chore(deps): bump golang.org/x/sync

Bumps [golang.org/x/sync](https://github.com/golang/sync) from 0.0.0-20210220032951-036812b2e83c to 0.1.0.
- [Release notes](https://github.com/golang/sync/releases)
- [Commits](https://github.com/golang/sync/commits/v0.1.0)

---
updated-dependencies:
- dependency-name: golang.org/x/sync
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <support@github.com>

.github/dependabot.yml

@@ -11,16 +11,9 @@ updates:
     directory: "/"
     schedule:
       interval: "daily"
-    commit-message:
-      prefix: "chore"
-      include: "scope"
 
   # Maintain dependencies for Golang
   - package-ecosystem: "gomod"
     directory: "/"
     schedule:
       interval: "daily"
-    commit-message:
-      prefix: "chore"
-      include: "scope"
-

.github/workflows/autoapprove.yml

@@ -0,0 +1,20 @@
+name: "autoapprove"
+
+on:
+  pull_request_target:
+    types: [assigned, opened, synchronize, reopened]
+
+permissions:
+  pull-requests: write
+  contents: write
+
+jobs:
+  autoapprove:
+    runs-on: ubuntu-latest
+    steps:
+      - name: approve
+        uses: hmarr/auto-approve-action@v3
+        if: github.actor == 'vtolstov' || github.actor == 'dependabot[bot]'
+        id: approve
+        with:
+          github-token: ${{ secrets.GITHUB_TOKEN }}

.github/workflows/automerge.yml

@@ -0,0 +1,21 @@
+name: "automerge"
+
+on:
+  pull_request_target:
+    types: [assigned, opened, synchronize, reopened]
+
+permissions:
+  pull-requests: write
+  contents: write
+
+jobs:
+  automerge:
+    runs-on: ubuntu-latest
+    if: github.actor == 'vtolstov'
+    steps:
+      - name: merge
+        id: merge
+        run: gh pr merge --auto --merge "$PR_URL"
+        env:
+          PR_URL: ${{github.event.pull_request.html_url}}
+          GITHUB_TOKEN: ${{secrets.TOKEN}}

.github/workflows/build.yml

@@ -3,19 +3,20 @@ on:
  push:
     branches:
     - master
+    - v3
 jobs:
   test:
     name: test
     runs-on: ubuntu-latest
     steps:
     - name: setup
-      uses: actions/setup-go@v2
+      uses: actions/setup-go@v3
       with:
-        go-version: 1.16
+        go-version: 1.17
     - name: checkout
-      uses: actions/checkout@v2
+      uses: actions/checkout@v3
     - name: cache
-      uses: actions/cache@v2
+      uses: actions/cache@v3
       with:
         path: ~/go/pkg/mod
         key: ${{ runner.os }}-go-${{ hashFiles('**/go.sum') }}
@@ -31,9 +32,9 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: checkout
-        uses: actions/checkout@v2
+        uses: actions/checkout@v3
       - name: lint
-        uses: golangci/golangci-lint-action@v2
+        uses: golangci/golangci-lint-action@v3.4.0
         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.

.github/workflows/codeql-analysis.yml

@@ -9,20 +9,24 @@
 # the `language` matrix defined below to confirm you have the correct set of
 # supported CodeQL languages.
 #
-name: "CodeQL"
+name: "codeql"
 
 on:
+  workflow_run:
+    workflows: ["prbuild"]
+    types:
+      - completed
   push:
-    branches: [ master ]
+    branches: [ master, v3 ]
   pull_request:
     # The branches below must be a subset of the branches above
-    branches: [ master ]
+    branches: [ master, v3 ]
   schedule:
     - cron: '34 1 * * 0'
 
 jobs:
   analyze:
-    name: Analyze
+    name: analyze
     runs-on: ubuntu-latest
     permissions:
       actions: read
@@ -38,12 +42,15 @@ jobs:
         # https://docs.github.com/en/free-pro-team@latest/github/finding-security-vulnerabilities-and-errors-in-your-code/configuring-code-scanning#changing-the-languages-that-are-analyzed
 
     steps:
-    - name: Checkout repository
-      uses: actions/checkout@v2
-
+    - name: checkout
+      uses: actions/checkout@v3
+    - name: setup
+      uses: actions/setup-go@v3
+      with:
+        go-version: 1.17
     # Initializes the CodeQL tools for scanning.
-    - name: Initialize CodeQL
-      uses: github/codeql-action/init@v1
+    - name: init
+      uses: github/codeql-action/init@v2
       with:
         languages: ${{ matrix.language }}
         # If you wish to specify custom queries, you can do so here or in a config file.
@@ -53,8 +60,8 @@ jobs:
 
     # Autobuild attempts to build any compiled languages  (C/C++, C#, or Java).
     # If this step fails, then you should remove it and run the build manually (see below)
-    - name: Autobuild
-      uses: github/codeql-action/autobuild@v1
+    - name: autobuild
+      uses: github/codeql-action/autobuild@v2
 
     # ℹ️ Command-line programs to run using the OS shell.
     # 📚 https://git.io/JvXDl
@@ -67,5 +74,5 @@ jobs:
     #   make bootstrap
     #   make release
 
-    - name: Perform CodeQL Analysis
-      uses: github/codeql-action/analyze@v1
+    - name: analyze
+      uses: github/codeql-action/analyze@v2

.github/workflows/dependabot-automerge.yml

@@ -0,0 +1,27 @@
+name: "dependabot-automerge"
+
+on:
+  pull_request_target:
+    types: [assigned, opened, synchronize, reopened]
+
+permissions:
+  pull-requests: write
+  contents: write
+
+jobs:
+  automerge:
+    runs-on: ubuntu-latest
+    if: github.actor == 'dependabot[bot]'
+    steps:
+      - name: metadata
+        id: metadata
+        uses: dependabot/fetch-metadata@v1.3.6
+        with:
+          github-token: "${{ secrets.TOKEN }}"
+      - name: merge
+        id: merge
+        if: ${{contains(steps.metadata.outputs.dependency-names, 'go.unistack.org')}}
+        run: gh pr merge --auto --merge "$PR_URL"
+        env:
+          PR_URL: ${{github.event.pull_request.html_url}}
+          GITHUB_TOKEN: ${{secrets.TOKEN}}

.github/workflows/pr.yml

@@ -3,19 +3,20 @@ on:
   pull_request:
     branches:
     - master
+    - v3
 jobs:
   test:
     name: test
     runs-on: ubuntu-latest
     steps:
     - name: setup
-      uses: actions/setup-go@v2
+      uses: actions/setup-go@v3
       with:
-        go-version: 1.16
+        go-version: 1.17
     - name: checkout
-      uses: actions/checkout@v2
+      uses: actions/checkout@v3
     - name: cache
-      uses: actions/cache@v2
+      uses: actions/cache@v3
       with:
         path: ~/go/pkg/mod
         key: ${{ runner.os }}-go-${{ hashFiles('**/go.sum') }}
@@ -31,9 +32,9 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: checkout
-        uses: actions/checkout@v2
+        uses: actions/checkout@v3
       - name: lint
-        uses: golangci/golangci-lint-action@v2
+        uses: golangci/golangci-lint-action@v3.4.0
         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.

go.mod

@@ -1,13 +1,13 @@
-module github.com/unistack-org/micro-broker-nats/v3
+module go.unistack.org/micro-broker-nats/v3
 
 go 1.16
 
 require (
-	github.com/nats-io/nats-server/v2 v2.5.0 // indirect
-	github.com/nats-io/nats.go v1.12.1
-	github.com/unistack-org/micro-proto v0.0.9 // indirect
-	github.com/unistack-org/micro/v3 v3.7.0
-	golang.org/x/crypto v0.0.0-20210817164053-32db794688a5 // indirect
-	golang.org/x/sync v0.0.0-20210220032951-036812b2e83c
-	golang.org/x/xerrors v0.0.0-20200804184101-5ec99f83aff1 // indirect
+	github.com/golang/protobuf v1.5.2 // indirect
+	github.com/nats-io/nats-server/v2 v2.7.4 // indirect
+	github.com/nats-io/nats.go v1.13.1-0.20220308171302-2f2f6968e98d
+	go.unistack.org/micro/v3 v3.10.14
+	golang.org/x/crypto v0.0.0-20220307211146-efcb8507fb70 // indirect
+	golang.org/x/sync v0.1.0
+	google.golang.org/protobuf v1.28.1 // indirect
 )

go.sum

@@ -1,139 +1,66 @@
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 golang.org/x/crypto v0.0.0-20210314154223-e6e6c4f2bb5b/go.mod h1:T9bdIzuCu7OtxOm1hfPfRQxPLYneinmdGuTeoZ9dtd4=
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nats.go

@@ -1,5 +1,5 @@
 // Package nats provides a NATS broker
-package nats
+package nats // import "go.unistack.org/micro-broker-nats/v3"
 
 import (
 	"context"
@@ -9,12 +9,18 @@ import (
 	"sync"
 
 	nats "github.com/nats-io/nats.go"
-	"github.com/unistack-org/micro/v3/broker"
-	"github.com/unistack-org/micro/v3/logger"
-	"github.com/unistack-org/micro/v3/metadata"
+	"go.unistack.org/micro/v3/broker"
+	"go.unistack.org/micro/v3/logger"
+	"go.unistack.org/micro/v3/metadata"
 	"golang.org/x/sync/errgroup"
 )
 
+var pPool = sync.Pool{
+	New: func() interface{} {
+		return &publication{msg: broker.NewMessage("")}
+	},
+}
+
 type natsBroker struct {
 	sync.Once
 	sync.RWMutex
@@ -33,17 +39,17 @@ type natsBroker struct {
 }
 
 type publication struct {
-	t   string
-	err error
-	m   *broker.Message
+	topic string
+	err   error
+	msg   *broker.Message
 }
 
 func (p *publication) Topic() string {
-	return p.t
+	return p.topic
 }
 
 func (p *publication) Message() *broker.Message {
-	return p.m
+	return p.msg
 }
 
 func (p *publication) Ack() error {
@@ -103,13 +109,15 @@ func (n *natsBroker) setAddrs(addrs []string) []string {
 }
 
 func (n *natsBroker) Connect(ctx context.Context) error {
-	n.Lock()
-	defer n.Unlock()
-
+	n.RLock()
 	if n.connected {
+		n.RUnlock()
 		return nil
 	}
+	n.RUnlock()
 
+	n.Lock()
+	defer n.Unlock()
 	status := nats.CLOSED
 	if n.conn != nil {
 		status = n.conn.Status()
@@ -127,7 +135,7 @@ func (n *natsBroker) Connect(ctx context.Context) error {
 		c, err := opts.Connect()
 		if err != nil {
 			if n.opts.Logger.V(logger.WarnLevel) {
-				n.opts.Logger.Warnf(n.opts.Context, "Error connecting to broker: %v", err)
+				n.opts.Logger.Warnf(n.opts.Context, "error connecting to broker: %v", err)
 			}
 
 			return err
@@ -139,12 +147,20 @@ func (n *natsBroker) Connect(ctx context.Context) error {
 }
 
 func (n *natsBroker) Disconnect(ctx context.Context) error {
+	n.RLock()
+	if !n.connected {
+		n.RUnlock()
+		return nil
+	}
+	n.RUnlock()
+
 	n.Lock()
 	defer n.Unlock()
-
 	// drain the connection if specified
 	if n.drain {
-		n.conn.Drain()
+		if err := n.conn.Drain(); err != nil {
+			return err
+		}
 		n.closeCh <- nil
 	}
 
@@ -186,19 +202,33 @@ func (n *natsBroker) Options() broker.Options {
 	return n.opts
 }
 
-func (n *natsBroker) BatchPublish(ctx context.Context, msg []*broker.Message, opts ...broker.PublishOption) error {
-	msgs := make(map[string][][]byte)
+func (n *natsBroker) BatchPublish(ctx context.Context, p []*broker.Message, opts ...broker.PublishOption) error {
+	var err error
+	msgs := make([]*nats.Msg, len(p))
 	var wg sync.WaitGroup
 
-	wg.Add(len(msg))
+	wg.Add(len(p))
 
-	for _, m := range msg {
-		b, err := n.opts.Codec.Marshal(m)
-		if err != nil {
-			return err
+	options := broker.NewPublishOptions(opts...)
+
+	for _, m := range p {
+		rec := &nats.Msg{}
+		rec.Subject, _ = m.Header.Get(metadata.HeaderTopic)
+		if options.BodyOnly {
+			rec.Data = m.Body
+		} else if n.opts.Codec.String() == "noop" {
+			rec.Data = m.Body
+			rec.Header = make(nats.Header, len(m.Header))
+			for k, v := range m.Header {
+				rec.Header.Add(k, v)
+			}
+		} else {
+			rec.Data, err = n.opts.Codec.Marshal(m)
+			if err != nil {
+				return err
+			}
 		}
-		topic, _ := m.Header.Get(metadata.HeaderTopic)
-		msgs[topic] = append(msgs[topic], b)
+		msgs = append(msgs, rec)
 	}
 
 	n.RLock()
@@ -206,12 +236,11 @@ func (n *natsBroker) BatchPublish(ctx context.Context, msg []*broker.Message, op
 
 	g := errgroup.Group{}
 
-	for topic, ms := range msgs {
-		for _, m := range ms {
-			g.Go(func() error {
-				return n.conn.Publish(topic, m)
-			})
-		}
+	for _, ms := range msgs {
+		m := ms
+		g.Go(func() error {
+			return n.conn.PublishMsg(m)
+		})
 	}
 
 	return g.Wait()
@@ -219,9 +248,6 @@ func (n *natsBroker) BatchPublish(ctx context.Context, msg []*broker.Message, op
 
 func (n *natsBroker) Publish(ctx context.Context, topic string, msg *broker.Message, opts ...broker.PublishOption) error {
 	var err error
-	var buf []byte
-
-	options := broker.NewPublishOptions(opts...)
 
 	n.RLock()
 	if n.conn == nil {
@@ -230,10 +256,20 @@ func (n *natsBroker) Publish(ctx context.Context, topic string, msg *broker.Mess
 	}
 	n.RUnlock()
 
+	options := broker.NewPublishOptions(opts...)
+
+	rec := &nats.Msg{}
+	rec.Subject, _ = msg.Header.Get(metadata.HeaderTopic)
 	if options.BodyOnly {
-		buf = msg.Body
+		rec.Data = msg.Body
+	} else if n.opts.Codec.String() == "noop" {
+		rec.Data = msg.Body
+		rec.Header = make(nats.Header, len(msg.Header))
+		for k, v := range msg.Header {
+			rec.Header.Add(k, v)
+		}
 	} else {
-		buf, err = n.opts.Codec.Marshal(msg)
+		rec.Data, err = n.opts.Codec.Marshal(msg)
 		if err != nil {
 			return err
 		}
@@ -241,7 +277,8 @@ func (n *natsBroker) Publish(ctx context.Context, topic string, msg *broker.Mess
 
 	n.RLock()
 	defer n.RUnlock()
-	return n.conn.Publish(topic, buf)
+
+	return n.conn.PublishMsg(rec)
 }
 
 func (n *natsBroker) BatchSubscribe(ctx context.Context, topic string, handler broker.BatchHandler, opts ...broker.SubscribeOption) (broker.Subscriber, error) {
@@ -256,29 +293,42 @@ func (n *natsBroker) Subscribe(ctx context.Context, topic string, handler broker
 	}
 	n.RUnlock()
 
-	opt := broker.NewSubscribeOptions(opts...)
+	options := broker.NewSubscribeOptions(opts...)
+
+	eh := n.opts.ErrorHandler
+	if options.ErrorHandler != nil {
+		eh = options.ErrorHandler
+	}
 
 	fn := func(msg *nats.Msg) {
-		m := &broker.Message{}
-		pub := &publication{t: msg.Subject}
+		pub := pPool.Get().(*publication)
+		pub.msg.Header = nil
+		pub.msg.Body = nil
+		pub.topic = msg.Subject
+		pub.err = nil
 
-		eh := n.opts.ErrorHandler
-		if opt.ErrorHandler != nil {
-			eh = opt.ErrorHandler
-		}
-		err := n.opts.Codec.Unmarshal(msg.Data, &m)
-		pub.err = err
-		pub.m = m
-		if err != nil {
-			pub.m.Body = msg.Data
-			if eh != nil {
-				eh(pub)
-			} else {
-				if n.opts.Logger.V(logger.ErrorLevel) {
-					n.opts.Logger.Error(n.opts.Context, err)
-				}
+		if options.BodyOnly {
+			pub.msg.Body = msg.Data
+		} else if n.opts.Codec.String() == "noop" {
+			pub.msg.Body = msg.Data
+			pub.msg.Header = metadata.New(len(msg.Header))
+			for k, v := range msg.Header {
+				pub.msg.Header.Set(k, strings.Join(v, ","))
+			}
+		} else {
+			err := n.opts.Codec.Unmarshal(msg.Data, pub.msg)
+			pub.err = err
+			if err != nil {
+				pub.msg.Body = msg.Data
+				if eh != nil {
+					eh(pub)
+				} else {
+					if n.opts.Logger.V(logger.ErrorLevel) {
+						n.opts.Logger.Error(n.opts.Context, err)
+					}
+				}
+				return
 			}
-			return
 		}
 		if err := handler(pub); err != nil {
 			pub.err = err
@@ -296,8 +346,8 @@ func (n *natsBroker) Subscribe(ctx context.Context, topic string, handler broker
 	var err error
 
 	n.RLock()
-	if len(opt.Group) > 0 {
-		sub, err = n.conn.QueueSubscribe(topic, opt.Group, fn)
+	if len(options.Group) > 0 {
+		sub, err = n.conn.QueueSubscribe(topic, options.Group, fn)
 	} else {
 		sub, err = n.conn.Subscribe(topic, fn)
 	}
@@ -305,7 +355,7 @@ func (n *natsBroker) Subscribe(ctx context.Context, topic string, handler broker
 	if err != nil {
 		return nil, err
 	}
-	return &subscriber{s: sub, opts: opt}, nil
+	return &subscriber{s: sub, opts: options}, nil
 }
 
 func (n *natsBroker) String() string {
@@ -366,9 +416,13 @@ func (n *natsBroker) onDisconnectedError(conn *nats.Conn, err error) {
 	n.closeCh <- err
 }
 
-func NewBroker(opts ...broker.Option) broker.Broker {
+func NewBroker(opts ...broker.Option) *natsBroker {
 	options := broker.NewOptions(opts...)
 
+	if options.Codec.String() != "noop" {
+		options.Logger.Infof(options.Context, "broker codec not noop, disable plain nats headers usage")
+	}
+
 	n := &natsBroker{
 		opts: options,
 	}

nats_test.go

@@ -5,7 +5,7 @@ import (
 	"testing"
 
 	nats "github.com/nats-io/nats.go"
-	"github.com/unistack-org/micro/v3/broker"
+	"go.unistack.org/micro/v3/broker"
 )
 
 var addrTestCases = []struct {

options.go

@@ -2,7 +2,7 @@ package nats
 
 import (
 	nats "github.com/nats-io/nats.go"
-	"github.com/unistack-org/micro/v3/broker"
+	"go.unistack.org/micro/v3/broker"
 )
 
 type optionsKey struct{}