fix module name

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

.github/ISSUE_TEMPLATE/bug_report.md

@@ -0,0 +1,24 @@
+---
+name: Bug report
+about: For reporting bugs in go-micro
+title: "[BUG]"
+labels: ''
+assignees: ''
+
+---
+
+**Describe the bug**
+
+1. What are you trying to do?
+2. What did you expect to happen?
+3. What happens instead?
+
+**How to reproduce the bug:**
+
+If possible, please include a minimal code snippet here.
+
+**Environment:**
+Go Version: please paste `go version` output here
+```
+please paste `go env` output here
+```

.github/ISSUE_TEMPLATE/feature-request---enhancement.md

@@ -0,0 +1,17 @@
+---
+name: Feature request / Enhancement
+about: If you have a need not served by go-micro
+title: "[FEATURE]"
+labels: ''
+assignees: ''
+
+---
+
+**Is your feature request related to a problem? Please describe.**
+A clear and concise description of what the problem is. Ex. I'm always frustrated when [...]
+
+**Describe the solution you'd like**
+A clear and concise description of what you want to happen.
+
+**Additional context**
+Add any other context or screenshots about the feature request here.

.github/ISSUE_TEMPLATE/question.md

@@ -0,0 +1,14 @@
+---
+name: Question
+about: Ask a question about go-micro
+title: ''
+labels: ''
+assignees: ''
+
+---
+
+Before asking, please check if your question has already been answered: 
+
+1. Check the documentation - https://micro.mu/docs/
+2. Check the examples and plugins - https://github.com/micro/examples & https://github.com/micro/go-plugins
+3. Search existing issues

.github/PULL_REQUEST_TEMPLATE.md

@@ -0,0 +1,9 @@
+## Pull Request template
+Please, go through these steps before clicking submit on this PR.
+
+1. Give a descriptive title to your PR.
+2. Provide a description of your changes.
+3. Make sure you have some relevant tests.
+4. Put `closes #XXXX` in your comment to auto-close the issue that your PR fixes (if applicable).
+
+**PLEASE REMOVE THIS TEMPLATE BEFORE SUBMITTING**

.github/stale.sh

@@ -0,0 +1,13 @@
+#!/bin/bash -ex
+
+export PATH=$PATH:$(pwd)/bin
+export GO111MODULE=on
+export GOBIN=$(pwd)/bin
+
+#go get github.com/rvflash/goup@v0.4.1
+
+#goup -v ./...
+#go get github.com/psampaz/go-mod-outdated@v0.6.0
+go list -u -m -mod=mod -json all | go-mod-outdated -update -direct -ci || true
+
+#go list -u -m -json all | go-mod-outdated -update

.github/workflows/build.yml

@@ -0,0 +1,46 @@
+name: build
+on:
+ push:
+    branches:
+    - master
+jobs:
+  test:
+    name: test
+    runs-on: ubuntu-latest
+    steps:
+    - name: setup
+      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
+      run: go get -v -t -d ./...
+    - name: test
+      env:
+        INTEGRATION_TESTS: yes
+      run: go test -mod readonly -v ./...
+  lint:
+    name: lint
+    runs-on: ubuntu-latest
+    steps:
+      - name: checkout
+        uses: actions/checkout@v2
+      - name: lint
+        uses: golangci/golangci-lint-action@v1
+        continue-on-error: true
+        with:
+          # Required: the version of golangci-lint is required and must be specified without patch version: we always use the latest patch version.
+          version: v1.30
+          # Optional: working directory, useful for monorepos
+          # working-directory: somedir
+          # Optional: golangci-lint command line arguments.
+          # args: --issues-exit-code=0
+          # Optional: show only new issues if it's a pull request. The default value is `false`.
+          # only-new-issues: true

.github/workflows/pr.yml

@@ -0,0 +1,46 @@
+name: prbuild
+on:
+  pull_request:
+    branches:
+    - master
+jobs:
+  test:
+    name: test
+    runs-on: ubuntu-latest
+    steps:
+    - name: setup
+      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
+      run: go get -v -t -d ./...
+    - name: test
+      env:
+        INTEGRATION_TESTS: yes
+      run: go test -mod readonly -v ./...
+  lint:
+    name: lint
+    runs-on: ubuntu-latest
+    steps:
+      - name: checkout
+        uses: actions/checkout@v2
+      - name: lint
+        uses: golangci/golangci-lint-action@v1
+        continue-on-error: true
+        with:
+          # Required: the version of golangci-lint is required and must be specified without patch version: we always use the latest patch version.
+          version: v1.30
+          # Optional: working directory, useful for monorepos
+          # working-directory: somedir
+          # Optional: golangci-lint command line arguments.
+          # args: --issues-exit-code=0
+          # Optional: show only new issues if it's a pull request. The default value is `false`.
+          # only-new-issues: true

.synced

@@ -0,0 +1 @@
+0a6e451539fd046bbfea625b05ef2e3006c69214

LICENSE

@@ -0,0 +1,191 @@
+
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+          that such additional attribution notices cannot be construed
+          as modifying the License.
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+      You may add Your own copyright statement to Your modifications and
+      may provide additional or different license terms and conditions
+      for use, reproduction, or distribution of Your modifications, or
+      for any such Derivative Works as a whole, provided Your use,
+      reproduction, and distribution of the Work otherwise complies with
+      the conditions stated in this License.
+
+   5. Submission of Contributions. Unless You explicitly state otherwise,
+      any Contribution intentionally submitted for inclusion in the Work
+      by You to the Licensor shall be under the terms and conditions of
+      this License, without any additional terms or conditions.
+      Notwithstanding the above, nothing herein shall supersede or modify
+      the terms of any separate license agreement you may have executed
+      with Licensor regarding such Contributions.
+
+   6. Trademarks. This License does not grant permission to use the trade
+      names, trademarks, service marks, or product names of the Licensor,
+      except as required for reasonable and customary use in describing the
+      origin of the Work and reproducing the content of the NOTICE file.
+
+   7. Disclaimer of Warranty. Unless required by applicable law or
+      agreed to in writing, Licensor provides the Work (and each
+      Contributor provides its Contributions) on an "AS IS" BASIS,
+      WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
+      implied, including, without limitation, any warranties or conditions
+      of TITLE, NON-INFRINGEMENT, MERCHANTABILITY, or FITNESS FOR A
+      PARTICULAR PURPOSE. You are solely responsible for determining the
+      appropriateness of using or redistributing the Work and assume any
+      risks associated with Your exercise of permissions under this License.
+
+   8. Limitation of Liability. In no event and under no legal theory,
+      whether in tort (including negligence), contract, or otherwise,
+      unless required by applicable law (such as deliberate and grossly
+      negligent acts) or agreed to in writing, shall any Contributor be
+      liable to You for damages, including any direct, indirect, special,
+      incidental, or consequential damages of any character arising as a
+      result of this License or out of the use or inability to use the
+      Work (including but not limited to damages for loss of goodwill,
+      work stoppage, computer failure or malfunction, or any and all
+      other commercial damages or losses), even if such Contributor
+      has been advised of the possibility of such damages.
+
+   9. Accepting Warranty or Additional Liability. While redistributing
+      the Work or Derivative Works thereof, You may choose to offer,
+      and charge a fee for, acceptance of support, warranty, indemnity,
+      or other liability obligations and/or rights consistent with this
+      License. However, in accepting such obligations, You may act only
+      on Your own behalf and on Your sole responsibility, not on behalf
+      of any other Contributor, and only if You agree to indemnify,
+      defend, and hold each Contributor harmless for any liability
+      incurred by, or claims asserted against, such Contributor by reason
+      of your accepting any such warranty or additional liability.
+
+   END OF TERMS AND CONDITIONS
+
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+   distributed under the License is distributed on an "AS IS" BASIS,
+   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+   See the License for the specific language governing permissions and
+   limitations under the License.

go.mod

@@ -0,0 +1,8 @@
+module github.com/unistack-org/micro-router-register/v3
+
+go 1.15
+
+require (
+	github.com/google/uuid v1.1.5
+	github.com/unistack-org/micro/v3 v3.2.2
+)

go.sum

@@ -0,0 +1,118 @@
+cloud.google.com/go v0.26.0/go.mod h1:aQUYkXzVsufM+DwF1aE+0xfcU+56JwCaLick0ClmMTw=
+github.com/BurntSushi/toml v0.3.1 h1:WXkYYl6Yr3qBf1K79EBnL4mak0OimBfB0XUf9Vl28OQ=
+github.com/BurntSushi/toml v0.3.1/go.mod h1:xHWCNGjB5oqiDr8zfno3MHue2Ht5sIBksp03qcyfWMU=
+github.com/census-instrumentation/opencensus-proto v0.2.1/go.mod h1:f6KPmirojxKA12rnyqOA5BBL4O983OfeGPqjHWSTneU=
+github.com/client9/misspell v0.3.4/go.mod h1:qj6jICC3Q7zFZvVWo7KLAzC3yx5G7kyvSDkc90ppPyw=
+github.com/creack/pty v1.1.9/go.mod h1:oKZEueFk5CKHvIhNR5MUki03XCEU+Q6VDXinZuGJ33E=
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registry.go

@@ -1,14 +1,13 @@
-package registry
+package register
 
 import (
 	"fmt"
-	"strings"
 	"sync"
 	"time"
 
-	"github.com/micro/go-micro/v3/logger"
+	"github.com/unistack-org/micro/v3/logger"
-	"github.com/micro/go-micro/v3/registry"
+	"github.com/unistack-org/micro/v3/register"
-	"github.com/micro/go-micro/v3/router"
+	"github.com/unistack-org/micro/v3/router"
 )
 
 var (
@@ -24,30 +23,24 @@ type rtr struct {
 
 	running  bool
 	table    *table
-	options  router.Options
+	opts     router.Options
 	exit     chan bool
 	initChan chan bool
 }
 
 // NewRouter creates new router and returns it
 func NewRouter(opts ...router.Option) router.Router {
-	// get default options
+	options := router.NewOptions(opts...)
-	options := router.DefaultOptions()
-
-	// apply requested options
-	for _, o := range opts {
-		o(&options)
-	}
 
 	// construct the router
 	r := &rtr{
-		options:  options,
+		opts:     options,
 		initChan: make(chan bool),
 	}
 
 	// create the new table, passing the fetchRoute method in as a fallback if
 	// the table doesn't contain the result for a query.
-	r.table = newTable()
+	r.table = newTable(r.lookup)
 
 	// start the router
 	r.start()
@@ -58,12 +51,16 @@ func NewRouter(opts ...router.Option) router.Router {
 func (r *rtr) Init(opts ...router.Option) error {
 	r.Lock()
 	for _, o := range opts {
-		o(&r.options)
+		o(&r.opts)
 	}
 	r.Unlock()
 
+	if r.opts.Register == nil {
+		return fmt.Errorf("register not set")
+	}
+
 	// push a message to the init chan so the watchers
-	// can reset in the case the registry was changed
+	// can reset in the case the register was changed
 	go func() {
 		r.initChan <- true
 	}()
@@ -76,7 +73,7 @@ func (r *rtr) Options() router.Options {
 	r.RLock()
 	defer r.RUnlock()
 
-	options := r.options
+	options := r.opts
 
 	return options
 }
@@ -88,9 +85,9 @@ func (r *rtr) Table() router.Table {
 	return r.table
 }
 
-func getDomain(srv *registry.Service) string {
+func getDomain(srv *register.Service) string {
 	// check the service metadata for domain
-	// TODO: domain as Domain field in registry?
+	// TODO: domain as Domain field in register?
 	if srv.Metadata != nil && len(srv.Metadata["domain"]) > 0 {
 		return srv.Metadata["domain"]
 	} else if len(srv.Nodes) > 0 && srv.Nodes[0].Metadata != nil {
@@ -99,7 +96,7 @@ func getDomain(srv *registry.Service) string {
 
 	// otherwise return wildcard
 	// TODO: return GlobalDomain or PublicDomain
-	return registry.DefaultDomain
+	return register.DefaultDomain
 }
 
 // manageRoute applies action on a given route
@@ -125,8 +122,8 @@ func (r *rtr) manageRoute(route router.Route, action string) error {
 }
 
 // createRoutes turns a service into a list routes basically converting nodes to routes
-func (r *rtr) createRoutes(service *registry.Service, network string) []router.Route {
+func (r *rtr) createRoutes(service *register.Service, network string) []router.Route {
-	var routes []router.Route
+	routes := make([]router.Route, 0, len(service.Nodes))
 
 	for _, node := range service.Nodes {
 		routes = append(routes, router.Route{
@@ -134,9 +131,9 @@ func (r *rtr) createRoutes(service *registry.Service, network string) []router.R
 			Address:  node.Address,
 			Gateway:  "",
 			Network:  network,
-			Router:   r.options.Id,
+			Router:   r.opts.Id,
 			Link:     router.DefaultLink,
-			Metric:   router.DefaultMetric,
+			Metric:   router.DefaultLocalMetric,
 			Metadata: node.Metadata,
 		})
 	}
@@ -146,10 +143,7 @@ func (r *rtr) createRoutes(service *registry.Service, network string) []router.R
 
 // manageServiceRoutes applies action to all routes of the service.
 // It returns error of the action fails with error.
-func (r *rtr) manageRoutes(service *registry.Service, action, network string) error {
+func (r *rtr) manageRoutes(service *register.Service, action, network string) error {
-	// action is the routing table action
-	action = strings.ToLower(action)
-
 	// create a set of routes from the service
 	routes := r.createRoutes(service, network)
 
@@ -164,7 +158,9 @@ func (r *rtr) manageRoutes(service *registry.Service, action, network string) er
 
 	// create the routes in the table
 	for _, route := range routes {
-		logger.Tracef("Creating route %v domain: %v", route, network)
+		if r.opts.Logger.V(logger.TraceLevel) {
+			r.opts.Logger.Tracef(r.opts.Context, "Creating route %v domain: %v", route, network)
+		}
 		if err := r.manageRoute(route, action); err != nil {
 			return err
 		}
@@ -173,10 +169,10 @@ func (r *rtr) manageRoutes(service *registry.Service, action, network string) er
 	return nil
 }
 
-// manageRegistryRoutes applies action to all routes of each service found in the registry.
+// manageRegisterRoutes applies action to all routes of each service found in the register.
 // It returns error if either the services failed to be listed or the routing table action fails.
-func (r *rtr) loadRoutes(reg registry.Registry) error {
+func (r *rtr) loadRoutes(reg register.Register) error {
-	services, err := reg.ListServices(registry.ListDomain(registry.WildcardDomain))
+	services, err := reg.ListServices(r.opts.Context, register.ListDomain(register.WildcardDomain))
 	if err != nil {
 		return fmt.Errorf("failed listing services: %v", err)
 	}
@@ -191,7 +187,9 @@ func (r *rtr) loadRoutes(reg registry.Registry) error {
 
 		// if the routes exist save them
 		if len(routes) > 0 {
-			logger.Tracef("Creating routes for service %v domain: %v", service, domain)
+			if r.opts.Logger.V(logger.TraceLevel) {
+				r.opts.Logger.Tracef(r.opts.Context, "Creating routes for service %v domain: %v", service, domain)
+			}
 			for _, rt := range routes {
 				err := r.table.Create(rt)
 
@@ -201,7 +199,9 @@ func (r *rtr) loadRoutes(reg registry.Registry) error {
 				}
 
 				if err != nil {
-					logger.Errorf("Error creating route for service %v in domain %v: %v", service, domain, err)
+					if r.opts.Logger.V(logger.ErrorLevel) {
+						r.opts.Logger.Errorf(r.opts.Context, "Error creating route for service %v in domain %v: %v", service, domain, err)
+					}
 				}
 			}
 			continue
@@ -210,9 +210,11 @@ func (r *rtr) loadRoutes(reg registry.Registry) error {
 		// otherwise get all the service info
 
 		// get the service to retrieve all its info
-		srvs, err := reg.GetService(service.Name, registry.GetDomain(domain))
+		srvs, err := reg.LookupService(r.opts.Context, service.Name, register.LookupDomain(domain))
 		if err != nil {
-			logger.Tracef("Failed to get service %s domain: %s", service.Name, domain)
+			if r.opts.Logger.V(logger.TraceLevel) {
+				r.opts.Logger.Tracef(r.opts.Context, "Failed to get service %s domain: %s", service.Name, domain)
+			}
 			continue
 		}
 
@@ -221,7 +223,9 @@ func (r *rtr) loadRoutes(reg registry.Registry) error {
 			routes := r.createRoutes(srv, domain)
 
 			if len(routes) > 0 {
-				logger.Tracef("Creating routes for service %v domain: %v", srv, domain)
+				if r.opts.Logger.V(logger.TraceLevel) {
+					r.opts.Logger.Tracef(r.opts.Context, "Creating routes for service %v domain: %v", srv, domain)
+				}
 				for _, rt := range routes {
 					err := r.table.Create(rt)
 
@@ -231,7 +235,9 @@ func (r *rtr) loadRoutes(reg registry.Registry) error {
 					}
 
 					if err != nil {
-						logger.Errorf("Error creating route for service %v in domain %v: %v", service, domain, err)
+						if r.opts.Logger.V(logger.ErrorLevel) {
+							r.opts.Logger.Errorf(r.opts.Context, "Error creating route for service %v in domain %v: %v", service, domain, err)
+						}
 					}
 				}
 			}
@@ -241,52 +247,27 @@ func (r *rtr) loadRoutes(reg registry.Registry) error {
 	return nil
 }
 
-// Close the router
-func (r *rtr) Close() error {
-	r.Lock()
-	defer r.Unlock()
-
-	select {
-	case <-r.exit:
-		return nil
-	default:
-		if !r.running {
-			return nil
-		}
-		close(r.exit)
-
-	}
-
-	r.running = false
-	return nil
-}
-
 // lookup retrieves all the routes for a given service and creates them in the routing table
-func (r *rtr) Lookup(service string, opts ...router.LookupOption) ([]router.Route, error) {
+func (r *rtr) lookup(service string) ([]router.Route, error) {
-	q := router.NewLookup(opts...)
+	if r.opts.Logger.V(logger.TraceLevel) {
-
+		r.opts.Logger.Tracef(r.opts.Context, "Fetching route for %s domain: %v", service, register.WildcardDomain)
-	// if we find the routes filter and return them
-	routes, err := r.table.Read(router.ReadService(service))
-	if err == nil {
-		routes = router.Filter(routes, q)
-		if len(routes) == 0 {
-			return nil, router.ErrRouteNotFound
-		}
-		return routes, nil
 	}
 
-	// lookup the route
+	services, err := r.opts.Register.LookupService(r.opts.Context, service, register.LookupDomain(register.WildcardDomain))
-	logger.Tracef("Fetching route for %s domain: %v", service, registry.WildcardDomain)
+	if err == register.ErrNotFound {
-
+		if r.opts.Logger.V(logger.TraceLevel) {
-	services, err := r.options.Registry.GetService(service, registry.GetDomain(registry.WildcardDomain))
+			r.opts.Logger.Tracef(r.opts.Context, "Failed to find route for %s", service)
-	if err == registry.ErrNotFound {
+		}
-		logger.Tracef("Failed to find route for %s", service)
 		return nil, router.ErrRouteNotFound
 	} else if err != nil {
-		logger.Tracef("Failed to find route for %s: %v", service, err)
+		if r.opts.Logger.V(logger.TraceLevel) {
+			r.opts.Logger.Tracef(r.opts.Context, "Failed to find route for %s: %v", service, err)
+		}
 		return nil, fmt.Errorf("failed getting services: %v", err)
 	}
 
+	var routes []router.Route
+
 	for _, srv := range services {
 		domain := getDomain(srv)
 		// TODO: should we continue to send the event indicating we created a route?
@@ -294,23 +275,12 @@ func (r *rtr) Lookup(service string, opts ...router.LookupOption) ([]router.Rout
 		routes = append(routes, r.createRoutes(srv, domain)...)
 	}
 
-	// if we're supposed to cache then save the routes
-	if r.options.Cache {
-		for _, route := range routes {
-			r.table.Create(route)
-		}
-	}
-
-	routes = router.Filter(routes, q)
-	if len(routes) == 0 {
-		return nil, router.ErrRouteNotFound
-	}
 	return routes, nil
 }
 
-// watchRegistry watches registry and updates routing table based on the received events.
+// watchRegister watches register and updates routing table based on the received events.
-// It returns error if either the registry watcher fails with error or if the routing table update fails.
+// It returns error if either the register watcher fails with error or if the routing table update fails.
-func (r *rtr) watchRegistry(w registry.Watcher) error {
+func (r *rtr) watchRegister(w register.Watcher) error {
 	exit := make(chan bool)
 
 	defer func() {
@@ -334,7 +304,7 @@ func (r *rtr) watchRegistry(w registry.Watcher) error {
 		// get the next service
 		res, err := w.Next()
 		if err != nil {
-			if err != registry.ErrWatcherStopped {
+			if err != register.ErrWatcherStopped {
 				return err
 			}
 			break
@@ -342,11 +312,15 @@ func (r *rtr) watchRegistry(w registry.Watcher) error {
 
 		// don't process nil entries
 		if res.Service == nil {
-			logger.Trace("Received a nil service")
+			if logger.V(logger.TraceLevel) {
+				logger.Trace(r.opts.Context, "Received a nil service")
+			}
 			continue
 		}
 
-		logger.Tracef("Router dealing with next route %s %+v\n", res.Action, res.Service)
+		if r.opts.Logger.V(logger.TraceLevel) {
+			r.opts.Logger.Tracef(r.opts.Context, "Router dealing with next route %s %+v\n", res.Action, res.Service)
+		}
 
 		// get the services domain from metadata. Fallback to wildcard.
 		domain := getDomain(res.Service)
@@ -366,17 +340,24 @@ func (r *rtr) start() error {
 		return nil
 	}
 
+	if r.opts.Precache {
+		// add all local service routes into the routing table
+		if err := r.loadRoutes(r.opts.Register); err != nil {
+			return fmt.Errorf("failed loading register routes: %s", err)
+		}
+	}
+
 	// add default gateway into routing table
-	if r.options.Gateway != "" {
+	if r.opts.Gateway != "" {
 		// note, the only non-default value is the gateway
 		route := router.Route{
 			Service: "*",
 			Address: "*",
-			Gateway: r.options.Gateway,
+			Gateway: r.opts.Gateway,
 			Network: "*",
-			Router:  r.options.Id,
+			Router:  r.opts.Id,
 			Link:    router.DefaultLink,
-			Metric:  router.DefaultMetric,
+			Metric:  router.DefaultLocalMetric,
 		}
 		if err := r.table.Create(route); err != nil {
 			return fmt.Errorf("failed adding default gateway route: %s", err)
@@ -385,59 +366,27 @@ func (r *rtr) start() error {
 
 	// create error and exit channels
 	r.exit = make(chan bool)
-	r.running = true
 
-	// only cache if told to do so
+	// periodically refresh all the routes
-	if !r.options.Cache {
-		return nil
-	}
-
-	// create a refresh notify channel
-	refresh := make(chan bool, 1)
-
-	// fires the refresh for loading routes
-	refreshRoutes := func() {
-		select {
-		case refresh <- true:
-		default:
-		}
-	}
-
-	// refresh all the routes in the event of a failure watching the registry
 	go func() {
-		var lastRefresh time.Time
+		t1 := time.NewTicker(RefreshInterval)
+		defer t1.Stop()
 
-		// load a refresh
+		t2 := time.NewTicker(PruneInterval)
-		refreshRoutes()
+		defer t2.Stop()
 
 		for {
 			select {
 			case <-r.exit:
 				return
-			case <-refresh:
+			case <-t2.C:
-				// don't refresh if we've done so in the past minute
+				r.table.pruneRoutes(RefreshInterval)
-				if !lastRefresh.IsZero() && time.Since(lastRefresh) < time.Minute {
+			case <-t1.C:
-					continue
+				if err := r.loadRoutes(r.opts.Register); err != nil {
+					if r.opts.Logger.V(logger.DebugLevel) {
+						r.opts.Logger.Debugf(r.opts.Context, "failed refreshing register routes: %s", err)
+					}
 				}
-
-				// load new routes
-				if err := r.loadRoutes(r.options.Registry); err != nil {
-					logger.Debugf("failed refreshing registry routes: %s", err)
-					// in this don't prune
-					continue
-				}
-
-				// first time so nothing to prune
-				if !lastRefresh.IsZero() {
-					// prune any routes since last refresh since we've
-					// updated basically everything we care about
-					r.table.pruneRoutes(time.Since(lastRefresh))
-				}
-
-				// update the refresh time
-				lastRefresh = time.Now()
-			case <-time.After(RefreshInterval):
-				refreshRoutes()
 			}
 		}
 	}()
@@ -448,40 +397,69 @@ func (r *rtr) start() error {
 			case <-r.exit:
 				return
 			default:
-				logger.Tracef("Router starting registry watch")
+				if r.opts.Logger.V(logger.TraceLevel) {
-				w, err := r.options.Registry.Watch(registry.WatchDomain(registry.WildcardDomain))
+					r.opts.Logger.Tracef(r.opts.Context, "Router starting register watch")
+				}
+				w, err := r.opts.Register.Watch(r.opts.Context, register.WatchDomain(register.WildcardDomain))
 				if err != nil {
-					if logger.V(logger.DebugLevel, logger.DefaultLogger) {
+					if r.opts.Logger.V(logger.DebugLevel) {
-						logger.Debugf("failed creating registry watcher: %v", err)
+						r.opts.Logger.Debug(r.opts.Context, "failed creating register watcher: %v", err)
 					}
 					time.Sleep(time.Second)
-					// in the event of an error reload routes
-					refreshRoutes()
 					continue
 				}
 
-				// watchRegistry calls stop when it's done
+				// watchRegister calls stop when it's done
-				if err := r.watchRegistry(w); err != nil {
+				if err := r.watchRegister(w); err != nil {
-					if logger.V(logger.DebugLevel, logger.DefaultLogger) {
+					if r.opts.Logger.V(logger.DebugLevel) {
-						logger.Debugf("Error watching the registry: %v", err)
+						r.opts.Logger.Debugf(r.opts.Context, "Error watching the register: %v", err)
 					}
 					time.Sleep(time.Second)
-					// in the event of an error reload routes
-					refreshRoutes()
 				}
 			}
 		}
 	}()
 
+	r.running = true
+
 	return nil
 }
 
+// Lookup routes in the routing table
+func (r *rtr) Lookup(q ...router.QueryOption) ([]router.Route, error) {
+	return r.Table().Query(q...)
+}
+
 // Watch routes
 func (r *rtr) Watch(opts ...router.WatchOption) (router.Watcher, error) {
 	return r.table.Watch(opts...)
 }
 
+// Close the router
+func (r *rtr) Close() error {
+	r.Lock()
+	defer r.Unlock()
+
+	select {
+	case <-r.exit:
+		return nil
+	default:
+		if !r.running {
+			return nil
+		}
+		close(r.exit)
+
+	}
+
+	r.running = false
+	return nil
+}
+
 // String prints debugging information about router
 func (r *rtr) String() string {
-	return "registry"
+	return "register"
+}
+
+func (r *rtr) Name() string {
+	return r.opts.Name
 }

registry_test.go

@@ -1,16 +1,18 @@
-package registry
+// +build ignore
+
+package register
 
 import (
 	"os"
 	"testing"
 
-	"github.com/micro/go-micro/v3/registry/memory"
+	"github.com/unistack-org/micro/v3/register/memory"
-	"github.com/micro/go-micro/v3/router"
+	"github.com/unistack-org/micro/v3/router"
 )
 
 func routerTestSetup() router.Router {
-	r := memory.NewRegistry()
+	r := memory.NewRegister()
-	return NewRouter(router.Registry(r))
+	return NewRouter(router.Register(r))
 }
 
 func TestRouterClose(t *testing.T) {
@@ -19,7 +21,7 @@ func TestRouterClose(t *testing.T) {
 	if err := r.Close(); err != nil {
 		t.Errorf("failed to stop router: %v", err)
 	}
-	if len(os.Getenv("IN_TRAVIS_CI")) == 0 {
+	if len(os.Getenv("INTEGRATION_TESTS")) == 0 {
 		t.Logf("TestRouterStartStop STOPPED")
 	}
 }

table.go

@@ -1,21 +1,24 @@
-package registry
+package register
 
 import (
 	"sync"
 	"time"
 
 	"github.com/google/uuid"
-	"github.com/micro/go-micro/v3/logger"
+	"github.com/unistack-org/micro/v3/logger"
-	"github.com/micro/go-micro/v3/router"
+	"github.com/unistack-org/micro/v3/router"
 )
 
 // table is an in-memory routing table
 type table struct {
 	sync.RWMutex
+	// lookup for a service
+	lookup func(string) ([]router.Route, error)
 	// routes stores service routes
 	routes map[string]map[uint64]*route
 	// watchers stores table watchers
 	watchers map[string]*tableWatcher
+	opts     router.Options
 }
 
 type route struct {
@@ -24,10 +27,12 @@ type route struct {
 }
 
 // newtable creates a new routing table and returns it
-func newTable() *table {
+func newTable(lookup func(string) ([]router.Route, error), opts ...router.Option) *table {
 	return &table{
+		lookup:   lookup,
 		routes:   make(map[string]map[uint64]*route),
 		watchers: make(map[string]*tableWatcher),
+		opts:     router.NewOptions(opts...),
 	}
 }
 
@@ -126,8 +131,8 @@ func (t *table) Create(r router.Route) error {
 	// create the route
 	t.routes[service][sum] = &route{r, time.Now()}
 
-	if logger.V(logger.DebugLevel, logger.DefaultLogger) {
+	if t.opts.Logger.V(logger.DebugLevel) {
-		logger.Debugf("Router emitting %s for route: %s", router.Create, r.Address)
+		t.opts.Logger.Debugf(t.opts.Context, "Router emitting %s for route: %s", router.Create, r.Address)
 	}
 
 	// send a route created event
@@ -160,8 +165,8 @@ func (t *table) Delete(r router.Route) error {
 		delete(t.routes, service)
 	}
 
-	if logger.V(logger.DebugLevel, logger.DefaultLogger) {
+	if t.opts.Logger.V(logger.DebugLevel) {
-		logger.Debugf("Router emitting %s for route: %s", router.Delete, r.Address)
+		t.opts.Logger.Debugf(t.opts.Context, "Router emitting %s for route: %s", router.Delete, r.Address)
 	}
 	go t.sendEvent(&router.Event{Type: router.Delete, Timestamp: time.Now(), Route: r})
 
@@ -185,8 +190,8 @@ func (t *table) Update(r router.Route) error {
 		// update the route
 		t.routes[service][sum] = &route{r, time.Now()}
 
-		if logger.V(logger.DebugLevel, logger.DefaultLogger) {
+		if t.opts.Logger.V(logger.DebugLevel) {
-			logger.Debugf("Router emitting %s for route: %s", router.Update, r.Address)
+			t.opts.Logger.Debugf(t.opts.Context, "Router emitting %s for route: %s", router.Update, r.Address)
 		}
 		go t.sendEvent(&router.Event{Type: router.Update, Timestamp: time.Now(), Route: r})
 		return nil
@@ -198,40 +203,155 @@ func (t *table) Update(r router.Route) error {
 	return nil
 }
 
-// Read entries from the table
+// List returns a list of all routes in the table
-func (t *table) Read(opts ...router.ReadOption) ([]router.Route, error) {
+func (t *table) List() ([]router.Route, error) {
-	var options router.ReadOptions
-	for _, o := range opts {
-		o(&options)
-	}
-
 	t.RLock()
 	defer t.RUnlock()
 
 	var routes []router.Route
-
+	for _, rmap := range t.routes {
-	// get the routes based on options passed
+		for _, route := range rmap {
-	if len(options.Service) > 0 {
+			routes = append(routes, route.route)
-		routeMap, ok := t.routes[options.Service]
-		if !ok {
-			return nil, router.ErrRouteNotFound
-		}
-		for _, rt := range routeMap {
-			routes = append(routes, rt.route)
-		}
-		return routes, nil
-	}
-
-	// otherwise get all routes
-	for _, serviceRoutes := range t.routes {
-		for _, rt := range serviceRoutes {
-			routes = append(routes, rt.route)
 		}
 	}
 
 	return routes, nil
 }
 
+// isMatch checks if the route matches given query options
+func isMatch(route router.Route, address, gateway, network, rtr, link string) bool {
+	// matches the values provided
+	match := func(a, b string) bool {
+		if a == "*" || b == "*" || a == b {
+			return true
+		}
+		return false
+	}
+
+	// a simple struct to hold our values
+	type compare struct {
+		a string
+		b string
+	}
+
+	// compare the following values
+	values := []compare{
+		{gateway, route.Gateway},
+		{network, route.Network},
+		{rtr, route.Router},
+		{address, route.Address},
+		{link, route.Link},
+	}
+
+	for _, v := range values {
+		// attempt to match each value
+		if !match(v.a, v.b) {
+			return false
+		}
+	}
+
+	return true
+}
+
+// filterRoutes finds all the routes for given network and router and returns them
+func filterRoutes(routes map[uint64]*route, opts router.QueryOptions) []router.Route {
+	address := opts.Address
+	gateway := opts.Gateway
+	network := opts.Network
+	rtr := opts.Router
+	link := opts.Link
+
+	// routeMap stores the routes we're going to advertise
+	routeMap := make(map[string][]router.Route)
+
+	var routeCnt int
+
+	for _, rt := range routes {
+		// get the actual route
+		route := rt.route
+
+		if isMatch(route, address, gateway, network, rtr, link) {
+			// add matchihg route to the routeMap
+			routeKey := route.Service + "@" + route.Network
+			routeMap[routeKey] = append(routeMap[routeKey], route)
+			routeCnt++
+		}
+	}
+
+	results := make([]router.Route, 0, routeCnt)
+	for _, route := range routeMap {
+		results = append(results, route...)
+	}
+
+	return results
+}
+
+// Lookup queries routing table and returns all routes that match the lookup query
+func (t *table) Query(q ...router.QueryOption) ([]router.Route, error) {
+	// create new query options
+	opts := router.NewQuery(q...)
+
+	// create a cwslicelist of query results
+	results := make([]router.Route, 0, len(t.routes))
+
+	// readAndFilter routes for this service under read lock.
+	readAndFilter := func(q router.QueryOptions) ([]router.Route, bool) {
+		t.RLock()
+		defer t.RUnlock()
+
+		routes, ok := t.routes[q.Service]
+		if !ok || len(routes) == 0 {
+			return nil, false
+		}
+
+		return filterRoutes(routes, q), true
+	}
+
+	if opts.Service != "*" {
+		// try and load services from the cache
+		if routes, ok := readAndFilter(opts); ok {
+			return routes, nil
+		}
+
+		// lookup the route and try again
+		// TODO: move this logic out of the hot path
+		// being hammered on queries will require multiple lookups
+		routes, err := t.lookup(opts.Service)
+		if err != nil {
+			return nil, err
+		}
+
+		// cache the routes
+		for _, rt := range routes {
+			t.Create(rt)
+		}
+
+		// try again
+		if routes, ok := readAndFilter(opts); ok {
+			return routes, nil
+		}
+
+		return nil, router.ErrRouteNotFound
+	}
+
+	// search through all destinations
+	t.RLock()
+
+	for _, routes := range t.routes {
+		// filter the routes
+		found := filterRoutes(routes, opts)
+		// ensure we don't append zero length routes
+		if len(found) == 0 {
+			continue
+		}
+		results = append(results, found...)
+	}
+
+	t.RUnlock()
+
+	return results, nil
+}
+
 // Watch returns routing table entry watcher
 func (t *table) Watch(opts ...router.WatchOption) (router.Watcher, error) {
 	// by default watch everything

table_test.go

@@ -1,13 +1,22 @@
-package registry
+// +build ignore
+
+package register
 
 import (
+	"fmt"
 	"testing"
 
-	"github.com/micro/go-micro/v3/router"
+	"github.com/unistack-org/micro/v3/router"
 )
 
-func testSetup() (*table, router.Route) {
+func testSetup(t *testing.T) (*table, router.Route) {
-	table := newTable()
+	r, err := NewRouter()
+	if err != nil {
+		t.Fatal(err)
+	}
+	routr := r.(*rtr)
+
+	table := newTable(routr.lookup)
 
 	route := router.Route{
 		Service: "dest.svc",
@@ -23,7 +32,7 @@ func testSetup() (*table, router.Route) {
 }
 
 func TestCreate(t *testing.T) {
-	table, route := testSetup()
+	table, route := testSetup(t)
 
 	if err := table.Create(route); err != nil {
 		t.Fatalf("error adding route: %s", err)
@@ -43,13 +52,13 @@ func TestCreate(t *testing.T) {
 }
 
 func TestDelete(t *testing.T) {
-	table, route := testSetup()
+	table, route := testSetup(t)
 
 	if err := table.Create(route); err != nil {
 		t.Fatalf("error adding route: %s", err)
 	}
 
-	// should fail to delete non-existant route
+	// should fail to delete non-existent route
 	prevSvc := route.Service
 	route.Service = "randDest"
 
@@ -66,7 +75,7 @@ func TestDelete(t *testing.T) {
 }
 
 func TestUpdate(t *testing.T) {
-	table, route := testSetup()
+	table, route := testSetup(t)
 
 	if err := table.Create(route); err != nil {
 		t.Fatalf("error adding route: %s", err)
@@ -88,7 +97,7 @@ func TestUpdate(t *testing.T) {
 }
 
 func TestList(t *testing.T) {
-	table, route := testSetup()
+	table, route := testSetup(t)
 
 	svc := []string{"one.svc", "two.svc", "three.svc"}
 
@@ -99,7 +108,7 @@ func TestList(t *testing.T) {
 		}
 	}
 
-	routes, err := table.Read()
+	routes, err := table.List()
 	if err != nil {
 		t.Fatalf("error listing routes: %s", err)
 	}
@@ -110,22 +119,237 @@ func TestList(t *testing.T) {
 }
 
 func TestQuery(t *testing.T) {
-	table, route := testSetup()
+	table, route := testSetup(t)
 
-	if err := table.Create(route); err != nil {
+	svc := []string{"svc1", "svc2", "svc3", "svc1"}
-		t.Fatalf("error adding route: %s", err)
+	net := []string{"net1", "net2", "net1", "net3"}
+	gw := []string{"gw1", "gw2", "gw3", "gw3"}
+	rtr := []string{"rtr1", "rt2", "rt3", "rtr3"}
+
+	for i := 0; i < len(svc); i++ {
+		route.Service = svc[i]
+		route.Network = net[i]
+		route.Gateway = gw[i]
+		route.Router = rtr[i]
+		route.Link = router.DefaultLink
+
+		if err := table.Create(route); err != nil {
+			t.Fatalf("error adding route: %s", err)
+		}
 	}
 
-	rt, err := table.Read(router.ReadService(route.Service))
+	// return all routes
+	routes, err := table.Query()
 	if err != nil {
-		t.Fatal("Expected a route got err", err)
+		t.Fatalf("error looking up routes: %s", err)
+	} else if len(routes) == 0 {
+		t.Fatalf("error looking up routes: not found")
 	}
 
-	if len(rt) != 1 {
+	// query routes particular network
-		t.Fatalf("Expected one route got %d", len(rt))
+	network := "net1"
+
+	routes, err = table.Query(router.QueryNetwork(network))
+	if err != nil {
+		t.Fatalf("error looking up routes: %s", err)
 	}
 
-	if rt[0].Hash() != route.Hash() {
+	if len(routes) != 2 {
-		t.Fatal("Mismatched routes received")
+		t.Fatalf("incorrect number of routes returned. Expected: %d, found: %d", 2, len(routes))
+	}
+
+	for _, route := range routes {
+		if route.Network != network {
+			t.Fatalf("incorrect route returned. Expected network: %s, found: %s", network, route.Network)
+		}
+	}
+
+	// query routes for particular gateway
+	gateway := "gw1"
+
+	routes, err = table.Query(router.QueryGateway(gateway))
+	if err != nil {
+		t.Fatalf("error looking up routes: %s", err)
+	}
+
+	if len(routes) != 1 {
+		t.Fatalf("incorrect number of routes returned. Expected: %d, found: %d", 1, len(routes))
+	}
+
+	if routes[0].Gateway != gateway {
+		t.Fatalf("incorrect route returned. Expected gateway: %s, found: %s", gateway, routes[0].Gateway)
+	}
+
+	// query routes for particular router
+	rt := "rtr1"
+
+	routes, err = table.Query(router.QueryRouter(rt))
+	if err != nil {
+		t.Fatalf("error looking up routes: %s", err)
+	}
+
+	if len(routes) != 1 {
+		t.Fatalf("incorrect number of routes returned. Expected: %d, found: %d", 1, len(routes))
+	}
+
+	if routes[0].Router != rt {
+		t.Fatalf("incorrect route returned. Expected router: %s, found: %s", rt, routes[0].Router)
+	}
+
+	// query particular gateway and network
+	query := []router.QueryOption{
+		router.QueryGateway(gateway),
+		router.QueryNetwork(network),
+		router.QueryRouter(rt),
+	}
+
+	routes, err = table.Query(query...)
+	if err != nil {
+		t.Fatalf("error looking up routes: %s", err)
+	}
+
+	if len(routes) != 1 {
+		t.Fatalf("incorrect number of routes returned. Expected: %d, found: %d", 1, len(routes))
+	}
+
+	if routes[0].Gateway != gateway {
+		t.Fatalf("incorrect route returned. Expected gateway: %s, found: %s", gateway, routes[0].Gateway)
+	}
+
+	if routes[0].Network != network {
+		t.Fatalf("incorrect network returned. Expected network: %s, found: %s", network, routes[0].Network)
+	}
+
+	if routes[0].Router != rt {
+		t.Fatalf("incorrect route returned. Expected router: %s, found: %s", rt, routes[0].Router)
+	}
+
+	// non-existen route query
+	routes, err = table.Query(router.QueryService("foobar"))
+	if err != router.ErrRouteNotFound {
+		t.Fatalf("error looking up routes. Expected: %s, found: %s", router.ErrRouteNotFound, err)
+	}
+
+	if len(routes) != 0 {
+		t.Fatalf("incorrect number of routes returned. Expected: %d, found: %d", 0, len(routes))
+	}
+
+	// query NO routes
+	query = []router.QueryOption{
+		router.QueryGateway(gateway),
+		router.QueryNetwork(network),
+		router.QueryLink("network"),
+	}
+
+	routes, err = table.Query(query...)
+	if err != nil {
+		t.Fatalf("error looking up routes: %s", err)
+	}
+
+	if len(routes) > 0 {
+		t.Fatalf("incorrect number of routes returned. Expected: %d, found: %d", 0, len(routes))
+	}
+
+	// insert local routes to query
+	for i := 0; i < 2; i++ {
+		route.Link = "foobar"
+		route.Address = fmt.Sprintf("local.route.address-%d", i)
+		if err := table.Create(route); err != nil {
+			t.Fatalf("error adding route: %s", err)
+		}
+	}
+
+	// query local routes
+	query = []router.QueryOption{
+		router.QueryGateway("*"),
+		router.QueryNetwork("*"),
+		router.QueryLink("foobar"),
+	}
+
+	routes, err = table.Query(query...)
+	if err != nil {
+		t.Fatalf("error looking up routes: %s", err)
+	}
+
+	if len(routes) != 2 {
+		t.Fatalf("incorrect number of routes returned. Expected: %d, found: %d", 2, len(routes))
+	}
+
+	// add two different routes for svcX with different metric
+	for i := 0; i < 2; i++ {
+		route.Service = "svcX"
+		route.Address = fmt.Sprintf("svcX.route.address-%d", i)
+		route.Metric = int64(100 + i)
+		route.Link = router.DefaultLink
+		if err := table.Create(route); err != nil {
+			t.Fatalf("error adding route: %s", err)
+		}
+	}
+
+	query = []router.QueryOption{
+		router.QueryService("svcX"),
+	}
+
+	routes, err = table.Query(query...)
+	if err != nil {
+		t.Fatalf("error looking up routes: %s", err)
+	}
+
+	if len(routes) != 2 {
+		t.Fatalf("incorrect number of routes returned. Expected: %d, found: %d", 1, len(routes))
 	}
 }
+
+func TestFallback(t *testing.T) {
+
+	r := &rtr{
+		options: router.NewOptions(),
+	}
+	route := router.Route{
+		Service: "go.micro.service.foo",
+		Router:  r.options.Id,
+		Link:    router.DefaultLink,
+		Metric:  router.DefaultLocalMetric,
+	}
+	r.table = newTable(func(s string) ([]router.Route, error) {
+		return []router.Route{route}, nil
+	})
+	r.start()
+
+	rts, err := r.Lookup(router.QueryService("go.micro.service.foo"))
+	if err != nil {
+		t.Fatalf("error looking up service %s", err)
+	}
+	if len(rts) != 1 {
+		t.Fatalf("incorrect number of routes returned %d", len(rts))
+	}
+
+	// deleting from the table but the next query should invoke the fallback that we passed during new table creation
+	if err := r.table.Delete(route); err != nil {
+		t.Fatalf("error deleting route %s", err)
+	}
+
+	rts, err = r.Lookup(router.QueryService("go.micro.service.foo"))
+	if err != nil {
+		t.Fatalf("error looking up service %s", err)
+	}
+	if len(rts) != 1 {
+		t.Fatalf("incorrect number of routes returned %d", len(rts))
+	}
+
+}
+
+func TestFallbackError(t *testing.T) {
+	r := &rtr{
+		options: router.NewOptions(),
+	}
+	r.table = newTable(func(s string) ([]router.Route, error) {
+		return nil, fmt.Errorf("ERROR")
+	})
+	r.start()
+	_, err := r.Lookup(router.QueryService("go.micro.service.foo"))
+	if err == nil {
+		t.Fatalf("expected error looking up service but none returned")
+	}
+
+}

watcher.go

@@ -1,9 +1,9 @@
-package registry
+package register
 
 import (
 	"sync"
 
-	"github.com/micro/go-micro/v3/router"
+	"github.com/unistack-org/micro/v3/router"
 )
 
 // tableWatcher implements routing table Watcher