add Live/Ready/Health methods

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

broker/broker.go

@@ -46,6 +46,12 @@ type Broker interface {
 	BatchSubscribe(ctx context.Context, topic string, h BatchHandler, opts ...SubscribeOption) (Subscriber, error)
 	// String type of broker
 	String() string
+	// Live returns broker liveness
+	Live() bool
+	// Ready returns broker readiness
+	Ready() bool
+	// Health returns broker health
+	Health() bool
 }
 
 type (

broker/memory/memory.go

@@ -339,6 +339,18 @@ func (m *memoryBroker) Name() string {
 	return m.opts.Name
 }
 
+func (m *memoryBroker) Live() bool {
+	return true
+}
+
+func (m *memoryBroker) Ready() bool {
+	return true
+}
+
+func (m *memoryBroker) Health() bool {
+	return true
+}
+
 func (m *memoryEvent) Topic() string {
 	return m.topic
 }

broker/noop.go

@@ -25,6 +25,18 @@ func NewBroker(opts ...Option) *NoopBroker {
 	return b
 }
 
+func (b *NoopBroker) Health() bool {
+	return true
+}
+
+func (b *NoopBroker) Live() bool {
+	return true
+}
+
+func (b *NoopBroker) Ready() bool {
+	return true
+}
+
 func (b *NoopBroker) Name() string {
 	return b.opts.Name
 }

client/options.go

@@ -11,7 +11,6 @@ import (
 	"go.unistack.org/micro/v3/logger"
 	"go.unistack.org/micro/v3/metadata"
 	"go.unistack.org/micro/v3/meter"
-	"go.unistack.org/micro/v3/network/transport"
 	"go.unistack.org/micro/v3/options"
 	"go.unistack.org/micro/v3/register"
 	"go.unistack.org/micro/v3/router"
@@ -22,8 +21,6 @@ import (
 
 // Options holds client options
 type Options struct {
-	// Transport used for transfer messages
-	Transport transport.Transport
 	// Selector used to select needed address
 	Selector selector.Selector
 	// Logger used to log messages
@@ -194,18 +191,16 @@ func NewOptions(opts ...Option) Options {
 			Retry:          DefaultRetry,
 			Retries:        DefaultRetries,
 			RequestTimeout: DefaultRequestTimeout,
-			DialTimeout:    transport.DefaultDialTimeout,
 		},
-		Lookup:    LookupRoute,
+		Lookup:   LookupRoute,
-		PoolSize:  DefaultPoolSize,
+		PoolSize: DefaultPoolSize,
-		PoolTTL:   DefaultPoolTTL,
+		PoolTTL:  DefaultPoolTTL,
-		Selector:  random.NewSelector(),
+		Selector: random.NewSelector(),
-		Logger:    logger.DefaultLogger,
+		Logger:   logger.DefaultLogger,
-		Broker:    broker.DefaultBroker,
+		Broker:   broker.DefaultBroker,
-		Meter:     meter.DefaultMeter,
+		Meter:    meter.DefaultMeter,
-		Tracer:    tracer.DefaultTracer,
+		Tracer:   tracer.DefaultTracer,
-		Router:    router.DefaultRouter,
+		Router:   router.DefaultRouter,
-		Transport: transport.DefaultTransport,
 	}
 
 	for _, o := range opts {
@@ -278,13 +273,6 @@ func PoolTTL(d time.Duration) Option {
 	}
 }
 
-// Transport to use for communication e.g http, rabbitmq, etc
-func Transport(t transport.Transport) Option {
-	return func(o *Options) {
-		o.Transport = t
-	}
-}
-
 // Register sets the routers register
 func Register(r register.Register) Option {
 	return func(o *Options) {
@@ -334,14 +322,6 @@ func TLSConfig(t *tls.Config) Option {
 	return func(o *Options) {
 		// set the internal tls
 		o.TLSConfig = t
-
-		// set the default transport if one is not
-		// already set. Required for Init call below.
-
-		// set the transport tls
-		_ = o.Transport.Init(
-			transport.TLSConfig(t),
-		)
 	}
 }
 
@@ -507,13 +487,6 @@ func WithAuthToken(t string) CallOption {
 	}
 }
 
-// WithNetwork is a CallOption which sets the network attribute
-func WithNetwork(n string) CallOption {
-	return func(o *CallOptions) {
-		o.Network = n
-	}
-}
-
 // WithRouter sets the router to use for this call
 func WithRouter(r router.Router) CallOption {
 	return func(o *CallOptions) {

cluster/cluster.go

@@ -38,4 +38,10 @@ type Cluster interface {
 	Broadcast(ctx context.Context, msg Message, filter ...string) error
 	// Unicast send message to single member in cluster
 	Unicast(ctx context.Context, node Node, msg Message) error
+	// Live returns cluster liveness
+	Live() bool
+	// Ready returns cluster readiness
+	Ready() bool
+	// Health returns cluster health
+	Health() bool
 }

config/config.go

@@ -4,7 +4,6 @@ package config
 import (
 	"context"
 	"errors"
-	"fmt"
 	"reflect"
 	"time"
 )
@@ -139,7 +138,7 @@ var (
 				return nil
 			}
 			if err := fn(ctx, c); err != nil {
-				c.Options().Logger.Error(ctx, fmt.Sprintf("%s BeforeLoad error", c.String()), err)
+				c.Options().Logger.Error(ctx, c.String()+" BeforeLoad error", err)
 				if !c.Options().AllowFail {
 					return err
 				}
@@ -154,7 +153,7 @@ var (
 				return nil
 			}
 			if err := fn(ctx, c); err != nil {
-				c.Options().Logger.Error(ctx, fmt.Sprintf("%s AfterLoad error", c.String()), err)
+				c.Options().Logger.Error(ctx, c.String()+" AfterLoad error", err)
 				if !c.Options().AllowFail {
 					return err
 				}
@@ -169,7 +168,7 @@ var (
 				return nil
 			}
 			if err := fn(ctx, c); err != nil {
-				c.Options().Logger.Error(ctx, fmt.Sprintf("%s BeforeSave error", c.String()), err)
+				c.Options().Logger.Error(ctx, c.String()+" BeforeSave error", err)
 				if !c.Options().AllowFail {
 					return err
 				}
@@ -184,7 +183,7 @@ var (
 				return nil
 			}
 			if err := fn(ctx, c); err != nil {
-				c.Options().Logger.Error(ctx, fmt.Sprintf("%s AfterSave error", c.String()), err)
+				c.Options().Logger.Error(ctx, c.String()+" AfterSave error", err)
 				if !c.Options().AllowFail {
 					return err
 				}
@@ -199,7 +198,7 @@ var (
 				return nil
 			}
 			if err := fn(ctx, c); err != nil {
-				c.Options().Logger.Error(ctx, fmt.Sprintf("%s BeforeInit error", c.String()), err)
+				c.Options().Logger.Error(ctx, c.String()+" BeforeInit error", err)
 				if !c.Options().AllowFail {
 					return err
 				}
@@ -214,7 +213,7 @@ var (
 				return nil
 			}
 			if err := fn(ctx, c); err != nil {
-				c.Options().Logger.Error(ctx, fmt.Sprintf("%s AfterInit error", c.String(), err), err)
+				c.Options().Logger.Error(ctx, c.String()+" AfterInit error", err)
 				if !c.Options().AllowFail {
 					return err
 				}

metadata/metadata_test.go

@@ -5,6 +5,28 @@ import (
 	"testing"
 )
 
+func TestMultipleUsage(t *testing.T) {
+	ctx := context.TODO()
+	md := New(0)
+	md.Set("key1_1", "val1_1", "key1_2", "val1_2", "key1_3", "val1_3")
+	ctx = NewIncomingContext(ctx, Copy(md))
+	ctx = NewOutgoingContext(ctx, Copy(md))
+	imd, _ := FromIncomingContext(ctx)
+	omd, _ := FromOutgoingContext(ctx)
+	_ = func(x context.Context) context.Context {
+		m, _ := FromIncomingContext(x)
+		m.Del("key1_2")
+		return ctx
+	}(ctx)
+	_ = func(x context.Context) context.Context {
+		m, _ := FromIncomingContext(x)
+		m.Del("key1_3")
+		return ctx
+	}(ctx)
+	t.Logf("imd %#+v", imd)
+	t.Logf("omd %#+v", omd)
+}
+
 func TestMetadataSetMultiple(t *testing.T) {
 	md := New(4)
 	md.Set("key1", "val1", "key2", "val2", "key3")

micro_test.go

@@ -66,6 +66,12 @@ type bro struct {
 
 func (p *bro) Name() string { return p.name }
 
+func (p *bro) Live() bool { return true }
+
+func (p *bro) Ready() bool { return true }
+
+func (p *bro) Health() bool { return true }
+
 func (p *bro) Init(opts ...broker.Option) error { return nil }
 
 // Options returns broker options

network/tunnel/broker/broker.go

@@ -45,6 +45,18 @@ type (
 	tunnelAddr struct{}
 )
 
+func (t *tunBroker) Live() bool {
+	return true
+}
+
+func (t *tunBroker) Ready() bool {
+	return true
+}
+
+func (t *tunBroker) Health() bool {
+	return true
+}
+
 func (t *tunBroker) Init(opts ...broker.Option) error {
 	for _, o := range opts {
 		o(&t.opts)

register/register.go

@@ -29,17 +29,32 @@ var (
 // and an abstraction over varying implementations
 // {consul, etcd, zookeeper, ...}
 type Register interface {
+	// Name returns register name
 	Name() string
+	// Init initialize register
 	Init(...Option) error
+	// Options returns options for register
 	Options() Options
+	// Connect initialize connect to register
 	Connect(context.Context) error
+	// Disconnect initialize discconection from register
 	Disconnect(context.Context) error
+	// Register service in registry
 	Register(context.Context, *Service, ...RegisterOption) error
+	// Deregister service from registry
 	Deregister(context.Context, *Service, ...DeregisterOption) error
+	// LookupService in registry
 	LookupService(context.Context, string, ...LookupOption) ([]*Service, error)
+	// ListServices in registry
 	ListServices(context.Context, ...ListOption) ([]*Service, error)
+	// Watch registry events
 	Watch(context.Context, ...WatchOption) (Watcher, error)
+	// String returns registry string representation
 	String() string
+	// Live returns register liveness
+	// Live() bool
+	// Ready returns register readiness
+	// Ready() bool
 }
 
 // Service holds service register info

server/noop.go

@@ -121,6 +121,18 @@ func (n *noopServer) newCodec(contentType string) (codec.Codec, error) {
 	return nil, codec.ErrUnknownContentType
 }
 
+func (n *noopServer) Live() bool {
+	return true
+}
+
+func (n *noopServer) Ready() bool {
+	return true
+}
+
+func (n *noopServer) Health() bool {
+	return true
+}
+
 func (n *noopServer) Handle(handler Handler) error {
 	n.h = handler
 	return nil

server/options.go

@@ -12,7 +12,6 @@ import (
 	"go.unistack.org/micro/v3/logger"
 	"go.unistack.org/micro/v3/metadata"
 	"go.unistack.org/micro/v3/meter"
-	"go.unistack.org/micro/v3/network/transport"
 	"go.unistack.org/micro/v3/options"
 	"go.unistack.org/micro/v3/register"
 	msync "go.unistack.org/micro/v3/sync"
@@ -37,8 +36,6 @@ type Options struct {
 	Logger logger.Logger
 	// Meter holds the meter
 	Meter meter.Meter
-	// Transport holds the transport
-	Transport transport.Transport
 
 	/*
 		// Router for requests
@@ -100,7 +97,6 @@ func NewOptions(opts ...Option) Options {
 		Tracer:           tracer.DefaultTracer,
 		Broker:           broker.DefaultBroker,
 		Register:         register.DefaultRegister,
-		Transport:        transport.DefaultTransport,
 		Address:          DefaultAddress,
 		Name:             DefaultName,
 		Version:          DefaultVersion,
@@ -209,13 +205,6 @@ func Tracer(t tracer.Tracer) Option {
 	}
 }
 
-// Transport mechanism for communication e.g http, rabbitmq, etc
-func Transport(t transport.Transport) Option {
-	return func(o *Options) {
-		o.Transport = t
-	}
-}
-
 // Metadata associated with the server
 func Metadata(md metadata.Metadata) Option {
 	return func(o *Options) {
@@ -249,14 +238,6 @@ func TLSConfig(t *tls.Config) Option {
 	return func(o *Options) {
 		// set the internal tls
 		o.TLSConfig = t
-
-		// set the default transport if one is not
-		// already set. Required for Init call below.
-
-		// set the transport tls
-		_ = o.Transport.Init(
-			transport.TLSConfig(t),
-		)
 	}
 }
 

server/server.go

@@ -62,6 +62,12 @@ type Server interface {
 	Stop() error
 	// Server implementation
 	String() string
+	// Live returns server liveness
+	Live() bool
+	// Ready returns server readiness
+	Ready() bool
+	// Health returns server health
+	Health() bool
 }
 
 type (

service.go

@@ -1,5 +1,5 @@
 // Package micro is a pluggable framework for microservices
-package micro // import "go.unistack.org/micro/v3"
+package micro
 
 import (
 	"fmt"
@@ -72,8 +72,14 @@ type Service interface {
 	Start() error
 	// Stop the service
 	Stop() error
-	// The service implementation
+	// String service representation
 	String() string
+	// Live returns service liveness
+	Live() bool
+	// Ready returns service readiness
+	Ready() bool
+	// Health returns service health
+	Health() bool
 }
 
 // RegisterHandler is syntactic sugar for registering a handler
@@ -101,9 +107,7 @@ func (s *service) Name() string {
 	return s.opts.Name
 }
 
-// Init initialises options. Additionally it calls cmd.Init
+// Init initialises options.
-// which parses command line flags. cmd.Init is only called
-// on first Init.
 //
 //nolint:gocyclo
 func (s *service) Init(opts ...Option) error {
@@ -252,6 +256,63 @@ func (s *service) String() string {
 	return s.opts.Name
 }
 
+func (s *service) Live() bool {
+	for _, v := range s.opts.Brokers {
+		if !v.Live() {
+			return false
+		}
+	}
+	for _, v := range s.opts.Servers {
+		if !v.Live() {
+			return false
+		}
+	}
+	for _, v := range s.opts.Stores {
+		if !v.Live() {
+			return false
+		}
+	}
+	return true
+}
+
+func (s *service) Ready() bool {
+	for _, v := range s.opts.Brokers {
+		if !v.Ready() {
+			return false
+		}
+	}
+	for _, v := range s.opts.Servers {
+		if !v.Ready() {
+			return false
+		}
+	}
+	for _, v := range s.opts.Stores {
+		if !v.Ready() {
+			return false
+		}
+	}
+	return true
+}
+
+func (s *service) Health() bool {
+	for _, v := range s.opts.Brokers {
+		if !v.Health() {
+			return false
+		}
+	}
+	for _, v := range s.opts.Servers {
+		if !v.Health() {
+			return false
+		}
+	}
+	for _, v := range s.opts.Stores {
+		if !v.Health() {
+			return false
+		}
+	}
+	return true
+}
+
 //nolint:gocyclo
 func (s *service) Start() error {
 	var err error
@@ -281,10 +342,6 @@ func (s *service) Start() error {
 		config.Loggers[0].Info(s.opts.Context, fmt.Sprintf("starting [service] %s version %s", s.Options().Name, s.Options().Version))
 	}
 
-	if len(s.opts.Servers) == 0 {
-		return fmt.Errorf("cant start nil server")
-	}
-
 	for _, reg := range s.opts.Registers {
 		if err = reg.Connect(s.opts.Context); err != nil {
 			return err

store/memory/memory.go

@@ -149,6 +149,18 @@ func (m *memoryStore) Name() string {
 	return m.opts.Name
 }
 
+func (m *memoryStore) Live() bool {
+	return true
+}
+
+func (m *memoryStore) Ready() bool {
+	return true
+}
+
+func (m *memoryStore) Health() bool {
+	return true
+}
+
 func (m *memoryStore) Exists(ctx context.Context, key string, opts ...store.ExistsOption) error {
 	if m.opts.LazyConnect {
 		if err := m.connect(ctx); err != nil {
@@ -279,3 +291,16 @@ func (m *memoryStore) connect(ctx context.Context) error {
 	m.isConnected.CompareAndSwap(0, 1)
 	return nil
 }
+
+func (m *memoryStore) Watch(ctx context.Context, opts ...store.WatchOption) (store.Watcher, error) {
+	return &watcher{}, nil
+}
+
+type watcher struct{}
+
+func (w *watcher) Next() (store.Event, error) {
+	return nil, nil
+}
+
+func (w *watcher) Stop() {
+}

store/noop.go

@@ -23,6 +23,18 @@ type noopStore struct {
 	isConnected atomic.Int32
 }
 
+func (n *noopStore) Live() bool {
+	return true
+}
+
+func (n *noopStore) Ready() bool {
+	return true
+}
+
+func (n *noopStore) Health() bool {
+	return true
+}
+
 func NewStore(opts ...Option) *noopStore {
 	options := NewOptions(opts...)
 	return &noopStore{opts: options}

store/store.go

@@ -45,7 +45,14 @@ type Store interface {
 	Disconnect(ctx context.Context) error
 	// String returns the name of the implementation.
 	String() string
+	// Watch returns events watcher
 	Watch(ctx context.Context, opts ...WatchOption) (Watcher, error)
+	// Live returns store liveness
+	Live() bool
+	// Ready returns store readiness
+	Ready() bool
+	// Health returns store health
+	Health() bool
 }
 
 type (

store/wrapper.go

@@ -70,3 +70,15 @@ func (w *NamespaceStore) String() string {
 func (w *NamespaceStore) Watch(ctx context.Context, opts ...WatchOption) (Watcher, error) {
 	return w.s.Watch(ctx, opts...)
 }
+
+func (w *NamespaceStore) Live() bool {
+	return w.s.Live()
+}
+
+func (w *NamespaceStore) Ready() bool {
+	return w.s.Ready()
+}
+
+func (w *NamespaceStore) Health() bool {
+	return w.s.Health()
+}

util/io/io.go

@@ -1,40 +0,0 @@
-// Package io is for io management
-package io
-
-import (
-	"io"
-
-	"go.unistack.org/micro/v3/network/transport"
-)
-
-type rwc struct {
-	socket transport.Socket
-}
-
-func (r *rwc) Read(p []byte) (n int, err error) {
-	m := new(transport.Message)
-	if err := r.socket.Recv(m); err != nil {
-		return 0, err
-	}
-	copy(p, m.Body)
-	return len(m.Body), nil
-}
-
-func (r *rwc) Write(p []byte) (n int, err error) {
-	err = r.socket.Send(&transport.Message{
-		Body: p,
-	})
-	if err != nil {
-		return 0, err
-	}
-	return len(p), nil
-}
-
-func (r *rwc) Close() error {
-	return r.socket.Close()
-}
-
-// NewRWC returns a new ReadWriteCloser
-func NewRWC(sock transport.Socket) io.ReadWriteCloser {
-	return &rwc{sock}
-}

util/pool/default.go

@@ -1,118 +0,0 @@
-package pool
-
-import (
-	"context"
-	"sync"
-	"time"
-
-	"go.unistack.org/micro/v3/network/transport"
-	"go.unistack.org/micro/v3/util/id"
-)
-
-type pool struct {
-	tr    transport.Transport
-	conns map[string][]*poolConn
-	size  int
-	ttl   time.Duration
-	sync.Mutex
-}
-
-type poolConn struct {
-	created time.Time
-	transport.Client
-	id string
-}
-
-func newPool(options Options) *pool {
-	return &pool{
-		size:  options.Size,
-		tr:    options.Transport,
-		ttl:   options.TTL,
-		conns: make(map[string][]*poolConn),
-	}
-}
-
-func (p *pool) Close() error {
-	p.Lock()
-	for k, c := range p.conns {
-		for _, conn := range c {
-			conn.Client.Close()
-		}
-		delete(p.conns, k)
-	}
-	p.Unlock()
-	return nil
-}
-
-// NoOp the Close since we manage it
-func (p *poolConn) Close() error {
-	return nil
-}
-
-func (p *poolConn) ID() string {
-	return p.id
-}
-
-func (p *poolConn) Created() time.Time {
-	return p.created
-}
-
-func (p *pool) Get(ctx context.Context, addr string, opts ...transport.DialOption) (Conn, error) {
-	p.Lock()
-	conns := p.conns[addr]
-
-	// while we have conns check age and then return one
-	// otherwise we'll create a new conn
-	for len(conns) > 0 {
-		conn := conns[len(conns)-1]
-		conns = conns[:len(conns)-1]
-		p.conns[addr] = conns
-
-		// if conn is old kill it and move on
-		if d := time.Since(conn.Created()); d > p.ttl {
-			conn.Client.Close()
-			continue
-		}
-
-		// we got a good conn, lets unlock and return it
-		p.Unlock()
-
-		return conn, nil
-	}
-
-	p.Unlock()
-
-	// create new conn
-	c, err := p.tr.Dial(ctx, addr, opts...)
-	if err != nil {
-		return nil, err
-	}
-	id, err := id.New()
-	if err != nil {
-		return nil, err
-	}
-	return &poolConn{
-		Client:  c,
-		id:      id,
-		created: time.Now(),
-	}, nil
-}
-
-func (p *pool) Release(conn Conn, err error) error {
-	// don't store the conn if it has errored
-	if err != nil {
-		return conn.(*poolConn).Client.Close()
-	}
-
-	// otherwise put it back for reuse
-	p.Lock()
-	conns := p.conns[conn.Remote()]
-	if len(conns) >= p.size {
-		p.Unlock()
-		return conn.(*poolConn).Client.Close()
-	}
-	p.conns[conn.Remote()] = append(conns, conn.(*poolConn))
-	p.Unlock()
-
-	return nil
-}

util/pool/default_test.go

@@ -1,92 +0,0 @@
-//go:build ignore
-// +build ignore
-
-package pool
-
-import (
-	"testing"
-	"time"
-
-	"go.unistack.org/micro/v3/network/transport"
-	"go.unistack.org/micro/v3/network/transport/memory"
-)
-
-func testPool(t *testing.T, size int, ttl time.Duration) {
-	// mock transport
-	tr := memory.NewTransport()
-
-	options := Options{
-		TTL:       ttl,
-		Size:      size,
-		Transport: tr,
-	}
-	// zero pool
-	p := newPool(options)
-
-	// listen
-	l, err := tr.Listen(":0")
-	if err != nil {
-		t.Fatal(err)
-	}
-	defer l.Close()
-
-	// accept loop
-	go func() {
-		for {
-			if err := l.Accept(func(s transport.Socket) {
-				for {
-					var msg transport.Message
-					if err := s.Recv(&msg); err != nil {
-						return
-					}
-					if err := s.Send(&msg); err != nil {
-						return
-					}
-				}
-			}); err != nil {
-				return
-			}
-		}
-	}()
-
-	for i := 0; i < 10; i++ {
-		// get a conn
-		c, err := p.Get(l.Addr())
-		if err != nil {
-			t.Fatal(err)
-		}
-
-		msg := &transport.Message{
-			Body: []byte(`hello world`),
-		}
-
-		if err := c.Send(msg); err != nil {
-			t.Fatal(err)
-		}
-
-		var rcv transport.Message
-
-		if err := c.Recv(&rcv); err != nil {
-			t.Fatal(err)
-		}
-
-		if string(rcv.Body) != string(msg.Body) {
-			t.Fatalf("got %v, expected %v", rcv.Body, msg.Body)
-		}
-
-		// release the conn
-		p.Release(c, nil)
-
-		p.Lock()
-		if i := len(p.conns[l.Addr()]); i > size {
-			p.Unlock()
-			t.Fatalf("pool size %d is greater than expected %d", i, size)
-		}
-		p.Unlock()
-	}
-}
-
-func TestClientPool(t *testing.T) {
-	testPool(t, 0, time.Minute)
-	testPool(t, 2, time.Minute)
-}

util/pool/options.go

@@ -1,38 +0,0 @@
-package pool
-
-import (
-	"time"
-
-	"go.unistack.org/micro/v3/network/transport"
-)
-
-// Options struct
-type Options struct {
-	Transport transport.Transport
-	TTL       time.Duration
-	Size      int
-}
-
-// Option func signature
-type Option func(*Options)
-
-// Size sets the size
-func Size(i int) Option {
-	return func(o *Options) {
-		o.Size = i
-	}
-}
-
-// Transport sets the transport
-func Transport(t transport.Transport) Option {
-	return func(o *Options) {
-		o.Transport = t
-	}
-}
-
-// TTL specifies ttl
-func TTL(t time.Duration) Option {
-	return func(o *Options) {
-		o.TTL = t
-	}
-}

util/pool/pool.go

@@ -1,38 +0,0 @@
-// Package pool is a connection pool
-package pool
-
-import (
-	"context"
-	"time"
-
-	"go.unistack.org/micro/v3/network/transport"
-)
-
-// Pool is an interface for connection pooling
-type Pool interface {
-	// Close the pool
-	Close() error
-	// Get a connection
-	Get(ctx context.Context, addr string, opts ...transport.DialOption) (Conn, error)
-	// Release the connection
-	Release(c Conn, status error) error
-}
-
-// Conn conn pool interface
-type Conn interface {
-	// unique id of connection
-	ID() string
-	// time it was created
-	Created() time.Time
-	// embedded connection
-	transport.Client
-}
-
-// NewPool creates new connection pool
-func NewPool(opts ...Option) Pool {
-	options := Options{}
-	for _, o := range opts {
-		o(&options)
-	}
-	return newPool(options)
-}

util/time/duration_test.go

@@ -23,7 +23,7 @@ func TestMarshalYAML(t *testing.T) {
 
 func TestUnmarshalYAML(t *testing.T) {
 	type str struct {
-		TTL Duration `yaml:"ttl"`
+		TTL *Duration `yaml:"ttl"`
 	}
 	v := &str{}
 	var err error
@@ -31,14 +31,14 @@ func TestUnmarshalYAML(t *testing.T) {
 	err = yaml.Unmarshal([]byte(`{"ttl":"10ms"}`), v)
 	if err != nil {
 		t.Fatal(err)
-	} else if v.TTL != 10000000 {
+	} else if *(v.TTL) != 10000000 {
 		t.Fatalf("invalid duration %v != 10000000", v.TTL)
 	}
 
 	err = yaml.Unmarshal([]byte(`{"ttl":"1y"}`), v)
 	if err != nil {
 		t.Fatal(err)
-	} else if v.TTL != 31622400000000000 {
+	} else if *(v.TTL) != 31622400000000000 {
 		t.Fatalf("invalid duration %v != 31622400000000000", v.TTL)
 	}
 }