Revert "feat: enable retry for zrpc (#1237)" (#1245)

This reverts commit 09eb53f308.

.github/FUNDING.yml

@@ -0,0 +1,12 @@
+# These are supported funding model platforms
+
+github: # Replace with up to 4 GitHub Sponsors-enabled usernames e.g., [user1, user2]
+patreon: # Replace with a single Patreon username
+open_collective: # Replace with a single Open Collective username
+ko_fi: # Replace with a single Ko-fi username
+tidelift: # Replace with a single Tidelift platform-name/package-name e.g., npm/babel
+community_bridge: # Replace with a single Community Bridge project-name e.g., cloud-foundry
+liberapay: # Replace with a single Liberapay username
+issuehunt: # Replace with a single IssueHunt username
+otechie: # Replace with a single Otechie username
+custom: # https://gitee.com/kevwan/static/raw/master/images/sponsor.jpg

.github/ISSUE_TEMPLATE/bug_report.md

@@ -0,0 +1,40 @@
+---
+name: Bug report
+about: Create a report to help us improve
+title: ''
+labels: ''
+assignees: ''
+
+---
+
+**Describe the bug**
+A clear and concise description of what the bug is.
+
+**To Reproduce**
+Steps to reproduce the behavior, if applicable:
+
+1. The code is
+
+   ```go
+   
+   ```
+
+2. The error is
+
+   ```
+   
+   ```
+
+**Expected behavior**
+A clear and concise description of what you expected to happen.
+
+**Screenshots**
+If applicable, add screenshots to help explain your problem.
+
+**Environments (please complete the following information):**
+ - OS: [e.g. Linux]
+ - go-zero version [e.g. 1.2.1]
+ - goctl version [e.g. 1.2.1, optional]
+
+**More description**
+Add any other context about the problem here.

.github/ISSUE_TEMPLATE/feature_request.md

@@ -0,0 +1,20 @@
+---
+name: Feature request
+about: Suggest an idea for this project
+title: ''
+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.
+
+**Describe alternatives you've considered**
+A clear and concise description of any alternative solutions or features you've considered.
+
+**Additional context**
+Add any other context or screenshots about the feature request here.

.github/ISSUE_TEMPLATE/question.md

@@ -0,0 +1,10 @@
+---
+name: Question
+about: Ask a question on using go-zero or goctl
+title: ''
+labels: ''
+assignees: ''
+
+---
+
+

.github/workflows/go.yml

@@ -25,6 +25,12 @@ jobs:
       run: |
         go get -v -t -d ./...
 
+    - name: Lint
+      run: |
+        go vet -stdmethods=false $(go list ./...)
+        go install mvdan.cc/gofumpt@latest
+        test -z "$(gofumpt -s -l -extra .)" || echo "Please run 'gofumpt -l -w -extra .'"
+
     - name: Test
       run: go test -race -coverprofile=coverage.txt -covermode=atomic ./...
 

.github/workflows/reviewdog.yml

@@ -0,0 +1,19 @@
+name: reviewdog
+on: [pull_request]
+jobs:
+  staticcheck:
+    name: runner / staticcheck
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v2
+      - uses: reviewdog/action-staticcheck@v1
+        with:
+          github_token: ${{ secrets.github_token }}
+          # Change reviewdog reporter if you need [github-pr-check,github-check,github-pr-review].
+          reporter: github-pr-review
+          # Report all results.
+          filter_mode: nofilter
+          # Exit with 1 when it find at least one finding.
+          fail_on_error: true
+          # Set staticcheck flags
+          staticcheck_flags: -checks=inherit,-SA1019,-SA1029,-SA5008

.gitignore

@@ -15,8 +15,8 @@
 **/.DS_Store
 **/logs
 
-# ignore adhoc test code
+# for test purpose
-**/adhoc
+adhoc
 
 # gitlab ci
 .cache

ROADMAP.md

@@ -5,17 +5,23 @@ Community and contributor involvement is vital for successfully implementing all
 We hope that the items listed below will inspire further engagement from the community to keep go-zero progressing and shipping exciting and valuable features.
 
 ## 2021 Q2
-- Support TLS in redis connections
+- [x] Support service discovery through K8S client api
-- Support service discovery through K8S watch api
+- [x] Log full sql statements for easier sql problem solving
-- Log full sql statements for easier sql problem solving
 
 ## 2021 Q3
-- Support `goctl mock` command to start a mocking server with given `.api` file
+- [x] Support `goctl model pg` to support PostgreSQL code generation
-- Adapt builtin tracing mechanism to opentracing solutions
+- [x] Adapt builtin tracing mechanism to opentracing solutions
-- Support `goctl model pg` to support PostgreSQL code generation
 
 ## 2021 Q4
-- Support `goctl doctor` command to report potential issues for given service
+- [x] Support `username/password` authentication in ETCD
-- Support `context` in redis related methods for timeout and tracing
+- [x] Support `SSL/TLS` in `zRPC`
-- Support `context` in sql related methods for timeout and tracing
+- [x] Support `TLS` in redis connections
-- Support `context` in mongodb related methods for timeout and tracing
+- [ ] Support `retry strategies` in `zRPC`
+
+## 2022
+- [ ] Support `goctl mock` command to start a mocking server with given `.api` file
+- [ ] Add `httpx.Client` with governance, like circuit breaker etc.
+- [ ] Support `goctl doctor` command to report potential issues for given service
+- [ ] Support `context` in redis related methods for timeout and tracing
+- [ ] Support `context` in sql related methods for timeout and tracing
+- [ ] Support `context` in mongodb related methods for timeout and tracing

core/discov/accountregistry.go

@@ -0,0 +1,7 @@
+package discov
+
+import "github.com/tal-tech/go-zero/core/discov/internal"
+
+func RegisterAccount(endpoints []string, user, pass string) {
+	internal.AddAccount(endpoints, user, pass)
+}

core/discov/accountregistry_test.go

@@ -0,0 +1,21 @@
+package discov
+
+import (
+	"testing"
+
+	"github.com/stretchr/testify/assert"
+	"github.com/tal-tech/go-zero/core/discov/internal"
+	"github.com/tal-tech/go-zero/core/stringx"
+)
+
+func TestRegisterAccount(t *testing.T) {
+	endpoints := []string{
+		"localhost:2379",
+	}
+	user := "foo" + stringx.Rand()
+	RegisterAccount(endpoints, user, "bar")
+	account, ok := internal.GetAccount(endpoints)
+	assert.True(t, ok)
+	assert.Equal(t, user, account.User)
+	assert.Equal(t, "bar", account.Pass)
+}

core/discov/config.go

@@ -6,6 +6,13 @@ import "errors"
 type EtcdConf struct {
 	Hosts []string
 	Key   string
+	User  string `json:",optional"`
+	Pass  string `json:",optional"`
+}
+
+// HasAccount returns if account provided.
+func (c EtcdConf) HasAccount() bool {
+	return len(c.User) > 0 && len(c.Pass) > 0
 }
 
 // Validate validates c.

core/discov/config_test.go

@@ -44,3 +44,39 @@ func TestConfig(t *testing.T) {
 		}
 	}
 }
+
+func TestEtcdConf_HasAccount(t *testing.T) {
+	tests := []struct {
+		EtcdConf
+		hasAccount bool
+	}{
+		{
+			EtcdConf: EtcdConf{
+				Hosts: []string{"any"},
+				Key:   "key",
+			},
+			hasAccount: false,
+		},
+		{
+			EtcdConf: EtcdConf{
+				Hosts: []string{"any"},
+				Key:   "key",
+				User:  "foo",
+			},
+			hasAccount: false,
+		},
+		{
+			EtcdConf: EtcdConf{
+				Hosts: []string{"any"},
+				Key:   "key",
+				User:  "foo",
+				Pass:  "bar",
+			},
+			hasAccount: true,
+		},
+	}
+
+	for _, test := range tests {
+		assert.Equal(t, test.hasAccount, test.EtcdConf.HasAccount())
+	}
+}

core/discov/internal/accountmanager.go

@@ -0,0 +1,31 @@
+package internal
+
+import "sync"
+
+type Account struct {
+	User string
+	Pass string
+}
+
+var (
+	accounts = make(map[string]Account)
+	lock     sync.RWMutex
+)
+
+func AddAccount(endpoints []string, user, pass string) {
+	lock.Lock()
+	defer lock.Unlock()
+
+	accounts[getClusterKey(endpoints)] = Account{
+		User: user,
+		Pass: pass,
+	}
+}
+
+func GetAccount(endpoints []string) (Account, bool) {
+	lock.RLock()
+	defer lock.RUnlock()
+
+	account, ok := accounts[getClusterKey(endpoints)]
+	return account, ok
+}

core/discov/internal/accountmanager_test.go

@@ -0,0 +1,34 @@
+package internal
+
+import (
+	"testing"
+
+	"github.com/stretchr/testify/assert"
+	"github.com/tal-tech/go-zero/core/stringx"
+)
+
+func TestAccount(t *testing.T) {
+	endpoints := []string{
+		"192.168.0.2:2379",
+		"192.168.0.3:2379",
+		"192.168.0.4:2379",
+	}
+	username := "foo" + stringx.Rand()
+	password := "bar"
+	anotherPassword := "any"
+
+	_, ok := GetAccount(endpoints)
+	assert.False(t, ok)
+
+	AddAccount(endpoints, username, password)
+	account, ok := GetAccount(endpoints)
+	assert.True(t, ok)
+	assert.Equal(t, username, account.User)
+	assert.Equal(t, password, account.Pass)
+
+	AddAccount(endpoints, username, anotherPassword)
+	account, ok = GetAccount(endpoints)
+	assert.True(t, ok)
+	assert.Equal(t, username, account.User)
+	assert.Equal(t, anotherPassword, account.Pass)
+}

core/discov/internal/registry.go

@@ -302,14 +302,20 @@ func (c *cluster) watchConnState(cli EtcdClient) {
 
 // DialClient dials an etcd cluster with given endpoints.
 func DialClient(endpoints []string) (EtcdClient, error) {
-	return clientv3.New(clientv3.Config{
+	cfg := clientv3.Config{
 		Endpoints:            endpoints,
 		AutoSyncInterval:     autoSyncInterval,
 		DialTimeout:          DialTimeout,
 		DialKeepAliveTime:    dialKeepAliveTime,
 		DialKeepAliveTimeout: DialTimeout,
 		RejectOldCluster:     true,
-	})
+	}
+	if account, ok := GetAccount(endpoints); ok {
+		cfg.Username = account.User
+		cfg.Password = account.Pass
+	}
+
+	return clientv3.New(cfg)
 }
 
 func getClusterKey(endpoints []string) string {

core/discov/internal/registry_test.go

@@ -33,6 +33,7 @@ func setMockClient(cli EtcdClient) func() {
 }
 
 func TestGetCluster(t *testing.T) {
+	AddAccount([]string{"first"}, "foo", "bar")
 	c1 := GetRegistry().getCluster([]string{"first"})
 	c2 := GetRegistry().getCluster([]string{"second"})
 	c3 := GetRegistry().getCluster([]string{"first"})

core/discov/internal/statewatcher_mock.go

@@ -6,9 +6,10 @@ package internal
 
 import (
 	context "context"
+	reflect "reflect"
+
 	gomock "github.com/golang/mock/gomock"
 	connectivity "google.golang.org/grpc/connectivity"
-	reflect "reflect"
 )
 
 // MocketcdConn is a mock of etcdConn interface

core/discov/internal/updatelistener_mock.go

@@ -5,8 +5,9 @@
 package internal
 
 import (
-	gomock "github.com/golang/mock/gomock"
 	reflect "reflect"
+
+	gomock "github.com/golang/mock/gomock"
 )
 
 // MockUpdateListener is a mock of UpdateListener interface

core/discov/publisher.go

@@ -11,8 +11,8 @@ import (
 )
 
 type (
-	// PublisherOption defines the method to customize a Publisher.
+	// PubOption defines the method to customize a Publisher.
-	PublisherOption func(client *Publisher)
+	PubOption func(client *Publisher)
 
 	// A Publisher can be used to publish the value to an etcd cluster on the given key.
 	Publisher struct {
@@ -32,7 +32,7 @@ type (
 // endpoints is the hosts of the etcd cluster.
 // key:value are a pair to be published.
 // opts are used to customize the Publisher.
-func NewPublisher(endpoints []string, key, value string, opts ...PublisherOption) *Publisher {
+func NewPublisher(endpoints []string, key, value string, opts ...PubOption) *Publisher {
 	publisher := &Publisher{
 		endpoints:  endpoints,
 		key:        key,
@@ -145,8 +145,15 @@ func (p *Publisher) revoke(cli internal.EtcdClient) {
 	}
 }
 
+// WithPubEtcdAccount provides the etcd username/password.
+func WithPubEtcdAccount(user, pass string) PubOption {
+	return func(pub *Publisher) {
+		internal.AddAccount(pub.endpoints, user, pass)
+	}
+}
+
 // WithId customizes a Publisher with the id.
-func WithId(id int64) PublisherOption {
+func WithId(id int64) PubOption {
 	return func(publisher *Publisher) {
 		publisher.id = id
 	}

core/discov/publisher_test.go

@@ -11,6 +11,7 @@ import (
 	"github.com/tal-tech/go-zero/core/discov/internal"
 	"github.com/tal-tech/go-zero/core/lang"
 	"github.com/tal-tech/go-zero/core/logx"
+	"github.com/tal-tech/go-zero/core/stringx"
 	clientv3 "go.etcd.io/etcd/client/v3"
 )
 
@@ -30,7 +31,8 @@ func TestPublisher_register(t *testing.T) {
 		ID: id,
 	}, nil)
 	cli.EXPECT().Put(gomock.Any(), makeEtcdKey("thekey", id), "thevalue", gomock.Any())
-	pub := NewPublisher(nil, "thekey", "thevalue")
+	pub := NewPublisher(nil, "thekey", "thevalue",
+		WithPubEtcdAccount(stringx.Rand(), "bar"))
 	_, err := pub.register(cli)
 	assert.Nil(t, err)
 }

core/discov/subscriber.go

@@ -9,16 +9,14 @@ import (
 )
 
 type (
-	subOptions struct {
-		exclusive bool
-	}
-
 	// SubOption defines the method to customize a Subscriber.
-	SubOption func(opts *subOptions)
+	SubOption func(sub *Subscriber)
 
 	// A Subscriber is used to subscribe the given key on a etcd cluster.
 	Subscriber struct {
-		items *container
+		endpoints []string
+		exclusive bool
+		items     *container
 	}
 )
 
@@ -27,14 +25,14 @@ type (
 // key is the key to subscribe.
 // opts are used to customize the Subscriber.
 func NewSubscriber(endpoints []string, key string, opts ...SubOption) (*Subscriber, error) {
-	var subOpts subOptions
-	for _, opt := range opts {
-		opt(&subOpts)
-	}
-
 	sub := &Subscriber{
-		items: newContainer(subOpts.exclusive),
+		endpoints: endpoints,
 	}
+	for _, opt := range opts {
+		opt(sub)
+	}
+	sub.items = newContainer(sub.exclusive)
+
 	if err := internal.GetRegistry().Monitor(endpoints, key, sub.items); err != nil {
 		return nil, err
 	}
@@ -55,8 +53,14 @@ func (s *Subscriber) Values() []string {
 // Exclusive means that key value can only be 1:1,
 // which means later added value will remove the keys associated with the same value previously.
 func Exclusive() SubOption {
-	return func(opts *subOptions) {
+	return func(sub *Subscriber) {
-		opts.exclusive = true
+		sub.exclusive = true
+	}
+}
+
+func WithSubEtcdAccount(user, pass string) SubOption {
+	return func(sub *Subscriber) {
+		internal.AddAccount(sub.endpoints, user, pass)
 	}
 }
 

core/discov/subscriber_test.go

@@ -6,6 +6,7 @@ import (
 
 	"github.com/stretchr/testify/assert"
 	"github.com/tal-tech/go-zero/core/discov/internal"
+	"github.com/tal-tech/go-zero/core/stringx"
 )
 
 const (
@@ -201,11 +202,9 @@ func TestContainer(t *testing.T) {
 }
 
 func TestSubscriber(t *testing.T) {
-	var opt subOptions
-	Exclusive()(&opt)
-
 	sub := new(Subscriber)
-	sub.items = newContainer(opt.exclusive)
+	Exclusive()(sub)
+	sub.items = newContainer(sub.exclusive)
 	var count int32
 	sub.AddListener(func() {
 		atomic.AddInt32(&count, 1)
@@ -214,3 +213,15 @@ func TestSubscriber(t *testing.T) {
 	assert.Empty(t, sub.Values())
 	assert.Equal(t, int32(1), atomic.LoadInt32(&count))
 }
+
+func TestWithSubEtcdAccount(t *testing.T) {
+	endpoints := []string{"localhost:2379"}
+	user := stringx.Rand()
+	WithSubEtcdAccount(user, "bar")(&Subscriber{
+		endpoints: endpoints,
+	})
+	account, ok := internal.GetAccount(endpoints)
+	assert.True(t, ok)
+	assert.Equal(t, user, account.User)
+	assert.Equal(t, "bar", account.Pass)
+}

core/errorx/atomicerror.go

@@ -9,7 +9,9 @@ type AtomicError struct {
 
 // Set sets the error.
 func (ae *AtomicError) Set(err error) {
-	ae.err.Store(err)
+	if err != nil {
+		ae.err.Store(err)
+	}
 }
 
 // Load returns the error.

core/errorx/atomicerror_test.go

@@ -17,6 +17,15 @@ func TestAtomicError(t *testing.T) {
 	assert.Equal(t, errDummy, err.Load())
 }
 
+func TestAtomicErrorSetNil(t *testing.T) {
+	var (
+		errNil error
+		err    AtomicError
+	)
+	err.Set(errNil)
+	assert.Equal(t, errNil, err.Load())
+}
+
 func TestAtomicErrorNil(t *testing.T) {
 	var err AtomicError
 	assert.Nil(t, err.Load())

core/fs/files.go

@@ -1,3 +1,4 @@
+//go:build linux || darwin
 // +build linux darwin
 
 package fs

core/fx/stream_test.go

@@ -395,16 +395,16 @@ func assetEqual(t *testing.T, except, data interface{}) {
 
 func TestStream_AnyMach(t *testing.T) {
 	assetEqual(t, false, Just(1, 2, 3).AnyMach(func(item interface{}) bool {
-		return 4 == item.(int)
+		return item.(int) == 4
 	}))
 	assetEqual(t, false, Just(1, 2, 3).AnyMach(func(item interface{}) bool {
-		return 0 == item.(int)
+		return item.(int) == 0
 	}))
 	assetEqual(t, true, Just(1, 2, 3).AnyMach(func(item interface{}) bool {
-		return 2 == item.(int)
+		return item.(int) == 2
 	}))
 	assetEqual(t, true, Just(1, 2, 3).AnyMach(func(item interface{}) bool {
-		return 2 == item.(int)
+		return item.(int) == 2
 	}))
 }
 

core/hash/consistenthash_test.go

@@ -74,12 +74,12 @@ func TestConsistentHashIncrementalTransfer(t *testing.T) {
 		laterCh := create()
 		laterCh.AddWithWeight(node, 10*(i+1))
 
-		for i := 0; i < requestSize; i++ {
+		for j := 0; j < requestSize; j++ {
-			key, ok := laterCh.Get(requestSize + i)
+			key, ok := laterCh.Get(requestSize + j)
 			assert.True(t, ok)
 			assert.NotNil(t, key)
 			value := key.(string)
-			assert.True(t, value == keys[i] || value == node)
+			assert.True(t, value == keys[j] || value == node)
 		}
 	}
 }

core/hash/hash_test.go

@@ -20,6 +20,11 @@ func TestMd5(t *testing.T) {
 	assert.Equal(t, md5Digest, actual)
 }
 
+func TestMd5Hex(t *testing.T) {
+	actual := Md5Hex([]byte(text))
+	assert.Equal(t, md5Digest, actual)
+}
+
 func BenchmarkHashFnv(b *testing.B) {
 	for i := 0; i < b.N; i++ {
 		h := fnv.New32()

core/jsontype/time_test.go

@@ -5,6 +5,7 @@ import (
 	"testing"
 	"time"
 
+	"github.com/globalsign/mgo/bson"
 	"github.com/stretchr/testify/assert"
 )
 
@@ -106,3 +107,20 @@ func TestMilliTime_UnmarshalJSON(t *testing.T) {
 		})
 	}
 }
+
+func TestUnmarshalWithError(t *testing.T) {
+	var mt MilliTime
+	assert.NotNil(t, mt.UnmarshalJSON([]byte("hello")))
+}
+
+func TestSetBSON(t *testing.T) {
+	data, err := bson.Marshal(time.Now())
+	assert.Nil(t, err)
+
+	var raw bson.Raw
+	assert.Nil(t, bson.Unmarshal(data, &raw))
+
+	var mt MilliTime
+	assert.Nil(t, mt.SetBSON(raw))
+	assert.NotNil(t, mt.SetBSON(bson.Raw{}))
+}

core/limit/tokenlimit_test.go

@@ -24,7 +24,7 @@ func TestTokenLimit_Rescue(t *testing.T) {
 		rate  = 5
 		burst = 10
 	)
-	l := NewTokenLimiter(rate, burst, redis.NewRedis(s.Addr(), redis.NodeType), "tokenlimit")
+	l := NewTokenLimiter(rate, burst, redis.New(s.Addr()), "tokenlimit")
 	s.Close()
 
 	var allowed int

core/logx/limitedexecutor_test.go

@@ -0,0 +1,62 @@
+package logx
+
+import (
+	"sync/atomic"
+	"testing"
+	"time"
+
+	"github.com/stretchr/testify/assert"
+	"github.com/tal-tech/go-zero/core/timex"
+)
+
+func TestLimitedExecutor_logOrDiscard(t *testing.T) {
+	tests := []struct {
+		name      string
+		threshold time.Duration
+		lastTime  time.Duration
+		discarded uint32
+		executed  bool
+	}{
+		{
+			name:     "nil executor",
+			executed: true,
+		},
+		{
+			name:      "regular",
+			threshold: time.Hour,
+			lastTime:  timex.Now(),
+			discarded: 10,
+			executed:  false,
+		},
+		{
+			name:      "slow",
+			threshold: time.Duration(1),
+			lastTime:  -1000,
+			discarded: 10,
+			executed:  true,
+		},
+	}
+
+	for _, test := range tests {
+		test := test
+		t.Run(test.name, func(t *testing.T) {
+			t.Parallel()
+
+			executor := newLimitedExecutor(0)
+			executor.threshold = test.threshold
+			executor.discarded = test.discarded
+			executor.lastTime.Set(test.lastTime)
+
+			var run int32
+			executor.logOrDiscard(func() {
+				atomic.AddInt32(&run, 1)
+			})
+			if test.executed {
+				assert.Equal(t, int32(1), atomic.LoadInt32(&run))
+			} else {
+				assert.Equal(t, int32(0), atomic.LoadInt32(&run))
+				assert.Equal(t, test.discarded+1, atomic.LoadUint32(&executor.discarded))
+			}
+		})
+	}
+}

core/logx/rotatelogger.go

@@ -47,7 +47,6 @@ type (
 		done     chan lang.PlaceholderType
 		rule     RotateRule
 		compress bool
-		keepDays int
 		// can't use threading.RoutineGroup because of cycle import
 		waitGroup sync.WaitGroup
 		closeOnce sync.Once

core/logx/rotatelogger_test.go

@@ -3,6 +3,7 @@ package logx
 import (
 	"os"
 	"path/filepath"
+	"syscall"
 	"testing"
 	"time"
 
@@ -97,7 +98,13 @@ func TestRotateLoggerRotate(t *testing.T) {
 		}()
 	}
 	err = logger.rotate()
-	assert.Nil(t, err)
+	switch v := err.(type) {
+	case *os.LinkError:
+		// avoid rename error on docker container
+		assert.Equal(t, syscall.EXDEV, v.Err)
+	default:
+		assert.Nil(t, err)
+	}
 }
 
 func TestRotateLoggerWrite(t *testing.T) {

core/logx/tracelogger.go

@@ -7,7 +7,6 @@ import (
 	"time"
 
 	"github.com/tal-tech/go-zero/core/timex"
-	"github.com/tal-tech/go-zero/core/trace/tracespec"
 	"go.opentelemetry.io/otel/trace"
 )
 
@@ -94,29 +93,19 @@ func WithContext(ctx context.Context) Logger {
 }
 
 func spanIdFromContext(ctx context.Context) string {
-	span := trace.SpanFromContext(ctx)
+	spanCtx := trace.SpanContextFromContext(ctx)
-	if span.IsRecording() {
+	if spanCtx.HasSpanID() {
-		return span.SpanContext().SpanID().String()
+		return spanCtx.SpanID().String()
 	}
 
-	t, ok := ctx.Value(tracespec.TracingKey).(tracespec.Trace)
+	return ""
-	if !ok {
-		return ""
-	}
-
-	return t.SpanId()
 }
 
 func traceIdFromContext(ctx context.Context) string {
-	span := trace.SpanFromContext(ctx)
+	spanCtx := trace.SpanContextFromContext(ctx)
-	if span.IsRecording() {
+	if spanCtx.HasTraceID() {
-		return span.SpanContext().SpanID().String()
+		return spanCtx.TraceID().String()
 	}
 
-	t, ok := ctx.Value(tracespec.TracingKey).(tracespec.Trace)
+	return ""
-	if !ok {
-		return ""
-	}
-
-	return t.TraceId()
 }

core/logx/tracelogger_test.go

@@ -9,71 +9,90 @@ import (
 	"time"
 
 	"github.com/stretchr/testify/assert"
-	"github.com/tal-tech/go-zero/core/trace/tracespec"
+	"go.opentelemetry.io/otel"
+	sdktrace "go.opentelemetry.io/otel/sdk/trace"
 )
 
 const (
-	mockTraceID = "mock-trace-id"
+	traceKey = "trace"
-	mockSpanID  = "mock-span-id"
+	spanKey  = "span"
 )
 
-var mock tracespec.Trace = new(mockTrace)
-
 func TestTraceLog(t *testing.T) {
 	var buf mockWriter
 	atomic.StoreUint32(&initialized, 1)
-	ctx := context.WithValue(context.Background(), tracespec.TracingKey, mock)
+	otp := otel.GetTracerProvider()
+	tp := sdktrace.NewTracerProvider(sdktrace.WithSampler(sdktrace.AlwaysSample()))
+	otel.SetTracerProvider(tp)
+	defer otel.SetTracerProvider(otp)
+
+	ctx, _ := tp.Tracer("foo").Start(context.Background(), "bar")
 	WithContext(ctx).(*traceLogger).write(&buf, levelInfo, testlog)
-	assert.True(t, strings.Contains(buf.String(), mockTraceID))
+	assert.True(t, strings.Contains(buf.String(), traceKey))
-	assert.True(t, strings.Contains(buf.String(), mockSpanID))
+	assert.True(t, strings.Contains(buf.String(), spanKey))
 }
 
 func TestTraceError(t *testing.T) {
 	var buf mockWriter
 	atomic.StoreUint32(&initialized, 1)
 	errorLog = newLogWriter(log.New(&buf, "", flags))
-	ctx := context.WithValue(context.Background(), tracespec.TracingKey, mock)
+	otp := otel.GetTracerProvider()
+	tp := sdktrace.NewTracerProvider(sdktrace.WithSampler(sdktrace.AlwaysSample()))
+	otel.SetTracerProvider(tp)
+	defer otel.SetTracerProvider(otp)
+
+	ctx, _ := tp.Tracer("foo").Start(context.Background(), "bar")
 	l := WithContext(ctx).(*traceLogger)
 	SetLevel(InfoLevel)
 	l.WithDuration(time.Second).Error(testlog)
-	assert.True(t, strings.Contains(buf.String(), mockTraceID))
+	assert.True(t, strings.Contains(buf.String(), traceKey))
-	assert.True(t, strings.Contains(buf.String(), mockSpanID))
+	assert.True(t, strings.Contains(buf.String(), spanKey))
 	buf.Reset()
 	l.WithDuration(time.Second).Errorf(testlog)
-	assert.True(t, strings.Contains(buf.String(), mockTraceID))
+	assert.True(t, strings.Contains(buf.String(), traceKey))
-	assert.True(t, strings.Contains(buf.String(), mockSpanID))
+	assert.True(t, strings.Contains(buf.String(), spanKey))
 }
 
 func TestTraceInfo(t *testing.T) {
 	var buf mockWriter
 	atomic.StoreUint32(&initialized, 1)
 	infoLog = newLogWriter(log.New(&buf, "", flags))
-	ctx := context.WithValue(context.Background(), tracespec.TracingKey, mock)
+	otp := otel.GetTracerProvider()
+	tp := sdktrace.NewTracerProvider(sdktrace.WithSampler(sdktrace.AlwaysSample()))
+	otel.SetTracerProvider(tp)
+	defer otel.SetTracerProvider(otp)
+
+	ctx, _ := tp.Tracer("foo").Start(context.Background(), "bar")
 	l := WithContext(ctx).(*traceLogger)
 	SetLevel(InfoLevel)
 	l.WithDuration(time.Second).Info(testlog)
-	assert.True(t, strings.Contains(buf.String(), mockTraceID))
+	assert.True(t, strings.Contains(buf.String(), traceKey))
-	assert.True(t, strings.Contains(buf.String(), mockSpanID))
+	assert.True(t, strings.Contains(buf.String(), spanKey))
 	buf.Reset()
 	l.WithDuration(time.Second).Infof(testlog)
-	assert.True(t, strings.Contains(buf.String(), mockTraceID))
+	assert.True(t, strings.Contains(buf.String(), traceKey))
-	assert.True(t, strings.Contains(buf.String(), mockSpanID))
+	assert.True(t, strings.Contains(buf.String(), spanKey))
 }
 
 func TestTraceSlow(t *testing.T) {
 	var buf mockWriter
 	atomic.StoreUint32(&initialized, 1)
 	slowLog = newLogWriter(log.New(&buf, "", flags))
-	ctx := context.WithValue(context.Background(), tracespec.TracingKey, mock)
+	otp := otel.GetTracerProvider()
+	tp := sdktrace.NewTracerProvider(sdktrace.WithSampler(sdktrace.AlwaysSample()))
+	otel.SetTracerProvider(tp)
+	defer otel.SetTracerProvider(otp)
+
+	ctx, _ := tp.Tracer("foo").Start(context.Background(), "bar")
 	l := WithContext(ctx).(*traceLogger)
 	SetLevel(InfoLevel)
 	l.WithDuration(time.Second).Slow(testlog)
-	assert.True(t, strings.Contains(buf.String(), mockTraceID))
+	assert.True(t, strings.Contains(buf.String(), traceKey))
-	assert.True(t, strings.Contains(buf.String(), mockSpanID))
+	assert.True(t, strings.Contains(buf.String(), spanKey))
 	buf.Reset()
 	l.WithDuration(time.Second).Slowf(testlog)
-	assert.True(t, strings.Contains(buf.String(), mockTraceID))
+	assert.True(t, strings.Contains(buf.String(), traceKey))
-	assert.True(t, strings.Contains(buf.String(), mockSpanID))
+	assert.True(t, strings.Contains(buf.String(), spanKey))
 }
 
 func TestTraceWithoutContext(t *testing.T) {
@@ -83,34 +102,10 @@ func TestTraceWithoutContext(t *testing.T) {
 	l := WithContext(context.Background()).(*traceLogger)
 	SetLevel(InfoLevel)
 	l.WithDuration(time.Second).Info(testlog)
-	assert.False(t, strings.Contains(buf.String(), mockTraceID))
+	assert.False(t, strings.Contains(buf.String(), traceKey))
-	assert.False(t, strings.Contains(buf.String(), mockSpanID))
+	assert.False(t, strings.Contains(buf.String(), spanKey))
 	buf.Reset()
 	l.WithDuration(time.Second).Infof(testlog)
-	assert.False(t, strings.Contains(buf.String(), mockTraceID))
+	assert.False(t, strings.Contains(buf.String(), traceKey))
-	assert.False(t, strings.Contains(buf.String(), mockSpanID))
+	assert.False(t, strings.Contains(buf.String(), spanKey))
-}
-
-type mockTrace struct{}
-
-func (t mockTrace) TraceId() string {
-	return mockTraceID
-}
-
-func (t mockTrace) SpanId() string {
-	return mockSpanID
-}
-
-func (t mockTrace) Finish() {
-}
-
-func (t mockTrace) Fork(ctx context.Context, serviceName, operationName string) (context.Context, tracespec.Trace) {
-	return nil, nil
-}
-
-func (t mockTrace) Follow(ctx context.Context, serviceName, operationName string) (context.Context, tracespec.Trace) {
-	return nil, nil
-}
-
-func (t mockTrace) Visit(fn func(key, val string) bool) {
 }

core/mapping/utils_test.go

@@ -209,6 +209,12 @@ func TestRepr(t *testing.T) {
 			newMockPtr(),
 			"mockptr",
 		},
+		{
+			&mockOpacity{
+				val: 1,
+			},
+			"{1}",
+		},
 		{
 			true,
 			"true",

core/mapping/yamlunmarshaler_test.go

@@ -6,6 +6,7 @@ import (
 	"testing"
 
 	"github.com/stretchr/testify/assert"
+	"k8s.io/utils/io"
 )
 
 func TestUnmarshalYamlBytes(t *testing.T) {
@@ -18,6 +19,22 @@ func TestUnmarshalYamlBytes(t *testing.T) {
 	assert.Equal(t, "liao", c.Name)
 }
 
+func TestUnmarshalYamlBytesErrorInput(t *testing.T) {
+	var c struct {
+		Name string
+	}
+	content := []byte(`liao`)
+	assert.NotNil(t, UnmarshalYamlBytes(content, &c))
+}
+
+func TestUnmarshalYamlBytesEmptyInput(t *testing.T) {
+	var c struct {
+		Name string
+	}
+	content := []byte(``)
+	assert.NotNil(t, UnmarshalYamlBytes(content, &c))
+}
+
 func TestUnmarshalYamlBytesOptional(t *testing.T) {
 	var c struct {
 		Name string
@@ -918,3 +935,18 @@ func TestUnmarshalYamlReaderError(t *testing.T) {
 	err := UnmarshalYamlReader(reader, &v)
 	assert.NotNil(t, err)
 }
+
+func TestUnmarshalYamlBadReader(t *testing.T) {
+	var v struct {
+		Any string
+	}
+
+	err := UnmarshalYamlReader(new(badReader), &v)
+	assert.NotNil(t, err)
+}
+
+type badReader struct{}
+
+func (b *badReader) Read(p []byte) (n int, err error) {
+	return 0, io.ErrLimitReached
+}

core/proc/shutdown.go

@@ -1,3 +1,4 @@
+//go:build linux || darwin
 // +build linux darwin
 
 package proc

core/prometheus/agent.go

@@ -23,11 +23,11 @@ func Enabled() bool {
 
 // StartAgent starts a prometheus agent.
 func StartAgent(c Config) {
-	once.Do(func() {
+	if len(c.Host) == 0 {
-		if len(c.Host) == 0 {
+		return
-			return
+	}
-		}
 
+	once.Do(func() {
 		enabled.Set(true)
 		threading.GoSafe(func() {
 			http.Handle(c.Path, promhttp.Handler())

core/retry/backoff/backoff.go

@@ -0,0 +1,32 @@
+package backoff
+
+import (
+	"math/rand"
+	"time"
+)
+
+// Func defines the method to calculate how long to retry.
+type Func func(attempt int) time.Duration
+
+// LinearWithJitter waits a set period of time, allowing for jitter (fractional adjustment).
+func LinearWithJitter(waitBetween time.Duration, jitterFraction float64) Func {
+	r := rand.New(rand.NewSource(time.Now().UnixNano()))
+	return func(attempt int) time.Duration {
+		multiplier := jitterFraction * (r.Float64()*2 - 1)
+		return time.Duration(float64(waitBetween) * (1 + multiplier))
+	}
+}
+
+// Interval it waits for a fixed period of time between calls.
+func Interval(interval time.Duration) Func {
+	return func(attempt int) time.Duration {
+		return interval
+	}
+}
+
+// Exponential produces increasing intervals for each attempt.
+func Exponential(scalar time.Duration) Func {
+	return func(attempt int) time.Duration {
+		return scalar * time.Duration((1<<attempt)>>1)
+	}
+}

core/retry/backoff/backoff_test.go

@@ -0,0 +1,30 @@
+package backoff
+
+import (
+	"testing"
+	"time"
+
+	"github.com/stretchr/testify/assert"
+)
+
+func TestWaitBetween(t *testing.T) {
+	fn := Interval(time.Second)
+	assert.EqualValues(t, time.Second, fn(1))
+}
+
+func TestExponential(t *testing.T) {
+	fn := Exponential(time.Second)
+	assert.EqualValues(t, time.Second, fn(1))
+}
+
+func TestLinearWithJitter(t *testing.T) {
+	const rounds = 1000000
+	var total time.Duration
+	fn := LinearWithJitter(time.Second, 0.5)
+	for i := 0; i < rounds; i++ {
+		total += fn(1)
+	}
+
+	// 0.1% tolerance
+	assert.True(t, total/time.Duration(rounds)-time.Second < time.Millisecond)
+}

core/retry/options.go

@@ -0,0 +1,42 @@
+package retry
+
+import (
+	"time"
+
+	"github.com/tal-tech/go-zero/core/retry/backoff"
+	"google.golang.org/grpc/codes"
+)
+
+// WithDisable disables the retry behaviour on this call, or this interceptor.
+// It's semantically the same to `WithMax(0)`
+func WithDisable() *CallOption {
+	return WithMax(0)
+}
+
+// WithMax sets the maximum number of retries on this call, or this interceptor.
+func WithMax(maxRetries int) *CallOption {
+	return &CallOption{apply: func(options *options) {
+		options.max = maxRetries
+	}}
+}
+
+// WithBackoff sets the `BackoffFunc` used to control time between retries.
+func WithBackoff(backoffFunc backoff.Func) *CallOption {
+	return &CallOption{apply: func(o *options) {
+		o.backoffFunc = backoffFunc
+	}}
+}
+
+// WithCodes Allow code to be retried.
+func WithCodes(retryCodes ...codes.Code) *CallOption {
+	return &CallOption{apply: func(o *options) {
+		o.codes = retryCodes
+	}}
+}
+
+// WithPerRetryTimeout timeout for each retry
+func WithPerRetryTimeout(timeout time.Duration) *CallOption {
+	return &CallOption{apply: func(o *options) {
+		o.perCallTimeout = timeout
+	}}
+}

core/retry/options_test.go

@@ -0,0 +1,91 @@
+package retry
+
+import (
+	"context"
+	"errors"
+	"testing"
+	"time"
+
+	"github.com/stretchr/testify/assert"
+	"github.com/tal-tech/go-zero/core/logx"
+	"google.golang.org/grpc"
+	"google.golang.org/grpc/codes"
+	"google.golang.org/grpc/metadata"
+	"google.golang.org/grpc/status"
+)
+
+func TestRetryWithDisable(t *testing.T) {
+	opt := &options{}
+	assert.EqualValues(t, &options{}, parseRetryCallOptions(opt, WithDisable()))
+}
+
+func TestRetryWithMax(t *testing.T) {
+	n := 5
+	for i := 0; i < n; i++ {
+		opt := &options{}
+		assert.EqualValues(t, &options{max: i}, parseRetryCallOptions(opt, WithMax(i)))
+	}
+}
+
+func TestRetryWithBackoff(t *testing.T) {
+	opt := &options{}
+
+	retryCallOptions := parseRetryCallOptions(opt, WithBackoff(func(attempt int) time.Duration {
+		return time.Millisecond
+	}))
+	assert.EqualValues(t, time.Millisecond, retryCallOptions.backoffFunc(1))
+}
+
+func TestRetryWithCodes(t *testing.T) {
+	opt := &options{}
+	c := []codes.Code{codes.Unknown, codes.NotFound}
+	options := parseRetryCallOptions(opt, WithCodes(c...))
+	assert.EqualValues(t, c, options.codes)
+}
+
+func TestRetryWithPerRetryTimeout(t *testing.T) {
+	opt := &options{}
+	options := parseRetryCallOptions(opt, WithPerRetryTimeout(time.Millisecond))
+	assert.EqualValues(t, time.Millisecond, options.perCallTimeout)
+}
+
+func Test_waitRetryBackoff(t *testing.T) {
+	logx.Disable()
+
+	opt := &options{perCallTimeout: time.Second, backoffFunc: func(attempt int) time.Duration {
+		return time.Second
+	}}
+	logger := logx.WithContext(context.Background())
+	err := waitRetryBackoff(logger, 1, context.Background(), opt)
+	assert.NoError(t, err)
+	ctx, cancelFunc := context.WithTimeout(context.Background(), time.Millisecond)
+	defer cancelFunc()
+	err = waitRetryBackoff(logger, 1, ctx, opt)
+	assert.ErrorIs(t, err, status.FromContextError(context.DeadlineExceeded).Err())
+}
+
+func Test_isRetriable(t *testing.T) {
+	assert.False(t, isRetriable(status.FromContextError(context.DeadlineExceeded).Err(), &options{codes: DefaultRetriableCodes}))
+	assert.True(t, isRetriable(status.Error(codes.ResourceExhausted, ""), &options{codes: DefaultRetriableCodes}))
+	assert.False(t, isRetriable(errors.New("error"), &options{}))
+}
+
+func Test_perCallContext(t *testing.T) {
+	opt := &options{perCallTimeout: time.Second, includeRetryHeader: true}
+	ctx := metadata.NewIncomingContext(context.Background(), map[string][]string{"1": {"1"}})
+	callContext := perCallContext(ctx, opt, 1)
+	md, ok := metadata.FromOutgoingContext(callContext)
+	assert.True(t, ok)
+	assert.EqualValues(t, metadata.MD{"1": {"1"}, AttemptMetadataKey: {"1"}}, md)
+}
+
+func Test_filterCallOptions(t *testing.T) {
+	grpcEmptyCallOpt := &grpc.EmptyCallOption{}
+	retryCallOpt := &CallOption{}
+	options, retryCallOptions := filterCallOptions([]grpc.CallOption{
+		grpcEmptyCallOpt,
+		retryCallOpt,
+	})
+	assert.EqualValues(t, []grpc.CallOption{grpcEmptyCallOpt}, options)
+	assert.EqualValues(t, []*CallOption{retryCallOpt}, retryCallOptions)
+}

core/retry/retryinterceptor.go

@@ -0,0 +1,189 @@
+package retry
+
+import (
+	"context"
+	"strconv"
+	"time"
+
+	"github.com/tal-tech/go-zero/core/logx"
+	"github.com/tal-tech/go-zero/core/retry/backoff"
+	"google.golang.org/grpc"
+	"google.golang.org/grpc/codes"
+	"google.golang.org/grpc/metadata"
+	"google.golang.org/grpc/status"
+)
+
+const AttemptMetadataKey = "x-retry-attempt"
+
+var (
+	// DefaultRetriableCodes default retry code
+	DefaultRetriableCodes = []codes.Code{codes.ResourceExhausted, codes.Unavailable}
+	// defaultRetryOptions default retry configuration
+	defaultRetryOptions = &options{
+		max:                0, // disabled
+		perCallTimeout:     0, // disabled
+		includeRetryHeader: true,
+		codes:              DefaultRetriableCodes,
+		backoffFunc:        backoff.LinearWithJitter(50*time.Millisecond /*jitter*/, 0.10),
+	}
+)
+
+type (
+	// options retry the configuration
+	options struct {
+		max                int
+		perCallTimeout     time.Duration
+		includeRetryHeader bool
+		codes              []codes.Code
+		backoffFunc        backoff.Func
+	}
+
+	// CallOption is a grpc.CallOption that is local to grpc retry.
+	CallOption struct {
+		grpc.EmptyCallOption // make sure we implement private after() and before() fields so we don't panic.
+		apply                func(opt *options)
+	}
+)
+
+func waitRetryBackoff(logger logx.Logger, attempt int, ctx context.Context, retryOptions *options) error {
+	var waitTime time.Duration = 0
+	if attempt > 0 {
+		waitTime = retryOptions.backoffFunc(attempt)
+	}
+	if waitTime > 0 {
+		timer := time.NewTimer(waitTime)
+		defer timer.Stop()
+
+		logger.Infof("grpc retry attempt: %d, backoff for %v", attempt, waitTime)
+		select {
+		case <-ctx.Done():
+			return status.FromContextError(ctx.Err()).Err()
+		case <-timer.C:
+			// double check
+			err := ctx.Err()
+			if err != nil {
+				return status.FromContextError(err).Err()
+			}
+		}
+	}
+
+	return nil
+}
+
+func isRetriable(err error, retryOptions *options) bool {
+	errCode := status.Code(err)
+	if isContextError(err) {
+		return false
+	}
+
+	for _, code := range retryOptions.codes {
+		if code == errCode {
+			return true
+		}
+	}
+
+	return false
+}
+
+func isContextError(err error) bool {
+	code := status.Code(err)
+	return code == codes.DeadlineExceeded || code == codes.Canceled
+}
+
+func reuseOrNewWithCallOptions(opt *options, retryCallOptions []*CallOption) *options {
+	if len(retryCallOptions) == 0 {
+		return opt
+	}
+
+	return parseRetryCallOptions(opt, retryCallOptions...)
+}
+
+func parseRetryCallOptions(opt *options, opts ...*CallOption) *options {
+	for _, option := range opts {
+		option.apply(opt)
+	}
+
+	return opt
+}
+
+func perCallContext(ctx context.Context, callOpts *options, attempt int) context.Context {
+	if attempt > 0 {
+		if callOpts.perCallTimeout != 0 {
+			var cancel context.CancelFunc
+			ctx, cancel = context.WithTimeout(ctx, callOpts.perCallTimeout)
+			_ = cancel
+		}
+		if callOpts.includeRetryHeader {
+			cloneMd := extractIncomingAndClone(ctx)
+			cloneMd.Set(AttemptMetadataKey, strconv.Itoa(attempt))
+			ctx = metadata.NewOutgoingContext(ctx, cloneMd)
+		}
+	}
+
+	return ctx
+}
+
+func extractIncomingAndClone(ctx context.Context) metadata.MD {
+	md, ok := metadata.FromIncomingContext(ctx)
+	if !ok {
+		return metadata.MD{}
+	}
+
+	return md.Copy()
+}
+
+func filterCallOptions(callOptions []grpc.CallOption) (grpcOptions []grpc.CallOption, retryOptions []*CallOption) {
+	for _, opt := range callOptions {
+		if co, ok := opt.(*CallOption); ok {
+			retryOptions = append(retryOptions, co)
+		} else {
+			grpcOptions = append(grpcOptions, opt)
+		}
+	}
+
+	return grpcOptions, retryOptions
+}
+
+func Do(ctx context.Context, call func(ctx context.Context, opts ...grpc.CallOption) error, opts ...grpc.CallOption) error {
+	logger := logx.WithContext(ctx)
+	grpcOpts, retryOpts := filterCallOptions(opts)
+	callOpts := reuseOrNewWithCallOptions(defaultRetryOptions, retryOpts)
+
+	if callOpts.max == 0 {
+		return call(ctx, opts...)
+	}
+
+	var lastErr error
+	for attempt := 0; attempt <= callOpts.max; attempt++ {
+		if err := waitRetryBackoff(logger, attempt, ctx, callOpts); err != nil {
+			return err
+		}
+
+		callCtx := perCallContext(ctx, callOpts, attempt)
+		lastErr = call(callCtx, grpcOpts...)
+
+		if lastErr == nil {
+			return nil
+		}
+
+		if attempt == 0 {
+			logger.Errorf("grpc call failed, got err: %v", lastErr)
+		} else {
+			logger.Errorf("grpc retry attempt: %d, got err: %v", attempt, lastErr)
+		}
+		if isContextError(lastErr) {
+			if ctx.Err() != nil {
+				logger.Errorf("grpc retry attempt: %d, parent context error: %v", attempt, ctx.Err())
+				return lastErr
+			} else if callOpts.perCallTimeout != 0 {
+				logger.Errorf("grpc retry attempt: %d, context error from retry call", attempt)
+				continue
+			}
+		}
+		if !isRetriable(lastErr, callOpts) {
+			return lastErr
+		}
+	}
+
+	return lastErr
+}

core/retry/retryinterceptor_test.go

@@ -0,0 +1,24 @@
+package retry
+
+import (
+	"context"
+	"testing"
+
+	"github.com/stretchr/testify/assert"
+	"google.golang.org/grpc"
+	"google.golang.org/grpc/codes"
+	"google.golang.org/grpc/status"
+)
+
+func TestDo(t *testing.T) {
+	n := 4
+	for i := 0; i < n; i++ {
+		count := 0
+		err := Do(context.Background(), func(ctx context.Context, opts ...grpc.CallOption) error {
+			count++
+			return status.Error(codes.ResourceExhausted, "ResourceExhausted")
+		}, WithMax(i))
+		assert.Error(t, err)
+		assert.Equal(t, i+1, count)
+	}
+}

core/search/tree_debug.go

@@ -1,3 +1,4 @@
+//go:build debug
 // +build debug
 
 package search

core/service/serviceconf.go

@@ -7,6 +7,7 @@ import (
 	"github.com/tal-tech/go-zero/core/logx"
 	"github.com/tal-tech/go-zero/core/prometheus"
 	"github.com/tal-tech/go-zero/core/stat"
+	"github.com/tal-tech/go-zero/core/trace"
 )
 
 const (
@@ -29,8 +30,7 @@ type ServiceConf struct {
 	Mode       string            `json:",default=pro,options=dev|test|rt|pre|pro"`
 	MetricsUrl string            `json:",optional"`
 	Prometheus prometheus.Config `json:",optional"`
-	// TODO: enable it in v1.2.1
+	Telemetry  trace.Config      `json:",optional"`
-	// Telemetry opentelemetry.Config `json:",optional"`
 }
 
 // MustSetUp sets up the service, exits on error.
@@ -52,11 +52,10 @@ func (sc ServiceConf) SetUp() error {
 	sc.initMode()
 	prometheus.StartAgent(sc.Prometheus)
 
-	// TODO: enable it in v1.2.1
+	if len(sc.Telemetry.Name) == 0 {
-	// if len(sc.Telemetry.Name) == 0 {
+		sc.Telemetry.Name = sc.Name
-	// 	sc.Telemetry.Name = sc.Name
+	}
-	// }
+	trace.StartAgent(sc.Telemetry)
-	// opentelemetry.StartAgent(sc.Telemetry)
 
 	if len(sc.MetricsUrl) > 0 {
 		stat.SetReportWriter(stat.NewRemoteWriter(sc.MetricsUrl))

core/service/servicegroup.go

@@ -26,6 +26,7 @@ type (
 	}
 
 	// A ServiceGroup is a group of services.
+	// Attention: the starting order of the added services is not guaranteed.
 	ServiceGroup struct {
 		services []Service
 		stopOnce func()
@@ -41,7 +42,8 @@ func NewServiceGroup() *ServiceGroup {
 
 // Add adds service into sg.
 func (sg *ServiceGroup) Add(service Service) {
-	sg.services = append(sg.services, service)
+	// push front, stop with reverse order.
+	sg.services = append([]Service{service}, sg.services...)
 }
 
 // Start starts the ServiceGroup.

core/stat/alert.go

@@ -1,3 +1,4 @@
+//go:build linux
 // +build linux
 
 package stat

core/stat/alert_test.go

@@ -1,3 +1,4 @@
+//go:build linux
 // +build linux
 
 package stat

core/stat/internal/cpu_linux_test.go

@@ -7,7 +7,9 @@ import (
 )
 
 func TestRefreshCpu(t *testing.T) {
-	assert.True(t, RefreshCpu() >= 0)
+	assert.NotPanics(t, func() {
+		RefreshCpu()
+	})
 }
 
 func BenchmarkRefreshCpu(b *testing.B) {

core/stat/internal/cpu_other.go

@@ -1,3 +1,4 @@
+//go:build !linux
 // +build !linux
 
 package internal

core/stores/builder/builder.go

@@ -0,0 +1,63 @@
+package builder
+
+import (
+	"fmt"
+	"reflect"
+	"strings"
+)
+
+const dbTag = "db"
+
+// RawFieldNames converts golang struct field into slice string.
+func RawFieldNames(in interface{}, postgresSql ...bool) []string {
+	out := make([]string, 0)
+	v := reflect.ValueOf(in)
+	if v.Kind() == reflect.Ptr {
+		v = v.Elem()
+	}
+
+	var pg bool
+	if len(postgresSql) > 0 {
+		pg = postgresSql[0]
+	}
+
+	// we only accept structs
+	if v.Kind() != reflect.Struct {
+		panic(fmt.Errorf("ToMap only accepts structs; got %T", v))
+	}
+
+	typ := v.Type()
+	for i := 0; i < v.NumField(); i++ {
+		// gets us a StructField
+		fi := typ.Field(i)
+		if tagv := fi.Tag.Get(dbTag); tagv != "" {
+			if pg {
+				out = append(out, tagv)
+			} else {
+				out = append(out, fmt.Sprintf("`%s`", tagv))
+			}
+		} else {
+			if pg {
+				out = append(out, fi.Name)
+			} else {
+				out = append(out, fmt.Sprintf("`%s`", fi.Name))
+			}
+		}
+	}
+
+	return out
+}
+
+// PostgreSqlJoin concatenates the given elements into a string.
+func PostgreSqlJoin(elems []string) string {
+	b := new(strings.Builder)
+	for index, e := range elems {
+		b.WriteString(fmt.Sprintf("%s = $%d, ", e, index+2))
+	}
+
+	if b.Len() == 0 {
+		return b.String()
+	}
+
+	return b.String()[0 : b.Len()-2]
+}

core/stores/builder/builder_test.go

@@ -0,0 +1,24 @@
+package builder
+
+import (
+	"testing"
+
+	"github.com/stretchr/testify/assert"
+)
+
+type mockedUser struct {
+	ID       string `db:"id" json:"id,omitempty"`
+	UserName string `db:"user_name" json:"userName,omitempty"`
+	Sex      int    `db:"sex" json:"sex,omitempty"`
+	UUID     string `db:"uuid" uuid:"uuid,omitempty"`
+	Age      int    `db:"age" json:"age"`
+}
+
+func TestFieldNames(t *testing.T) {
+	t.Run("new", func(t *testing.T) {
+		var u mockedUser
+		out := RawFieldNames(&u)
+		expected := []string{"`id`", "`user_name`", "`sex`", "`uuid`", "`age`"}
+		assert.Equal(t, expected, out)
+	})
+}

core/stores/cache/cachenode_test.go

@@ -73,7 +73,7 @@ func TestCacheNode_InvalidCache(t *testing.T) {
 	defer s.Close()
 
 	cn := cacheNode{
-		rds:            redis.NewRedis(s.Addr(), redis.NodeType),
+		rds:            redis.New(s.Addr()),
 		r:              rand.New(rand.NewSource(time.Now().UnixNano())),
 		lock:           new(sync.Mutex),
 		unstableExpiry: mathx.NewUnstable(expiryDeviation),

core/stores/kv/store_test.go

@@ -667,10 +667,12 @@ func TestRedis_HyperLogLog(t *testing.T) {
 	assert.NotNil(t, err)
 
 	runOnCluster(t, func(cluster Store) {
-		_, err := cluster.Pfadd("key")
+		ok, err := cluster.Pfadd("key", "value")
-		assert.NotNil(t, err)
+		assert.Nil(t, err)
-		_, err = cluster.Pfcount("key")
+		assert.True(t, ok)
-		assert.NotNil(t, err)
+		val, err := cluster.Pfcount("key")
+		assert.Nil(t, err)
+		assert.Equal(t, int64(1), val)
 	})
 }
 

core/stores/mongo/collection.go

@@ -11,7 +11,7 @@ import (
 	"github.com/tal-tech/go-zero/core/timex"
 )
 
-const slowThreshold = time.Millisecond * 500
+const defaultSlowThreshold = time.Millisecond * 500
 
 // ErrNotFound is an alias of mgo.ErrNotFound.
 var ErrNotFound = mgo.ErrNotFound
@@ -203,7 +203,7 @@ func (c *decoratedCollection) logDuration(method string, duration time.Duration,
 	if e != nil {
 		logx.Error(err)
 	} else if err != nil {
-		if duration > slowThreshold {
+		if duration > slowThreshold.Load() {
 			logx.WithDuration(duration).Slowf("[MONGO] mongo(%s) - slowcall - %s - fail(%s) - %s",
 				c.name, method, err.Error(), string(content))
 		} else {
@@ -211,7 +211,7 @@ func (c *decoratedCollection) logDuration(method string, duration time.Duration,
 				c.name, method, err.Error(), string(content))
 		}
 	} else {
-		if duration > slowThreshold {
+		if duration > slowThreshold.Load() {
 			logx.WithDuration(duration).Slowf("[MONGO] mongo(%s) - slowcall - %s - ok - %s",
 				c.name, method, string(content))
 		} else {

core/stores/mongo/internal/collection_mock.go

@@ -5,9 +5,10 @@
 package internal
 
 import (
+	reflect "reflect"
+
 	mgo "github.com/globalsign/mgo"
 	gomock "github.com/golang/mock/gomock"
-	reflect "reflect"
 )
 
 // MockMgoCollection is a mock of MgoCollection interface

core/stores/mongo/iter_mock.go

@@ -5,9 +5,10 @@
 package mongo
 
 import (
+	reflect "reflect"
+
 	bson "github.com/globalsign/mgo/bson"
 	gomock "github.com/golang/mock/gomock"
-	reflect "reflect"
 )
 
 // MockIter is a mock of Iter interface

core/stores/mongo/model.go

@@ -8,23 +8,14 @@ import (
 	"github.com/tal-tech/go-zero/core/breaker"
 )
 
-type (
+// A Model is a mongo model.
-	options struct {
+type Model struct {
-		timeout time.Duration
+	session    *concurrentSession
-	}
+	db         *mgo.Database
-
+	collection string
-	// Option defines the method to customize a mongo model.
+	brk        breaker.Breaker
-	Option func(opts *options)
+	opts       []Option
-
+}
-	// A Model is a mongo model.
-	Model struct {
-		session    *concurrentSession
-		db         *mgo.Database
-		collection string
-		brk        breaker.Breaker
-		opts       []Option
-	}
-)
 
 // MustNewModel returns a Model, exits on errors.
 func MustNewModel(url, collection string, opts ...Option) *Model {

core/stores/mongo/model_test.go

@@ -0,0 +1,14 @@
+package mongo
+
+import (
+	"testing"
+	"time"
+
+	"github.com/stretchr/testify/assert"
+)
+
+func TestWithTimeout(t *testing.T) {
+	o := defaultOptions()
+	WithTimeout(time.Second)(o)
+	assert.Equal(t, time.Second, o.timeout)
+}

core/stores/mongo/options.go

@@ -0,0 +1,29 @@
+package mongo
+
+import (
+	"time"
+
+	"github.com/tal-tech/go-zero/core/syncx"
+)
+
+var slowThreshold = syncx.ForAtomicDuration(defaultSlowThreshold)
+
+type (
+	options struct {
+		timeout time.Duration
+	}
+
+	// Option defines the method to customize a mongo model.
+	Option func(opts *options)
+)
+
+// SetSlowThreshold sets the slow threshold.
+func SetSlowThreshold(threshold time.Duration) {
+	slowThreshold.Set(threshold)
+}
+
+func defaultOptions() *options {
+	return &options{
+		timeout: defaultTimeout,
+	}
+}

core/stores/mongo/options_test.go

@@ -0,0 +1,14 @@
+package mongo
+
+import (
+	"testing"
+	"time"
+
+	"github.com/stretchr/testify/assert"
+)
+
+func TestSetSlowThreshold(t *testing.T) {
+	assert.Equal(t, defaultSlowThreshold, slowThreshold.Load())
+	SetSlowThreshold(time.Second)
+	assert.Equal(t, time.Second, slowThreshold.Load())
+}

core/stores/mongo/sessionmanager.go

@@ -57,9 +57,7 @@ func (cs *concurrentSession) putSession(session *mgo.Session) {
 }
 
 func (cs *concurrentSession) takeSession(opts ...Option) (*mgo.Session, error) {
-	o := &options{
+	o := defaultOptions()
-		timeout: defaultTimeout,
-	}
 	for _, opt := range opts {
 		opt(o)
 	}

core/stores/mongoc/cachedcollection_test.go

@@ -120,7 +120,7 @@ func TestStatCacheFails(t *testing.T) {
 	log.SetOutput(ioutil.Discard)
 	defer log.SetOutput(os.Stdout)
 
-	r := redis.NewRedis("localhost:59999", redis.NodeType)
+	r := redis.New("localhost:59999")
 	cach := cache.NewNode(r, sharedCalls, stats, mgo.ErrNotFound)
 	c := newCollection(dummyConn{}, cach)
 

core/stores/redis/conf.go

@@ -17,7 +17,7 @@ type (
 		Host string
 		Type string `json:",default=node,options=node|cluster"`
 		Pass string `json:",optional"`
-		Tls  bool   `json:",default=false,options=true|false"`
+		Tls  bool   `json:",optional"`
 	}
 
 	// A RedisKeyConf is a redis config with key.

core/stores/redis/process.go

@@ -9,13 +9,13 @@ import (
 	"github.com/tal-tech/go-zero/core/timex"
 )
 
-func process(proc func(red.Cmder) error) func(red.Cmder) error {
+func checkDuration(proc func(red.Cmder) error) func(red.Cmder) error {
 	return func(cmd red.Cmder) error {
 		start := timex.Now()
 
 		defer func() {
 			duration := timex.Since(start)
-			if duration > slowThreshold {
+			if duration > slowThreshold.Load() {
 				var buf strings.Builder
 				for i, arg := range cmd.Args() {
 					if i > 0 {

core/stores/redis/redis.go

@@ -9,6 +9,7 @@ import (
 	red "github.com/go-redis/redis"
 	"github.com/tal-tech/go-zero/core/breaker"
 	"github.com/tal-tech/go-zero/core/mapping"
+	"github.com/tal-tech/go-zero/core/syncx"
 )
 
 const (
@@ -21,12 +22,14 @@ const (
 
 	blockingQueryTimeout = 5 * time.Second
 	readWriteTimeout     = 2 * time.Second
-
+	defaultSlowThreshold = time.Millisecond * 100
-	slowThreshold = time.Millisecond * 100
 )
 
-// ErrNilNode is an error that indicates a nil redis node.
+var (
-var ErrNilNode = errors.New("nil redis node")
+	// ErrNilNode is an error that indicates a nil redis node.
+	ErrNilNode    = errors.New("nil redis node")
+	slowThreshold = syncx.ForAtomicDuration(defaultSlowThreshold)
+)
 
 type (
 	// Option defines the method to customize a Redis.
@@ -90,6 +93,7 @@ func New(addr string, opts ...Option) *Redis {
 	return r
 }
 
+// Deprecated: use New instead, will be removed in v2.
 // NewRedis returns a Redis.
 func NewRedis(redisAddr, redisType string, redisPass ...string) *Redis {
 	var opts []Option
@@ -1757,6 +1761,11 @@ func Cluster() Option {
 	}
 }
 
+// SetSlowThreshold sets the slow threshold.
+func SetSlowThreshold(threshold time.Duration) {
+	slowThreshold.Set(threshold)
+}
+
 // WithPass customizes the given Redis with given password.
 func WithPass(pass string) Option {
 	return func(r *Redis) {

core/stores/redis/redis_test.go

@@ -11,6 +11,7 @@ import (
 	"github.com/alicebob/miniredis/v2"
 	red "github.com/go-redis/redis"
 	"github.com/stretchr/testify/assert"
+	"github.com/tal-tech/go-zero/core/stringx"
 )
 
 func TestRedis_Exists(t *testing.T) {
@@ -186,7 +187,7 @@ func TestRedis_Hscan(t *testing.T) {
 		key := "hash:test"
 		fieldsAndValues := make(map[string]string)
 		for i := 0; i < 1550; i++ {
-			fieldsAndValues["filed_"+strconv.Itoa(i)] = randomStr(i)
+			fieldsAndValues["filed_"+strconv.Itoa(i)] = stringx.Randn(i)
 		}
 		err := client.Hmset(key, fieldsAndValues)
 		assert.Nil(t, err)
@@ -256,13 +257,24 @@ func TestRedis_Keys(t *testing.T) {
 func TestRedis_HyperLogLog(t *testing.T) {
 	runOnRedis(t, func(client *Redis) {
 		client.Ping()
-		r := New(client.Addr, badType())
+		r := New(client.Addr)
-		_, err := r.Pfadd("key1")
+		ok, err := r.Pfadd("key1", "val1")
-		assert.NotNil(t, err)
+		assert.Nil(t, err)
-		_, err = r.Pfcount("*")
+		assert.True(t, ok)
-		assert.NotNil(t, err)
+		val, err := r.Pfcount("key1")
-		err = r.Pfmerge("*")
+		assert.Nil(t, err)
-		assert.NotNil(t, err)
+		assert.Equal(t, int64(1), val)
+		ok, err = r.Pfadd("key2", "val2")
+		assert.Nil(t, err)
+		assert.True(t, ok)
+		val, err = r.Pfcount("key2")
+		assert.Nil(t, err)
+		assert.Equal(t, int64(1), val)
+		err = r.Pfmerge("key1", "key2")
+		assert.Nil(t, err)
+		val, err = r.Pfcount("key1")
+		assert.Nil(t, err)
+		assert.Equal(t, int64(2), val)
 	})
 }
 
@@ -539,7 +551,7 @@ func TestRedis_Sscan(t *testing.T) {
 		key := "list"
 		var list []string
 		for i := 0; i < 1550; i++ {
-			list = append(list, randomStr(i))
+			list = append(list, stringx.Randn(i))
 		}
 		lens, err := client.Sadd(key, list)
 		assert.Nil(t, err)
@@ -963,7 +975,7 @@ func TestRedis_Pipelined(t *testing.T) {
 func TestRedisString(t *testing.T) {
 	runOnRedis(t, func(client *Redis) {
 		client.Ping()
-		_, err := getRedis(NewRedis(client.Addr, ClusterType))
+		_, err := getRedis(New(client.Addr, Cluster()))
 		assert.Nil(t, err)
 		assert.Equal(t, client.Addr, client.String())
 		assert.NotNil(t, New(client.Addr, badType()).Ping())
@@ -1073,9 +1085,15 @@ func TestRedisGeo(t *testing.T) {
 	})
 }
 
+func TestSetSlowThreshold(t *testing.T) {
+	assert.Equal(t, defaultSlowThreshold, slowThreshold.Load())
+	SetSlowThreshold(time.Second)
+	assert.Equal(t, time.Second, slowThreshold.Load())
+}
+
 func TestRedis_WithPass(t *testing.T) {
 	runOnRedis(t, func(client *Redis) {
-		err := NewRedis(client.Addr, NodeType, "any").Ping()
+		err := New(client.Addr, WithPass("any")).Ping()
 		assert.NotNil(t, err)
 	})
 }
@@ -1095,7 +1113,7 @@ func runOnRedis(t *testing.T, fn func(client *Redis)) {
 			client.Close()
 		}
 	}()
-	fn(NewRedis(s.Addr(), NodeType))
+	fn(New(s.Addr()))
 }
 
 func runOnRedisTLS(t *testing.T, fn func(client *Redis)) {

core/stores/redis/redisblockingnode_test.go

@@ -10,10 +10,10 @@ import (
 func TestBlockingNode(t *testing.T) {
 	r, err := miniredis.Run()
 	assert.Nil(t, err)
-	node, err := CreateBlockingNode(NewRedis(r.Addr(), NodeType))
+	node, err := CreateBlockingNode(New(r.Addr()))
 	assert.Nil(t, err)
 	node.Close()
-	node, err = CreateBlockingNode(NewRedis(r.Addr(), ClusterType))
+	node, err = CreateBlockingNode(New(r.Addr(), Cluster()))
 	assert.Nil(t, err)
 	node.Close()
 }

core/stores/redis/redisclientmanager.go

@@ -32,7 +32,7 @@ func getClient(r *Redis) (*red.Client, error) {
 			MinIdleConns: idleConns,
 			TLSConfig:    tlsConfig,
 		})
-		store.WrapProcess(process)
+		store.WrapProcess(checkDuration)
 		return store, nil
 	})
 	if err != nil {

core/stores/redis/redisclustermanager.go

@@ -25,7 +25,7 @@ func getCluster(r *Redis) (*red.ClusterClient, error) {
 			MinIdleConns: idleConns,
 			TLSConfig:    tlsConfig,
 		})
-		store.WrapProcess(process)
+		store.WrapProcess(checkDuration)
 
 		return store, nil
 	})

core/stores/redis/redislock.go

@@ -8,10 +8,10 @@ import (
 
 	red "github.com/go-redis/redis"
 	"github.com/tal-tech/go-zero/core/logx"
+	"github.com/tal-tech/go-zero/core/stringx"
 )
 
 const (
-	letters     = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ"
 	lockCommand = `if redis.call("GET", KEYS[1]) == ARGV[1] then
     redis.call("SET", KEYS[1], ARGV[1], "PX", ARGV[2])
     return "OK"
@@ -45,7 +45,7 @@ func NewRedisLock(store *Redis, key string) *RedisLock {
 	return &RedisLock{
 		store: store,
 		key:   key,
-		id:    randomStr(randomLen),
+		id:    stringx.Randn(randomLen),
 	}
 }
 
@@ -92,11 +92,3 @@ func (rl *RedisLock) Release() (bool, error) {
 func (rl *RedisLock) SetExpire(seconds int) {
 	atomic.StoreUint32(&rl.seconds, uint32(seconds))
 }
-
-func randomStr(n int) string {
-	b := make([]byte, n)
-	for i := range b {
-		b[i] = letters[rand.Intn(len(letters))]
-	}
-	return string(b)
-}

core/stores/redis/redistest/redistest.go

@@ -15,7 +15,7 @@ func CreateRedis() (r *redis.Redis, clean func(), err error) {
 		return nil, nil, err
 	}
 
-	return redis.NewRedis(mr.Addr(), redis.NodeType), func() {
+	return redis.New(mr.Addr()), func() {
 		ch := make(chan lang.PlaceholderType)
 		go func() {
 			mr.Close()

core/stores/sqlc/cachedsql_test.go

@@ -286,7 +286,7 @@ func TestStatCacheFails(t *testing.T) {
 	log.SetOutput(ioutil.Discard)
 	defer log.SetOutput(os.Stdout)
 
-	r := redis.NewRedis("localhost:59999", redis.NodeType)
+	r := redis.New("localhost:59999")
 	c := NewNodeConn(dummySqlConn{}, r, cache.WithExpiry(time.Second*10))
 
 	for i := 0; i < 20; i++ {
@@ -485,7 +485,7 @@ func TestCachedConnExecDropCache(t *testing.T) {
 		value = "any"
 	)
 	var conn trackedConn
-	c := NewNodeConn(&conn, redis.NewRedis(r.Addr(), redis.NodeType), cache.WithExpiry(time.Second*30))
+	c := NewNodeConn(&conn, redis.New(r.Addr()), cache.WithExpiry(time.Second*30))
 	assert.Nil(t, c.SetCache(key, value))
 	_, err = c.Exec(func(conn sqlx.SqlConn) (result sql.Result, e error) {
 		return conn.Exec("delete from user_table where id='kevin'")
@@ -503,7 +503,7 @@ func TestCachedConnExecDropCache(t *testing.T) {
 func TestCachedConnExecDropCacheFailed(t *testing.T) {
 	const key = "user"
 	var conn trackedConn
-	r := redis.NewRedis("anyredis:8888", redis.NodeType)
+	r := redis.New("anyredis:8888")
 	c := NewNodeConn(&conn, r, cache.WithExpiry(time.Second*10))
 	_, err := c.Exec(func(conn sqlx.SqlConn) (result sql.Result, e error) {
 		return conn.Exec("delete from user_table where id='kevin'")

core/stores/sqlx/stmt.go

@@ -5,10 +5,18 @@ import (
 	"time"
 
 	"github.com/tal-tech/go-zero/core/logx"
+	"github.com/tal-tech/go-zero/core/syncx"
 	"github.com/tal-tech/go-zero/core/timex"
 )
 
-const slowThreshold = time.Millisecond * 500
+const defaultSlowThreshold = time.Millisecond * 500
+
+var slowThreshold = syncx.ForAtomicDuration(defaultSlowThreshold)
+
+// SetSlowThreshold sets the slow threshold.
+func SetSlowThreshold(threshold time.Duration) {
+	slowThreshold.Set(threshold)
+}
 
 func exec(conn sessionConn, q string, args ...interface{}) (sql.Result, error) {
 	stmt, err := format(q, args...)
@@ -19,7 +27,7 @@ func exec(conn sessionConn, q string, args ...interface{}) (sql.Result, error) {
 	startTime := timex.Now()
 	result, err := conn.Exec(q, args...)
 	duration := timex.Since(startTime)
-	if duration > slowThreshold {
+	if duration > slowThreshold.Load() {
 		logx.WithDuration(duration).Slowf("[SQL] exec: slowcall - %s", stmt)
 	} else {
 		logx.WithDuration(duration).Infof("sql exec: %s", stmt)
@@ -40,7 +48,7 @@ func execStmt(conn stmtConn, q string, args ...interface{}) (sql.Result, error)
 	startTime := timex.Now()
 	result, err := conn.Exec(args...)
 	duration := timex.Since(startTime)
-	if duration > slowThreshold {
+	if duration > slowThreshold.Load() {
 		logx.WithDuration(duration).Slowf("[SQL] execStmt: slowcall - %s", stmt)
 	} else {
 		logx.WithDuration(duration).Infof("sql execStmt: %s", stmt)
@@ -61,7 +69,7 @@ func query(conn sessionConn, scanner func(*sql.Rows) error, q string, args ...in
 	startTime := timex.Now()
 	rows, err := conn.Query(q, args...)
 	duration := timex.Since(startTime)
-	if duration > slowThreshold {
+	if duration > slowThreshold.Load() {
 		logx.WithDuration(duration).Slowf("[SQL] query: slowcall - %s", stmt)
 	} else {
 		logx.WithDuration(duration).Infof("sql query: %s", stmt)
@@ -84,7 +92,7 @@ func queryStmt(conn stmtConn, scanner func(*sql.Rows) error, q string, args ...i
 	startTime := timex.Now()
 	rows, err := conn.Query(args...)
 	duration := timex.Since(startTime)
-	if duration > slowThreshold {
+	if duration > slowThreshold.Load() {
 		logx.WithDuration(duration).Slowf("[SQL] queryStmt: slowcall - %s", stmt)
 	} else {
 		logx.WithDuration(duration).Infof("sql queryStmt: %s", stmt)

core/stores/sqlx/stmt_test.go

@@ -171,6 +171,12 @@ func TestStmt_query(t *testing.T) {
 	}
 }
 
+func TestSetSlowThreshold(t *testing.T) {
+	assert.Equal(t, defaultSlowThreshold, slowThreshold.Load())
+	SetSlowThreshold(time.Second)
+	assert.Equal(t, time.Second, slowThreshold.Load())
+}
+
 type mockedSessionConn struct {
 	lastInsertId int64
 	rowsAffected int64
@@ -180,7 +186,7 @@ type mockedSessionConn struct {
 
 func (m *mockedSessionConn) Exec(query string, args ...interface{}) (sql.Result, error) {
 	if m.delay {
-		time.Sleep(slowThreshold + time.Millisecond)
+		time.Sleep(defaultSlowThreshold + time.Millisecond)
 	}
 	return mockedResult{
 		lastInsertId: m.lastInsertId,
@@ -190,7 +196,7 @@ func (m *mockedSessionConn) Exec(query string, args ...interface{}) (sql.Result,
 
 func (m *mockedSessionConn) Query(query string, args ...interface{}) (*sql.Rows, error) {
 	if m.delay {
-		time.Sleep(slowThreshold + time.Millisecond)
+		time.Sleep(defaultSlowThreshold + time.Millisecond)
 	}
 
 	err := errMockedPlaceholder
@@ -209,7 +215,7 @@ type mockedStmtConn struct {
 
 func (m *mockedStmtConn) Exec(args ...interface{}) (sql.Result, error) {
 	if m.delay {
-		time.Sleep(slowThreshold + time.Millisecond)
+		time.Sleep(defaultSlowThreshold + time.Millisecond)
 	}
 	return mockedResult{
 		lastInsertId: m.lastInsertId,
@@ -219,7 +225,7 @@ func (m *mockedStmtConn) Exec(args ...interface{}) (sql.Result, error) {
 
 func (m *mockedStmtConn) Query(args ...interface{}) (*sql.Rows, error) {
 	if m.delay {
-		time.Sleep(slowThreshold + time.Millisecond)
+		time.Sleep(defaultSlowThreshold + time.Millisecond)
 	}
 
 	err := errMockedPlaceholder

core/stores/sqlx/tx.go

@@ -19,6 +19,12 @@ type (
 	}
 )
 
+// NewSessionFromTx returns a Session with the given sql.Tx.
+// Use it with caution, it's provided for other ORM to interact with.
+func NewSessionFromTx(tx *sql.Tx) Session {
+	return txSession{Tx: tx}
+}
+
 func (t txSession) Exec(q string, args ...interface{}) (sql.Result, error) {
 	return exec(t.Tx, q, args...)
 }

core/syncx/donechan_test.go

@@ -19,10 +19,8 @@ func TestDoneChanDone(t *testing.T) {
 
 	waitGroup.Add(1)
 	go func() {
-		select {
+		<-doneChan.Done()
-		case <-doneChan.Done():
+		waitGroup.Done()
-			waitGroup.Done()
-		}
 	}()
 
 	for i := 0; i < 5; i++ {

core/syncx/pool_test.go

@@ -17,10 +17,11 @@ func TestPoolGet(t *testing.T) {
 	ch := make(chan lang.PlaceholderType)
 
 	for i := 0; i < limit; i++ {
+		var fail AtomicBool
 		go func() {
 			v := stack.Get()
 			if v.(int) != 1 {
-				t.Fatal("unmatch value")
+				fail.Set(true)
 			}
 			ch <- lang.Placeholder
 		}()
@@ -30,6 +31,10 @@ func TestPoolGet(t *testing.T) {
 		case <-time.After(time.Second):
 			t.Fail()
 		}
+
+		if fail.True() {
+			t.Fatal("unmatch value")
+		}
 	}
 }
 

core/syncx/resourcemanager.go

@@ -23,6 +23,7 @@ func NewResourceManager() *ResourceManager {
 }
 
 // Close closes the manager.
+// Don't use the ResourceManager after Close() called.
 func (manager *ResourceManager) Close() error {
 	manager.lock.Lock()
 	defer manager.lock.Unlock()
@@ -34,6 +35,9 @@ func (manager *ResourceManager) Close() error {
 		}
 	}
 
+	// release resources to avoid using it later
+	manager.resources = nil
+
 	return be.Err()
 }
 

core/syncx/resourcemanager_test.go

@@ -44,3 +44,31 @@ func TestResourceManager_GetResourceError(t *testing.T) {
 		assert.NotNil(t, err)
 	}
 }
+
+func TestResourceManager_Close(t *testing.T) {
+	manager := NewResourceManager()
+	for i := 0; i < 10; i++ {
+		_, err := manager.GetResource("key", func() (io.Closer, error) {
+			return nil, errors.New("fail")
+		})
+		assert.NotNil(t, err)
+	}
+
+	if assert.NoError(t, manager.Close()) {
+		assert.Equal(t, 0, len(manager.resources))
+	}
+}
+
+func TestResourceManager_UseAfterClose(t *testing.T) {
+	manager := NewResourceManager()
+	_, err := manager.GetResource("key", func() (io.Closer, error) {
+		return nil, errors.New("fail")
+	})
+	assert.NotNil(t, err)
+	if assert.NoError(t, manager.Close()) {
+		_, err = manager.GetResource("key", func() (io.Closer, error) {
+			return nil, errors.New("fail")
+		})
+		assert.NotNil(t, err)
+	}
+}

core/syncx/spinlock_test.go

@@ -1,11 +1,14 @@
 package syncx
 
 import (
+	"runtime"
 	"sync"
+	"sync/atomic"
 	"testing"
 	"time"
 
 	"github.com/stretchr/testify/assert"
+	"github.com/tal-tech/go-zero/core/lang"
 )
 
 func TestTryLock(t *testing.T) {
@@ -30,8 +33,6 @@ func TestSpinLockRace(t *testing.T) {
 	var wait sync.WaitGroup
 	wait.Add(1)
 	go func() {
-		lock.Lock()
-		lock.Unlock()
 		wait.Done()
 	}()
 	time.Sleep(time.Millisecond * 100)
@@ -39,3 +40,31 @@ func TestSpinLockRace(t *testing.T) {
 	wait.Wait()
 	assert.True(t, lock.TryLock())
 }
+
+func TestSpinLock_TryLock(t *testing.T) {
+	var lock SpinLock
+	var count int32
+	var wait sync.WaitGroup
+	wait.Add(2)
+	sig := make(chan lang.PlaceholderType)
+
+	go func() {
+		lock.TryLock()
+		sig <- lang.Placeholder
+		atomic.AddInt32(&count, 1)
+		runtime.Gosched()
+		lock.Unlock()
+		wait.Done()
+	}()
+
+	go func() {
+		<-sig
+		lock.Lock()
+		atomic.AddInt32(&count, 1)
+		lock.Unlock()
+		wait.Done()
+	}()
+
+	wait.Wait()
+	assert.Equal(t, int32(2), atomic.LoadInt32(&count))
+}

core/timex/ticker_test.go

@@ -41,3 +41,10 @@ func TestFakeTicker(t *testing.T) {
 	assert.Nil(t, ticker.Wait(time.Second))
 	assert.Equal(t, int32(total), atomic.LoadInt32(&count))
 }
+
+func TestFakeTickerTimeout(t *testing.T) {
+	ticker := NewFakeTicker()
+	defer ticker.Stop()
+
+	assert.NotNil(t, ticker.Wait(time.Millisecond))
+}

core/trace/agent.go

@@ -0,0 +1,86 @@
+package trace
+
+import (
+	"fmt"
+	"sync"
+
+	"github.com/tal-tech/go-zero/core/lang"
+	"github.com/tal-tech/go-zero/core/logx"
+	"go.opentelemetry.io/otel"
+	"go.opentelemetry.io/otel/exporters/jaeger"
+	"go.opentelemetry.io/otel/exporters/zipkin"
+	"go.opentelemetry.io/otel/propagation"
+	"go.opentelemetry.io/otel/sdk/resource"
+	sdktrace "go.opentelemetry.io/otel/sdk/trace"
+	semconv "go.opentelemetry.io/otel/semconv/v1.4.0"
+)
+
+const (
+	kindJaeger = "jaeger"
+	kindZipkin = "zipkin"
+)
+
+var (
+	agents = make(map[string]lang.PlaceholderType)
+	lock   sync.Mutex
+)
+
+// StartAgent starts a opentelemetry agent.
+func StartAgent(c Config) {
+	lock.Lock()
+	defer lock.Unlock()
+
+	_, ok := agents[c.Endpoint]
+	if ok {
+		return
+	}
+
+	// if error happens, let later calls run.
+	if err := startAgent(c); err != nil {
+		return
+	}
+
+	agents[c.Endpoint] = lang.Placeholder
+}
+
+func createExporter(c Config) (sdktrace.SpanExporter, error) {
+	// Just support jaeger and zipkin now, more for later
+	switch c.Batcher {
+	case kindJaeger:
+		return jaeger.New(jaeger.WithCollectorEndpoint(jaeger.WithEndpoint(c.Endpoint)))
+	case kindZipkin:
+		return zipkin.New(c.Endpoint)
+	default:
+		return nil, fmt.Errorf("unknown exporter: %s", c.Batcher)
+	}
+}
+
+func startAgent(c Config) error {
+	opts := []sdktrace.TracerProviderOption{
+		// Set the sampling rate based on the parent span to 100%
+		sdktrace.WithSampler(sdktrace.ParentBased(sdktrace.TraceIDRatioBased(c.Sampler))),
+		// Record information about this application in an Resource.
+		sdktrace.WithResource(resource.NewSchemaless(semconv.ServiceNameKey.String(c.Name))),
+	}
+
+	if len(c.Endpoint) > 0 {
+		exp, err := createExporter(c)
+		if err != nil {
+			logx.Error(err)
+			return err
+		}
+
+		// Always be sure to batch in production.
+		opts = append(opts, sdktrace.WithBatcher(exp))
+	}
+
+	tp := sdktrace.NewTracerProvider(opts...)
+	otel.SetTracerProvider(tp)
+	otel.SetTextMapPropagator(propagation.NewCompositeTextMapPropagator(
+		propagation.TraceContext{}, propagation.Baggage{}))
+	otel.SetErrorHandler(otel.ErrorHandlerFunc(func(err error) {
+		logx.Errorf("[otel] error: %v", err)
+	}))
+
+	return nil
+}

core/trace/agent_test.go

@@ -0,0 +1,54 @@
+package trace
+
+import (
+	"testing"
+
+	"github.com/stretchr/testify/assert"
+	"github.com/tal-tech/go-zero/core/logx"
+)
+
+func TestStartAgent(t *testing.T) {
+	logx.Disable()
+
+	const (
+		endpoint1 = "localhost:1234"
+		endpoint2 = "remotehost:1234"
+		endpoint3 = "localhost:1235"
+	)
+	c1 := Config{
+		Name: "foo",
+	}
+	c2 := Config{
+		Name:     "bar",
+		Endpoint: endpoint1,
+		Batcher:  kindJaeger,
+	}
+	c3 := Config{
+		Name:     "any",
+		Endpoint: endpoint2,
+		Batcher:  kindZipkin,
+	}
+	c4 := Config{
+		Name:     "bla",
+		Endpoint: endpoint3,
+		Batcher:  "otlp",
+	}
+
+	StartAgent(c1)
+	StartAgent(c1)
+	StartAgent(c2)
+	StartAgent(c3)
+	StartAgent(c4)
+
+	lock.Lock()
+	defer lock.Unlock()
+
+	// because remotehost cannot be resolved
+	assert.Equal(t, 2, len(agents))
+	_, ok := agents[""]
+	assert.True(t, ok)
+	_, ok = agents[endpoint1]
+	assert.True(t, ok)
+	_, ok = agents[endpoint2]
+	assert.False(t, ok)
+}

core/trace/attributes.go

@@ -1,4 +1,4 @@
-package opentelemetry
+package trace
 
 import (
 	"go.opentelemetry.io/otel/attribute"
@@ -34,7 +34,7 @@ var (
 	RPCMessageTypeReceived = RPCMessageTypeKey.String("RECEIVED")
 )
 
-// StatusCodeAttr returns a attribute.KeyValue that represents the give c.
+// StatusCodeAttr returns an attribute.KeyValue that represents the give c.
 func StatusCodeAttr(c gcodes.Code) attribute.KeyValue {
 	return GRPCStatusCodeKey.Int64(int64(c))
 }

core/trace/attributes_test.go

@@ -0,0 +1,12 @@
+package trace
+
+import (
+	"testing"
+
+	"github.com/stretchr/testify/assert"
+	gcodes "google.golang.org/grpc/codes"
+)
+
+func TestStatusCodeAttr(t *testing.T) {
+	assert.Equal(t, GRPCStatusCodeKey.Int(int(gcodes.DataLoss)), StatusCodeAttr(gcodes.DataLoss))
+}

core/trace/carrier.go

@@ -1,43 +0,0 @@
-package trace
-
-import (
-	"errors"
-	"net/http"
-	"strings"
-)
-
-// ErrInvalidCarrier indicates an error that the carrier is invalid.
-var ErrInvalidCarrier = errors.New("invalid carrier")
-
-type (
-	// Carrier interface wraps the Get and Set method.
-	Carrier interface {
-		Get(key string) string
-		Set(key, value string)
-	}
-
-	httpCarrier http.Header
-	// grpc metadata takes keys as case insensitive
-	grpcCarrier map[string][]string
-)
-
-func (h httpCarrier) Get(key string) string {
-	return http.Header(h).Get(key)
-}
-
-func (h httpCarrier) Set(key, val string) {
-	http.Header(h).Set(key, val)
-}
-
-func (g grpcCarrier) Get(key string) string {
-	if vals, ok := g[strings.ToLower(key)]; ok && len(vals) > 0 {
-		return vals[0]
-	}
-
-	return ""
-}
-
-func (g grpcCarrier) Set(key, val string) {
-	key = strings.ToLower(key)
-	g[key] = append(g[key], val)
-}

core/trace/carrier_test.go

@@ -1,58 +0,0 @@
-package trace
-
-import (
-	"net/http"
-	"net/http/httptest"
-	"testing"
-
-	"github.com/stretchr/testify/assert"
-	"github.com/tal-tech/go-zero/core/stringx"
-)
-
-func TestHttpCarrier(t *testing.T) {
-	tests := []map[string]string{
-		{},
-		{
-			"first":  "a",
-			"second": "b",
-		},
-	}
-
-	for _, test := range tests {
-		t.Run(stringx.RandId(), func(t *testing.T) {
-			req := httptest.NewRequest(http.MethodGet, "http://localhost", nil)
-			carrier := httpCarrier(req.Header)
-			for k, v := range test {
-				carrier.Set(k, v)
-			}
-			for k, v := range test {
-				assert.Equal(t, v, carrier.Get(k))
-			}
-			assert.Equal(t, "", carrier.Get("none"))
-		})
-	}
-}
-
-func TestGrpcCarrier(t *testing.T) {
-	tests := []map[string]string{
-		{},
-		{
-			"first":  "a",
-			"second": "b",
-		},
-	}
-
-	for _, test := range tests {
-		t.Run(stringx.RandId(), func(t *testing.T) {
-			m := make(map[string][]string)
-			carrier := grpcCarrier(m)
-			for k, v := range test {
-				carrier.Set(k, v)
-			}
-			for k, v := range test {
-				assert.Equal(t, v, carrier.Get(k))
-			}
-			assert.Equal(t, "", carrier.Get("none"))
-		})
-	}
-}

core/trace/config.go

@@ -1,4 +1,4 @@
-package opentelemetry
+package trace
 
 // TraceName represents the tracing name.
 const TraceName = "go-zero"
@@ -8,5 +8,5 @@ type Config struct {
 	Name     string  `json:",optional"`
 	Endpoint string  `json:",optional"`
 	Sampler  float64 `json:",default=1.0"`
-	Batcher  string  `json:",default=jaeger"`
+	Batcher  string  `json:",default=jaeger,options=jaeger|zipkin"`
 }

core/trace/constants.go

@@ -1,8 +0,0 @@
-package trace
-
-const (
-	// TraceIdKey is the trace id header.
-	TraceIdKey = "X-Trace-ID"
-
-	spanIdKey = "X-Span-ID"
-)

core/trace/message.go

@@ -1,4 +1,4 @@
-package opentelemetry
+package trace
 
 import (
 	"context"

core/trace/noop.go

@@ -1,33 +0,0 @@
-package trace
-
-import (
-	"context"
-
-	"github.com/tal-tech/go-zero/core/trace/tracespec"
-)
-
-var emptyNoopSpan = noopSpan{}
-
-type noopSpan struct{}
-
-func (s noopSpan) Finish() {
-}
-
-func (s noopSpan) Follow(ctx context.Context, serviceName, operationName string) (context.Context, tracespec.Trace) {
-	return ctx, emptyNoopSpan
-}
-
-func (s noopSpan) Fork(ctx context.Context, serviceName, operationName string) (context.Context, tracespec.Trace) {
-	return ctx, emptyNoopSpan
-}
-
-func (s noopSpan) SpanId() string {
-	return ""
-}
-
-func (s noopSpan) TraceId() string {
-	return ""
-}
-
-func (s noopSpan) Visit(fn func(key, val string) bool) {
-}

core/trace/noop_test.go

@@ -1,32 +0,0 @@
-package trace
-
-import (
-	"context"
-	"testing"
-
-	"github.com/stretchr/testify/assert"
-)
-
-func TestNoopSpan_Fork(t *testing.T) {
-	ctx, span := emptyNoopSpan.Fork(context.Background(), "", "")
-	assert.Equal(t, emptyNoopSpan, span)
-	assert.Equal(t, context.Background(), ctx)
-}
-
-func TestNoopSpan_Follow(t *testing.T) {
-	ctx, span := emptyNoopSpan.Follow(context.Background(), "", "")
-	assert.Equal(t, emptyNoopSpan, span)
-	assert.Equal(t, context.Background(), ctx)
-}
-
-func TestNoopSpan(t *testing.T) {
-	emptyNoopSpan.Visit(func(key, val string) bool {
-		assert.Fail(t, "should not go here")
-		return true
-	})
-
-	ctx, span := emptyNoopSpan.Follow(context.Background(), "", "")
-	assert.Equal(t, context.Background(), ctx)
-	assert.Equal(t, "", span.TraceId())
-	assert.Equal(t, "", span.SpanId())
-}

core/trace/opentelemetry/agent.go

@@ -1,68 +0,0 @@
-package opentelemetry
-
-import (
-	"sync"
-
-	"github.com/tal-tech/go-zero/core/logx"
-	"github.com/tal-tech/go-zero/core/syncx"
-	"go.opentelemetry.io/otel"
-	"go.opentelemetry.io/otel/exporters/jaeger"
-	"go.opentelemetry.io/otel/propagation"
-	"go.opentelemetry.io/otel/sdk/resource"
-	sdktrace "go.opentelemetry.io/otel/sdk/trace"
-	semconv "go.opentelemetry.io/otel/semconv/v1.4.0"
-)
-
-var (
-	once    sync.Once
-	enabled syncx.AtomicBool
-)
-
-// Enabled returns if opentelemetry is enabled.
-func Enabled() bool {
-	return enabled.True()
-}
-
-// StartAgent starts a opentelemetry agent.
-func StartAgent(c Config) {
-	once.Do(func() {
-		if len(c.Endpoint) == 0 {
-			return
-		}
-
-		// Just support jaeger now
-		if c.Batcher != "jaeger" {
-			return
-		}
-
-		exp, err := jaeger.New(jaeger.WithCollectorEndpoint(jaeger.WithEndpoint(c.Endpoint)))
-		if err != nil {
-			logx.Error(err)
-			return
-		}
-
-		tp := sdktrace.NewTracerProvider(
-			// Set the sampling rate based on the parent span to 100%
-			sdktrace.WithSampler(sdktrace.ParentBased(sdktrace.TraceIDRatioBased(c.Sampler))),
-			// Always be sure to batch in production.
-			sdktrace.WithBatcher(exp),
-			// Record information about this application in an Resource.
-			sdktrace.WithResource(resource.NewSchemaless(semconv.ServiceNameKey.String(c.Name))),
-		)
-
-		otel.SetTracerProvider(tp)
-		otel.SetTextMapPropagator(propagation.NewCompositeTextMapPropagator(propagation.TraceContext{}, propagation.Baggage{}))
-		otel.SetErrorHandler(otelErrHandler{})
-
-		enabled.Set(true)
-	})
-}
-
-// errHandler handing otel errors.
-type otelErrHandler struct{}
-
-var _ otel.ErrorHandler = otelErrHandler{}
-
-func (o otelErrHandler) Handle(err error) {
-	logx.Errorf("[otel] error: %v", err)
-}

core/trace/opentelemetry/clientstream.go

@@ -1,121 +0,0 @@
-package opentelemetry
-
-import (
-	"context"
-	"io"
-
-	"google.golang.org/grpc"
-	"google.golang.org/grpc/metadata"
-)
-
-const (
-	receiveEndEvent streamEventType = iota
-	errorEvent
-)
-
-type (
-	streamEventType int
-
-	streamEvent struct {
-		Type streamEventType
-		Err  error
-	}
-
-	clientStream struct {
-		grpc.ClientStream
-		Finished          chan error
-		desc              *grpc.StreamDesc
-		events            chan streamEvent
-		eventsDone        chan struct{}
-		receivedMessageID int
-		sentMessageID     int
-	}
-)
-
-func (w *clientStream) RecvMsg(m interface{}) error {
-	err := w.ClientStream.RecvMsg(m)
-	if err == nil && !w.desc.ServerStreams {
-		w.sendStreamEvent(receiveEndEvent, nil)
-	} else if err == io.EOF {
-		w.sendStreamEvent(receiveEndEvent, nil)
-	} else if err != nil {
-		w.sendStreamEvent(errorEvent, err)
-	} else {
-		w.receivedMessageID++
-		MessageReceived.Event(w.Context(), w.receivedMessageID, m)
-	}
-
-	return err
-}
-
-func (w *clientStream) SendMsg(m interface{}) error {
-	err := w.ClientStream.SendMsg(m)
-	w.sentMessageID++
-	MessageSent.Event(w.Context(), w.sentMessageID, m)
-	if err != nil {
-		w.sendStreamEvent(errorEvent, err)
-	}
-
-	return err
-}
-
-func (w *clientStream) Header() (metadata.MD, error) {
-	md, err := w.ClientStream.Header()
-	if err != nil {
-		w.sendStreamEvent(errorEvent, err)
-	}
-
-	return md, err
-}
-
-func (w *clientStream) CloseSend() error {
-	err := w.ClientStream.CloseSend()
-	if err != nil {
-		w.sendStreamEvent(errorEvent, err)
-	}
-
-	return err
-}
-
-func (w *clientStream) sendStreamEvent(eventType streamEventType, err error) {
-	select {
-	case <-w.eventsDone:
-	case w.events <- streamEvent{Type: eventType, Err: err}:
-	}
-}
-
-// WrapClientStream wraps s with given ctx and desc.
-func WrapClientStream(ctx context.Context, s grpc.ClientStream, desc *grpc.StreamDesc) *clientStream {
-	events := make(chan streamEvent)
-	eventsDone := make(chan struct{})
-	finished := make(chan error)
-
-	go func() {
-		defer close(eventsDone)
-
-		for {
-			select {
-			case event := <-events:
-				switch event.Type {
-				case receiveEndEvent:
-					finished <- nil
-					return
-				case errorEvent:
-					finished <- event.Err
-					return
-				}
-			case <-ctx.Done():
-				finished <- ctx.Err()
-				return
-			}
-		}
-	}()
-
-	return &clientStream{
-		ClientStream: s,
-		desc:         desc,
-		events:       events,
-		eventsDone:   eventsDone,
-		Finished:     finished,
-	}
-}

core/trace/opentelemetry/serverstream.go

@@ -1,47 +0,0 @@
-package opentelemetry
-
-import (
-	"context"
-
-	"google.golang.org/grpc"
-)
-
-// serverStream wraps around the embedded grpc.ServerStream, and intercepts the RecvMsg and
-// SendMsg method call.
-type serverStream struct {
-	grpc.ServerStream
-	ctx context.Context
-
-	receivedMessageID int
-	sentMessageID     int
-}
-
-func (w *serverStream) Context() context.Context {
-	return w.ctx
-}
-
-func (w *serverStream) RecvMsg(m interface{}) error {
-	err := w.ServerStream.RecvMsg(m)
-	if err == nil {
-		w.receivedMessageID++
-		MessageReceived.Event(w.Context(), w.receivedMessageID, m)
-	}
-
-	return err
-}
-
-func (w *serverStream) SendMsg(m interface{}) error {
-	err := w.ServerStream.SendMsg(m)
-	w.sentMessageID++
-	MessageSent.Event(w.Context(), w.sentMessageID, m)
-
-	return err
-}
-
-// WrapServerStream wraps the given grpc.ServerStream with the given context.
-func WrapServerStream(ctx context.Context, ss grpc.ServerStream) *serverStream {
-	return &serverStream{
-		ServerStream: ss,
-		ctx:          ctx,
-	}
-}

core/trace/propagator.go

@@ -1,90 +0,0 @@
-package trace
-
-import (
-	"net/http"
-
-	"google.golang.org/grpc/metadata"
-)
-
-const (
-	// HttpFormat means http carrier format.
-	HttpFormat = iota
-	// GrpcFormat means grpc carrier format.
-	GrpcFormat
-)
-
-var (
-	emptyHttpPropagator httpPropagator
-	emptyGrpcPropagator grpcPropagator
-)
-
-type (
-	// Propagator interface wraps the Extract and Inject methods.
-	Propagator interface {
-		Extract(carrier interface{}) (Carrier, error)
-		Inject(carrier interface{}) (Carrier, error)
-	}
-
-	httpPropagator struct{}
-	grpcPropagator struct{}
-)
-
-func (h httpPropagator) Extract(carrier interface{}) (Carrier, error) {
-	if c, ok := carrier.(http.Header); ok {
-		return httpCarrier(c), nil
-	}
-
-	return nil, ErrInvalidCarrier
-}
-
-func (h httpPropagator) Inject(carrier interface{}) (Carrier, error) {
-	if c, ok := carrier.(http.Header); ok {
-		return httpCarrier(c), nil
-	}
-
-	return nil, ErrInvalidCarrier
-}
-
-func (g grpcPropagator) Extract(carrier interface{}) (Carrier, error) {
-	if c, ok := carrier.(metadata.MD); ok {
-		return grpcCarrier(c), nil
-	}
-
-	return nil, ErrInvalidCarrier
-}
-
-func (g grpcPropagator) Inject(carrier interface{}) (Carrier, error) {
-	if c, ok := carrier.(metadata.MD); ok {
-		return grpcCarrier(c), nil
-	}
-
-	return nil, ErrInvalidCarrier
-}
-
-// Extract extracts tracing information from carrier with given format.
-func Extract(format, carrier interface{}) (Carrier, error) {
-	switch v := format.(type) {
-	case int:
-		if v == HttpFormat {
-			return emptyHttpPropagator.Extract(carrier)
-		} else if v == GrpcFormat {
-			return emptyGrpcPropagator.Extract(carrier)
-		}
-	}
-
-	return nil, ErrInvalidCarrier
-}
-
-// Inject injects tracing information into carrier with given format.
-func Inject(format, carrier interface{}) (Carrier, error) {
-	switch v := format.(type) {
-	case int:
-		if v == HttpFormat {
-			return emptyHttpPropagator.Inject(carrier)
-		} else if v == GrpcFormat {
-			return emptyGrpcPropagator.Inject(carrier)
-		}
-	}
-
-	return nil, ErrInvalidCarrier
-}

core/trace/propagator_test.go

@@ -1,68 +0,0 @@
-package trace
-
-import (
-	"net/http"
-	"net/http/httptest"
-	"testing"
-
-	"github.com/stretchr/testify/assert"
-	"google.golang.org/grpc/metadata"
-)
-
-func TestHttpPropagator_Extract(t *testing.T) {
-	req := httptest.NewRequest(http.MethodGet, "http://localhost", nil)
-	req.Header.Set(TraceIdKey, "trace")
-	req.Header.Set(spanIdKey, "span")
-	carrier, err := Extract(HttpFormat, req.Header)
-	assert.Nil(t, err)
-	assert.Equal(t, "trace", carrier.Get(TraceIdKey))
-	assert.Equal(t, "span", carrier.Get(spanIdKey))
-
-	_, err = Extract(HttpFormat, req)
-	assert.Equal(t, ErrInvalidCarrier, err)
-}
-
-func TestHttpPropagator_Inject(t *testing.T) {
-	req := httptest.NewRequest(http.MethodGet, "http://localhost", nil)
-	req.Header.Set(TraceIdKey, "trace")
-	req.Header.Set(spanIdKey, "span")
-	carrier, err := Inject(HttpFormat, req.Header)
-	assert.Nil(t, err)
-	assert.Equal(t, "trace", carrier.Get(TraceIdKey))
-	assert.Equal(t, "span", carrier.Get(spanIdKey))
-
-	_, err = Inject(HttpFormat, req)
-	assert.Equal(t, ErrInvalidCarrier, err)
-}
-
-func TestGrpcPropagator_Extract(t *testing.T) {
-	md := metadata.New(map[string]string{
-		TraceIdKey: "trace",
-		spanIdKey:  "span",
-	})
-	carrier, err := Extract(GrpcFormat, md)
-	assert.Nil(t, err)
-	assert.Equal(t, "trace", carrier.Get(TraceIdKey))
-	assert.Equal(t, "span", carrier.Get(spanIdKey))
-
-	_, err = Extract(GrpcFormat, 1)
-	assert.Equal(t, ErrInvalidCarrier, err)
-	_, err = Extract(nil, 1)
-	assert.Equal(t, ErrInvalidCarrier, err)
-}
-
-func TestGrpcPropagator_Inject(t *testing.T) {
-	md := metadata.New(map[string]string{
-		TraceIdKey: "trace",
-		spanIdKey:  "span",
-	})
-	carrier, err := Inject(GrpcFormat, md)
-	assert.Nil(t, err)
-	assert.Equal(t, "trace", carrier.Get(TraceIdKey))
-	assert.Equal(t, "span", carrier.Get(spanIdKey))
-
-	_, err = Inject(GrpcFormat, 1)
-	assert.Equal(t, ErrInvalidCarrier, err)
-	_, err = Inject(nil, 1)
-	assert.Equal(t, ErrInvalidCarrier, err)
-}