw735rRwI=
+github.com/golang/protobuf v1.4.3 h1:JjCZWpVbqXDqFVmTfYWEVTMIYrL/NPdPSCHPJ0T/raM=
+github.com/golang/protobuf v1.4.3/go.mod h1:oDoupMAO8OvCJWAcko0GGGIgR6R6ocIYbsSw735rRwI=
 github.com/golang/snappy v0.0.0-20180518054509-2e65f85255db/go.mod h1:/XxbfmMg8lxefKM7IXC3fBNl/7bRcc72aCRzEWrmP2Q=
 github.com/google/btree v0.0.0-20180813153112-4030bb1f1f0c/go.mod h1:lNA+9X1NB3Zf8V7Ke586lFgjr2dZNuvo3lPJSGZ5JPQ=
 github.com/google/btree v1.0.0 h1:0udJVsspx3VBr5FwtLhQQtuAsVc79tTq0ocGIPAU6qo=
@@ -139,6 +143,8 @@ github.com/google/pprof v0.0.0-20190515194954-54271f7e092f/go.mod h1:zfwlbNMJ+OI
 github.com/google/renameio v0.1.0/go.mod h1:KWCgfxg9yswjAJkECMjeO8J8rahYeXnNhOm40UhjYkI=
 github.com/google/uuid v1.1.1 h1:Gkbcsh/GbpXz7lPftLA3P6TYMwjCLYm83jiFQZF/3gY=
 github.com/google/uuid v1.1.1/go.mod h1:TIyPZe4MgqvfeYDBFedMoGGpEw/LqOeaOT+nhxU+yHo=
+github.com/google/uuid v1.1.2 h1:EVhdT+1Kseyi1/pUmXKaFxYsDNy9RQYkMWRH68J/W7Y=
+github.com/google/uuid v1.1.2/go.mod h1:TIyPZe4MgqvfeYDBFedMoGGpEw/LqOeaOT+nhxU+yHo=
 github.com/googleapis/gax-go/v2 v2.0.4/go.mod h1:0Wqv26UfaUD9n4G6kQubkQ+KchISgw+vpHVxEJEs9eg=
 github.com/googleapis/gax-go/v2 v2.0.5/go.mod h1:DWXyrwAJ9X0FpwwEdw+IPEYBICEFu5mhpdKc/us6bOk=
 github.com/gophercloud/gophercloud v0.3.0/go.mod h1:vxM41WHh5uqHVBMZHzuwNOHh8XEoIEcSTewFxm1c5g8=
@@ -197,6 +203,8 @@ github.com/micro/cli/v2 v2.1.2/go.mod h1:EguNh6DAoWKm9nmk+k/Rg0H3lQnDxqzu5x5srOt
 github.com/miekg/dns v1.1.15/go.mod h1:W1PPwlIAgtquWBMBEV9nkV9Cazfe8ScdGz/Lj7v3Nrg=
 github.com/miekg/dns v1.1.27 h1:aEH/kqUzUxGJ/UHcEKdJY+ugH6WEzsEBBSPa8zuy1aM=
 github.com/miekg/dns v1.1.27/go.mod h1:KNUDUusw/aVsxyTYZM1oqvCicbwhgbNgztCETuNZ7xM=
+github.com/miekg/dns v1.1.31 h1:sJFOl9BgwbYAWOGEwr61FU28pqsBNdpRBnhGXtO06Oo=
+github.com/miekg/dns v1.1.31/go.mod h1:KNUDUusw/aVsxyTYZM1oqvCicbwhgbNgztCETuNZ7xM=
 github.com/mitchellh/go-homedir v1.1.0 h1:lukF9ziXFxDFPkA1vsr5zpc1XuPDn/wFntq5mG+4E0Y=
 github.com/mitchellh/go-homedir v1.1.0/go.mod h1:SfyaCUpYCn1Vlf4IUYiD9fPX4A5wJrkLzIz1N1q0pr0=
 github.com/mitchellh/go-vnc v0.0.0-20150629162542-723ed9867aed/go.mod h1:3rdaFaCv4AyBgu5ALFM0+tSuHrBh6v692nyQe3ikrq0=
@@ -275,11 +283,31 @@ github.com/stretchr/testify v1.5.1/go.mod h1:5W2xD1RspED5o8YsWQXVCued0rvSQ+mT+I5
 github.com/timewasted/linode v0.0.0-20160829202747-37e84520dcf7/go.mod h1:imsgLplxEC/etjIhdr3dNzV3JeT27LbVu5pYWm0JCBY=
 github.com/transip/gotransip v0.0.0-20190812104329-6d8d9179b66f/go.mod h1:i0f4R4o2HM0m3DZYQWsj6/MEowD57VzoH0v3d7igeFY=
 github.com/uber-go/atomic v1.3.2/go.mod h1:/Ct5t2lcmbJ4OSe/waGBoaVvVqtO0bmtfVNex1PFV8g=
-github.com/unistack-org/micro-codec-bytes v0.0.0-20200827104921-3616a69473a6 h1:bBPX47ly/xhLhuCMIvybXKevCOCZCmxzvDwR61zu3cQ=
 github.com/unistack-org/micro-codec-bytes v0.0.0-20200827104921-3616a69473a6/go.mod h1:g5sOI8TWgGZiVHe8zoUPdtz7+0oLnqTnfBoai6Qb7jE=
-github.com/unistack-org/micro-config-cmd v0.0.0-20200828075439-d859b9d7265b h1:v5Ak+Sr780jZclFDnx82g5biF0N5HRVKphEpJhbnVUs=
+github.com/unistack-org/micro-codec-bytes v0.0.0-20200828083432-4e49e953d844 h1:5b1yuSllbsMm/9fUIlIXSr8DbsKT/sAKSCgOx6+SAfI=
+github.com/unistack-org/micro-codec-bytes v0.0.0-20200828083432-4e49e953d844/go.mod h1:g5sOI8TWgGZiVHe8zoUPdtz7+0oLnqTnfBoai6Qb7jE=
+github.com/unistack-org/micro-codec-json v0.0.0-20201102222734-a29c895ec05c h1:RtcNaK8rQSl7xAoy1W437dvZLCVjSC6e4JcolepSQs0=
+github.com/unistack-org/micro-codec-json v0.0.0-20201102222734-a29c895ec05c/go.mod h1:dG5aUyhBv+ebOl/UFW2Aj2GTfVxxXWi6AcynpePOAhQ=
+github.com/unistack-org/micro-codec-jsonrpc v0.0.0-20201102222451-ff6a69988bcd h1:qXSiEfVnCgrwTHYvAnEPSHEai3+5EUH9ZYovLpxGDwg=
+github.com/unistack-org/micro-codec-jsonrpc v0.0.0-20201102222451-ff6a69988bcd/go.mod h1:PFyvkGhavl+3tEPgOaLAhoJJX4/webVGW59BSOXDfNM=
+github.com/unistack-org/micro-codec-proto v0.0.0-20201102222202-769c2d6a4b92 h1:1rPDBu7Nwo3ZL6r6H5rj7qNchHSdBF4zcewAeTUEMC4=
+github.com/unistack-org/micro-codec-proto v0.0.0-20201102222202-769c2d6a4b92/go.mod h1:31JMo683bBQ+uN9YufpUU6ESHphyx3DFmTXEnjpJV9Y=
+github.com/unistack-org/micro-codec-protorpc v0.0.0-20201102222610-3a343898c077 h1:uK7owL8TPSwoQiDM1V/0swmgCEepSQKXoi8GEnGxtlU=
+github.com/unistack-org/micro-codec-protorpc v0.0.0-20201102222610-3a343898c077/go.mod h1:Ct4uAVZaDEyBZj9Q0poDkbzu6zKXUCcSqJkv/MWPpeI=
 github.com/unistack-org/micro-config-cmd v0.0.0-20200828075439-d859b9d7265b/go.mod h1:6pm1cadbwsFcEW1ZbV5Fp0i3goR3TNfROMNSPih3I8k=
+github.com/unistack-org/micro-config-cmd v0.0.0-20200909210346-ec89783dc46c h1:GbcjxyOyA9tnNoe4FcnzzLDa8JwEBnQKN/7Bhd8t47I=
+github.com/unistack-org/micro-config-cmd v0.0.0-20200909210346-ec89783dc46c/go.mod h1:6pm1cadbwsFcEW1ZbV5Fp0i3goR3TNfROMNSPih3I8k=
+github.com/unistack-org/micro-config-cmd v0.0.0-20200909210755-6e7e85eeab34 h1:VHc98t4SoiCF/jbkFu2e/j+IyJ/+MFQ1T+INNL7LubU=
+github.com/unistack-org/micro-config-cmd v0.0.0-20200909210755-6e7e85eeab34/go.mod h1:fT1gYn+TtfVZZ5tNx56bZIncJjmlji66g7GKdWua5hE=
+github.com/unistack-org/micro-config-cmd v0.0.0-20200920140133-0853deb2e5dc h1:hHAU3rgeiA0LaudfNdMLf9/jkOBeFxvJdnwXevviZF8=
+github.com/unistack-org/micro-config-cmd v0.0.0-20200920140133-0853deb2e5dc/go.mod h1:il8nz4ZEcX3Usyfrtwy+YtQcb7xSUSFJdSe8PBJ9gOA=
+github.com/unistack-org/micro-config-cmd v0.0.0-20201028144621-5a55f1aad70a h1:VjlqP1qZkjC0Chmx5MKFPIbtSCigeICFDf8vaLZGh9o=
+github.com/unistack-org/micro-config-cmd v0.0.0-20201028144621-5a55f1aad70a/go.mod h1:MzMg+qh1wORZwYtg5AVgFkNFrXVVbdPKW7s/Is+A994=
 github.com/unistack-org/micro/v3 v3.0.0-20200827083227-aa99378adc6e/go.mod h1:rPQbnry3nboAnMczj8B1Gzlcyv/HYoMZLgd3/3nttJ4=
+github.com/unistack-org/micro/v3 v3.0.0-gamma/go.mod h1:iEtpu3wTYCRs3pQ3VsFEO7JBO4lOMpkOwMyrpZyIDPo=
+github.com/unistack-org/micro/v3 v3.0.0-gamma.0.20200909210629-caec730248b1/go.mod h1:mmqHR9WelHUXqg2mELjsQ+FJHcWs6mNmXg+wEYO2T3c=
+github.com/unistack-org/micro/v3 v3.0.0-gamma.0.20200920135754-1cbd1d2bad83/go.mod h1:HUzMG4Mcy97958VxWTg8zuazZgwQ/aoLZ8wtBVONwRE=
+github.com/unistack-org/micro/v3 v3.0.0-gamma.0.20200922103357-4c4fa00a5d94/go.mod h1:aL+8VhSXpx0SuEeXPOWUo5BgS7kyvWYobeXFay90UUM=
 github.com/urfave/cli v1.22.1/go.mod h1:Gos4lmkARVdJ6EkW0WaNv/tZAAMe9V7XWyB60NtXRu0=
 github.com/vultr/govultr v0.1.4/go.mod h1:9H008Uxr/C4vFNGLqKx232C206GL0PBHzOP0809bGNA=
 github.com/xeipuuv/gojsonpointer v0.0.0-20180127040702-4e3ac2762d5f/go.mod h1:N2zxlSyiKSe5eX1tZViRH5QA0qijqEDrYZiPEAiq3wU=
@@ -303,6 +331,8 @@ golang.org/x/crypto v0.0.0-20200302210943-78000ba7a073/go.mod h1:LzIPMQfyMNhhGPh
 golang.org/x/crypto v0.0.0-20200622213623-75b288015ac9/go.mod h1:LzIPMQfyMNhhGPhUkYOs5KpL4U8rLKemX1yGLhDgUto=
 golang.org/x/crypto v0.0.0-20200709230013-948cd5f35899 h1:DZhuSZLsGlFL4CmhA8BcRA0mnthyA/nZ00AqCUo7vHg=
 golang.org/x/crypto v0.0.0-20200709230013-948cd5f35899/go.mod h1:LzIPMQfyMNhhGPhUkYOs5KpL4U8rLKemX1yGLhDgUto=
+golang.org/x/crypto v0.0.0-20200820211705-5c72a883971a h1:vclmkQCjlDX5OydZ9wv8rBCcS0QyQY66Mpf/7BZbInM=
+golang.org/x/crypto v0.0.0-20200820211705-5c72a883971a/go.mod h1:LzIPMQfyMNhhGPhUkYOs5KpL4U8rLKemX1yGLhDgUto=
 golang.org/x/exp v0.0.0-20190121172915-509febef88a4/go.mod h1:CJ0aWSM057203Lf6IL+f9T1iT9GByDxfZKAQTCR3kQA=
 golang.org/x/exp v0.0.0-20190306152737-a1d7652674e8/go.mod h1:CJ0aWSM057203Lf6IL+f9T1iT9GByDxfZKAQTCR3kQA=
 golang.org/x/exp v0.0.0-20190510132918-efd6b22b2522/go.mod h1:ZjyILWgesfNpC6sMxTJOJm9Kp84zZh5NQWvqDGG3Qr8=
@@ -345,6 +375,8 @@ golang.org/x/net v0.0.0-20190930134127-c5a3c61f89f3/go.mod h1:z5CRVTTTmAJ677TzLL
 golang.org/x/net v0.0.0-20191027093000-83d349e8ac1a/go.mod h1:z5CRVTTTmAJ677TzLLGU+0bjPO0LkuOLi4/5GtJWs/s=
 golang.org/x/net v0.0.0-20200707034311-ab3426394381 h1:VXak5I6aEWmAXeQjA+QSZzlgNrpq9mjcfDemuexIKsU=
 golang.org/x/net v0.0.0-20200707034311-ab3426394381/go.mod h1:/O7V0waA8r7cgGh81Ro3o1hOxt32SMVPicZroKQ2sZA=
+golang.org/x/net v0.0.0-20200904194848-62affa334b73 h1:MXfv8rhZWmFeqX3GNZRsd6vOLoaCHjYEX3qkRo3YBUA=
+golang.org/x/net v0.0.0-20200904194848-62affa334b73/go.mod h1:/O7V0waA8r7cgGh81Ro3o1hOxt32SMVPicZroKQ2sZA=
 golang.org/x/oauth2 v0.0.0-20180821212333-d2e6202438be/go.mod h1:N/0e6XlmueqKjAGxoOufVs8QHGRruUQn6yWY3a++T0U=
 golang.org/x/oauth2 v0.0.0-20190226205417-e64efc72b421/go.mod h1:gOpvHmFTYa4IltrdGE7lF6nIHvwfUNPOp7c8zoXwtLw=
 golang.org/x/oauth2 v0.0.0-20190604053449-0f29369cfe45 h1:SVwTIAaPC2U/AvvLNZ2a7OVsmBpC8L5BlwK1whH3hm0=
@@ -405,6 +437,7 @@ golang.org/x/tools v0.0.0-20190911174233-4f2ddba30aff/go.mod h1:b+2E5dAYhXwXZwtn
 golang.org/x/tools v0.0.0-20191012152004-8de300cfc20a/go.mod h1:b+2E5dAYhXwXZwtnZ6UAqBI28+e2cm9otk0dWdXHAEo=
 golang.org/x/tools v0.0.0-20191125144606-a911d9008d1f/go.mod h1:b+2E5dAYhXwXZwtnZ6UAqBI28+e2cm9otk0dWdXHAEo=
 golang.org/x/tools v0.0.0-20191216052735-49a3e744a425/go.mod h1:TB2adYChydJhpapKDTa4BR/hXlZSLoq2Wpct/0txZ28=
+golang.org/x/tools v0.0.0-20191216173652-a0e659d51361 h1:RIIXAeV6GvDBuADKumTODatUqANFZ+5BPMnzsy4hulY=
 golang.org/x/tools v0.0.0-20191216173652-a0e659d51361/go.mod h1:TB2adYChydJhpapKDTa4BR/hXlZSLoq2Wpct/0txZ28=
 golang.org/x/xerrors v0.0.0-20190717185122-a985d3407aa7/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
 golang.org/x/xerrors v0.0.0-20191011141410-1b5146add898/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
@@ -432,6 +465,8 @@ google.golang.org/genproto v0.0.0-20190911173649-1774047e7e51/go.mod h1:IbNlFCBr
 google.golang.org/genproto v0.0.0-20191216164720-4f79533eabd1/go.mod h1:n3cpQtvxv34hfy77yVDNjmbRyujviMdxYliBSkLhpCc=
 google.golang.org/genproto v0.0.0-20200526211855-cb27e3aa2013 h1:+kGHl1aib/qcwaRi1CbqBZ1rk19r85MNUf8HaBghugY=
 google.golang.org/genproto v0.0.0-20200526211855-cb27e3aa2013/go.mod h1:NbSheEEYHJ7i3ixzK3sjbqSGDJWnxyFXZblF3eUsNvo=
+google.golang.org/genproto v0.0.0-20200904004341-0bd0a958aa1d h1:92D1fum1bJLKSdr11OJ+54YeCMCGYIygTA7R/YZxH5M=
+google.golang.org/genproto v0.0.0-20200904004341-0bd0a958aa1d/go.mod h1:FWY/as6DDZQgahTzZj3fqbO1CbirC29ZNUFHwi0/+no=
 google.golang.org/grpc v1.17.0/go.mod h1:6QZJwpn2B+Zp71q/5VxRsJ6NXXVCE5NRUHRo+f3cWCs=
 google.golang.org/grpc v1.19.0/go.mod h1:mqu4LbDTu4XGKhr4mRzUsmM4RtVoemTSY81AxZiDr8c=
 google.golang.org/grpc v1.19.1/go.mod h1:mqu4LbDTu4XGKhr4mRzUsmM4RtVoemTSY81AxZiDr8c=
@@ -448,6 +483,7 @@ google.golang.org/protobuf v1.21.0/go.mod h1:47Nbq4nVaFHyn7ilMalzfO3qCViNmqZ2kzi
 google.golang.org/protobuf v1.22.0/go.mod h1:EGpADcykh3NcUnDUJcl1+ZksZNG86OlYog2l/sGQquU=
 google.golang.org/protobuf v1.23.0/go.mod h1:EGpADcykh3NcUnDUJcl1+ZksZNG86OlYog2l/sGQquU=
 google.golang.org/protobuf v1.23.1-0.20200526195155-81db48ad09cc/go.mod h1:EGpADcykh3NcUnDUJcl1+ZksZNG86OlYog2l/sGQquU=
+google.golang.org/protobuf v1.24.0/go.mod h1:r/3tXBNzIEhYS9I1OUVjXDlt8tc493IdKGjtUeSXeh4=
 google.golang.org/protobuf v1.25.0 h1:Ejskq+SyPohKW+1uil0JJMtmHCgJPJ/qWTxr8qp+R4c=
 google.golang.org/protobuf v1.25.0/go.mod h1:9JNX74DMeImyA3h4bdi1ymwjUzf21/xIlbajtzgsN7c=
 gopkg.in/alecthomas/kingpin.v2 v2.2.6/go.mod h1:FMv+mEhP44yOT+4EoQTLFTRgOQ1FBLkstjWtayDeSgw=

logger/context.go

@@ -4,11 +4,13 @@ import "context"
 
 type loggerKey struct{}
 
+// FromContext returns logger from passed context
 func FromContext(ctx context.Context) (Logger, bool) {
 	l, ok := ctx.Value(loggerKey{}).(Logger)
 	return l, ok
 }
 
+// NewContext stores logger into passed context
 func NewContext(ctx context.Context, l Logger) context.Context {
 	return context.WithValue(ctx, loggerKey{}, l)
 }

logger/helper.go

@@ -1,114 +0,0 @@
-package logger
-
-import (
-	"os"
-)
-
-type Helper struct {
-	Logger
-	fields map[string]interface{}
-}
-
-func NewHelper(log Logger) *Helper {
-	return &Helper{Logger: log}
-}
-
-func (h *Helper) Info(args ...interface{}) {
-	if !h.Logger.Options().Level.Enabled(InfoLevel) {
-		return
-	}
-	h.Logger.Fields(h.fields).Log(InfoLevel, args...)
-}
-
-func (h *Helper) Infof(template string, args ...interface{}) {
-	if !h.Logger.Options().Level.Enabled(InfoLevel) {
-		return
-	}
-	h.Logger.Fields(h.fields).Logf(InfoLevel, template, args...)
-}
-
-func (h *Helper) Trace(args ...interface{}) {
-	if !h.Logger.Options().Level.Enabled(TraceLevel) {
-		return
-	}
-	h.Logger.Fields(h.fields).Log(TraceLevel, args...)
-}
-
-func (h *Helper) Tracef(template string, args ...interface{}) {
-	if !h.Logger.Options().Level.Enabled(TraceLevel) {
-		return
-	}
-	h.Logger.Fields(h.fields).Logf(TraceLevel, template, args...)
-}
-
-func (h *Helper) Debug(args ...interface{}) {
-	if !h.Logger.Options().Level.Enabled(DebugLevel) {
-		return
-	}
-	h.Logger.Fields(h.fields).Log(DebugLevel, args...)
-}
-
-func (h *Helper) Debugf(template string, args ...interface{}) {
-	if !h.Logger.Options().Level.Enabled(DebugLevel) {
-		return
-	}
-	h.Logger.Fields(h.fields).Logf(DebugLevel, template, args...)
-}
-
-func (h *Helper) Warn(args ...interface{}) {
-	if !h.Logger.Options().Level.Enabled(WarnLevel) {
-		return
-	}
-	h.Logger.Fields(h.fields).Log(WarnLevel, args...)
-}
-
-func (h *Helper) Warnf(template string, args ...interface{}) {
-	if !h.Logger.Options().Level.Enabled(WarnLevel) {
-		return
-	}
-	h.Logger.Fields(h.fields).Logf(WarnLevel, template, args...)
-}
-
-func (h *Helper) Error(args ...interface{}) {
-	if !h.Logger.Options().Level.Enabled(ErrorLevel) {
-		return
-	}
-	h.Logger.Fields(h.fields).Log(ErrorLevel, args...)
-}
-
-func (h *Helper) Errorf(template string, args ...interface{}) {
-	if !h.Logger.Options().Level.Enabled(ErrorLevel) {
-		return
-	}
-	h.Logger.Fields(h.fields).Logf(ErrorLevel, template, args...)
-}
-
-func (h *Helper) Fatal(args ...interface{}) {
-	if !h.Logger.Options().Level.Enabled(FatalLevel) {
-		return
-	}
-	h.Logger.Fields(h.fields).Log(FatalLevel, args...)
-	os.Exit(1)
-}
-
-func (h *Helper) Fatalf(template string, args ...interface{}) {
-	if !h.Logger.Options().Level.Enabled(FatalLevel) {
-		return
-	}
-	h.Logger.Fields(h.fields).Logf(FatalLevel, template, args...)
-	os.Exit(1)
-}
-
-func (h *Helper) WithError(err error) *Helper {
-	fields := copyFields(h.fields)
-	fields["error"] = err
-	return &Helper{Logger: h.Logger, fields: fields}
-}
-
-func (h *Helper) WithFields(fields map[string]interface{}) *Helper {
-	nfields := copyFields(fields)
-	for k, v := range h.fields {
-		nfields[k] = v
-	}
-	return &Helper{Logger: h.Logger, fields: nfields}
-}

logger/level.go

@@ -2,7 +2,6 @@ package logger
 
 import (
 	"fmt"
-	"os"
 )
 
 type Level int8
@@ -19,7 +18,7 @@ const (
 	WarnLevel
 	// ErrorLevel level. Logs. Used for errors that should definitely be noted.
 	ErrorLevel
-	// FatalLevel level. Logs and then calls `logger.Exit(1)`. highest level of severity.
+	// FatalLevel level. Logs and then calls `os.Exit(1)`. highest level of severity.
 	FatalLevel
 )
 
@@ -63,64 +62,5 @@ func GetLevel(levelStr string) (Level, error) {
 	case FatalLevel.String():
 		return FatalLevel, nil
 	}
-	return InfoLevel, fmt.Errorf("Unknown Level String: '%s', defaulting to InfoLevel", levelStr)
+	return InfoLevel, fmt.Errorf("unknown Level String: '%s', use InfoLevel", levelStr)
-}
-
-func Info(args ...interface{}) {
-	DefaultLogger.Log(InfoLevel, args...)
-}
-
-func Infof(template string, args ...interface{}) {
-	DefaultLogger.Logf(InfoLevel, template, args...)
-}
-
-func Trace(args ...interface{}) {
-	DefaultLogger.Log(TraceLevel, args...)
-}
-
-func Tracef(template string, args ...interface{}) {
-	DefaultLogger.Logf(TraceLevel, template, args...)
-}
-
-func Debug(args ...interface{}) {
-	DefaultLogger.Log(DebugLevel, args...)
-}
-
-func Debugf(template string, args ...interface{}) {
-	DefaultLogger.Logf(DebugLevel, template, args...)
-}
-
-func Warn(args ...interface{}) {
-	DefaultLogger.Log(WarnLevel, args...)
-}
-
-func Warnf(template string, args ...interface{}) {
-	DefaultLogger.Logf(WarnLevel, template, args...)
-}
-
-func Error(args ...interface{}) {
-	DefaultLogger.Log(ErrorLevel, args...)
-}
-
-func Errorf(template string, args ...interface{}) {
-	DefaultLogger.Logf(ErrorLevel, template, args...)
-}
-
-func Fatal(args ...interface{}) {
-	DefaultLogger.Log(FatalLevel, args...)
-	os.Exit(1)
-}
-
-func Fatalf(template string, args ...interface{}) {
-	DefaultLogger.Logf(FatalLevel, template, args...)
-	os.Exit(1)
-}
-
-// Returns true if the given level is at or lower the current logger level
-func V(lvl Level, log Logger) bool {
-	l := DefaultLogger
-	if log != nil {
-		l = log
-	}
-	return l.Options().Level <= lvl
 }

logger/logger.go

@@ -1,45 +1,107 @@
-// Package log provides a log interface
+// Package logger provides a log interface
 package logger
 
 var (
-	// Default logger
+	// DefaultLogger variable
-	DefaultLogger Logger = NewHelper(NewLogger())
+	DefaultLogger Logger = NewLogger()
 )
 
 // Logger is a generic logging interface
 type Logger interface {
 	// Init initialises options
-	Init(options ...Option) error
+	Init(opts ...Option) error
 	// V compare provided verbosity level with current log level
 	V(level Level) bool
 	// The Logger options
 	Options() Options
 	// Fields set fields to always be logged
 	Fields(fields map[string]interface{}) Logger
-	// Log writes a log entry
+	// Info level message
-	Log(level Level, v ...interface{})
+	Info(args ...interface{})
-	// Logf writes a formatted log entry
+	// Trace level message
-	Logf(level Level, format string, v ...interface{})
+	Trace(args ...interface{})
+	// Debug level message
+	Debug(args ...interface{})
+	// Warn level message
+	Warn(args ...interface{})
+	// Error level message
+	Error(args ...interface{})
+	// Fatal level message
+	Fatal(args ...interface{})
+	// Infof level message
+	Infof(msg string, args ...interface{})
+	// Tracef level message
+	Tracef(msg string, args ...interface{})
+	// Debug level message
+	Debugf(msg string, args ...interface{})
+	// Warn level message
+	Warnf(msg string, args ...interface{})
+	// Error level message
+	Errorf(msg string, args ...interface{})
+	// Fatal level message
+	Fatalf(msg string, args ...interface{})
 	// String returns the name of logger
 	String() string
 }
 
+func Info(args ...interface{}) {
+	DefaultLogger.Info(args...)
+}
+
+func Error(args ...interface{}) {
+	DefaultLogger.Error(args...)
+}
+
+func Debug(args ...interface{}) {
+	DefaultLogger.Debug(args...)
+}
+
+func Warn(args ...interface{}) {
+	DefaultLogger.Warn(args...)
+}
+
+func Trace(args ...interface{}) {
+	DefaultLogger.Trace(args...)
+}
+
+func Fatal(args ...interface{}) {
+	DefaultLogger.Fatal(args...)
+}
+
+func Infof(msg string, args ...interface{}) {
+	DefaultLogger.Infof(msg, args...)
+}
+
+func Errorf(msg string, args ...interface{}) {
+	DefaultLogger.Errorf(msg, args...)
+}
+
+func Debugf(msg string, args ...interface{}) {
+	DefaultLogger.Debugf(msg, args...)
+}
+
+func Warnf(msg string, args ...interface{}) {
+	DefaultLogger.Warnf(msg, args...)
+}
+
+func Tracef(msg string, args ...interface{}) {
+	DefaultLogger.Tracef(msg, args...)
+}
+
+func Fatalf(msg string, args ...interface{}) {
+	DefaultLogger.Fatalf(msg, args...)
+}
+
+func V(level Level) bool {
+	return DefaultLogger.V(level)
+}
+
+// Init initialize logger
 func Init(opts ...Option) error {
 	return DefaultLogger.Init(opts...)
 }
 
+// Fields create logger with specific fields
 func Fields(fields map[string]interface{}) Logger {
 	return DefaultLogger.Fields(fields)
 }
-
-func Log(level Level, v ...interface{}) {
-	DefaultLogger.Log(level, v...)
-}
-
-func Logf(level Level, format string, v ...interface{}) {
-	DefaultLogger.Logf(level, format, v...)
-}
-
-func String() string {
-	return DefaultLogger.String()
-}

logger/logger_test.go

@@ -6,13 +6,11 @@ import (
 
 func TestLogger(t *testing.T) {
 	l := NewLogger(WithLevel(TraceLevel))
-	h1 := NewHelper(l).WithFields(map[string]interface{}{"key1": "val1"})
+	if err := l.Init(); err != nil {
-	h1.Trace("trace_msg1")
+		t.Fatal(err)
-	h1.Warn("warn_msg1")
+	}
-
+	l.Trace("trace_msg1")
-	h2 := NewHelper(l).WithFields(map[string]interface{}{"key2": "val2"})
+	l.Warn("warn_msg1")
-	h2.Trace("trace_msg2")
+	l.Fields(map[string]interface{}{"error": "test"}).Info("error message")
-	h2.Warn("warn_msg2")
+	l.Warn("first", " ", "second")
-
-	l.Fields(map[string]interface{}{"key3": "val4"}).Log(InfoLevel, "test_msg")
 }

logger/micro.go

@@ -1,16 +1,13 @@
 package logger
 
 import (
-	"context"
+	"encoding/json"
 	"fmt"
 	"os"
 	"runtime"
-	"sort"
 	"strings"
 	"sync"
 	"time"
-
-	dlog "github.com/unistack-org/micro/v3/debug/log"
 )
 
 func init() {
@@ -19,31 +16,33 @@ func init() {
 		lvl = InfoLevel
 	}
 
-	DefaultLogger = NewHelper(NewLogger(WithLevel(lvl)))
+	DefaultLogger = NewLogger(WithLevel(lvl))
 }
 
 type defaultLogger struct {
 	sync.RWMutex
 	opts Options
+	enc  *json.Encoder
 }
 
 // Init(opts...) should only overwrite provided options
 func (l *defaultLogger) Init(opts ...Option) error {
+	l.Lock()
+	defer l.Unlock()
+
 	for _, o := range opts {
 		o(&l.opts)
 	}
+	l.enc = json.NewEncoder(l.opts.Out)
 	return nil
 }
 
 func (l *defaultLogger) String() string {
-	return "default"
+	return "micro"
 }
 
 func (l *defaultLogger) V(level Level) bool {
-	if l.opts.Level.Enabled(level) {
+	return l.opts.Level.Enabled(level)
-		return true
-	}
-	return false
 }
 
 func (l *defaultLogger) Fields(fields map[string]interface{}) Logger {
@@ -85,45 +84,57 @@ func logCallerfilePath(loggingFilePath string) string {
 	return loggingFilePath[idx+1:]
 }
 
-func (l *defaultLogger) Log(level Level, v ...interface{}) {
+func (l *defaultLogger) Info(args ...interface{}) {
-	if !l.V(level) {
+	l.log(InfoLevel, args...)
-		return
-	}
-
-	l.RLock()
-	fields := copyFields(l.opts.Fields)
-	l.RUnlock()
-
-	fields["level"] = level.String()
-
-	if _, file, line, ok := runtime.Caller(l.opts.CallerSkipCount); ok {
-		fields["file"] = fmt.Sprintf("%s:%d", logCallerfilePath(file), line)
-	}
-
-	rec := dlog.Record{
-		Timestamp: time.Now(),
-		Message:   fmt.Sprint(v...),
-		Metadata:  make(map[string]string, len(fields)),
-	}
-
-	keys := make([]string, 0, len(fields))
-	for k, v := range fields {
-		keys = append(keys, k)
-		rec.Metadata[k] = fmt.Sprintf("%v", v)
-	}
-
-	sort.Strings(keys)
-	metadata := ""
-
-	for _, k := range keys {
-		metadata += fmt.Sprintf(" %s=%v", k, fields[k])
-	}
-
-	t := rec.Timestamp.Format("2006-01-02 15:04:05")
-	fmt.Printf("%s %s %v\n", t, metadata, rec.Message)
 }
 
-func (l *defaultLogger) Logf(level Level, format string, v ...interface{}) {
+func (l *defaultLogger) Error(args ...interface{}) {
+	l.log(ErrorLevel, args...)
+}
+
+func (l *defaultLogger) Debug(args ...interface{}) {
+	l.log(DebugLevel, args...)
+}
+
+func (l *defaultLogger) Warn(args ...interface{}) {
+	l.log(WarnLevel, args...)
+}
+
+func (l *defaultLogger) Trace(args ...interface{}) {
+	l.log(TraceLevel, args...)
+}
+
+func (l *defaultLogger) Fatal(args ...interface{}) {
+	l.log(FatalLevel, args...)
+	os.Exit(1)
+}
+
+func (l *defaultLogger) Infof(msg string, args ...interface{}) {
+	l.logf(InfoLevel, msg, args...)
+}
+
+func (l *defaultLogger) Errorf(msg string, args ...interface{}) {
+	l.logf(ErrorLevel, msg, args...)
+}
+
+func (l *defaultLogger) Debugf(msg string, args ...interface{}) {
+	l.logf(DebugLevel, msg, args...)
+}
+
+func (l *defaultLogger) Warnf(msg string, args ...interface{}) {
+	l.logf(WarnLevel, msg, args...)
+}
+
+func (l *defaultLogger) Tracef(msg string, args ...interface{}) {
+	l.logf(TraceLevel, msg, args...)
+}
+
+func (l *defaultLogger) Fatalf(msg string, args ...interface{}) {
+	l.logf(FatalLevel, msg, args...)
+	os.Exit(1)
+}
+
+func (l *defaultLogger) log(level Level, args ...interface{}) {
 	if !l.V(level) {
 		return
 	}
@@ -135,30 +146,41 @@ func (l *defaultLogger) Logf(level Level, format string, v ...interface{}) {
 	fields["level"] = level.String()
 
 	if _, file, line, ok := runtime.Caller(l.opts.CallerSkipCount); ok {
-		fields["file"] = fmt.Sprintf("%s:%d", logCallerfilePath(file), line)
+		fields["caller"] = fmt.Sprintf("%s:%d", logCallerfilePath(file), line)
 	}
 
-	rec := dlog.Record{
+	fields["timestamp"] = time.Now().Format("2006-01-02 15:04:05")
-		Timestamp: time.Now(),
+	fields["msg"] = fmt.Sprint(args...)
-		Message:   fmt.Sprintf(format, v...),
+
-		Metadata:  make(map[string]string, len(fields)),
+	l.RLock()
+	_ = l.enc.Encode(fields)
+	l.RUnlock()
+}
+
+func (l *defaultLogger) logf(level Level, msg string, args ...interface{}) {
+	if !l.V(level) {
+		return
 	}
 
-	keys := make([]string, 0, len(fields))
+	l.RLock()
-	for k, v := range fields {
+	fields := copyFields(l.opts.Fields)
-		keys = append(keys, k)
+	l.RUnlock()
-		rec.Metadata[k] = fmt.Sprintf("%v", v)
+
+	fields["level"] = level.String()
+
+	if _, file, line, ok := runtime.Caller(l.opts.CallerSkipCount); ok {
+		fields["caller"] = fmt.Sprintf("%s:%d", logCallerfilePath(file), line)
 	}
 
-	sort.Strings(keys)
+	fields["timestamp"] = time.Now().Format("2006-01-02 15:04:05")
-	metadata := ""
+	if len(args) > 0 {
-
+		fields["msg"] = fmt.Sprintf(msg, args...)
-	for _, k := range keys {
+	} else {
-		metadata += fmt.Sprintf(" %s=%v", k, fields[k])
+		fields["msg"] = msg
 	}
-
+	l.RLock()
-	t := rec.Timestamp.Format("2006-01-02 15:04:05")
+	_ = l.enc.Encode(fields)
-	fmt.Printf("%s %s %v\n", t, metadata, rec.Message)
+	l.RUnlock()
 }
 
 func (l *defaultLogger) Options() Options {
@@ -172,19 +194,7 @@ func (l *defaultLogger) Options() Options {
 
 // NewLogger builds a new logger based on options
 func NewLogger(opts ...Option) Logger {
-	// Default options
+	l := &defaultLogger{opts: NewOptions(opts...)}
-	options := Options{
+	l.enc = json.NewEncoder(l.opts.Out)
-		Level:           InfoLevel,
-		Fields:          make(map[string]interface{}),
-		Out:             os.Stderr,
-		CallerSkipCount: 2,
-		Context:         context.Background(),
-	}
-
-	l := &defaultLogger{opts: options}
-	if err := l.Init(opts...); err != nil {
-		l.Log(FatalLevel, err)
-	}
-
 	return l
 }

logger/options.go

@@ -3,6 +3,7 @@ package logger
 import (
 	"context"
 	"io"
+	"os"
 )
 
 type Option func(*Options)
@@ -20,6 +21,20 @@ type Options struct {
 	Context context.Context
 }
 
+func NewOptions(opts ...Option) Options {
+	options := Options{
+		Level:           InfoLevel,
+		Fields:          make(map[string]interface{}),
+		Out:             os.Stderr,
+		CallerSkipCount: 2,
+		Context:         context.Background(),
+	}
+	for _, o := range opts {
+		o(&options)
+	}
+	return options
+}
+
 // WithFields set default fields for the logger
 func WithFields(fields map[string]interface{}) Option {
 	return func(args *Options) {

metadata/metadata.go

@@ -3,7 +3,7 @@ package metadata
 
 import (
 	"context"
-	"strings"
+	"net/textproto"
 )
 
 type metadataKey struct{}
@@ -13,54 +13,63 @@ type metadataKey struct{}
 // from Transport headers.
 type Metadata map[string]string
 
-func (md Metadata) Get(key string) (string, bool) {
+var (
-	// attempt to get as is
+	// DefaultMetadataSize used when need to init new Metadata
-	val, ok := md[key]
+	DefaultMetadataSize = 6
-	if ok {
+)
-		return val, ok
-	}
 
-	// attempt to get lower case
+// Get returns value from metadata by key
-	val, ok = md[strings.Title(key)]
+func (md Metadata) Get(key string) (string, bool) {
+	// fast path
+	val, ok := md[key]
+	if !ok {
+		// slow path
+		val, ok = md[textproto.CanonicalMIMEHeaderKey(key)]
+	}
 	return val, ok
 }
 
+// Set is used to store value in metadata
 func (md Metadata) Set(key, val string) {
-	md[key] = val
+	md[textproto.CanonicalMIMEHeaderKey(key)] = val
 }
 
-func (md Metadata) Delete(key string) {
+// Del is used to remove value from metadata
-	// delete key as-is
+func (md Metadata) Del(key string) {
-	delete(md, key)
+	// fast path
-	// delete also Title key
+	if _, ok := md[key]; ok {
-	delete(md, strings.Title(key))
+		delete(md, key)
+	} else {
+		// slow path
+		delete(md, textproto.CanonicalMIMEHeaderKey(key))
+	}
 }
 
 // Copy makes a copy of the metadata
 func Copy(md Metadata) Metadata {
-	cmd := make(Metadata, len(md))
+	nmd := New(len(md))
-	for k, v := range md {
+	for key, val := range md {
-		cmd[k] = v
+		nmd.Set(key, val)
 	}
-	return cmd
+	return nmd
 }
 
-// Delete key from metadata
+func Del(ctx context.Context, key string) context.Context {
-func Delete(ctx context.Context, k string) context.Context {
+	md, ok := FromContext(ctx)
-	return Set(ctx, k, "")
+	if !ok {
+		md = New(0)
+	}
+	md.Del(key)
+	return context.WithValue(ctx, metadataKey{}, md)
 }
 
 // Set add key with val to metadata
-func Set(ctx context.Context, k, v string) context.Context {
+func Set(ctx context.Context, key, val string) context.Context {
 	md, ok := FromContext(ctx)
 	if !ok {
-		md = make(Metadata)
+		md = New(0)
-	}
-	if v == "" {
-		delete(md, k)
-	} else {
-		md[k] = v
 	}
+	md.Set(key, val)
 	return context.WithValue(ctx, metadataKey{}, md)
 }
 
@@ -70,57 +79,56 @@ func Get(ctx context.Context, key string) (string, bool) {
 	if !ok {
 		return "", ok
 	}
-	// attempt to get as is
+	return md.Get(key)
-	val, ok := md[key]
-	if ok {
-		return val, ok
-	}
-
-	// attempt to get lower case
-	val, ok = md[strings.Title(key)]
-
-	return val, ok
 }
 
 // FromContext returns metadata from the given context
 func FromContext(ctx context.Context) (Metadata, bool) {
+	if ctx == nil {
+		return nil, false
+	}
 	md, ok := ctx.Value(metadataKey{}).(Metadata)
 	if !ok {
 		return nil, ok
 	}
+	nmd := Copy(md)
+	return nmd, ok
+}
 
-	// capitalise all values
+// New return new sized metadata
-	newMD := make(Metadata, len(md))
+func New(size int) Metadata {
-	for k, v := range md {
+	if size == 0 {
-		newMD[strings.Title(k)] = v
+		size = DefaultMetadataSize
 	}
-
+	return make(Metadata, size)
-	return newMD, ok
 }
 
 // NewContext creates a new context with the given metadata
 func NewContext(ctx context.Context, md Metadata) context.Context {
-	return context.WithValue(ctx, metadataKey{}, md)
-}
-
-// MergeContext merges metadata to existing metadata, overwriting if specified
-func MergeContext(ctx context.Context, patchMd Metadata, overwrite bool) context.Context {
 	if ctx == nil {
 		ctx = context.Background()
 	}
-	md, _ := ctx.Value(metadataKey{}).(Metadata)
+	return context.WithValue(ctx, metadataKey{}, Copy(md))
-	cmd := make(Metadata, len(md))
+}
-	for k, v := range md {
+
-		cmd[k] = v
+// MergeContext merges metadata to existing metadata, overwriting if specified
+func MergeContext(ctx context.Context, pmd Metadata, overwrite bool) context.Context {
+	if ctx == nil {
+		ctx = context.Background()
 	}
-	for k, v := range patchMd {
+	md, ok := FromContext(ctx)
-		if _, ok := cmd[k]; ok && !overwrite {
+	if !ok {
+		return context.WithValue(ctx, metadataKey{}, Copy(pmd))
+	}
+	nmd := Copy(md)
+	for key, val := range pmd {
+		if _, ok := nmd[key]; ok && !overwrite {
 			// skip
-		} else if v != "" {
+		} else if val != "" {
-			cmd[k] = v
+			nmd.Set(key, val)
 		} else {
-			delete(cmd, k)
+			nmd.Del(key)
 		}
 	}
-	return context.WithValue(ctx, metadataKey{}, cmd)
+	return context.WithValue(ctx, metadataKey{}, nmd)
 }

metadata/metadata_test.go

@@ -6,6 +6,30 @@ import (
 	"testing"
 )
 
+func TestMedataCanonicalKey(t *testing.T) {
+	ctx := Set(context.TODO(), "x-request-id", "12345")
+	v, ok := Get(ctx, "x-request-id")
+	if !ok {
+		t.Fatalf("failed to get x-request-id")
+	} else if v != "12345" {
+		t.Fatalf("invalid metadata value: %s != %s", "12345", v)
+	}
+
+	v, ok = Get(ctx, "X-Request-Id")
+	if !ok {
+		t.Fatalf("failed to get x-request-id")
+	} else if v != "12345" {
+		t.Fatalf("invalid metadata value: %s != %s", "12345", v)
+	}
+	v, ok = Get(ctx, "X-Request-ID")
+	if !ok {
+		t.Fatalf("failed to get x-request-id")
+	} else if v != "12345" {
+		t.Fatalf("invalid metadata value: %s != %s", "12345", v)
+	}
+
+}
+
 func TestMetadataSet(t *testing.T) {
 	ctx := Set(context.TODO(), "Key", "val")
 
@@ -25,7 +49,7 @@ func TestMetadataDelete(t *testing.T) {
 	}
 
 	ctx := NewContext(context.TODO(), md)
-	ctx = Delete(ctx, "Baz")
+	ctx = Del(ctx, "Baz")
 
 	emd, ok := FromContext(ctx)
 	if !ok {
@@ -39,10 +63,19 @@ func TestMetadataDelete(t *testing.T) {
 
 }
 
+func TestNilContext(t *testing.T) {
+	var ctx context.Context
+
+	_, ok := FromContext(ctx)
+	if ok {
+		t.Fatal("nil context")
+	}
+}
+
 func TestMetadataCopy(t *testing.T) {
 	md := Metadata{
 		"Foo": "bar",
-		"bar": "baz",
+		"Bar": "baz",
 	}
 
 	cp := Copy(md)

metrics/reporter.go

@@ -7,7 +7,7 @@ import "time"
 type Tags map[string]string
 
 var (
-	Defaultreporter Reporter
+	DefaultReporter Reporter
 )
 
 // Reporter is an interface for collecting and instrumenting metrics

micro.go

@@ -4,6 +4,7 @@ package micro
 import (
 	"context"
 
+	"github.com/unistack-org/micro/v3/broker"
 	"github.com/unistack-org/micro/v3/client"
 	"github.com/unistack-org/micro/v3/server"
 )
@@ -17,13 +18,15 @@ type Service interface {
 	// The service name
 	Name() string
 	// Init initialises options
-	Init(...Option)
+	Init(...Option) error
 	// Options returns the current options
 	Options() Options
 	// Client is used to call services
 	Client() client.Client
 	// Server is for handling requests and events
 	Server() server.Server
+	// Broker is for broker usage
+	Broker() broker.Broker
 	// Run the service
 	Run() error
 	// The service implementation
@@ -68,10 +71,8 @@ type Event interface {
 	Publish(ctx context.Context, msg interface{}, opts ...client.PublishOption) error
 }
 
-// Type alias to satisfy the deprecation
-type Publisher = Event
-
 var (
+	// HeaderPrefix for all headers passed
 	HeaderPrefix = "Micro-"
 )
 
@@ -101,11 +102,6 @@ func NewEvent(topic string, c client.Client) Event {
 	return &event{c, topic}
 }
 
-// Deprecated: NewPublisher returns a new Publisher
-func NewPublisher(topic string, c client.Client) Event {
-	return NewEvent(topic, c)
-}
-
 // RegisterHandler is syntactic sugar for registering a handler
 func RegisterHandler(s server.Server, h interface{}, opts ...server.HandlerOption) error {
 	return s.Handle(s.NewHandler(h, opts...))

network/options.go

@@ -3,11 +3,12 @@ package network
 import (
 	"github.com/google/uuid"
 	"github.com/unistack-org/micro/v3/logger"
+	"github.com/unistack-org/micro/v3/network/tunnel"
 	"github.com/unistack-org/micro/v3/proxy"
 	"github.com/unistack-org/micro/v3/router"
-	"github.com/unistack-org/micro/v3/tunnel"
 )
 
+// Option func
 type Option func(*Options)
 
 // Options configure network

network/transport/noop.go

@@ -0,0 +1,76 @@
+package transport
+
+import "context"
+
+type noopTransport struct {
+	opts Options
+}
+
+func NewTransport(opts ...Option) Transport {
+	return &noopTransport{opts: NewOptions(opts...)}
+}
+
+func (t *noopTransport) Init(opts ...Option) error {
+	for _, o := range opts {
+		o(&t.opts)
+	}
+	return nil
+}
+
+func (t *noopTransport) Options() Options {
+	return t.opts
+}
+
+func (t *noopTransport) Dial(ctx context.Context, addr string, opts ...DialOption) (Client, error) {
+	options := NewDialOptions(opts...)
+	return &noopClient{opts: options}, nil
+}
+
+func (t *noopTransport) Listen(ctx context.Context, addr string, opts ...ListenOption) (Listener, error) {
+	options := NewListenOptions(opts...)
+	return &noopListener{opts: options}, nil
+}
+
+func (t *noopTransport) String() string {
+	return "noop"
+}
+
+type noopClient struct {
+	opts DialOptions
+}
+
+func (c *noopClient) Close() error {
+	return nil
+}
+
+func (c *noopClient) Local() string {
+	return ""
+}
+
+func (c *noopClient) Remote() string {
+	return ""
+}
+
+func (c *noopClient) Recv(*Message) error {
+	return nil
+}
+
+func (c *noopClient) Send(*Message) error {
+	return nil
+}
+
+type noopListener struct {
+	opts ListenOptions
+}
+
+func (l *noopListener) Addr() string {
+	return ""
+}
+
+func (l *noopListener) Accept(fn func(Socket)) error {
+	return nil
+}
+
+func (l *noopListener) Close() error {
+	return nil
+}

network/transport/options.go

@@ -31,6 +31,21 @@ type Options struct {
 	Context context.Context
 }
 
+// NewOptions returns new options
+func NewOptions(opts ...Option) Options {
+	options := Options{
+		Logger:  logger.DefaultLogger,
+		Context: context.Background(),
+	}
+
+	for _, o := range opts {
+		o(&options)
+	}
+
+	return options
+}
+
+// DialOptions struct
 type DialOptions struct {
 	// Tells the transport this is a streaming connection with
 	// multiple calls to send/recv and that send may not even be called
@@ -46,6 +61,21 @@ type DialOptions struct {
 	Context context.Context
 }
 
+// NewDialOptions returns new DialOptions
+func NewDialOptions(opts ...DialOption) DialOptions {
+	options := DialOptions{
+		Timeout: DefaultDialTimeout,
+		Context: context.Background(),
+	}
+
+	for _, o := range opts {
+		o(&options)
+	}
+
+	return options
+}
+
+// ListenOptions struct
 type ListenOptions struct {
 	// TODO: add tls options when listening
 	// Currently set in global options
@@ -55,6 +85,19 @@ type ListenOptions struct {
 	Context context.Context
 }
 
+// NewListenOptions returns new ListenOptions
+func NewListenOptions(opts ...ListenOption) ListenOptions {
+	options := ListenOptions{
+		Context: context.Background(),
+	}
+
+	for _, o := range opts {
+		o(&options)
+	}
+
+	return options
+}
+
 // Addrs to use for transport
 func Addrs(addrs ...string) Option {
 	return func(o *Options) {
@@ -69,6 +112,13 @@ func Logger(l logger.Logger) Option {
 	}
 }
 
+// Context sets the context
+func Context(ctx context.Context) Option {
+	return func(o *Options) {
+		o.Context = ctx
+	}
+}
+
 // Codec sets the codec used for encoding where the transport
 // does not support message headers
 func Codec(c codec.Marshaler) Option {
@@ -99,14 +149,14 @@ func TLSConfig(t *tls.Config) Option {
 	}
 }
 
-// Indicates whether this is a streaming connection
+// WithStream indicates whether this is a streaming connection
 func WithStream() DialOption {
 	return func(o *DialOptions) {
 		o.Stream = true
 	}
 }
 
-// Timeout used when dialling the remote side
+// WithTimeout used when dialling the remote side
 func WithTimeout(d time.Duration) DialOption {
 	return func(o *DialOptions) {
 		o.Timeout = d

network/transport/transport.go

@@ -2,11 +2,15 @@
 package transport
 
 import (
+	"context"
 	"time"
 )
 
 var (
-	DefaultTransport Transport
+	// DefaultTransport is the global default transport
+	DefaultTransport Transport = NewTransport()
+	// Default dial timeout
+	DefaultDialTimeout = time.Second * 5
 )
 
 // Transport is an interface which is used for communication between
@@ -15,8 +19,8 @@ var (
 type Transport interface {
 	Init(...Option) error
 	Options() Options
-	Dial(addr string, opts ...DialOption) (Client, error)
+	Dial(ctx context.Context, addr string, opts ...DialOption) (Client, error)
-	Listen(addr string, opts ...ListenOption) (Listener, error)
+	Listen(ctx context.Context, addr string, opts ...ListenOption) (Listener, error)
 	String() string
 }
 
@@ -55,8 +59,3 @@ type DialOption func(*DialOptions)
 
 // ListenOption is the option signature
 type ListenOption func(*ListenOptions)
-
-var (
-	// Default dial timeout
-	DefaultDialTimeout = time.Second * 5
-)

network/tunnel/broker/broker.go

@@ -7,8 +7,8 @@ import (
 
 	"github.com/unistack-org/micro/v3/broker"
 	"github.com/unistack-org/micro/v3/logger"
-	"github.com/unistack-org/micro/v3/transport"
+	"github.com/unistack-org/micro/v3/network/transport"
-	"github.com/unistack-org/micro/v3/tunnel"
+	"github.com/unistack-org/micro/v3/network/tunnel"
 )
 
 type tunBroker struct {
@@ -49,18 +49,18 @@ func (t *tunBroker) Address() string {
 	return t.tunnel.Address()
 }
 
-func (t *tunBroker) Connect() error {
+func (t *tunBroker) Connect(ctx context.Context) error {
-	return t.tunnel.Connect()
+	return t.tunnel.Connect(ctx)
 }
 
-func (t *tunBroker) Disconnect() error {
+func (t *tunBroker) Disconnect(ctx context.Context) error {
-	return t.tunnel.Close()
+	return t.tunnel.Close(ctx)
 }
 
-func (t *tunBroker) Publish(topic string, m *broker.Message, opts ...broker.PublishOption) error {
+func (t *tunBroker) Publish(ctx context.Context, topic string, m *broker.Message, opts ...broker.PublishOption) error {
 	// TODO: this is probably inefficient, we might want to just maintain an open connection
 	// it may be easier to add broadcast to the tunnel
-	c, err := t.tunnel.Dial(topic, tunnel.DialMode(tunnel.Multicast))
+	c, err := t.tunnel.Dial(ctx, topic, tunnel.DialMode(tunnel.Multicast))
 	if err != nil {
 		return err
 	}
@@ -72,21 +72,16 @@ func (t *tunBroker) Publish(topic string, m *broker.Message, opts ...broker.Publ
 	})
 }
 
-func (t *tunBroker) Subscribe(topic string, h broker.Handler, opts ...broker.SubscribeOption) (broker.Subscriber, error) {
+func (t *tunBroker) Subscribe(ctx context.Context, topic string, h broker.Handler, opts ...broker.SubscribeOption) (broker.Subscriber, error) {
-	l, err := t.tunnel.Listen(topic, tunnel.ListenMode(tunnel.Multicast))
+	l, err := t.tunnel.Listen(ctx, topic, tunnel.ListenMode(tunnel.Multicast))
 	if err != nil {
 		return nil, err
 	}
 
-	var options broker.SubscribeOptions
-	for _, o := range opts {
-		o(&options)
-	}
-
 	tunSub := &tunSubscriber{
 		topic:    topic,
 		handler:  h,
-		opts:     options,
+		opts:     broker.NewSubscribeOptions(opts...),
 		closed:   make(chan bool),
 		listener: l,
 	}
@@ -117,9 +112,13 @@ func (t *tunSubscriber) run() {
 		// receive message
 		m := new(transport.Message)
 		if err := c.Recv(m); err != nil {
-			logger.Error(err)
+			if logger.V(logger.ErrorLevel) {
+				logger.Error(err.Error())
+			}
 			if err = c.Close(); err != nil {
-				logger.Error(err)
+				if logger.V(logger.ErrorLevel) {
+					logger.Error(err.Error())
+				}
 			}
 			continue
 		}
@@ -146,7 +145,7 @@ func (t *tunSubscriber) Topic() string {
 	return t.topic
 }
 
-func (t *tunSubscriber) Unsubscribe() error {
+func (t *tunSubscriber) Unsubscribe(ctx context.Context) error {
 	select {
 	case <-t.closed:
 		return nil
@@ -173,12 +172,7 @@ func (t *tunEvent) Error() error {
 }
 
 func NewBroker(opts ...broker.Option) (broker.Broker, error) {
-	options := broker.Options{
+	options := broker.NewOptions(opts...)
-		Context: context.Background(),
-	}
-	for _, o := range opts {
-		o(&options)
-	}
 
 	t, ok := options.Context.Value(tunnelKey{}).(tunnel.Tunnel)
 	if !ok {

network/tunnel/options.go

@@ -5,7 +5,7 @@ import (
 
 	"github.com/google/uuid"
 	"github.com/unistack-org/micro/v3/logger"
-	"github.com/unistack-org/micro/v3/transport"
+	"github.com/unistack-org/micro/v3/network/transport"
 )
 
 var (
@@ -15,6 +15,7 @@ var (
 	DefaultToken = "go.micro.tunnel"
 )
 
+// Option func
 type Option func(*Options)
 
 // Options provides network configuration options
@@ -33,8 +34,10 @@ type Options struct {
 	Logger logger.Logger
 }
 
+// DialOption func
 type DialOption func(*DialOptions)
 
+// DialOptions provides dial options
 type DialOptions struct {
 	// Link specifies the link to use
 	Link string
@@ -46,8 +49,10 @@ type DialOptions struct {
 	Timeout time.Duration
 }
 
+// ListenOption func
 type ListenOption func(*ListenOptions)
 
+// ListenOptions provides listen options
 type ListenOptions struct {
 	// specify mode of the session
 	Mode Mode
@@ -55,7 +60,7 @@ type ListenOptions struct {
 	Timeout time.Duration
 }
 
-// The tunnel id
+// Id sets the tunnel id
 func Id(id string) Option {
 	return func(o *Options) {
 		o.Id = id
@@ -69,7 +74,7 @@ func Logger(l logger.Logger) Option {
 	}
 }
 
-// The tunnel address
+// Address sets the tunnel address
 func Address(a string) Option {
 	return func(o *Options) {
 		o.Address = a
@@ -97,23 +102,21 @@ func Transport(t transport.Transport) Option {
 	}
 }
 
-// Listen options
+// ListenMode option
 func ListenMode(m Mode) ListenOption {
 	return func(o *ListenOptions) {
 		o.Mode = m
 	}
 }
 
-// Timeout for reads and writes on the listener session
+// ListenTimeout for reads and writes on the listener session
 func ListenTimeout(t time.Duration) ListenOption {
 	return func(o *ListenOptions) {
 		o.Timeout = t
 	}
 }
 
-// Dial options
+// DialMode multicast sets the multicast option to send only to those mapped
-
-// Dial multicast sets the multicast option to send only to those mapped
 func DialMode(m Mode) DialOption {
 	return func(o *DialOptions) {
 		o.Mode = m
@@ -144,10 +147,14 @@ func DialWait(b bool) DialOption {
 }
 
 // DefaultOptions returns router default options
-func DefaultOptions() Options {
+func NewOptions(opts ...Option) Options {
-	return Options{
+	options := Options{
 		Id:      uuid.New().String(),
 		Address: DefaultAddress,
 		Token:   DefaultToken,
 	}
+	for _, o := range opts {
+		o(&options)
+	}
+	return options
 }

network/tunnel/transport/listener.go

@@ -1,8 +1,8 @@
 package transport
 
 import (
-	"github.com/unistack-org/micro/v3/transport"
+	"github.com/unistack-org/micro/v3/network/transport"
-	"github.com/unistack-org/micro/v3/tunnel"
+	"github.com/unistack-org/micro/v3/network/tunnel"
 )
 
 type tunListener struct {

network/tunnel/transport/transport.go

@@ -5,8 +5,8 @@ import (
 	"context"
 	"fmt"
 
-	"github.com/unistack-org/micro/v3/transport"
+	"github.com/unistack-org/micro/v3/network/transport"
-	"github.com/unistack-org/micro/v3/tunnel"
+	"github.com/unistack-org/micro/v3/network/tunnel"
 )
 
 type tunTransport struct {
@@ -26,7 +26,7 @@ func (t *tunTransport) Init(opts ...transport.Option) error {
 
 	// close the existing tunnel
 	if t.tunnel != nil {
-		t.tunnel.Close()
+		t.tunnel.Close(context.TODO())
 	}
 
 	// get the tunnel
@@ -47,12 +47,12 @@ func (t *tunTransport) Init(opts ...transport.Option) error {
 	return nil
 }
 
-func (t *tunTransport) Dial(addr string, opts ...transport.DialOption) (transport.Client, error) {
+func (t *tunTransport) Dial(ctx context.Context, addr string, opts ...transport.DialOption) (transport.Client, error) {
-	if err := t.tunnel.Connect(); err != nil {
+	if err := t.tunnel.Connect(ctx); err != nil {
 		return nil, err
 	}
 
-	c, err := t.tunnel.Dial(addr)
+	c, err := t.tunnel.Dial(ctx, addr)
 	if err != nil {
 		return nil, err
 	}
@@ -60,12 +60,12 @@ func (t *tunTransport) Dial(addr string, opts ...transport.DialOption) (transpor
 	return c, nil
 }
 
-func (t *tunTransport) Listen(addr string, opts ...transport.ListenOption) (transport.Listener, error) {
+func (t *tunTransport) Listen(ctx context.Context, addr string, opts ...transport.ListenOption) (transport.Listener, error) {
-	if err := t.tunnel.Connect(); err != nil {
+	if err := t.tunnel.Connect(ctx); err != nil {
 		return nil, err
 	}
 
-	l, err := t.tunnel.Listen(addr)
+	l, err := t.tunnel.Listen(ctx, addr)
 	if err != nil {
 		return nil, err
 	}
@@ -93,7 +93,7 @@ func NewTransport(opts ...transport.Option) transport.Transport {
 	return t
 }
 
-// WithTransport sets the internal tunnel
+// WithTunnel sets the internal tunnel
 func WithTunnel(t tunnel.Tunnel) transport.Option {
 	return func(o *transport.Options) {
 		if o.Context == nil {

network/tunnel/tunnel.go

@@ -2,10 +2,11 @@
 package tunnel
 
 import (
+	"context"
 	"errors"
 	"time"
 
-	"github.com/unistack-org/micro/v3/transport"
+	"github.com/unistack-org/micro/v3/network/transport"
 )
 
 var (
@@ -55,15 +56,15 @@ type Tunnel interface {
 	// Address returns the address the tunnel is listening on
 	Address() string
 	// Connect connects the tunnel
-	Connect() error
+	Connect(ctx context.Context) error
 	// Close closes the tunnel
-	Close() error
+	Close(ctx context.Context) error
 	// Links returns all the links the tunnel is connected to
 	Links() []Link
 	// Dial allows a client to connect to a channel
-	Dial(channel string, opts ...DialOption) (Session, error)
+	Dial(ctx context.Context, channel string, opts ...DialOption) (Session, error)
 	// Listen allows to accept connections on a channel
-	Listen(channel string, opts ...ListenOption) (Listener, error)
+	Listen(ctx context.Context, channel string, opts ...ListenOption) (Listener, error)
 	// String returns the name of the tunnel implementation
 	String() string
 }

options.go

@@ -11,15 +11,15 @@ import (
 	"github.com/unistack-org/micro/v3/client"
 	"github.com/unistack-org/micro/v3/config"
 	"github.com/unistack-org/micro/v3/debug/profile"
-	"github.com/unistack-org/micro/v3/debug/trace"
 	"github.com/unistack-org/micro/v3/logger"
+	"github.com/unistack-org/micro/v3/network/transport"
 	"github.com/unistack-org/micro/v3/registry"
 	"github.com/unistack-org/micro/v3/router"
 	"github.com/unistack-org/micro/v3/runtime"
 	"github.com/unistack-org/micro/v3/selector"
 	"github.com/unistack-org/micro/v3/server"
 	"github.com/unistack-org/micro/v3/store"
-	"github.com/unistack-org/micro/v3/transport"
+	"github.com/unistack-org/micro/v3/tracer"
 )
 
 // Options for micro service
@@ -47,14 +47,12 @@ type Options struct {
 	// Other options for implementations of the interface
 	// can be stored in a context
 	Context context.Context
-
-	Signal bool
 }
 
-func newOptions(opts ...Option) Options {
+// NewOptions returns new Options filled with defaults and overrided by provided opts
-	opt := Options{
+func NewOptions(opts ...Option) Options {
+	options := Options{
 		Context:   context.Background(),
-		Signal:    true,
 		Server:    server.DefaultServer,
 		Client:    client.DefaultClient,
 		Broker:    broker.DefaultBroker,
@@ -70,12 +68,13 @@ func newOptions(opts ...Option) Options {
 	}
 
 	for _, o := range opts {
-		o(&opt)
+		o(&options)
 	}
 
-	return opt
+	return options
 }
 
+// Option func
 type Option func(*Options)
 
 // Broker to be used for service
@@ -92,6 +91,7 @@ func Broker(b broker.Broker) Option {
 	}
 }
 
+// Cmd to be used for service
 func Cmd(c cmd.Cmd) Option {
 	return func(o *Options) {
 		o.Cmd = c
@@ -113,15 +113,6 @@ func Context(ctx context.Context) Option {
 	}
 }
 
-// HandleSignal toggles automatic installation of the signal handler that
-// traps TERM, INT, and QUIT.  Users of this feature to disable the signal
-// handler, should control liveness of the service through the context.
-func HandleSignal(b bool) Option {
-	return func(o *Options) {
-		o.Signal = b
-	}
-}
-
 // Profile to be used for debug profile
 func Profile(p profile.Profile) Option {
 	return func(o *Options) {
@@ -171,7 +162,7 @@ func Registry(r registry.Registry) Option {
 }
 
 // Tracer sets the tracer for the service
-func Tracer(t trace.Tracer) Option {
+func Tracer(t tracer.Tracer) Option {
 	return func(o *Options) {
 		if o.Server != nil {
 			//todo client trace

registry/extractor.go

@@ -0,0 +1,125 @@
+package registry
+
+import (
+	"fmt"
+	"reflect"
+	"strings"
+
+	"github.com/unistack-org/micro/v3/metadata"
+)
+
+// Extract *Value from reflect.Type
+func ExtractValue(v reflect.Type, d int) *Value {
+	if d == 3 {
+		return nil
+	}
+	if v == nil {
+		return nil
+	}
+
+	if v.Kind() == reflect.Ptr {
+		v = v.Elem()
+	}
+
+	arg := &Value{
+		Name: v.Name(),
+		Type: v.Name(),
+	}
+
+	switch v.Kind() {
+	case reflect.Struct:
+		for i := 0; i < v.NumField(); i++ {
+			f := v.Field(i)
+			val := ExtractValue(f.Type, d+1)
+			if val == nil {
+				continue
+			}
+
+			// if we can find a json tag use it
+			if tags := f.Tag.Get("json"); len(tags) > 0 {
+				parts := strings.Split(tags, ",")
+				if parts[0] == "-" || parts[0] == "omitempty" {
+					continue
+				}
+				val.Name = parts[0]
+			}
+
+			// if there's no name default it
+			if len(val.Name) == 0 {
+				val.Name = v.Field(i).Name
+			}
+
+			arg.Values = append(arg.Values, val)
+		}
+	case reflect.Slice:
+		p := v.Elem()
+		if p.Kind() == reflect.Ptr {
+			p = p.Elem()
+		}
+		arg.Type = "[]" + p.Name()
+	}
+
+	return arg
+}
+
+// ExtractEndpoint extract *Endpoint from reflect.Method
+func ExtractEndpoint(method reflect.Method) *Endpoint {
+	if method.PkgPath != "" {
+		return nil
+	}
+
+	var rspType, reqType reflect.Type
+	var stream bool
+	mt := method.Type
+
+	switch mt.NumIn() {
+	case 3:
+		reqType = mt.In(1)
+		rspType = mt.In(2)
+	case 4:
+		reqType = mt.In(2)
+		rspType = mt.In(3)
+	default:
+		return nil
+	}
+
+	// are we dealing with a stream?
+	switch rspType.Kind() {
+	case reflect.Func, reflect.Interface:
+		stream = true
+	}
+
+	request := ExtractValue(reqType, 0)
+	response := ExtractValue(rspType, 0)
+
+	ep := &Endpoint{
+		Name:     method.Name,
+		Request:  request,
+		Response: response,
+		Metadata: metadata.New(0),
+	}
+
+	if stream {
+		ep.Metadata = map[string]string{
+			"stream": fmt.Sprintf("%v", stream),
+		}
+	}
+
+	return ep
+}
+
+// ExtractSubValue exctact *Value from reflect.Type
+func ExtractSubValue(typ reflect.Type) *Value {
+	var reqType reflect.Type
+	switch typ.NumIn() {
+	case 1:
+		reqType = typ.In(0)
+	case 2:
+		reqType = typ.In(1)
+	case 3:
+		reqType = typ.In(2)
+	default:
+		return nil
+	}
+	return ExtractValue(reqType, 0)
+}

registry/extractor_test.go

@@ -0,0 +1,63 @@
+package registry
+
+import (
+	"context"
+	"reflect"
+	"testing"
+)
+
+type testHandler struct{}
+
+type testRequest struct{}
+
+type testResponse struct{}
+
+func (t *testHandler) Test(ctx context.Context, req *testRequest, rsp *testResponse) error {
+	return nil
+}
+
+func TestExtractEndpoint(t *testing.T) {
+	handler := &testHandler{}
+	typ := reflect.TypeOf(handler)
+
+	var endpoints []*Endpoint
+
+	for m := 0; m < typ.NumMethod(); m++ {
+		if e := ExtractEndpoint(typ.Method(m)); e != nil {
+			endpoints = append(endpoints, e)
+		}
+	}
+
+	if i := len(endpoints); i != 1 {
+		t.Errorf("Expected 1 endpoint, have %d", i)
+	}
+
+	if endpoints[0].Name != "Test" {
+		t.Errorf("Expected handler Test, got %s", endpoints[0].Name)
+	}
+
+	if endpoints[0].Request == nil {
+		t.Error("Expected non nil request")
+	}
+
+	if endpoints[0].Response == nil {
+		t.Error("Expected non nil request")
+	}
+
+	if endpoints[0].Request.Name != "testRequest" {
+		t.Errorf("Expected testRequest got %s", endpoints[0].Request.Name)
+	}
+
+	if endpoints[0].Response.Name != "testResponse" {
+		t.Errorf("Expected testResponse got %s", endpoints[0].Response.Name)
+	}
+
+	if endpoints[0].Request.Type != "testRequest" {
+		t.Errorf("Expected testRequest type got %s", endpoints[0].Request.Type)
+	}
+
+	if endpoints[0].Response.Type != "testResponse" {
+		t.Errorf("Expected testResponse type got %s", endpoints[0].Response.Type)
+	}
+
+}

registry/noop.go

@@ -1,11 +1,15 @@
 package registry
 
-import "fmt"
+import (
+	"context"
+	"fmt"
+)
 
 type noopRegistry struct {
 	opts Options
 }
 
+// Init initialize registry
 func (n *noopRegistry) Init(opts ...Option) error {
 	for _, o := range opts {
 		o(&n.opts)
@@ -13,41 +17,52 @@ func (n *noopRegistry) Init(opts ...Option) error {
 	return nil
 }
 
+// Options returns options struct
 func (n *noopRegistry) Options() Options {
 	return n.opts
 }
 
-func (n *noopRegistry) Register(*Service, ...RegisterOption) error {
+// Connect opens connection to registry
+func (n *noopRegistry) Connect(ctx context.Context) error {
 	return nil
 }
 
-func (n *noopRegistry) Deregister(*Service, ...DeregisterOption) error {
+// Disconnect close connection to registry
+func (n *noopRegistry) Disconnect(ctx context.Context) error {
 	return nil
 }
 
-func (n *noopRegistry) GetService(string, ...GetOption) ([]*Service, error) {
+// Register registers service
+func (n *noopRegistry) Register(ctx context.Context, svc *Service, opts ...RegisterOption) error {
+	return nil
+}
+
+// Deregister deregisters service
+func (n *noopRegistry) Deregister(ctx context.Context, svc *Service, opts ...DeregisterOption) error {
+	return nil
+}
+
+// GetService returns servive info
+func (n *noopRegistry) GetService(ctx context.Context, name string, opts ...GetOption) ([]*Service, error) {
 	return []*Service{}, nil
 }
 
-func (n *noopRegistry) ListServices(...ListOption) ([]*Service, error) {
+// ListServices listing services
+func (n *noopRegistry) ListServices(ctx context.Context, opts ...ListOption) ([]*Service, error) {
 	return []*Service{}, nil
 }
 
-func (n *noopRegistry) Watch(...WatchOption) (Watcher, error) {
+// Watch is used to watch for service changes
+func (n *noopRegistry) Watch(ctx context.Context, opts ...WatchOption) (Watcher, error) {
 	return nil, fmt.Errorf("not implemented")
 }
 
+// String returns registry string representation
 func (n *noopRegistry) String() string {
 	return "noop"
 }
 
-// newRegistry returns a new noop registry
+// NewRegistry returns a new noop registry
-func newRegistry(opts ...Option) Registry {
+func NewRegistry(opts ...Option) Registry {
-	options := NewOptions()
+	return &noopRegistry{opts: NewOptions(opts...)}
-
-	for _, o := range opts {
-		o(&options)
-	}
-
-	return &noopRegistry{opts: options}
 }

registry/options.go

@@ -19,11 +19,15 @@ type Options struct {
 	Context context.Context
 }
 
-func NewOptions() Options {
+func NewOptions(opts ...Option) Options {
-	return Options{
+	options := Options{
 		Logger:  logger.DefaultLogger,
 		Context: context.Background(),
 	}
+	for _, o := range opts {
+		o(&options)
+	}
+	return options
 }
 
 type RegisterOptions struct {
@@ -33,6 +37,19 @@ type RegisterOptions struct {
 	Context context.Context
 	// Domain to register the service in
 	Domain string
+	// Attempts specify attempts for register
+	Attempts int
+}
+
+func NewRegisterOptions(opts ...RegisterOption) RegisterOptions {
+	options := RegisterOptions{
+		Domain:  DefaultDomain,
+		Context: context.Background(),
+	}
+	for _, o := range opts {
+		o(&options)
+	}
+	return options
 }
 
 type WatchOptions struct {
@@ -46,10 +63,34 @@ type WatchOptions struct {
 	Domain string
 }
 
+func NewWatchOptions(opts ...WatchOption) WatchOptions {
+	options := WatchOptions{
+		Domain:  DefaultDomain,
+		Context: context.Background(),
+	}
+	for _, o := range opts {
+		o(&options)
+	}
+	return options
+}
+
 type DeregisterOptions struct {
 	Context context.Context
 	// Domain the service was registered in
 	Domain string
+	// Atempts specify max attempts for deregister
+	Attempts int
+}
+
+func NewDeregisterOptions(opts ...DeregisterOption) DeregisterOptions {
+	options := DeregisterOptions{
+		Domain:  DefaultDomain,
+		Context: context.Background(),
+	}
+	for _, o := range opts {
+		o(&options)
+	}
+	return options
 }
 
 type GetOptions struct {
@@ -58,12 +99,34 @@ type GetOptions struct {
 	Domain string
 }
 
+func NewGetOptions(opts ...GetOption) GetOptions {
+	options := GetOptions{
+		Domain:  DefaultDomain,
+		Context: context.Background(),
+	}
+	for _, o := range opts {
+		o(&options)
+	}
+	return options
+}
+
 type ListOptions struct {
 	Context context.Context
 	// Domain to scope the request to
 	Domain string
 }
 
+func NewListOptions(opts ...ListOption) ListOptions {
+	options := ListOptions{
+		Domain:  DefaultDomain,
+		Context: context.Background(),
+	}
+	for _, o := range opts {
+		o(&options)
+	}
+	return options
+}
+
 // Addrs is the registry addresses to use
 func Addrs(addrs ...string) Option {
 	return func(o *Options) {
@@ -91,6 +154,13 @@ func Logger(l logger.Logger) Option {
 	}
 }
 
+// Context sets the context
+func Context(ctx context.Context) Option {
+	return func(o *Options) {
+		o.Context = ctx
+	}
+}
+
 // Specify TLS Config
 func TLSConfig(t *tls.Config) Option {
 	return func(o *Options) {
@@ -98,6 +168,12 @@ func TLSConfig(t *tls.Config) Option {
 	}
 }
 
+func RegisterAttempts(t int) RegisterOption {
+	return func(o *RegisterOptions) {
+		o.Attempts = t
+	}
+}
+
 func RegisterTTL(t time.Duration) RegisterOption {
 	return func(o *RegisterOptions) {
 		o.TTL = t
@@ -135,6 +211,12 @@ func WatchDomain(d string) WatchOption {
 	}
 }
 
+func DeregisterTimeout(t int) DeregisterOption {
+	return func(o *DeregisterOptions) {
+		o.Attempts = t
+	}
+}
+
 func DeregisterContext(ctx context.Context) DeregisterOption {
 	return func(o *DeregisterOptions) {
 		o.Context = ctx

registry/registry.go

@@ -2,6 +2,7 @@
 package registry
 
 import (
+	"context"
 	"errors"
 )
 
@@ -13,7 +14,8 @@ const (
 )
 
 var (
-	DefaultRegistry Registry = newRegistry()
+	// DefaultRegistry is the global default registry
+	DefaultRegistry Registry = NewRegistry()
 	// ErrNotFound returned when GetService is called and no services found
 	ErrNotFound = errors.New("service not found")
 	// ErrWatcherStopped returned when when watcher is stopped
@@ -26,11 +28,13 @@ var (
 type Registry interface {
 	Init(...Option) error
 	Options() Options
-	Register(*Service, ...RegisterOption) error
+	Connect(context.Context) error
-	Deregister(*Service, ...DeregisterOption) error
+	Disconnect(context.Context) error
-	GetService(string, ...GetOption) ([]*Service, error)
+	Register(context.Context, *Service, ...RegisterOption) error
-	ListServices(...ListOption) ([]*Service, error)
+	Deregister(context.Context, *Service, ...DeregisterOption) error
-	Watch(...WatchOption) (Watcher, error)
+	GetService(context.Context, string, ...GetOption) ([]*Service, error)
+	ListServices(context.Context, ...ListOption) ([]*Service, error)
+	Watch(context.Context, ...WatchOption) (Watcher, error)
 	String() string
 }
 

resolver/registry/registry.go

@@ -2,6 +2,8 @@
 package registry
 
 import (
+	"context"
+
 	"github.com/unistack-org/micro/v3/registry"
 	"github.com/unistack-org/micro/v3/resolver"
 )
@@ -14,7 +16,7 @@ type Resolver struct {
 
 // Resolve assumes ID is a domain name e.g micro.mu
 func (r *Resolver) Resolve(name string) ([]*resolver.Record, error) {
-	services, err := r.Registry.GetService(name)
+	services, err := r.Registry.GetService(context.TODO(), name)
 	if err != nil {
 		return nil, err
 	}

resolver/resolver.go

@@ -9,7 +9,7 @@ type Resolver interface {
 	Resolve(name string) ([]*Record, error)
 }
 
-// A resolved record
+// Record that resolved
 type Record struct {
 	Address  string `json:"address"`
 	Priority int64  `json:"priority"`

router/options.go

@@ -77,11 +77,17 @@ func Precache() Option {
 	}
 }
 
-// DefaultOptions returns router default options
+// NewOptions returns router default options
-func DefaultOptions() Options {
+func NewOptions(opts ...Option) Options {
-	return Options{
+	options := Options{
-		Id:      uuid.New().String(),
+		Id:       uuid.New().String(),
-		Network: DefaultNetwork,
+		Network:  DefaultNetwork,
-		Context: context.Background(),
+		Registry: registry.DefaultRegistry,
+		Logger:   logger.DefaultLogger,
+		Context:  context.Background(),
 	}
+	for _, o := range opts {
+		o(&options)
+	}
+	return options
 }

router/query.go

@@ -65,7 +65,7 @@ func QueryLink(link string) QueryOption {
 // NewQuery creates new query and returns it
 func NewQuery(opts ...QueryOption) QueryOptions {
 	// default options
-	qopts := QueryOptions{
+	options := QueryOptions{
 		Service: "*",
 		Address: "*",
 		Gateway: "*",
@@ -75,8 +75,8 @@ func NewQuery(opts ...QueryOption) QueryOptions {
 	}
 
 	for _, o := range opts {
-		o(&qopts)
+		o(&options)
 	}
 
-	return qopts
+	return options
 }

router/router.go

@@ -6,6 +6,7 @@ import (
 )
 
 var (
+	// DefaultRouter is the global default router
 	DefaultRouter Router
 	// DefaultNetwork is default micro network
 	DefaultNetwork = "micro"

runtime/runtime.go

@@ -7,6 +7,7 @@ import (
 )
 
 var (
+	// ErrAlreadyExists error
 	ErrAlreadyExists = errors.New("already exists")
 )
 

server/context.go

@@ -6,11 +6,33 @@ import (
 
 type serverKey struct{}
 
+// FromContext returns Server from context
 func FromContext(ctx context.Context) (Server, bool) {
 	c, ok := ctx.Value(serverKey{}).(Server)
 	return c, ok
 }
 
+// NewContext stores Server to context
 func NewContext(ctx context.Context, s Server) context.Context {
 	return context.WithValue(ctx, serverKey{}, s)
 }
+
+// Setoption returns a function to setup a context with given value
+func SetOption(k, v interface{}) Option {
+	return func(o *Options) {
+		if o.Context == nil {
+			o.Context = context.Background()
+		}
+		o.Context = context.WithValue(o.Context, k, v)
+	}
+}
+
+// SetSubscriberOption returns a function to setup a context with given value
+func SetSubscriberOption(k, v interface{}) SubscriberOption {
+	return func(o *SubscriberOptions) {
+		if o.Context == nil {
+			o.Context = context.Background()
+		}
+		o.Context = context.WithValue(o.Context, k, v)
+	}
+}

server/handler.go

@@ -1,80 +1,59 @@
 package server
 
-import "context"
+import (
+	"reflect"
 
-type HandlerOption func(*HandlerOptions)
+	"github.com/unistack-org/micro/v3/registry"
+)
 
-type HandlerOptions struct {
+type rpcHandler struct {
-	Internal bool
+	name      string
-	Metadata map[string]map[string]string
+	handler   interface{}
+	endpoints []*registry.Endpoint
+	opts      HandlerOptions
 }
 
-type SubscriberOption func(*SubscriberOptions)
+func newRpcHandler(handler interface{}, opts ...HandlerOption) Handler {
+	options := NewHandlerOptions(opts...)
 
-type SubscriberOptions struct {
+	typ := reflect.TypeOf(handler)
-	// AutoAck defaults to true. When a handler returns
+	hdlr := reflect.ValueOf(handler)
-	// with a nil error the message is acked.
+	name := reflect.Indirect(hdlr).Type().Name()
-	AutoAck  bool
-	Queue    string
-	Internal bool
-	Context  context.Context
-}
 
-// EndpointMetadata is a Handler option that allows metadata to be added to
+	var endpoints []*registry.Endpoint
-// individual endpoints.
+
-func EndpointMetadata(name string, md map[string]string) HandlerOption {
+	for m := 0; m < typ.NumMethod(); m++ {
-	return func(o *HandlerOptions) {
+		if e := registry.ExtractEndpoint(typ.Method(m)); e != nil {
-		o.Metadata[name] = md
+			e.Name = name + "." + e.Name
+
+			for k, v := range options.Metadata[e.Name] {
+				e.Metadata[k] = v
+			}
+
+			endpoints = append(endpoints, e)
+		}
+	}
+
+	return &rpcHandler{
+		name:      name,
+		handler:   handler,
+		endpoints: endpoints,
+		opts:      options,
 	}
 }
 
-// Internal Handler options specifies that a handler is not advertised
+func (r *rpcHandler) Name() string {
-// to the discovery system. In the future this may also limit request
+	return r.name
-// to the internal network or authorised user.
-func InternalHandler(b bool) HandlerOption {
-	return func(o *HandlerOptions) {
-		o.Internal = b
-	}
 }
 
-// Internal Subscriber options specifies that a subscriber is not advertised
+func (r *rpcHandler) Handler() interface{} {
-// to the discovery system.
+	return r.handler
-func InternalSubscriber(b bool) SubscriberOption {
-	return func(o *SubscriberOptions) {
-		o.Internal = b
-	}
-}
-func NewSubscriberOptions(opts ...SubscriberOption) SubscriberOptions {
-	opt := SubscriberOptions{
-		AutoAck: true,
-		Context: context.Background(),
-	}
-
-	for _, o := range opts {
-		o(&opt)
-	}
-
-	return opt
 }
 
-// DisableAutoAck will disable auto acking of messages
+func (r *rpcHandler) Endpoints() []*registry.Endpoint {
-// after they have been handled.
+	return r.endpoints
-func DisableAutoAck() SubscriberOption {
-	return func(o *SubscriberOptions) {
-		o.AutoAck = false
-	}
 }
 
-// Shared queue name distributed messages across subscribers
+func (r *rpcHandler) Options() HandlerOptions {
-func SubscriberQueue(n string) SubscriberOption {
+	return r.opts
-	return func(o *SubscriberOptions) {
-		o.Queue = n
-	}
-}
-
-// SubscriberContext set context options to allow broker SubscriberOption passed
-func SubscriberContext(ctx context.Context) SubscriberOption {
-	return func(o *SubscriberOptions) {
-		o.Context = ctx
-	}
 }

server/noop.go

@@ -0,0 +1,456 @@
+package server
+
+import (
+	"bytes"
+	"fmt"
+	"sort"
+	"sync"
+	"time"
+
+	craw "github.com/unistack-org/micro-codec-bytes"
+	cjson "github.com/unistack-org/micro-codec-json"
+	cjsonrpc "github.com/unistack-org/micro-codec-jsonrpc"
+	cproto "github.com/unistack-org/micro-codec-proto"
+	cprotorpc "github.com/unistack-org/micro-codec-protorpc"
+	"github.com/unistack-org/micro/v3/broker"
+	"github.com/unistack-org/micro/v3/codec"
+	"github.com/unistack-org/micro/v3/logger"
+	"github.com/unistack-org/micro/v3/registry"
+)
+
+var (
+	DefaultCodecs = map[string]codec.NewCodec{
+		"application/json":         cjson.NewCodec,
+		"application/json-rpc":     cjsonrpc.NewCodec,
+		"application/protobuf":     cproto.NewCodec,
+		"application/proto-rpc":    cprotorpc.NewCodec,
+		"application/octet-stream": craw.NewCodec,
+	}
+)
+
+const (
+	defaultContentType = "application/json"
+)
+
+type noopServer struct {
+	h           Handler
+	opts        Options
+	rsvc        *registry.Service
+	handlers    map[string]Handler
+	subscribers map[*subscriber][]broker.Subscriber
+	registered  bool
+	started     bool
+	exit        chan chan error
+	wg          *sync.WaitGroup
+	sync.RWMutex
+}
+
+// NewServer returns new noop server
+func NewServer(opts ...Option) Server {
+	return &noopServer{opts: NewOptions(opts...)}
+}
+
+func (n *noopServer) newCodec(contentType string) (codec.NewCodec, error) {
+	if cf, ok := n.opts.Codecs[contentType]; ok {
+		return cf, nil
+	}
+	if cf, ok := DefaultCodecs[contentType]; ok {
+		return cf, nil
+	}
+	return nil, fmt.Errorf("Unsupported Content-Type: %s", contentType)
+}
+
+func (n *noopServer) Handle(handler Handler) error {
+	n.h = handler
+	return nil
+}
+
+func (n *noopServer) Subscribe(sb Subscriber) error {
+	sub, ok := sb.(*subscriber)
+	if !ok {
+		return fmt.Errorf("invalid subscriber: expected *subscriber")
+	}
+	if len(sub.handlers) == 0 {
+		return fmt.Errorf("invalid subscriber: no handler functions")
+	}
+
+	if err := ValidateSubscriber(sb); err != nil {
+		return err
+	}
+
+	n.Lock()
+	if _, ok = n.subscribers[sub]; ok {
+		n.Unlock()
+		return fmt.Errorf("subscriber %v already exists", sub)
+	}
+
+	n.subscribers[sub] = nil
+	n.Unlock()
+	return nil
+}
+
+func (n *noopServer) NewHandler(h interface{}, opts ...HandlerOption) Handler {
+	return newRpcHandler(h, opts...)
+}
+
+func (n *noopServer) NewSubscriber(topic string, sb interface{}, opts ...SubscriberOption) Subscriber {
+	return newSubscriber(topic, sb, opts...)
+}
+
+func (n *noopServer) Init(opts ...Option) error {
+	for _, o := range opts {
+		o(&n.opts)
+	}
+
+	if n.handlers == nil {
+		n.handlers = make(map[string]Handler)
+	}
+	if n.subscribers == nil {
+		n.subscribers = make(map[*subscriber][]broker.Subscriber)
+	}
+	if n.exit == nil {
+		n.exit = make(chan chan error)
+	}
+
+	return nil
+}
+
+func (n *noopServer) Options() Options {
+	return n.opts
+}
+
+func (n *noopServer) String() string {
+	return "noop"
+}
+
+func (n *noopServer) Register() error {
+	n.RLock()
+	rsvc := n.rsvc
+	config := n.opts
+	n.RUnlock()
+
+	// if service already filled, reuse it and return early
+	if rsvc != nil {
+		if err := DefaultRegisterFunc(rsvc, config); err != nil {
+			return err
+		}
+		return nil
+	}
+
+	var err error
+	var service *registry.Service
+	var cacheService bool
+
+	service, err = NewRegistryService(n)
+	if err != nil {
+		return err
+	}
+
+	n.RLock()
+	// Maps are ordered randomly, sort the keys for consistency
+	var handlerList []string
+	for n, e := range n.handlers {
+		// Only advertise non internal handlers
+		if !e.Options().Internal {
+			handlerList = append(handlerList, n)
+		}
+	}
+
+	sort.Strings(handlerList)
+
+	var subscriberList []*subscriber
+	for e := range n.subscribers {
+		// Only advertise non internal subscribers
+		if !e.Options().Internal {
+			subscriberList = append(subscriberList, e)
+		}
+	}
+	sort.Slice(subscriberList, func(i, j int) bool {
+		return subscriberList[i].topic > subscriberList[j].topic
+	})
+
+	endpoints := make([]*registry.Endpoint, 0, len(handlerList)+len(subscriberList))
+	for _, h := range handlerList {
+		endpoints = append(endpoints, n.handlers[h].Endpoints()...)
+	}
+	for _, e := range subscriberList {
+		endpoints = append(endpoints, e.Endpoints()...)
+	}
+	n.RUnlock()
+
+	service.Nodes[0].Metadata["protocol"] = "noop"
+	service.Nodes[0].Metadata["transport"] = "noop"
+	service.Endpoints = endpoints
+
+	n.RLock()
+	registered := n.registered
+	n.RUnlock()
+
+	if !registered {
+		if config.Logger.V(logger.InfoLevel) {
+			config.Logger.Info("Registry [%s] Registering node: %s", config.Registry.String(), service.Nodes[0].Id)
+		}
+	}
+
+	// register the service
+	if err := DefaultRegisterFunc(service, config); err != nil {
+		return err
+	}
+
+	// already registered? don't need to register subscribers
+	if registered {
+		return nil
+	}
+
+	n.Lock()
+	defer n.Unlock()
+
+	cx := config.Context
+
+	for sb := range n.subscribers {
+		handler := n.createSubHandler(sb, config)
+		var opts []broker.SubscribeOption
+		if queue := sb.Options().Queue; len(queue) > 0 {
+			opts = append(opts, broker.SubscribeGroup(queue))
+		}
+
+		if sb.Options().Context != nil {
+			cx = sb.Options().Context
+		}
+
+		opts = append(opts, broker.SubscribeContext(cx), broker.SubscribeAutoAck(sb.Options().AutoAck))
+
+		if config.Logger.V(logger.InfoLevel) {
+			config.Logger.Info("Subscribing to topic: %s", sb.Topic())
+		}
+		sub, err := config.Broker.Subscribe(cx, sb.Topic(), handler, opts...)
+		if err != nil {
+			return err
+		}
+		n.subscribers[sb] = []broker.Subscriber{sub}
+	}
+
+	n.registered = true
+	if cacheService {
+		n.rsvc = service
+	}
+
+	return nil
+}
+
+func (n *noopServer) Deregister() error {
+	var err error
+
+	n.RLock()
+	config := n.opts
+	n.RUnlock()
+
+	service, err := NewRegistryService(n)
+	if err != nil {
+		return err
+	}
+
+	if config.Logger.V(logger.InfoLevel) {
+		config.Logger.Info("deregistering node: %s", service.Nodes[0].Id)
+	}
+
+	if err := DefaultDeregisterFunc(service, config); err != nil {
+		return err
+	}
+
+	n.Lock()
+	n.rsvc = nil
+
+	if !n.registered {
+		n.Unlock()
+		return nil
+	}
+
+	n.registered = false
+
+	cx := config.Context
+
+	wg := sync.WaitGroup{}
+	for sb, subs := range n.subscribers {
+		for _, sub := range subs {
+			if sb.Options().Context != nil {
+				cx = sb.Options().Context
+			}
+
+			wg.Add(1)
+			go func(s broker.Subscriber) {
+				defer wg.Done()
+				if config.Logger.V(logger.InfoLevel) {
+					config.Logger.Info("unsubscribing from topic: %s", s.Topic())
+				}
+				if err := s.Unsubscribe(cx); err != nil {
+					if config.Logger.V(logger.ErrorLevel) {
+						config.Logger.Error("unsubscribing from topic: %s err: %v", s.Topic(), err)
+					}
+				}
+			}(sub)
+		}
+		n.subscribers[sb] = nil
+	}
+	wg.Wait()
+
+	n.Unlock()
+	return nil
+}
+
+func (n *noopServer) Start() error {
+	n.RLock()
+	if n.started {
+		n.RUnlock()
+		return nil
+	}
+	config := n.Options()
+	n.RUnlock()
+
+	if config.Logger.V(logger.InfoLevel) {
+		config.Logger.Info("Server [noop] Listening on %s", config.Address)
+	}
+	n.Lock()
+	if len(config.Advertise) == 0 {
+		config.Advertise = config.Address
+	}
+	n.Unlock()
+
+	// only connect if we're subscribed
+	if len(n.subscribers) > 0 {
+		// connect to the broker
+		if err := config.Broker.Connect(config.Context); err != nil {
+			if config.Logger.V(logger.ErrorLevel) {
+				config.Logger.Error("Broker [%s] connect error: %v", config.Broker.String(), err)
+			}
+			return err
+		}
+
+		if config.Logger.V(logger.InfoLevel) {
+			config.Logger.Info("Broker [%s] Connected to %s", config.Broker.String(), config.Broker.Address())
+		}
+	}
+
+	// use RegisterCheck func before register
+	if err := config.RegisterCheck(config.Context); err != nil {
+		if config.Logger.V(logger.ErrorLevel) {
+			config.Logger.Error("Server %s-%s register check error: %s", config.Name, config.Id, err)
+		}
+	} else {
+		// announce self to the world
+		if err := n.Register(); err != nil {
+			if config.Logger.V(logger.ErrorLevel) {
+				config.Logger.Error("Server register error: %v", err)
+			}
+		}
+	}
+
+	go func() {
+		t := new(time.Ticker)
+
+		// only process if it exists
+		if config.RegisterInterval > time.Duration(0) {
+			// new ticker
+			t = time.NewTicker(config.RegisterInterval)
+		}
+
+		// return error chan
+		var ch chan error
+
+	Loop:
+		for {
+			select {
+			// register self on interval
+			case <-t.C:
+				n.RLock()
+				registered := n.registered
+				n.RUnlock()
+				rerr := config.RegisterCheck(config.Context)
+				if rerr != nil && registered {
+					if config.Logger.V(logger.ErrorLevel) {
+						config.Logger.Error("Server %s-%s register check error: %s, deregister it", config.Name, config.Id, rerr)
+					}
+					// deregister self in case of error
+					if err := n.Deregister(); err != nil {
+						if config.Logger.V(logger.ErrorLevel) {
+							config.Logger.Error("Server %s-%s deregister error: %s", config.Name, config.Id, err)
+						}
+					}
+				} else if rerr != nil && !registered {
+					if config.Logger.V(logger.ErrorLevel) {
+						config.Logger.Error("Server %s-%s register check error: %s", config.Name, config.Id, rerr)
+					}
+					continue
+				}
+				if err := n.Register(); err != nil {
+					if config.Logger.V(logger.ErrorLevel) {
+						config.Logger.Error("Server %s-%s register error: %s", config.Name, config.Id, err)
+					}
+				}
+			// wait for exit
+			case ch = <-n.exit:
+				break Loop
+			}
+		}
+
+		// deregister self
+		if err := n.Deregister(); err != nil {
+			if config.Logger.V(logger.ErrorLevel) {
+				config.Logger.Error("Server deregister error: ", err)
+			}
+		}
+
+		// wait for waitgroup
+		if n.wg != nil {
+			n.wg.Wait()
+		}
+
+		// close transport
+		ch <- nil
+
+		if config.Logger.V(logger.InfoLevel) {
+			config.Logger.Info("Broker [%s] Disconnected from %s", config.Broker.String(), config.Broker.Address())
+		}
+		// disconnect broker
+		if err := config.Broker.Disconnect(config.Context); err != nil {
+			if config.Logger.V(logger.ErrorLevel) {
+				config.Logger.Error("Broker [%s] disconnect error: %v", config.Broker.String(), err)
+			}
+		}
+	}()
+
+	// mark the server as started
+	n.Lock()
+	n.started = true
+	n.Unlock()
+
+	return nil
+}
+
+func (n *noopServer) Stop() error {
+	n.RLock()
+	if !n.started {
+		n.RUnlock()
+		return nil
+	}
+	n.RUnlock()
+
+	ch := make(chan error)
+	n.exit <- ch
+
+	err := <-ch
+	n.Lock()
+	n.rsvc = nil
+	n.started = false
+	n.Unlock()
+
+	return err
+}
+
+type noopcodec struct {
+	*bytes.Buffer
+}
+
+func (c noopcodec) Close() error {
+	return nil
+}

server/options.go

@@ -9,17 +9,18 @@ import (
 	"github.com/unistack-org/micro/v3/auth"
 	"github.com/unistack-org/micro/v3/broker"
 	"github.com/unistack-org/micro/v3/codec"
-	"github.com/unistack-org/micro/v3/debug/trace"
 	"github.com/unistack-org/micro/v3/logger"
+	"github.com/unistack-org/micro/v3/network/transport"
 	"github.com/unistack-org/micro/v3/registry"
-	"github.com/unistack-org/micro/v3/transport"
+	"github.com/unistack-org/micro/v3/tracer"
 )
 
+// Options server struct
 type Options struct {
 	Codecs       map[string]codec.NewCodec
 	Broker       broker.Broker
 	Registry     registry.Registry
-	Tracer       trace.Tracer
+	Tracer       tracer.Tracer
 	Auth         auth.Auth
 	Logger       logger.Logger
 	Transport    transport.Transport
@@ -39,6 +40,10 @@ type Options struct {
 	RegisterTTL time.Duration
 	// The interval on which to register
 	RegisterInterval time.Duration
+	// RegisterAttempts specify how many times try to register
+	RegisterAttempts int
+	// DeegisterAttempts specify how many times try to deregister
+	DeregisterAttempts int
 
 	// The router for requests
 	Router Router
@@ -46,47 +51,42 @@ type Options struct {
 	// TLSConfig specifies tls.Config for secure serving
 	TLSConfig *tls.Config
 
+	Wait *sync.WaitGroup
 	// Other options for implementations of the interface
 	// can be stored in a context
 	Context context.Context
 }
 
-func newOptions(opt ...Option) Options {
+// NewOptions returns new options struct with default or passed values
-	opts := Options{
+func NewOptions(opts ...Option) Options {
+	options := Options{
+		Auth:             auth.DefaultAuth,
 		Codecs:           make(map[string]codec.NewCodec),
+		Context:          context.Background(),
 		Metadata:         map[string]string{},
 		RegisterInterval: DefaultRegisterInterval,
 		RegisterTTL:      DefaultRegisterTTL,
+		RegisterCheck:    DefaultRegisterCheck,
+		Logger:           logger.DefaultLogger,
+		Tracer:           tracer.DefaultTracer,
+		Broker:           broker.DefaultBroker,
+		Registry:         registry.DefaultRegistry,
+		Transport:        transport.DefaultTransport,
+		Address:          DefaultAddress,
+		Name:             DefaultName,
+		Version:          DefaultVersion,
+		Id:               DefaultId,
+		Namespace:        DefaultNamespace,
 	}
 
-	for _, o := range opt {
+	for _, o := range opts {
-		o(&opts)
+		o(&options)
 	}
 
-	if opts.RegisterCheck == nil {
+	return options
-		opts.RegisterCheck = DefaultRegisterCheck
-	}
-
-	if len(opts.Address) == 0 {
-		opts.Address = DefaultAddress
-	}
-
-	if len(opts.Name) == 0 {
-		opts.Name = DefaultName
-	}
-
-	if len(opts.Id) == 0 {
-		opts.Id = DefaultId
-	}
-
-	if len(opts.Version) == 0 {
-		opts.Version = DefaultVersion
-	}
-
-	return opts
 }
 
-// Server name
+// Name sets the server name option
 func Name(n string) Option {
 	return func(o *Options) {
 		o.Name = n
@@ -100,14 +100,14 @@ func Namespace(n string) Option {
 	}
 }
 
-// Logger
+// Logger sets the logger option
 func Logger(l logger.Logger) Option {
 	return func(o *Options) {
 		o.Logger = l
 	}
 }
 
-// Unique server id
+// Id unique server id
 func Id(id string) Option {
 	return func(o *Options) {
 		o.Id = id
@@ -128,7 +128,7 @@ func Address(a string) Option {
 	}
 }
 
-// The address to advertise for discovery - host:port
+// Advertise the address to advertise for discovery - host:port
 func Advertise(a string) Option {
 	return func(o *Options) {
 		o.Advertise = a
@@ -166,7 +166,7 @@ func Registry(r registry.Registry) Option {
 }
 
 // Tracer mechanism for distributed tracking
-func Tracer(t trace.Tracer) Option {
+func Tracer(t tracer.Tracer) Option {
 	return func(o *Options) {
 		o.Tracer = t
 	}
@@ -200,14 +200,14 @@ func RegisterCheck(fn func(context.Context) error) Option {
 	}
 }
 
-// Register the service with a TTL
+// RegisterTTL registers service with a TTL
 func RegisterTTL(t time.Duration) Option {
 	return func(o *Options) {
 		o.RegisterTTL = t
 	}
 }
 
-// Register the service with at interval
+// RegisterInterval registers service with at interval
 func RegisterInterval(t time.Duration) Option {
 	return func(o *Options) {
 		o.RegisterInterval = t
@@ -244,26 +244,120 @@ func WithRouter(r Router) Option {
 // wait against it on stop.
 func Wait(wg *sync.WaitGroup) Option {
 	return func(o *Options) {
-		if o.Context == nil {
-			o.Context = context.Background()
-		}
 		if wg == nil {
 			wg = new(sync.WaitGroup)
 		}
-		o.Context = context.WithValue(o.Context, "wait", wg)
+		o.Wait = wg
 	}
 }
 
-// Adds a handler Wrapper to a list of options passed into the server
+// WrapHandler adds a handler Wrapper to a list of options passed into the server
 func WrapHandler(w HandlerWrapper) Option {
 	return func(o *Options) {
 		o.HdlrWrappers = append(o.HdlrWrappers, w)
 	}
 }
 
-// Adds a subscriber Wrapper to a list of options passed into the server
+// WrapSubscriber adds a subscriber Wrapper to a list of options passed into the server
 func WrapSubscriber(w SubscriberWrapper) Option {
 	return func(o *Options) {
 		o.SubWrappers = append(o.SubWrappers, w)
 	}
 }
+
+// HandlerOption func
+type HandlerOption func(*HandlerOptions)
+
+// HandlerOptions struct
+type HandlerOptions struct {
+	Internal bool
+	Metadata map[string]map[string]string
+	Context  context.Context
+}
+
+// NewHandlerOptions creates new HandlerOptions
+func NewHandlerOptions(opts ...HandlerOption) HandlerOptions {
+	options := HandlerOptions{
+		Context: context.Background(),
+	}
+
+	for _, o := range opts {
+		o(&options)
+	}
+
+	return options
+}
+
+// SubscriberOption func
+type SubscriberOption func(*SubscriberOptions)
+
+// SubscriberOptions struct
+type SubscriberOptions struct {
+	// AutoAck defaults to true. When a handler returns
+	// with a nil error the message is acked.
+	AutoAck  bool
+	Queue    string
+	Internal bool
+	Context  context.Context
+}
+
+// NewSubscriberOptions create new SubscriberOptions
+func NewSubscriberOptions(opts ...SubscriberOption) SubscriberOptions {
+	options := SubscriberOptions{
+		AutoAck: true,
+		Context: context.Background(),
+	}
+
+	for _, o := range opts {
+		o(&options)
+	}
+
+	return options
+}
+
+// EndpointMetadata is a Handler option that allows metadata to be added to
+// individual endpoints.
+func EndpointMetadata(name string, md map[string]string) HandlerOption {
+	return func(o *HandlerOptions) {
+		o.Metadata[name] = md
+	}
+}
+
+// InternalHandler options specifies that a handler is not advertised
+// to the discovery system. In the future this may also limit request
+// to the internal network or authorised user.
+func InternalHandler(b bool) HandlerOption {
+	return func(o *HandlerOptions) {
+		o.Internal = b
+	}
+}
+
+// InternalSubscriber options specifies that a subscriber is not advertised
+// to the discovery system.
+func InternalSubscriber(b bool) SubscriberOption {
+	return func(o *SubscriberOptions) {
+		o.Internal = b
+	}
+}
+
+// DisableAutoAck will disable auto acking of messages
+// after they have been handled.
+func DisableAutoAck() SubscriberOption {
+	return func(o *SubscriberOptions) {
+		o.AutoAck = false
+	}
+}
+
+// SubscriberQueue sets the shared queue name distributed messages across subscribers
+func SubscriberQueue(n string) SubscriberOption {
+	return func(o *SubscriberOptions) {
+		o.Queue = n
+	}
+}
+
+// SubscriberContext set context options to allow broker SubscriberOption passed
+func SubscriberContext(ctx context.Context) SubscriberOption {
+	return func(o *SubscriberOptions) {
+		o.Context = ctx
+	}
+}