config: add helper funcs

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

.github/workflows/dependabot-automerge.yml

@@ -25,7 +25,7 @@ jobs:
           || (github.event.workflow_run.event == 'push' && github.event.workflow_run.pull_requests[0].base.ref == github.event.repository.default_branch ))
     steps:
       - name: Approve Changes and Merge changes if label 'dependencies' is set
-        uses: actions/github-script@v4
+        uses: actions/github-script@v5
         with:
           github-token: ${{ secrets.GITHUB_TOKEN }}
           script: |

.golangci.yml

@@ -30,7 +30,7 @@ linters:
     - gofmt
     - gofumpt
     - goimports
-    - golint
+    - revive
     - gosec
     - makezero
     - misspell

broker/memory.go

@@ -114,8 +114,8 @@ func (m *memoryBroker) Publish(ctx context.Context, topic string, msg *Message,
 }
 
 type msgWrapper struct {
-	topic string
 	body  interface{}
+	topic string
 }
 
 func (m *memoryBroker) BatchPublish(ctx context.Context, msgs []*Message, opts ...PublishOption) error {
@@ -172,15 +172,20 @@ func (m *memoryBroker) publish(ctx context.Context, vs []msgWrapper, opts ...Pub
 		}
 
 		for _, sub := range subs {
+			if sub.opts.BatchErrorHandler != nil {
+				beh = sub.opts.BatchErrorHandler
+			}
+			if sub.opts.ErrorHandler != nil {
+				eh = sub.opts.ErrorHandler
+			}
+
+			switch {
 			// batch processing
-			if sub.batchhandler != nil {
+			case sub.batchhandler != nil:
 				if err = sub.batchhandler(ms); err != nil {
 					ms.SetError(err)
-					if sub.opts.BatchErrorHandler != nil {
-						beh = sub.opts.BatchErrorHandler
-					}
 					if beh != nil {
-						beh(ms)
+						_ = beh(ms)
 					} else if m.opts.Logger.V(logger.ErrorLevel) {
 						m.opts.Logger.Error(m.opts.Context, err.Error())
 					}
@@ -189,17 +194,13 @@ func (m *memoryBroker) publish(ctx context.Context, vs []msgWrapper, opts ...Pub
 						m.opts.Logger.Errorf(m.opts.Context, "ack failed: %v", err)
 					}
 				}
-			}
-			// single processing
-			if sub.handler != nil {
+				// single processing
+			case sub.handler != nil:
 				for _, p := range ms {
 					if err = sub.handler(p); err != nil {
 						p.SetError(err)
-						if sub.opts.ErrorHandler != nil {
-							eh = sub.opts.ErrorHandler
-						}
 						if eh != nil {
-							eh(p)
+							_ = eh(p)
 						} else if m.opts.Logger.V(logger.ErrorLevel) {
 							m.opts.Logger.Error(m.opts.Context, err.Error())
 						}

broker/memory_test.go

@@ -53,6 +53,7 @@ func TestMemoryBatchBroker(t *testing.T) {
 		t.Fatalf("Unexpected connect error %v", err)
 	}
 }
+
 func TestMemoryBroker(t *testing.T) {
 	b := NewBroker()
 	ctx := context.Background()

codec/codec.go

@@ -25,7 +25,7 @@ var (
 
 var (
 	// DefaultMaxMsgSize specifies how much data codec can handle
-	DefaultMaxMsgSize int = 1024 * 1024 * 4 // 4Mb
+	DefaultMaxMsgSize = 1024 * 1024 * 4 // 4Mb
 	// DefaultCodec is the global default codec
 	DefaultCodec Codec = NewCodec()
 	// DefaultTagName specifies struct tag name to control codec Marshal/Unmarshal

codec/context.go

@@ -0,0 +1,34 @@
+package codec
+
+import (
+	"context"
+)
+
+type codecKey struct{}
+
+// FromContext returns codec from context
+func FromContext(ctx context.Context) (Codec, bool) {
+	if ctx == nil {
+		return nil, false
+	}
+	c, ok := ctx.Value(codecKey{}).(Codec)
+	return c, ok
+}
+
+// NewContext put codec in context
+func NewContext(ctx context.Context, c Codec) context.Context {
+	if ctx == nil {
+		ctx = context.Background()
+	}
+	return context.WithValue(ctx, codecKey{}, c)
+}
+
+// SetOption returns a function to setup a context with given value
+func SetOption(k, v interface{}) Option {
+	return func(o *Options) {
+		if o.Context == nil {
+			o.Context = context.Background()
+		}
+		o.Context = context.WithValue(o.Context, k, v)
+	}
+}

codec/frame.go

@@ -4,3 +4,31 @@ package codec
 type Frame struct {
 	Data []byte
 }
+
+func (m *Frame) MarshalJSON() ([]byte, error) {
+	return m.Data, nil
+}
+
+func (m *Frame) UnmarshalJSON(data []byte) error {
+	m.Data = data
+	return nil
+}
+
+func (m *Frame) ProtoMessage() {}
+
+func (m *Frame) Reset() {
+	*m = Frame{}
+}
+
+func (m *Frame) String() string {
+	return string(m.Data)
+}
+
+func (m *Frame) Marshal() ([]byte, error) {
+	return m.Data, nil
+}
+
+func (m *Frame) Unmarshal(data []byte) error {
+	m.Data = data
+	return nil
+}

codec/options.go

@@ -19,12 +19,12 @@ type Options struct {
 	Logger logger.Logger
 	// Tracer used for tracing
 	Tracer tracer.Tracer
-	// MaxMsgSize specifies max messages size that reads by codec
-	MaxMsgSize int
-	// TagName specifies tag name in struct to control codec
-	TagName string
 	// Context stores additional codec options
 	Context context.Context
+	// TagName specifies tag name in struct to control codec
+	TagName string
+	// MaxMsgSize specifies max messages size that reads by codec
+	MaxMsgSize int
 }
 
 // MaxMsgSize sets the max message size

config/config.go

@@ -13,7 +13,7 @@ var DefaultConfig Config = NewConfig()
 // DefaultWatcherMinInterval default min interval for poll changes
 var DefaultWatcherMinInterval = 5 * time.Second
 
-// DefaultWatcherMinInterval default max interval for poll changes
+// DefaultWatcherMaxInterval default max interval for poll changes
 var DefaultWatcherMaxInterval = 9 * time.Second
 
 var (
@@ -64,3 +64,53 @@ func Load(ctx context.Context, cs []Config, opts ...LoadOption) error {
 	}
 	return nil
 }
+
+var (
+	DefaultAfterLoad = func(ctx context.Context, c Config) error {
+		for _, fn := range c.Options().AfterLoad {
+			if err := fn(ctx, c); err != nil {
+				c.Options().Logger.Errorf(ctx, "%s AfterLoad err: %v", c.String(), err)
+				if !c.Options().AllowFail {
+					return err
+				}
+			}
+		}
+		return nil
+	}
+
+	DefaultAfterSave = func(ctx context.Context, c Config) error {
+		for _, fn := range c.Options().AfterSave {
+			if err := fn(ctx, c); err != nil {
+				c.Options().Logger.Errorf(ctx, "%s AfterSave err: %v", c.String(), err)
+				if !c.Options().AllowFail {
+					return err
+				}
+			}
+		}
+		return nil
+	}
+
+	DefaultBeforeLoad = func(ctx context.Context, c Config) error {
+		for _, fn := range c.Options().BeforeLoad {
+			if err := fn(ctx, c); err != nil {
+				c.Options().Logger.Errorf(ctx, "%s BeforeLoad err: %v", c.String(), err)
+				if !c.Options().AllowFail {
+					return err
+				}
+			}
+		}
+		return nil
+	}
+
+	DefaultBeforeSave = func(ctx context.Context, c Config) error {
+		for _, fn := range c.Options().BeforeSave {
+			if err := fn(ctx, c); err != nil {
+				c.Options().Logger.Errorf(ctx, "%s BeforeSavec err: %v", c.String(), err)
+				if !c.Options().AllowFail {
+					return err
+				}
+			}
+		}
+		return nil
+	}
+)

config/default.go

@@ -27,10 +27,8 @@ func (c *defaultConfig) Init(opts ...Option) error {
 }
 
 func (c *defaultConfig) Load(ctx context.Context, opts ...LoadOption) error {
-	for _, fn := range c.opts.BeforeLoad {
-		if err := fn(ctx, c); err != nil && !c.opts.AllowFail {
-			return err
-		}
+	if err := DefaultBeforeLoad(ctx, c); err != nil {
+		return err
 	}
 
 	options := NewLoadOptions(opts...)
@@ -48,20 +46,26 @@ func (c *defaultConfig) Load(ctx context.Context, opts ...LoadOption) error {
 	}
 
 	src, err := rutil.Zero(dst)
-	if err == nil {
-		if err = fillValues(reflect.ValueOf(src), c.opts.StructTag); err == nil {
-			err = mergo.Merge(dst, src, mopts...)
-		}
-	}
-
-	if err != nil && !c.opts.AllowFail {
-		return err
-	}
-
-	for _, fn := range c.opts.AfterLoad {
-		if err := fn(ctx, c); err != nil && !c.opts.AllowFail {
+	if err != nil {
+		if !c.opts.AllowFail {
 			return err
 		}
+		return DefaultAfterLoad(ctx, c)
+	}
+
+	if err = fillValues(reflect.ValueOf(src), c.opts.StructTag); err == nil {
+		err = mergo.Merge(dst, src, mopts...)
+	}
+
+	if err != nil {
+		c.opts.Logger.Errorf(ctx, "default load error: %v", err)
+		if !c.opts.AllowFail {
+			return err
+		}
+	}
+
+	if err := DefaultAfterLoad(ctx, c); err != nil {
+		return err
 	}
 
 	return nil
@@ -247,16 +251,12 @@ func fillValues(valueOf reflect.Value, tname string) error {
 }
 
 func (c *defaultConfig) Save(ctx context.Context, opts ...SaveOption) error {
-	for _, fn := range c.opts.BeforeSave {
-		if err := fn(ctx, c); err != nil && !c.opts.AllowFail {
-			return err
-		}
+	if err := DefaultBeforeSave(ctx, c); err != nil {
+		return err
 	}
 
-	for _, fn := range c.opts.AfterSave {
-		if err := fn(ctx, c); err != nil && !c.opts.AllowFail {
-			return err
-		}
+	if err := DefaultAfterSave(ctx, c); err != nil {
+		return err
 	}
 
 	return nil

config/default_test.go

@@ -48,5 +48,5 @@ func TestDefault(t *testing.T) {
 		t.Fatal("AfterLoad option not working")
 	}
 	_ = conf
-	//t.Logf("%#+v\n", conf)
+	// t.Logf("%#+v\n", conf)
 }

flow/default.go

@@ -20,13 +20,13 @@ type microFlow struct {
 }
 
 type microWorkflow struct {
-	id   string
-	g    *dag.AcyclicGraph
-	init bool
-	sync.RWMutex
 	opts   Options
+	g      *dag.AcyclicGraph
 	steps  map[string]Step
+	id     string
 	status Status
+	sync.RWMutex
+	init bool
 }
 
 func (w *microWorkflow) ID() string {
@@ -264,17 +264,16 @@ func (w *microWorkflow) Execute(ctx context.Context, req *Message, opts ...Execu
 							}
 							cherr <- serr
 							return
-						} else {
-							if werr := stepStore.Write(ctx, filepath.Join(step.ID(), "rsp"), rsp); werr != nil {
-								w.opts.Logger.Errorf(ctx, "store write error: %v", werr)
-								cherr <- werr
-								return
-							}
-							if werr := stepStore.Write(ctx, filepath.Join(step.ID(), "status"), &codec.Frame{Data: []byte(StatusSuccess.String())}); werr != nil {
-								w.opts.Logger.Errorf(ctx, "store write error: %v", werr)
-								cherr <- werr
-								return
-							}
+						}
+						if werr := stepStore.Write(ctx, filepath.Join(step.ID(), "rsp"), rsp); werr != nil {
+							w.opts.Logger.Errorf(ctx, "store write error: %v", werr)
+							cherr <- werr
+							return
+						}
+						if werr := stepStore.Write(ctx, filepath.Join(step.ID(), "status"), &codec.Frame{Data: []byte(StatusSuccess.String())}); werr != nil {
+							w.opts.Logger.Errorf(ctx, "store write error: %v", werr)
+							cherr <- werr
+							return
 						}
 					}(cstep)
 					wg.Wait()
@@ -298,16 +297,15 @@ func (w *microWorkflow) Execute(ctx context.Context, req *Message, opts ...Execu
 						}
 						cherr <- serr
 						return
-					} else {
-						if werr := stepStore.Write(ctx, filepath.Join(cstep.ID(), "rsp"), rsp); werr != nil {
-							w.opts.Logger.Errorf(ctx, "store write error: %v", werr)
-							cherr <- werr
-							return
-						}
-						if werr := stepStore.Write(ctx, filepath.Join(cstep.ID(), "status"), &codec.Frame{Data: []byte(StatusSuccess.String())}); werr != nil {
-							cherr <- werr
-							return
-						}
+					}
+					if werr := stepStore.Write(ctx, filepath.Join(cstep.ID(), "rsp"), rsp); werr != nil {
+						w.opts.Logger.Errorf(ctx, "store write error: %v", werr)
+						cherr <- werr
+						return
+					}
+					if werr := stepStore.Write(ctx, filepath.Join(cstep.ID(), "status"), &codec.Frame{Data: []byte(StatusSuccess.String())}); werr != nil {
+						cherr <- werr
+						return
 					}
 				}
 			}
@@ -337,17 +335,14 @@ func (w *microWorkflow) Execute(ctx context.Context, req *Message, opts ...Execu
 		if werr := workflowStore.Write(w.opts.Context, "status", &codec.Frame{Data: []byte(StatusAborted.String())}); werr != nil {
 			w.opts.Logger.Errorf(w.opts.Context, "store error: %v", werr)
 		}
-		break
 	case err == nil:
 		if werr := workflowStore.Write(w.opts.Context, "status", &codec.Frame{Data: []byte(StatusSuccess.String())}); werr != nil {
 			w.opts.Logger.Errorf(w.opts.Context, "store error: %v", werr)
 		}
-		break
 	case err != nil:
 		if werr := workflowStore.Write(w.opts.Context, "status", &codec.Frame{Data: []byte(StatusFailure.String())}); werr != nil {
 			w.opts.Logger.Errorf(w.opts.Context, "store error: %v", werr)
 		}
-		break
 	}
 
 	return eid, err
@@ -429,11 +424,11 @@ func (f *microFlow) WorkflowLoad(ctx context.Context, id string) (Workflow, erro
 }
 
 type microCallStep struct {
+	rsp     *Message
+	req     *Message
 	opts    StepOptions
 	service string
 	method  string
-	rsp     *Message
-	req     *Message
 	status  Status
 }
 
@@ -499,10 +494,12 @@ func (s *microCallStep) Execute(ctx context.Context, req *Message, opts ...Execu
 	rsp := &codec.Frame{}
 	copts := []client.CallOption{client.WithRetries(0)}
 	if options.Timeout > 0 {
-		copts = append(copts, client.WithRequestTimeout(options.Timeout), client.WithDialTimeout(options.Timeout))
+		copts = append(copts,
+			client.WithRequestTimeout(options.Timeout),
+			client.WithDialTimeout(options.Timeout))
 	}
 	nctx := metadata.NewOutgoingContext(ctx, req.Header)
-	err := options.Client.Call(nctx, options.Client.NewRequest(s.service, s.method, &codec.Frame{Data: req.Body}), rsp)
+	err := options.Client.Call(nctx, options.Client.NewRequest(s.service, s.method, &codec.Frame{Data: req.Body}), rsp, copts...)
 	if err != nil {
 		return nil, err
 	}
@@ -511,10 +508,10 @@ func (s *microCallStep) Execute(ctx context.Context, req *Message, opts ...Execu
 }
 
 type microPublishStep struct {
-	opts   StepOptions
-	topic  string
 	req    *Message
 	rsp    *Message
+	opts   StepOptions
+	topic  string
 	status Status
 }
 
@@ -553,7 +550,7 @@ func (s *microPublishStep) String() string {
 	if s.opts.ID != "" {
 		return s.opts.ID
 	}
-	return fmt.Sprintf("%s", s.topic)
+	return s.topic
 }
 
 func (s *microPublishStep) Name() string {

flow/options.go

@@ -120,10 +120,10 @@ type ExecuteOptions struct {
 	Context context.Context
 	// Start step
 	Start string
-	// Reverse execution
-	Reverse bool
 	// Timeout for execution
 	Timeout time.Duration
+	// Reverse execution
+	Reverse bool
 	// Async enables async execution
 	Async bool
 }

go.mod

@@ -4,10 +4,11 @@ go 1.16
 
 require (
 	github.com/ef-ds/deque v1.0.4
-	github.com/golang-jwt/jwt/v4 v4.0.0
+	github.com/golang-jwt/jwt/v4 v4.1.0
 	github.com/imdario/mergo v0.3.12
 	github.com/patrickmn/go-cache v2.1.0+incompatible
-	github.com/silas/dag v0.0.0-20210121180416-41cf55125c34
+	github.com/silas/dag v0.0.0-20210626123444-3804bac2d6d4
 	github.com/unistack-org/micro-proto v0.0.9
-	golang.org/x/net v0.0.0-20210510120150-4163338589ed
+	golang.org/x/net v0.0.0-20210928044308-7d9f5e0b762b
+	golang.org/x/xerrors v0.0.0-20200804184101-5ec99f83aff1 // indirect
 )

go.sum

@@ -2,6 +2,8 @@ github.com/ef-ds/deque v1.0.4 h1:iFAZNmveMT9WERAkqLJ+oaABF9AcVQ5AjXem/hroniI=
 github.com/ef-ds/deque v1.0.4/go.mod h1:gXDnTC3yqvBcHbq2lcExjtAcVrOnJCbMcZXmuj8Z4tg=
 github.com/golang-jwt/jwt/v4 v4.0.0 h1:RAqyYixv1p7uEnocuy8P1nru5wprCh/MH2BIlW5z5/o=
 github.com/golang-jwt/jwt/v4 v4.0.0/go.mod h1:/xlHOz8bRuivTWchD4jCa+NbatV+wEUSzwAxVc6locg=
+github.com/golang-jwt/jwt/v4 v4.1.0 h1:XUgk2Ex5veyVFVeLm0xhusUTQybEbexJXrvPNOKkSY0=
+github.com/golang-jwt/jwt/v4 v4.1.0/go.mod h1:/xlHOz8bRuivTWchD4jCa+NbatV+wEUSzwAxVc6locg=
 github.com/golang/protobuf v1.5.0/go.mod h1:FsONVRAS9T7sI+LIUmWTfcYkHO4aIWwzhcaSAoJOfIk=
 github.com/google/go-cmp v0.5.5 h1:Khx7svrCpmxxtHBq5j2mp/xVjsi8hQMfNLvJFAlrGgU=
 github.com/google/go-cmp v0.5.5/go.mod h1:v8dTdLbMG2kIc/vJvl+f65V22dbkXbowE6jgT/gNBxE=
@@ -11,17 +13,22 @@ github.com/patrickmn/go-cache v2.1.0+incompatible h1:HRMgzkcYKYpi3C8ajMPV8OFXaaR
 github.com/patrickmn/go-cache v2.1.0+incompatible/go.mod h1:3Qf8kWWT7OJRJbdiICTKqZju1ZixQ/KpMGzzAfe6+WQ=
 github.com/silas/dag v0.0.0-20210121180416-41cf55125c34 h1:vBfVmA5mZhsQa2jr1FOL9nfA37N/jnbBmi5XUfviVTI=
 github.com/silas/dag v0.0.0-20210121180416-41cf55125c34/go.mod h1:7RTUFBdIRC9nZ7/3RyRNH1bdqIShrDejd1YbLwgPS+I=
+github.com/silas/dag v0.0.0-20210626123444-3804bac2d6d4 h1:fOH64AB0C3ixGf9emky61STvPJL3smxJg+1Zwx1oCdg=
+github.com/silas/dag v0.0.0-20210626123444-3804bac2d6d4/go.mod h1:7RTUFBdIRC9nZ7/3RyRNH1bdqIShrDejd1YbLwgPS+I=
 github.com/unistack-org/micro-proto v0.0.9 h1:KrWLS4FUX7UAWNAilQf70uad6ZPf/0EudeddCXllRVc=
 github.com/unistack-org/micro-proto v0.0.9/go.mod h1:Cckwmzd89gvS7ThxzZp9kQR/EOdksFQcsTAtDDyKwrg=
-golang.org/x/net v0.0.0-20210510120150-4163338589ed h1:p9UgmWI9wKpfYmgaV/IZKGdXc5qEK45tDwwwDyjS26I=
-golang.org/x/net v0.0.0-20210510120150-4163338589ed/go.mod h1:9nx3DQGgdP8bBQD5qxJ1jj9UTztislL4KSBs9R2vV5Y=
+golang.org/x/net v0.0.0-20210805182204-aaa1db679c0d h1:20cMwl2fHAzkJMEA+8J4JgqBQcQGzbisXo31MIeenXI=
+golang.org/x/net v0.0.0-20210805182204-aaa1db679c0d/go.mod h1:9nx3DQGgdP8bBQD5qxJ1jj9UTztislL4KSBs9R2vV5Y=
+golang.org/x/net v0.0.0-20210928044308-7d9f5e0b762b h1:eB48h3HiRycXNy8E0Gf5e0hv7YT6Kt14L/D73G1fuwo=
+golang.org/x/net v0.0.0-20210928044308-7d9f5e0b762b/go.mod h1:9nx3DQGgdP8bBQD5qxJ1jj9UTztislL4KSBs9R2vV5Y=
 golang.org/x/sys v0.0.0-20201119102817-f84b799fce68/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
 golang.org/x/sys v0.0.0-20210423082822-04245dca01da/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
 golang.org/x/term v0.0.0-20201126162022-7de9c90e9dd1/go.mod h1:bj7SfCRtBDWHUb9snDiAeCFNEtKQo2Wmx5Cou7ajbmo=
 golang.org/x/text v0.3.6/go.mod h1:5Zoc/QRtKVWzQhOtBMvqHzDpF6irO9z98xDceosuGiQ=
 golang.org/x/tools v0.0.0-20180917221912-90fa682c2a6e/go.mod h1:n7NCudcB/nEzxVGmLbDWY5pfWTLqBcC2KZ6jyYvM4mQ=
-golang.org/x/xerrors v0.0.0-20191204190536-9bdfabe68543 h1:E7g+9GITq07hpfrRu66IVDexMakfv52eLZ2CXBWiKr4=
 golang.org/x/xerrors v0.0.0-20191204190536-9bdfabe68543/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
+golang.org/x/xerrors v0.0.0-20200804184101-5ec99f83aff1 h1:go1bK/D/BFZV2I8cIQd1NKEZ+0owSTG1fDTci4IqFcE=
+golang.org/x/xerrors v0.0.0-20200804184101-5ec99f83aff1/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
 google.golang.org/protobuf v1.26.0-rc.1/go.mod h1:jlhhOSvTdKEhbULTjvd4ARK9grFBp09yW+WbY/TyQbw=
 google.golang.org/protobuf v1.27.1 h1:SnqbnDw1V7RiZcXPx5MEeqPv2s79L9i7BJUlG/+RurQ=
 google.golang.org/protobuf v1.27.1/go.mod h1:9q0QmTI4eRPtz6boOQmLYwt+qCgq0jsYwAQnmE0givc=

logger/default.go

@@ -81,7 +81,7 @@ func (l *defaultLogger) Fields(fields ...interface{}) Logger {
 	} else if len(fields)%2 != 0 {
 		fields = fields[:len(fields)-1]
 	}
-	nl.opts.Fields = append(l.opts.Fields, fields...)
+	nl.opts.Fields = append(nl.opts.Fields, fields...)
 	return nl
 }
 

logger/wrapper.go

@@ -125,23 +125,29 @@ func getArgs(args []interface{}) []interface{} {
 	var err error
 	for _, arg := range args {
 		val := reflect.ValueOf(arg)
-		switch val.Kind() {
-		case reflect.Ptr:
+		if val.Kind() == reflect.Ptr {
 			val = val.Elem()
 		}
 		narg := arg
-		if val.Kind() == reflect.Struct {
-			if narg, err = rutil.Zero(arg); err == nil {
-				rutil.CopyDefaults(narg, arg)
-				if flds, ferr := rutil.StructFields(narg); ferr == nil {
-					for _, fld := range flds {
-						if tv, ok := fld.Field.Tag.Lookup("logger"); ok && tv == "omit" {
-							fld.Value.Set(reflect.Zero(fld.Value.Type()))
-						}
-					}
+		if val.Kind() != reflect.Struct {
+			nargs = append(nargs, narg)
+			continue
+		}
+
+		if narg, err = rutil.Zero(arg); err != nil {
+			nargs = append(nargs, narg)
+			continue
+		}
+
+		rutil.CopyDefaults(narg, arg)
+		if flds, ferr := rutil.StructFields(narg); ferr == nil {
+			for _, fld := range flds {
+				if tv, ok := fld.Field.Tag.Lookup("logger"); ok && tv == "omit" {
+					fld.Value.Set(reflect.Zero(fld.Value.Type()))
 				}
 			}
 		}
+
 		nargs = append(nargs, narg)
 	}
 	return nargs

metadata/metadata.go

@@ -107,13 +107,16 @@ func New(size int) Metadata {
 
 // Merge merges metadata to existing metadata, overwriting if specified
 func Merge(omd Metadata, mmd Metadata, overwrite bool) Metadata {
+	var ok bool
 	nmd := Copy(omd)
 	for key, val := range mmd {
-		if _, ok := nmd[key]; ok && !overwrite {
-			// skip
-		} else if val != "" {
+		_, ok = nmd[key]
+		switch {
+		case ok && !overwrite:
+			continue
+		case val != "":
 			nmd.Set(key, val)
-		} else {
+		case ok && val == "":
 			nmd.Del(key)
 		}
 	}

meter/generate.go

@@ -3,6 +3,10 @@ package meter
 //go:generate sh -c "protoc -I./handler -I../ -I$(go list -f '{{ .Dir }}' -m github.com/unistack-org/micro-proto) --go-micro_out='components=micro|http|server',standalone=false,debug=true,paths=source_relative:./handler handler/handler.proto"
 
 import (
+
+	// import required packages
 	_ "github.com/unistack-org/micro-proto/api"
+
+	// import required packages
 	_ "github.com/unistack-org/micro-proto/openapiv2"
 )

meter/handler/handler_micro.pb.go

@@ -6,6 +6,7 @@ package handler
 
 import (
 	context "context"
+
 	api "github.com/unistack-org/micro/v3/api"
 	codec "github.com/unistack-org/micro/v3/codec"
 )

meter/handler/handler_micro_http.pb.go

@@ -6,6 +6,7 @@ package handler
 
 import (
 	context "context"
+
 	api "github.com/unistack-org/micro/v3/api"
 	codec "github.com/unistack-org/micro/v3/codec"
 	server "github.com/unistack-org/micro/v3/server"

meter/meter_test.go

@@ -33,7 +33,7 @@ func TestBuildLabels(t *testing.T) {
 	}
 
 	data := []testData{
-		testData{
+		{
 			src: []string{"zerolabel", "value3", "firstlabel", "value2"},
 			dst: []string{"firstlabel", "value2", "zerolabel", "value3"},
 		},
@@ -48,15 +48,15 @@ func TestBuildLabels(t *testing.T) {
 
 func TestBuildName(t *testing.T) {
 	data := map[string][]string{
-		`my_metric{firstlabel="value2",zerolabel="value3"}`: []string{
+		`my_metric{firstlabel="value2",zerolabel="value3"}`: {
 			"my_metric",
 			"zerolabel", "value3", "firstlabel", "value2",
 		},
-		`my_metric{broker="broker2",register="mdns",server="tcp"}`: []string{
+		`my_metric{broker="broker2",register="mdns",server="tcp"}`: {
 			"my_metric",
 			"broker", "broker1", "broker", "broker2", "server", "http", "server", "tcp", "register", "mdns",
 		},
-		`my_metric{aaa="aaa"}`: []string{
+		`my_metric{aaa="aaa"}`: {
 			"my_metric",
 			"aaa", "aaa",
 		},

network/tunnel/broker/broker.go

@@ -82,7 +82,7 @@ func (t *tunBroker) BatchPublish(ctx context.Context, msgs []*broker.Message, op
 		topic, _ := msg.Header.Get(metadata.HeaderTopic)
 		c, ok := topicMap[topic]
 		if !ok {
-			c, err := t.tunnel.Dial(ctx, topic, tunnel.DialMode(tunnel.Multicast))
+			c, err = t.tunnel.Dial(ctx, topic, tunnel.DialMode(tunnel.Multicast))
 			if err != nil {
 				return err
 			}

profiler/pprof/pprof.go

@@ -31,7 +31,7 @@ func (p *profiler) writeHeap(f *os.File) {
 		select {
 		case <-t.C:
 			runtime.GC()
-			pprof.WriteHeapProfile(f)
+			_ = pprof.WriteHeapProfile(f)
 		case <-p.exit:
 			return
 		}

router/dns.go

@@ -40,8 +40,9 @@ func (d *dns) Lookup(opts ...QueryOption) ([]Route, error) {
 	// check to see if we have the port provided in the service, e.g. go-micro-srv-foo:8000
 	host, port, err := net.SplitHostPort(options.Service)
 	if err == nil {
+		var ips []string
 		// lookup the service using A records
-		ips, err := net.LookupHost(host)
+		ips, err = net.LookupHost(host)
 		if err != nil {
 			return nil, err
 		}

server/generate.go

@@ -3,6 +3,10 @@ package server
 //go:generate sh -c "protoc -I./health -I../ -I$(go list -f '{{ .Dir }}' -m github.com/unistack-org/micro-proto) --go-micro_out='components=micro|http|server',standalone=false,debug=true,paths=source_relative:./health health/health.proto"
 
 import (
+
+	// import required packages
 	_ "github.com/unistack-org/micro-proto/api"
+
+	// import required packages
 	_ "github.com/unistack-org/micro-proto/openapiv2"
 )

server/health/health_micro.pb.go

@@ -6,6 +6,7 @@ package health
 
 import (
 	context "context"
+
 	api "github.com/unistack-org/micro/v3/api"
 	codec "github.com/unistack-org/micro/v3/codec"
 )

server/health/health_micro_http.pb.go

@@ -6,6 +6,7 @@ package health
 
 import (
 	context "context"
+
 	api "github.com/unistack-org/micro/v3/api"
 	codec "github.com/unistack-org/micro/v3/codec"
 	server "github.com/unistack-org/micro/v3/server"

server/noop.go

@@ -190,7 +190,7 @@ func (n *noopServer) Register() error {
 	}
 
 	// register the service
-	if err := DefaultRegisterFunc(service, config); err != nil {
+	if err = DefaultRegisterFunc(service, config); err != nil {
 		return err
 	}
 

server/noop_test.go

@@ -20,12 +20,8 @@ type TestMessage struct {
 	Name string
 }
 
-var (
-	numMsg int = 8
-)
-
 func (h *TestHandler) SingleSubHandler(ctx context.Context, msg *codec.Frame) error {
-	//fmt.Printf("msg %s\n", msg.Data)
+	// fmt.Printf("msg %s\n", msg.Data)
 	return nil
 }
 

server/subscriber.go

@@ -11,6 +11,7 @@ import (
 	"unicode/utf8"
 
 	"github.com/unistack-org/micro/v3/broker"
+	"github.com/unistack-org/micro/v3/codec"
 	"github.com/unistack-org/micro/v3/errors"
 	"github.com/unistack-org/micro/v3/logger"
 	"github.com/unistack-org/micro/v3/metadata"
@@ -33,13 +34,13 @@ type handler struct {
 }
 
 type subscriber struct {
-	opts       SubscriberOptions
 	typ        reflect.Type
 	subscriber interface{}
 	rcvr       reflect.Value
 	topic      string
-	handlers   []*handler
 	endpoints  []*register.Endpoint
+	handlers   []*handler
+	opts       SubscriberOptions
 }
 
 // Is this an exported - upper case - name?
@@ -72,7 +73,7 @@ func ValidateSubscriber(sub Subscriber) error {
 				if argType.Kind() != reflect.Slice {
 					return fmt.Errorf("subscriber %v dont have required signature %s", name, batchSubSig)
 				}
-				if strings.Compare(fmt.Sprintf("%s", argType), "[]interface{}") == 0 {
+				if strings.Compare(fmt.Sprintf("%v", argType), "[]interface{}") == 0 {
 					return fmt.Errorf("subscriber %v dont have required signaure %s", name, batchSubSig)
 				}
 			}
@@ -244,9 +245,9 @@ func (n *noopServer) newBatchSubHandler(sb *subscriber, opts Options) broker.Bat
 			}
 
 			reqType := handler.reqType
-
+			var cf codec.Codec
 			for _, msg := range msgs {
-				cf, err := n.newCodec(msg.ContentType())
+				cf, err = n.newCodec(msg.ContentType())
 				if err != nil {
 					return err
 				}

store/options.go

@@ -32,8 +32,8 @@ type Options struct {
 	Namespace string
 	// Addrs contains store address
 	Addrs []string
-	//Wrappers store wrapper that called before actual functions
-	//Wrappers []Wrapper
+	// Wrappers store wrapper that called before actual functions
+	// Wrappers []Wrapper
 }
 
 // NewOptions creates options struct

store/wrapper.go

@@ -5,21 +5,19 @@ import (
 )
 
 // LogfFunc function used for Logf method
-//type LogfFunc func(ctx context.Context, level Level, msg string, args ...interface{})
-
-//type Wrapper interface {
-// Logf logs message with needed level
-//Logf(LogfFunc) LogfFunc
-//}
+// type LogfFunc func(ctx context.Context, level Level, msg string, args ...interface{})
+// type Wrapper interface {
+//   Logf logs message with needed level
+//   Logf(LogfFunc) LogfFunc
+// }
 
+// NamespaceStore wrap store with namespace
 type NamespaceStore struct {
 	s  Store
 	ns string
 }
 
-var (
-	_ Store = &NamespaceStore{}
-)
+var _ Store = &NamespaceStore{}
 
 func NewNamespaceStore(s Store, ns string) Store {
 	return &NamespaceStore{s: s, ns: ns}
@@ -69,11 +67,11 @@ func (w *NamespaceStore) String() string {
 	return w.s.String()
 }
 
-//type NamespaceWrapper struct{}
+// type NamespaceWrapper struct{}
 
-//func NewNamespaceWrapper() Wrapper {
+// func NewNamespaceWrapper() Wrapper {
 //	return &NamespaceWrapper{}
-//}
+// }
 
 /*
 func (w *OmitWrapper) Logf(fn LogfFunc) LogfFunc {

util/http/http_test.go

@@ -3,6 +3,7 @@
 package http
 
 import (
+	"io"
 	"net"
 	"net/http"
 	"testing"
@@ -80,5 +81,4 @@ func TestRoundTripper(t *testing.T) {
 	if string(b) != "hello world" {
 		t.Fatal("response is", string(b))
 	}
-
 }

util/http/trie.go

@@ -0,0 +1,239 @@
+package http
+
+import (
+	"regexp"
+	"strings"
+	"sync"
+)
+
+// TrieOptions contains search options
+type TrieOptions struct {
+	IgnoreCase bool
+}
+
+// TrieOption func signature
+type TrieOption func(*TrieOptions)
+
+// IgnoreCase says that search must be case insensitive
+func IgnoreCase(b bool) TrieOption {
+	return func(o *TrieOptions) {
+		o.IgnoreCase = b
+	}
+}
+
+// Tree is a trie tree.
+type Trie struct {
+	node   *node
+	rcache map[string]*regexp.Regexp
+	rmu    sync.RWMutex
+}
+
+// node is a node of tree
+type node struct {
+	actions  map[string]interface{} // key is method, val is handler interface
+	children map[string]*node       // key is label of next nodes
+	label    string
+}
+
+const (
+	pathRoot          string = "/"
+	pathDelimiter     string = "/"
+	paramDelimiter    string = ":"
+	leftPtnDelimiter  string = "{"
+	rightPtnDelimiter string = "}"
+	ptnWildcard       string = "(.+)"
+)
+
+// NewTree creates a new trie tree.
+func NewTrie() *Trie {
+	return &Trie{
+		node: &node{
+			label:    pathRoot,
+			actions:  make(map[string]interface{}),
+			children: make(map[string]*node),
+		},
+		rcache: make(map[string]*regexp.Regexp),
+	}
+}
+
+// Insert inserts a route definition to tree.
+func (t *Trie) Insert(methods []string, path string, handler interface{}) {
+	curNode := t.node
+	if path == pathRoot {
+		curNode.label = path
+		for _, method := range methods {
+			curNode.actions[method] = handler
+		}
+		return
+	}
+	ep := splitPath(path)
+	for i, p := range ep {
+		nextNode, ok := curNode.children[p]
+		if ok {
+			curNode = nextNode
+		}
+		// Create a new node.
+		if !ok {
+			curNode.children[p] = &node{
+				label:    p,
+				actions:  make(map[string]interface{}),
+				children: make(map[string]*node),
+			}
+			curNode = curNode.children[p]
+		}
+		// last loop.
+		// If there is already registered data, overwrite it.
+		if i == len(ep)-1 {
+			curNode.label = p
+			for _, method := range methods {
+				curNode.actions[method] = handler
+			}
+			break
+		}
+	}
+}
+
+// Search searches a path from a tree.
+func (t *Trie) Search(method string, path string, opts ...TrieOption) (interface{}, map[string]string, bool) {
+	params := make(map[string]string)
+
+	options := TrieOptions{}
+	for _, o := range opts {
+		o(&options)
+	}
+
+	curNode := t.node
+
+nodeLoop:
+	for _, p := range splitPath(path) {
+		nextNode, ok := curNode.children[p]
+		if ok {
+			curNode = nextNode
+			continue nodeLoop
+		}
+		if options.IgnoreCase {
+			// additional loop for case insensitive matching
+			for k, v := range curNode.children {
+				if literalEqual(k, p, true) {
+					curNode = v
+					continue nodeLoop
+				}
+			}
+		}
+		if len(curNode.children) == 0 {
+			if !literalEqual(curNode.label, p, options.IgnoreCase) {
+				// no matching path was found
+				return nil, nil, false
+			}
+			break
+		}
+		isParamMatch := false
+		for c := range curNode.children {
+			if string([]rune(c)[0]) == leftPtnDelimiter {
+				ptn := getPattern(c)
+				t.rmu.RLock()
+				reg, ok := t.rcache[ptn]
+				t.rmu.RUnlock()
+				if !ok {
+					var err error
+					reg, err = regexp.Compile(ptn)
+					if err != nil {
+						return nil, nil, false
+					}
+					t.rmu.Lock()
+					t.rcache[ptn] = reg
+					t.rmu.Unlock()
+				}
+				if reg.Match([]byte(p)) {
+					pn := getParamName(c)
+					params[pn] = p
+					curNode = curNode.children[c]
+					isParamMatch = true
+					break
+				}
+				// no matching param was found.
+				return nil, nil, false
+			}
+		}
+		if !isParamMatch {
+			return nil, nil, false
+		}
+	}
+	if path == pathRoot {
+		if len(curNode.actions) == 0 {
+			return nil, nil, false
+		}
+	}
+
+	handler, ok := curNode.actions[method]
+	if !ok || handler == nil {
+		return nil, nil, false
+	}
+	return handler, params, true
+}
+
+// getPattern gets a pattern from a label
+// {id:[^\d+$]} -> ^\d+$
+// {id}         -> (.+)
+func getPattern(label string) string {
+	leftI := strings.Index(label, leftPtnDelimiter)
+	rightI := strings.Index(label, paramDelimiter)
+	// if label doesn't have any pattern, return wild card pattern as default.
+	if leftI == -1 || rightI == -1 {
+		return ptnWildcard
+	}
+	return label[rightI+1 : len(label)-1]
+}
+
+// getParamName gets a parameter from a label
+// {id:[^\d+$]} -> id
+// {id}         -> id
+func getParamName(label string) string {
+	leftI := strings.Index(label, leftPtnDelimiter)
+	rightI := func(l string) int {
+		r := []rune(l)
+
+		var n int
+
+	loop:
+		for i := 0; i < len(r); i++ {
+			n = i
+			switch string(r[i]) {
+			case paramDelimiter:
+				n = i
+				break loop
+			case rightPtnDelimiter:
+				n = i
+				break loop
+			}
+
+			if i == len(r)-1 {
+				n = i + 1
+				break loop
+			}
+		}
+
+		return n
+	}(label)
+
+	return label[leftI+1 : rightI]
+}
+
+// splitPath removes an empty value in slice.
+func splitPath(path string) []string {
+	s := strings.Split(path, pathDelimiter)
+	var r []string
+	for _, str := range s {
+		if str != "" {
+			r = append(r, str)
+		}
+	}
+	return r
+}
+
+func literalEqual(component, literal string, ignoreCase bool) bool {
+	if ignoreCase {
+		return strings.EqualFold(component, literal)
+	}
+	return component == literal
+}

util/http/trie_test.go

@@ -0,0 +1,95 @@
+package http
+
+import (
+	"net/http"
+	"testing"
+)
+
+func TestTrieIgnoreCase(t *testing.T) {
+	type handler struct {
+		name string
+	}
+	tr := NewTrie()
+	tr.Insert([]string{http.MethodPut}, "/v1/create/{id}", &handler{name: "test"})
+
+	_, _, ok := tr.Search(http.MethodPut, "/v1/CREATE/12", IgnoreCase(true))
+	if !ok {
+		t.Fatalf("unexpected error")
+	}
+}
+
+func TestTrieContentType(t *testing.T) {
+	type handler struct {
+		name string
+	}
+	tr := NewTrie()
+	tr.Insert([]string{"application/json"}, "/v1/create/{id}", &handler{name: "test"})
+
+	h, _, ok := tr.Search("application/json", "/v1/create/12")
+	if !ok {
+		t.Fatalf("must be found error")
+	}
+	if h.(*handler).name != "test" {
+		t.Fatalf("invalid handler %v", h)
+	}
+	_, _, ok = tr.Search("text/xml", "/v1/create/12")
+	if ok {
+		t.Fatalf("must be not found error")
+	}
+}
+
+func TestTrieNoMatchMethod(t *testing.T) {
+	tr := NewTrie()
+	tr.Insert([]string{http.MethodPut}, "/v1/create/{id}", nil)
+
+	_, _, ok := tr.Search(http.MethodPost, "/v1/create")
+	if ok {
+		t.Fatalf("must be not found error")
+	}
+}
+
+func TestTrieMatchRegexp(t *testing.T) {
+	type handler struct{}
+	tr := NewTrie()
+	tr.Insert([]string{http.MethodPut}, "/v1/create/{category}/{id:[0-9]+}", &handler{})
+
+	_, params, ok := tr.Search(http.MethodPut, "/v1/create/test_cat/12345")
+	switch {
+	case !ok:
+		t.Fatalf("route not found")
+	case len(params) != 2:
+		t.Fatalf("param matching error %v", params)
+	case params["category"] != "test_cat":
+		t.Fatalf("param matching error %v", params)
+	}
+}
+
+func TestTrieMatchRegexpFail(t *testing.T) {
+	type handler struct{}
+	tr := NewTrie()
+	tr.Insert([]string{http.MethodPut}, "/v1/create/{id:[a-z]+}", &handler{})
+
+	_, _, ok := tr.Search(http.MethodPut, "/v1/create/12345")
+	if ok {
+		t.Fatalf("route must not be not found")
+	}
+}
+
+func TestTrieMatchLongest(t *testing.T) {
+	type handler struct {
+		name string
+	}
+	tr := NewTrie()
+	tr.Insert([]string{http.MethodPut}, "/v1/create", &handler{name: "first"})
+	tr.Insert([]string{http.MethodPut}, "/v1/create/{id:[0-9]+}", &handler{name: "second"})
+	if h, _, ok := tr.Search(http.MethodPut, "/v1/create/12345"); !ok {
+		t.Fatalf("route must be found")
+	} else if h.(*handler).name != "second" {
+		t.Fatalf("invalid handler found: %s != %s", h.(*handler).name, "second")
+	}
+	if h, _, ok := tr.Search(http.MethodPut, "/v1/create"); !ok {
+		t.Fatalf("route must be found")
+	} else if h.(*handler).name != "first" {
+		t.Fatalf("invalid handler found: %s != %s", h.(*handler).name, "first")
+	}
+}

util/reflect/struct.go

@@ -12,16 +12,19 @@ import (
 // ErrInvalidParam specifies invalid url query params
 var ErrInvalidParam = errors.New("invalid url query param provided")
 
+// var timeKind = reflect.ValueOf(time.Time{}).Kind()
+
+// bracketSplitter
 var bracketSplitter = regexp.MustCompile(`\[|\]`)
 
-//var timeKind = reflect.ValueOf(time.Time{}).Kind()
-
+// StructField contains struct field path its value and field
 type StructField struct {
-	Field reflect.StructField
-	Value reflect.Value
 	Path  string
+	Value reflect.Value
+	Field reflect.StructField
 }
 
+// StructFieldByTag get struct field by tag key and its value
 func StructFieldByTag(src interface{}, tkey string, tval string) (interface{}, error) {
 	sv := reflect.ValueOf(src)
 	if sv.Kind() == reflect.Ptr {
@@ -66,6 +69,7 @@ func StructFieldByTag(src interface{}, tkey string, tval string) (interface{}, e
 	return nil, ErrNotFound
 }
 
+// StructFieldByPath get struct field by its path
 func StructFieldByPath(src interface{}, path string) (interface{}, error) {
 	var err error
 	for _, p := range strings.Split(path, ".") {
@@ -77,6 +81,7 @@ func StructFieldByPath(src interface{}, path string) (interface{}, error) {
 	return src, err
 }
 
+// StructFieldByName get struct field by its name
 func StructFieldByName(src interface{}, tkey string) (interface{}, error) {
 	sv := reflect.ValueOf(src)
 	if sv.Kind() == reflect.Ptr {
@@ -116,7 +121,7 @@ func StructFieldByName(src interface{}, tkey string) (interface{}, error) {
 	return nil, ErrNotFound
 }
 
-// StructFieldsMap returns map[string]interface{} or error
+// StructFieldsMap returns struct map[string]interface{} or error
 func StructFieldsMap(src interface{}) (map[string]interface{}, error) {
 	fields, err := StructFields(src)
 	if err != nil {
@@ -149,9 +154,9 @@ func StructFields(src interface{}) ([]StructField, error) {
 		}
 
 		switch val.Kind() {
-		//case timeKind:
-		//fmt.Printf("GGG\n")
-		//fields = append(fields, StructField{Field: fld, Value: val, Path: fld.Name})
+		// case timeKind:
+		// fmt.Printf("GGG\n")
+		// fields = append(fields, StructField{Field: fld, Value: val, Path: fld.Name})
 		case reflect.Struct:
 			infields, err := StructFields(val.Interface())
 			if err != nil {
@@ -207,6 +212,7 @@ func CopyFrom(a, b interface{}) {
 	}
 }
 
+// StructURLValues get struct fields via url.Values
 func StructURLValues(src interface{}, pref string, tags []string) (url.Values, error) {
 	data := url.Values{}
 

util/reflect/struct_test.go

@@ -1,10 +1,11 @@
-package reflect
+package reflect_test
 
 import (
 	"net/url"
 	"reflect"
-	rfl "reflect"
 	"testing"
+
+	rutil "github.com/unistack-org/micro/v3/util/reflect"
 )
 
 func TestStructFieldsMap(t *testing.T) {
@@ -19,7 +20,7 @@ func TestStructFieldsMap(t *testing.T) {
 	}
 
 	val := &Str{Name: []string{"first", "second"}, XXX: "ttt", Nested: NestedStr{BBB: "ddd", CCC: 9}}
-	fields, err := StructFieldsMap(val)
+	fields, err := rutil.StructFieldsMap(val)
 	if err != nil {
 		t.Fatal(err)
 	}
@@ -40,7 +41,7 @@ func TestStructFields(t *testing.T) {
 	}
 
 	val := &Str{Name: []string{"first", "second"}, XXX: "ttt", Nested: NestedStr{BBB: "ddd", CCC: 9}}
-	fields, err := StructFields(val)
+	fields, err := rutil.StructFields(val)
 	if err != nil {
 		t.Fatal(err)
 	}
@@ -67,11 +68,11 @@ func TestStructByPath(t *testing.T) {
 	}
 
 	val := &Str{Name: []string{"first", "second"}, XXX: "ttt", Nested: NestedStr{BBB: "ddd", CCC: 9}}
-	field, err := StructFieldByPath(val, "Nested.CCC")
+	field, err := rutil.StructFieldByPath(val, "Nested.CCC")
 	if err != nil {
 		t.Fatal(err)
 	}
-	if rfl.Indirect(reflect.ValueOf(field)).Int() != 9 {
+	if reflect.Indirect(reflect.ValueOf(field)).Int() != 9 {
 		t.Fatalf("invalid elem returned: %v", field)
 	}
 }
@@ -83,7 +84,7 @@ func TestStructByTag(t *testing.T) {
 
 	val := &Str{Name: []string{"first", "second"}}
 
-	iface, err := StructFieldByTag(val, "codec", "flatten")
+	iface, err := rutil.StructFieldByTag(val, "codec", "flatten")
 	if err != nil {
 		t.Fatal(err)
 	}
@@ -102,7 +103,7 @@ func TestStructByName(t *testing.T) {
 
 	val := &Str{Name: []string{"first", "second"}}
 
-	iface, err := StructFieldByName(val, "Name")
+	iface, err := rutil.StructFieldByName(val, "Name")
 	if err != nil {
 		t.Fatal(err)
 	}
@@ -122,7 +123,7 @@ func TestStructURLValues(t *testing.T) {
 	}
 
 	val := &Str{Name: "test_name", Args: []int{1, 2, 3}, Str: &Str{Name: "nested_name"}}
-	data, err := StructURLValues(val, "", []string{"json"})
+	data, err := rutil.StructURLValues(val, "", []string{"json"})
 	if err != nil {
 		t.Fatal(err)
 	}
@@ -138,7 +139,7 @@ func TestURLSliceVars(t *testing.T) {
 		t.Fatal(err)
 	}
 
-	mp, err := URLMap(u.RawQuery)
+	mp, err := rutil.URLMap(u.RawQuery)
 	if err != nil {
 		t.Fatal(err)
 	}
@@ -164,7 +165,7 @@ func TestURLVars(t *testing.T) {
 		t.Fatal(err)
 	}
 
-	mp, err := URLMap(u.RawQuery)
+	mp, err := rutil.URLMap(u.RawQuery)
 	if err != nil {
 		t.Fatal(err)
 	}
@@ -184,14 +185,14 @@ func TestIsZero(t *testing.T) {
 	}
 	testStr1.Nested.NestedName = "nested_name"
 
-	if ok := IsZero(testStr1); ok {
+	if ok := rutil.IsZero(testStr1); ok {
 		t.Fatalf("zero ret on non zero struct: %#+v", testStr1)
 	}
 
 	testStr1.Name = ""
 	testStr1.Value = ""
 	testStr1.Nested.NestedName = ""
-	if ok := IsZero(testStr1); !ok {
+	if ok := rutil.IsZero(testStr1); !ok {
 		t.Fatalf("non zero ret on zero struct: %#+v", testStr1)
 	}
 
@@ -206,12 +207,12 @@ func TestIsZero(t *testing.T) {
 		Name:   "test_name",
 		Nested: &testStr3{Nested: "nested_name"},
 	}
-	if ok := IsZero(vtest); ok {
+	if ok := rutil.IsZero(vtest); ok {
 		t.Fatalf("zero ret on non zero struct: %#+v", vtest)
 	}
 	vtest.Nested = nil
 	vtest.Name = ""
-	if ok := IsZero(vtest); !ok {
+	if ok := rutil.IsZero(vtest); !ok {
 		t.Fatalf("non zero ret on zero struct: %#+v", vtest)
 	}
 

util/router/LICENSE.txt

@@ -1,27 +0,0 @@
-Copyright (c) 2015, Gengo, Inc.
-All rights reserved.
-
-Redistribution and use in source and binary forms, with or without modification,
-are permitted provided that the following conditions are met:
-
-    * Redistributions of source code must retain the above copyright notice,
-      this list of conditions and the following disclaimer.
-
-    * Redistributions in binary form must reproduce the above copyright notice,
-      this list of conditions and the following disclaimer in the documentation
-      and/or other materials provided with the distribution.
-
-    * Neither the name of Gengo, Inc. nor the names of its
-      contributors may be used to endorse or promote products derived from this
-      software without specific prior written permission.
-
-THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
-ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
-WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
-DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR
-ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
-(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
-LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
-ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
-(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
-SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

util/router/compile.go

@@ -1,119 +0,0 @@
-package router
-
-// download from https://raw.githubusercontent.com/grpc-ecosystem/grpc-gateway/master/protoc-gen-grpc-gateway/httprule/compile.go
-
-const (
-	opcodeVersion = 1
-)
-
-// Template is a compiled representation of path templates.
-type Template struct {
-	// Version is the version number of the format.
-	Version int
-	// OpCodes is a sequence of operations.
-	OpCodes []int
-	// Pool is a constant pool
-	Pool []string
-	// Verb is a VERB part in the template.
-	Verb string
-	// Fields is a list of field paths bound in this template.
-	Fields []string
-	// Original template (example: /v1/a_bit_of_everything)
-	Template string
-}
-
-// Compiler compiles utilities representation of path templates into marshallable operations.
-// They can be unmarshalled by runtime.NewPattern.
-type Compiler interface {
-	Compile() Template
-}
-
-type op struct {
-	// code is the opcode of the operation
-	code OpCode
-
-	// str is a string operand of the code.
-	// num is ignored if str is not empty.
-	str string
-
-	// num is a numeric operand of the code.
-	num int
-}
-
-func (w wildcard) compile() []op {
-	return []op{
-		{code: OpPush},
-	}
-}
-
-func (w deepWildcard) compile() []op {
-	return []op{
-		{code: OpPushM},
-	}
-}
-
-func (l literal) compile() []op {
-	return []op{
-		{
-			code: OpLitPush,
-			str:  string(l),
-		},
-	}
-}
-
-func (v variable) compile() []op {
-	ops := make([]op, 0, len(v.segments))
-	for _, s := range v.segments {
-		ops = append(ops, s.compile()...)
-	}
-	ops = append(ops, op{
-		code: OpConcatN,
-		num:  len(v.segments),
-	}, op{
-		code: OpCapture,
-		str:  v.path,
-	})
-
-	return ops
-}
-
-func (t template) Compile() Template {
-	rawOps := make([]op, 0, len(t.segments))
-	for _, s := range t.segments {
-		rawOps = append(rawOps, s.compile()...)
-	}
-
-	var (
-		ops    []int
-		pool   []string
-		fields []string
-	)
-	consts := make(map[string]int)
-	for _, op := range rawOps {
-		ops = append(ops, int(op.code))
-		if op.str == "" {
-			ops = append(ops, op.num)
-		} else {
-			// eof segment literal represents the "/" path pattern
-			if op.str == eof {
-				op.str = ""
-			}
-			if _, ok := consts[op.str]; !ok {
-				consts[op.str] = len(pool)
-				pool = append(pool, op.str)
-			}
-			ops = append(ops, consts[op.str])
-		}
-		if op.code == OpCapture {
-			fields = append(fields, op.str)
-		}
-	}
-	return Template{
-		Version:  opcodeVersion,
-		OpCodes:  ops,
-		Pool:     pool,
-		Verb:     t.verb,
-		Fields:   fields,
-		Template: t.template,
-	}
-}

util/router/compile_test.go

@@ -1,129 +0,0 @@
-package router
-
-// download from https://raw.githubusercontent.com/grpc-ecosystem/grpc-gateway/master/protoc-gen-grpc-gateway/httprule/compile_test.go
-
-import (
-	"reflect"
-	"testing"
-)
-
-const (
-	operandFiller = 0
-)
-
-func TestCompile(t *testing.T) {
-	for _, spec := range []struct {
-		segs []segment
-		verb string
-
-		ops    []int
-		pool   []string
-		fields []string
-	}{
-		{},
-		{
-			segs: []segment{
-				literal(eof),
-			},
-			ops:  []int{int(OpLitPush), 0},
-			pool: []string{""},
-		},
-		{
-			segs: []segment{
-				wildcard{},
-			},
-			ops: []int{int(OpPush), operandFiller},
-		},
-		{
-			segs: []segment{
-				deepWildcard{},
-			},
-			ops: []int{int(OpPushM), operandFiller},
-		},
-		{
-			segs: []segment{
-				literal("v1"),
-			},
-			ops:  []int{int(OpLitPush), 0},
-			pool: []string{"v1"},
-		},
-		{
-			segs: []segment{
-				literal("v1"),
-			},
-			verb: "LOCK",
-			ops:  []int{int(OpLitPush), 0},
-			pool: []string{"v1"},
-		},
-		{
-			segs: []segment{
-				variable{
-					path: "name.nested",
-					segments: []segment{
-						wildcard{},
-					},
-				},
-			},
-			ops: []int{
-				int(OpPush), operandFiller,
-				int(OpConcatN), 1,
-				int(OpCapture), 0,
-			},
-			pool:   []string{"name.nested"},
-			fields: []string{"name.nested"},
-		},
-		{
-			segs: []segment{
-				literal("obj"),
-				variable{
-					path: "name.nested",
-					segments: []segment{
-						literal("a"),
-						wildcard{},
-						literal("b"),
-					},
-				},
-				variable{
-					path: "obj",
-					segments: []segment{
-						deepWildcard{},
-					},
-				},
-			},
-			ops: []int{
-				int(OpLitPush), 0,
-				int(OpLitPush), 1,
-				int(OpPush), operandFiller,
-				int(OpLitPush), 2,
-				int(OpConcatN), 3,
-				int(OpCapture), 3,
-				int(OpPushM), operandFiller,
-				int(OpConcatN), 1,
-				int(OpCapture), 0,
-			},
-			pool:   []string{"obj", "a", "b", "name.nested"},
-			fields: []string{"name.nested", "obj"},
-		},
-	} {
-		tmpl := template{
-			segments: spec.segs,
-			verb:     spec.verb,
-		}
-		compiled := tmpl.Compile()
-		if got, want := compiled.Version, opcodeVersion; got != want {
-			t.Errorf("tmpl.Compile().Version = %d; want %d; segs=%#v, verb=%q", got, want, spec.segs, spec.verb)
-		}
-		if got, want := compiled.OpCodes, spec.ops; !reflect.DeepEqual(got, want) {
-			t.Errorf("tmpl.Compile().OpCodes = %v; want %v; segs=%#v, verb=%q", got, want, spec.segs, spec.verb)
-		}
-		if got, want := compiled.Pool, spec.pool; !reflect.DeepEqual(got, want) {
-			t.Errorf("tmpl.Compile().Pool = %q; want %q; segs=%#v, verb=%q", got, want, spec.segs, spec.verb)
-		}
-		if got, want := compiled.Verb, spec.verb; got != want {
-			t.Errorf("tmpl.Compile().Verb = %q; want %q; segs=%#v, verb=%q", got, want, spec.segs, spec.verb)
-		}
-		if got, want := compiled.Fields, spec.fields; !reflect.DeepEqual(got, want) {
-			t.Errorf("tmpl.Compile().Fields = %q; want %q; segs=%#v, verb=%q", got, want, spec.segs, spec.verb)
-		}
-	}
-}

util/router/parse.go

@@ -1,371 +0,0 @@
-package router
-
-// download from https://raw.githubusercontent.com/grpc-ecosystem/grpc-gateway/master/protoc-gen-grpc-gateway/httprule/parse.go
-
-import (
-	"fmt"
-	"strings"
-)
-
-// InvalidTemplateError indicates that the path template is not valid.
-type InvalidTemplateError struct {
-	tmpl string
-	msg  string
-}
-
-func (e InvalidTemplateError) Error() string {
-	return fmt.Sprintf("%s: %s", e.msg, e.tmpl)
-}
-
-// Parse parses the string representation of path template
-func Parse(tmpl string) (Compiler, error) {
-	if !strings.HasPrefix(tmpl, "/") {
-		return template{}, InvalidTemplateError{tmpl: tmpl, msg: "no leading /"}
-	}
-	tokens, verb := tokenize(tmpl[1:])
-
-	p := parser{tokens: tokens}
-	segs, err := p.topLevelSegments()
-	if err != nil {
-		return template{}, InvalidTemplateError{tmpl: tmpl, msg: err.Error()}
-	}
-
-	return template{
-		segments: segs,
-		verb:     verb,
-		template: tmpl,
-	}, nil
-}
-
-func tokenize(path string) (tokens []string, verb string) {
-	if path == "" {
-		return []string{eof}, ""
-	}
-
-	const (
-		init = iota
-		field
-		nested
-	)
-	st := init
-	for path != "" {
-		var idx int
-		switch st {
-		case init:
-			idx = strings.IndexAny(path, "/{")
-		case field:
-			idx = strings.IndexAny(path, ".=}")
-		case nested:
-			idx = strings.IndexAny(path, "/}")
-		}
-		if idx < 0 {
-			tokens = append(tokens, path)
-			break
-		}
-		switch r := path[idx]; r {
-		case '/', '.':
-		case '{':
-			st = field
-		case '=':
-			st = nested
-		case '}':
-			st = init
-		}
-		if idx == 0 {
-			tokens = append(tokens, path[idx:idx+1])
-		} else {
-			tokens = append(tokens, path[:idx], path[idx:idx+1])
-		}
-		path = path[idx+1:]
-	}
-
-	l := len(tokens)
-	// See
-	// https://github.com/grpc-ecosystem/grpc-gateway/pull/1947#issuecomment-774523693 ;
-	// although normal and backwards-compat logic here is to use the last index
-	// of a colon, if the final segment is a variable followed by a colon, the
-	// part following the colon must be a verb. Hence if the previous token is
-	// an end var marker, we switch the index we're looking for to Index instead
-	// of LastIndex, so that we correctly grab the remaining part of the path as
-	// the verb.
-	var penultimateTokenIsEndVar bool
-	switch l {
-	case 0, 1:
-		// Not enough to be variable so skip this logic and don't result in an
-		// invalid index
-	default:
-		penultimateTokenIsEndVar = tokens[l-2] == "}"
-	}
-	t := tokens[l-1]
-	var idx int
-	if penultimateTokenIsEndVar {
-		idx = strings.Index(t, ":")
-	} else {
-		idx = strings.LastIndex(t, ":")
-	}
-	if idx == 0 {
-		tokens, verb = tokens[:l-1], t[1:]
-	} else if idx > 0 {
-		tokens[l-1], verb = t[:idx], t[idx+1:]
-	}
-	tokens = append(tokens, eof)
-	return tokens, verb
-}
-
-// parser is a parser of the template syntax defined in github.com/googleapis/googleapis/google/api/http.proto.
-type parser struct {
-	tokens   []string
-	accepted []string
-}
-
-// topLevelSegments is the target of this parser.
-func (p *parser) topLevelSegments() ([]segment, error) {
-	if _, err := p.accept(typeEOF); err == nil {
-		p.tokens = p.tokens[:0]
-		return []segment{literal(eof)}, nil
-	}
-	segs, err := p.segments()
-	if err != nil {
-		return nil, err
-	}
-	if _, err := p.accept(typeEOF); err != nil {
-		return nil, fmt.Errorf("unexpected token %q after segments %q", p.tokens[0], strings.Join(p.accepted, ""))
-	}
-	return segs, nil
-}
-
-func (p *parser) segments() ([]segment, error) {
-	s, err := p.segment()
-	if err != nil {
-		return nil, err
-	}
-
-	segs := []segment{s}
-	for {
-		if _, err := p.accept("/"); err != nil {
-			return segs, nil
-		}
-		s, err := p.segment()
-		if err != nil {
-			return segs, err
-		}
-		segs = append(segs, s)
-	}
-}
-
-func (p *parser) segment() (segment, error) {
-	if _, err := p.accept("*"); err == nil {
-		return wildcard{}, nil
-	}
-	if _, err := p.accept("**"); err == nil {
-		return deepWildcard{}, nil
-	}
-	if l, err := p.literal(); err == nil {
-		return l, nil
-	}
-
-	v, err := p.variable()
-	if err != nil {
-		return nil, fmt.Errorf("segment neither wildcards, literal or variable: %v", err)
-	}
-	return v, err
-}
-
-func (p *parser) literal() (segment, error) {
-	lit, err := p.accept(typeLiteral)
-	if err != nil {
-		return nil, err
-	}
-	return literal(lit), nil
-}
-
-func (p *parser) variable() (segment, error) {
-	if _, err := p.accept("{"); err != nil {
-		return nil, err
-	}
-
-	path, err := p.fieldPath()
-	if err != nil {
-		return nil, err
-	}
-
-	var segs []segment
-	if _, err := p.accept("="); err == nil {
-		segs, err = p.segments()
-		if err != nil {
-			return nil, fmt.Errorf("invalid segment in variable %q: %v", path, err)
-		}
-	} else {
-		segs = []segment{wildcard{}}
-	}
-
-	if _, err := p.accept("}"); err != nil {
-		return nil, fmt.Errorf("unterminated variable segment: %s", path)
-	}
-	return variable{
-		path:     path,
-		segments: segs,
-	}, nil
-}
-
-func (p *parser) fieldPath() (string, error) {
-	c, err := p.accept(typeIdent)
-	if err != nil {
-		return "", err
-	}
-	components := []string{c}
-	for {
-		if _, err = p.accept("."); err != nil {
-			return strings.Join(components, "."), nil
-		}
-		c, err := p.accept(typeIdent)
-		if err != nil {
-			return "", fmt.Errorf("invalid field path component: %v", err)
-		}
-		components = append(components, c)
-	}
-}
-
-// A termType is a type of terminal symbols.
-type termType string
-
-// These constants define some of valid values of termType.
-// They improve readability of parse functions.
-//
-// You can also use "/", "*", "**", "." or "=" as valid values.
-const (
-	typeIdent   = termType("ident")
-	typeLiteral = termType("literal")
-	typeEOF     = termType("$")
-)
-
-const (
-	// eof is the terminal symbol which always appears at the end of token sequence.
-	eof = "\u0000"
-)
-
-// accept tries to accept a token in "p".
-// This function consumes a token and returns it if it matches to the specified "term".
-// If it doesn't match, the function does not consume any tokens and return an error.
-func (p *parser) accept(term termType) (string, error) {
-	t := p.tokens[0]
-	switch term {
-	case "/", "*", "**", ".", "=", "{", "}":
-		if t != string(term) && t != "/" {
-			return "", fmt.Errorf("expected %q but got %q", term, t)
-		}
-	case typeEOF:
-		if t != eof {
-			return "", fmt.Errorf("expected EOF but got %q", t)
-		}
-	case typeIdent:
-		if err := expectIdent(t); err != nil {
-			return "", err
-		}
-	case typeLiteral:
-		if err := expectPChars(t); err != nil {
-			return "", err
-		}
-	default:
-		return "", fmt.Errorf("unknown termType %q", term)
-	}
-	p.tokens = p.tokens[1:]
-	p.accepted = append(p.accepted, t)
-	return t, nil
-}
-
-// expectPChars determines if "t" consists of only pchars defined in RFC3986.
-//
-// https://www.ietf.org/rfc/rfc3986.txt, P.49
-//   pchar         = unreserved / pct-encoded / sub-delims / ":" / "@"
-//   unreserved    = ALPHA / DIGIT / "-" / "." / "_" / "~"
-//   sub-delims    = "!" / "$" / "&" / "'" / "(" / ")"
-//                 / "*" / "+" / "," / ";" / "="
-//   pct-encoded   = "%" HEXDIG HEXDIG
-//nolint:gocyclo
-func expectPChars(t string) error {
-	const (
-		init = iota
-		pct1
-		pct2
-	)
-	st := init
-	for _, r := range t {
-		if st != init {
-			if !isHexDigit(r) {
-				return fmt.Errorf("invalid hexdigit: %c(%U)", r, r)
-			}
-			switch st {
-			case pct1:
-				st = pct2
-			case pct2:
-				st = init
-			}
-			continue
-		}
-
-		// unreserved
-		switch {
-		case 'A' <= r && r <= 'Z':
-			continue
-		case 'a' <= r && r <= 'z':
-			continue
-		case '0' <= r && r <= '9':
-			continue
-		}
-		switch r {
-		case '-', '.', '_', '~':
-			// unreserved
-		case '!', '$', '&', '\'', '(', ')', '*', '+', ',', ';', '=':
-			// sub-delims
-		case ':', '@':
-			// rest of pchar
-		case '%':
-			// pct-encoded
-			st = pct1
-		default:
-			return fmt.Errorf("invalid character in path segment: %q(%U)", r, r)
-		}
-	}
-	if st != init {
-		return fmt.Errorf("invalid percent-encoding in %q", t)
-	}
-	return nil
-}
-
-// expectIdent determines if "ident" is a valid identifier in .proto schema ([[:alpha:]_][[:alphanum:]_]*).
-func expectIdent(ident string) error {
-	if ident == "" {
-		return fmt.Errorf("empty identifier")
-	}
-	for pos, r := range ident {
-		switch {
-		case '0' <= r && r <= '9':
-			if pos == 0 {
-				return fmt.Errorf("identifier starting with digit: %s", ident)
-			}
-			continue
-		case 'A' <= r && r <= 'Z':
-			continue
-		case 'a' <= r && r <= 'z':
-			continue
-		case r == '_':
-			continue
-		default:
-			return fmt.Errorf("invalid character %q(%U) in identifier: %s", r, r, ident)
-		}
-	}
-	return nil
-}
-
-func isHexDigit(r rune) bool {
-	switch {
-	case '0' <= r && r <= '9':
-		return true
-	case 'A' <= r && r <= 'F':
-		return true
-	case 'a' <= r && r <= 'f':
-		return true
-	}
-	return false
-}

util/router/parse_test.go

@@ -1,360 +0,0 @@
-package router
-
-// download from https://raw.githubusercontent.com/grpc-ecosystem/grpc-gateway/master/protoc-gen-grpc-gateway/httprule/parse_test.go
-
-import (
-	"context"
-	"fmt"
-	"reflect"
-	"testing"
-
-	"github.com/unistack-org/micro/v3/logger"
-)
-
-func TestTokenize(t *testing.T) {
-	for _, spec := range []struct {
-		src    string
-		tokens []string
-		verb   string
-	}{
-		{
-			src:    "",
-			tokens: []string{eof},
-		},
-		{
-			src:    "v1",
-			tokens: []string{"v1", eof},
-		},
-		{
-			src:    "v1/b",
-			tokens: []string{"v1", "/", "b", eof},
-		},
-		{
-			src:    "v1/endpoint/*",
-			tokens: []string{"v1", "/", "endpoint", "/", "*", eof},
-		},
-		{
-			src:    "v1/endpoint/**",
-			tokens: []string{"v1", "/", "endpoint", "/", "**", eof},
-		},
-		{
-			src: "v1/b/{bucket_name=*}",
-			tokens: []string{
-				"v1", "/",
-				"b", "/",
-				"{", "bucket_name", "=", "*", "}",
-				eof,
-			},
-		},
-		{
-			src: "v1/b/{bucket_name=buckets/*}",
-			tokens: []string{
-				"v1", "/",
-				"b", "/",
-				"{", "bucket_name", "=", "buckets", "/", "*", "}",
-				eof,
-			},
-		},
-		{
-			src: "v1/b/{bucket_name=buckets/*}/o",
-			tokens: []string{
-				"v1", "/",
-				"b", "/",
-				"{", "bucket_name", "=", "buckets", "/", "*", "}", "/",
-				"o",
-				eof,
-			},
-		},
-		{
-			src: "v1/b/{bucket_name=buckets/*}/o/{name}",
-			tokens: []string{
-				"v1", "/",
-				"b", "/",
-				"{", "bucket_name", "=", "buckets", "/", "*", "}", "/",
-				"o", "/", "{", "name", "}",
-				eof,
-			},
-		},
-		{
-			src: "v1/a=b&c=d;e=f:g/endpoint.rdf",
-			tokens: []string{
-				"v1", "/",
-				"a=b&c=d;e=f:g", "/",
-				"endpoint.rdf",
-				eof,
-			},
-		},
-		{
-			src: "v1/a/{endpoint}:a",
-			tokens: []string{
-				"v1", "/",
-				"a", "/",
-				"{", "endpoint", "}",
-				eof,
-			},
-			verb: "a",
-		},
-		{
-			src: "v1/a/{endpoint}:b:c",
-			tokens: []string{
-				"v1", "/",
-				"a", "/",
-				"{", "endpoint", "}",
-				eof,
-			},
-			verb: "b:c",
-		},
-	} {
-		tokens, verb := tokenize(spec.src)
-		if got, want := tokens, spec.tokens; !reflect.DeepEqual(got, want) {
-			t.Errorf("tokenize(%q) = %q, _; want %q, _", spec.src, got, want)
-		}
-
-		switch {
-		case spec.verb != "":
-			if got, want := verb, spec.verb; !reflect.DeepEqual(got, want) {
-				t.Errorf("tokenize(%q) = %q, _; want %q, _", spec.src, got, want)
-			}
-
-		default:
-			if got, want := verb, ""; got != want {
-				t.Errorf("tokenize(%q) = _, %q; want _, %q", spec.src, got, want)
-			}
-
-			src := fmt.Sprintf("%s:%s", spec.src, "LOCK")
-			tokens, verb = tokenize(src)
-			if got, want := tokens, spec.tokens; !reflect.DeepEqual(got, want) {
-				t.Errorf("tokenize(%q) = %q, _; want %q, _", src, got, want)
-			}
-			if got, want := verb, "LOCK"; got != want {
-				t.Errorf("tokenize(%q) = _, %q; want _, %q", src, got, want)
-			}
-		}
-	}
-}
-
-func TestParseSegments(t *testing.T) {
-	for _, spec := range []struct {
-		tokens []string
-		want   []segment
-	}{
-		{
-			tokens: []string{eof},
-			want: []segment{
-				literal(eof),
-			},
-		},
-		{
-			// Note: this case will never arise as tokenize() will never return such a sequence of tokens
-			// and even if it does it will be treated as [eof]
-			tokens: []string{eof, "v1", eof},
-			want: []segment{
-				literal(eof),
-			},
-		},
-		{
-			tokens: []string{"v1", eof},
-			want: []segment{
-				literal("v1"),
-			},
-		},
-		{
-			tokens: []string{"/", eof},
-			want: []segment{
-				wildcard{},
-			},
-		},
-		{
-			tokens: []string{"-._~!$&'()*+,;=:@", eof},
-			want: []segment{
-				literal("-._~!$&'()*+,;=:@"),
-			},
-		},
-		{
-			tokens: []string{"%e7%ac%ac%e4%b8%80%e7%89%88", eof},
-			want: []segment{
-				literal("%e7%ac%ac%e4%b8%80%e7%89%88"),
-			},
-		},
-		{
-			tokens: []string{"v1", "/", "*", eof},
-			want: []segment{
-				literal("v1"),
-				wildcard{},
-			},
-		},
-		{
-			tokens: []string{"v1", "/", "**", eof},
-			want: []segment{
-				literal("v1"),
-				deepWildcard{},
-			},
-		},
-		{
-			tokens: []string{"{", "name", "}", eof},
-			want: []segment{
-				variable{
-					path: "name",
-					segments: []segment{
-						wildcard{},
-					},
-				},
-			},
-		},
-		{
-			tokens: []string{"{", "name", "=", "*", "}", eof},
-			want: []segment{
-				variable{
-					path: "name",
-					segments: []segment{
-						wildcard{},
-					},
-				},
-			},
-		},
-		{
-			tokens: []string{"{", "field", ".", "nested", ".", "nested2", "=", "*", "}", eof},
-			want: []segment{
-				variable{
-					path: "field.nested.nested2",
-					segments: []segment{
-						wildcard{},
-					},
-				},
-			},
-		},
-		{
-			tokens: []string{"{", "name", "=", "a", "/", "b", "/", "*", "}", eof},
-			want: []segment{
-				variable{
-					path: "name",
-					segments: []segment{
-						literal("a"),
-						literal("b"),
-						wildcard{},
-					},
-				},
-			},
-		},
-		{
-			tokens: []string{
-				"v1", "/",
-				"{",
-				"name", ".", "nested", ".", "nested2",
-				"=",
-				"a", "/", "b", "/", "*",
-				"}", "/",
-				"o", "/",
-				"{",
-				"another_name",
-				"=",
-				"a", "/", "b", "/", "*", "/", "c",
-				"}", "/",
-				"**",
-				eof,
-			},
-			want: []segment{
-				literal("v1"),
-				variable{
-					path: "name.nested.nested2",
-					segments: []segment{
-						literal("a"),
-						literal("b"),
-						wildcard{},
-					},
-				},
-				literal("o"),
-				variable{
-					path: "another_name",
-					segments: []segment{
-						literal("a"),
-						literal("b"),
-						wildcard{},
-						literal("c"),
-					},
-				},
-				deepWildcard{},
-			},
-		},
-	} {
-		p := parser{tokens: spec.tokens}
-		segs, err := p.topLevelSegments()
-		if err != nil {
-			t.Errorf("parser{%q}.segments() failed with %v; want success", spec.tokens, err)
-			continue
-		}
-		if got, want := segs, spec.want; !reflect.DeepEqual(got, want) {
-			t.Errorf("parser{%q}.segments() = %#v; want %#v", spec.tokens, got, want)
-		}
-		if got := p.tokens; len(got) > 0 {
-			t.Errorf("p.tokens = %q; want []; spec.tokens=%q", got, spec.tokens)
-		}
-	}
-}
-
-func TestParseSegmentsWithErrors(t *testing.T) {
-	for _, spec := range []struct {
-		tokens []string
-	}{
-		{
-			// double slash
-			tokens: []string{"//", eof},
-		},
-		{
-			// invalid literal
-			tokens: []string{"a?b", eof},
-		},
-		{
-			// invalid percent-encoding
-			tokens: []string{"%", eof},
-		},
-		{
-			// invalid percent-encoding
-			tokens: []string{"%2", eof},
-		},
-		{
-			// invalid percent-encoding
-			tokens: []string{"a%2z", eof},
-		},
-		{
-			// unterminated variable
-			tokens: []string{"{", "name", eof},
-		},
-		{
-			// unterminated variable
-			tokens: []string{"{", "name", "=", eof},
-		},
-		{
-			// unterminated variable
-			tokens: []string{"{", "name", "=", "*", eof},
-		},
-		{
-			// empty component in field path
-			tokens: []string{"{", "name", ".", "}", eof},
-		},
-		{
-			// empty component in field path
-			tokens: []string{"{", "name", ".", ".", "nested", "}", eof},
-		},
-		{
-			// invalid character in identifier
-			tokens: []string{"{", "field-name", "}", eof},
-		},
-		{
-			// no slash between segments
-			tokens: []string{"v1", "endpoint", eof},
-		},
-		{
-			// no slash between segments
-			tokens: []string{"v1", "{", "name", "}", eof},
-		},
-	} {
-		p := parser{tokens: spec.tokens}
-		segs, err := p.topLevelSegments()
-		if err == nil {
-			t.Errorf("parser{%q}.segments() succeeded; want InvalidTemplateError; accepted %#v", spec.tokens, segs)
-			continue
-		}
-		logger.Info(context.TODO(), err.Error())
-	}
-}

util/router/pattern.go

@@ -1,24 +0,0 @@
-package router
-
-// download from https://raw.githubusercontent.com/grpc-ecosystem/grpc-gateway/master/utilities/pattern.go
-
-// An OpCode is a opcode of compiled path patterns.
-type OpCode int
-
-// These constants are the valid values of OpCode.
-const (
-	// OpNop does nothing
-	OpNop = OpCode(iota)
-	// OpPush pushes a component to stack
-	OpPush
-	// OpLitPush pushes a component to stack if it matches to the literal
-	OpLitPush
-	// OpPushM concatenates the remaining components and pushes it to stack
-	OpPushM
-	// OpConcatN pops N items from stack, concatenates them and pushes it back to stack
-	OpConcatN
-	// OpCapture pops an item and binds it to the variable
-	OpCapture
-	// OpEnd is the least positive invalid opcode.
-	OpEnd
-)

util/router/router.go

@@ -1,32 +0,0 @@
-package router
-
-import (
-	"github.com/unistack-org/micro/v3/register"
-	"github.com/unistack-org/micro/v3/router"
-)
-
-type apiRouter struct {
-	router.Router
-	routes []router.Route
-}
-
-func (r *apiRouter) Lookup(...router.QueryOption) ([]router.Route, error) {
-	return r.routes, nil
-}
-
-func (r *apiRouter) String() string {
-	return "api"
-}
-
-// New router is a hack for API routing
-func New(srvs []*register.Service) router.Router {
-	var routes []router.Route
-
-	for _, srv := range srvs {
-		for _, n := range srv.Nodes {
-			routes = append(routes, router.Route{Address: n.Address, Metadata: n.Metadata})
-		}
-	}
-
-	return &apiRouter{routes: routes}
-}

util/router/runtime.go

@@ -1,259 +0,0 @@
-package router
-
-// download from https://raw.githubusercontent.com/grpc-ecosystem/grpc-gateway/master/runtime/pattern.go
-
-import (
-	"context"
-	"errors"
-	"fmt"
-	"strings"
-
-	"github.com/unistack-org/micro/v3/logger"
-)
-
-var (
-	// ErrNotMatch indicates that the given HTTP request path does not match to the pattern.
-	ErrNotMatch = errors.New("not match to the path pattern")
-	// ErrInvalidPattern indicates that the given definition of Pattern is not valid.
-	ErrInvalidPattern = errors.New("invalid pattern")
-)
-
-type rop struct {
-	code    OpCode
-	operand int
-}
-
-// Pattern is a template pattern of http request paths defined in
-// https://github.com/googleapis/googleapis/blob/master/google/api/http.proto
-type Pattern struct {
-	// ops is a list of operations
-	ops []rop
-	// pool is a constant pool indexed by the operands or vars
-	pool []string
-	// vars is a list of variables names to be bound by this pattern
-	vars []string
-	// stacksize is the max depth of the stack
-	stacksize int
-	// tailLen is the length of the fixed-size segments after a deep wildcard
-	tailLen int
-	// verb is the VERB part of the path pattern. It is empty if the pattern does not have VERB part.
-	verb string
-}
-
-// NewPattern returns a new Pattern from the given definition values.
-// "ops" is a sequence of op codes. "pool" is a constant pool.
-// "verb" is the verb part of the pattern. It is empty if the pattern does not have the part.
-// "version" must be 1 for now.
-// It returns an error if the given definition is invalid.
-func NewPattern(version int, ops []int, pool []string, verb string) (Pattern, error) {
-	if version != 1 {
-		if logger.V(logger.TraceLevel) {
-			logger.Trace(context.TODO(), "unsupported version: %d", version)
-		}
-		return Pattern{}, ErrInvalidPattern
-	}
-
-	l := len(ops)
-	if l%2 != 0 {
-		if logger.V(logger.TraceLevel) {
-			logger.Trace(context.TODO(), "odd number of ops codes: %d", l)
-		}
-		return Pattern{}, ErrInvalidPattern
-	}
-
-	var (
-		typedOps        []rop
-		stack, maxstack int
-		tailLen         int
-		pushMSeen       bool
-		vars            []string
-	)
-	for i := 0; i < l; i += 2 {
-		op := rop{code: OpCode(ops[i]), operand: ops[i+1]}
-		switch op.code {
-		case OpNop:
-			continue
-		case OpPush:
-			if pushMSeen {
-				tailLen++
-			}
-			stack++
-		case OpPushM:
-			if pushMSeen {
-				if logger.V(logger.TraceLevel) {
-					logger.Trace(context.TODO(), "pushM appears twice")
-				}
-				return Pattern{}, ErrInvalidPattern
-			}
-			pushMSeen = true
-			stack++
-		case OpLitPush:
-			if op.operand < 0 || len(pool) <= op.operand {
-				if logger.V(logger.TraceLevel) {
-					logger.Trace(context.TODO(), "negative literal index: %d", op.operand)
-				}
-				return Pattern{}, ErrInvalidPattern
-			}
-			if pushMSeen {
-				tailLen++
-			}
-			stack++
-		case OpConcatN:
-			if op.operand <= 0 {
-				if logger.V(logger.TraceLevel) {
-					logger.Trace(context.TODO(), "negative concat size: %d", op.operand)
-				}
-				return Pattern{}, ErrInvalidPattern
-			}
-			stack -= op.operand
-			if stack < 0 {
-				if logger.V(logger.TraceLevel) {
-					logger.Trace(context.TODO(), "stack underflow")
-				}
-				return Pattern{}, ErrInvalidPattern
-			}
-			stack++
-		case OpCapture:
-			if op.operand < 0 || len(pool) <= op.operand {
-				if logger.V(logger.TraceLevel) {
-					logger.Trace(context.TODO(), "variable name index out of bound: %d", op.operand)
-				}
-				return Pattern{}, ErrInvalidPattern
-			}
-			v := pool[op.operand]
-			op.operand = len(vars)
-			vars = append(vars, v)
-			stack--
-			if stack < 0 {
-				if logger.V(logger.TraceLevel) {
-					logger.Trace(context.TODO(), "stack underflow")
-				}
-				return Pattern{}, ErrInvalidPattern
-			}
-		default:
-			if logger.V(logger.TraceLevel) {
-				logger.Trace(context.TODO(), "invalid opcode: %d", op.code)
-			}
-			return Pattern{}, ErrInvalidPattern
-		}
-
-		if maxstack < stack {
-			maxstack = stack
-		}
-		typedOps = append(typedOps, op)
-	}
-	return Pattern{
-		ops:       typedOps,
-		pool:      pool,
-		vars:      vars,
-		stacksize: maxstack,
-		tailLen:   tailLen,
-		verb:      verb,
-	}, nil
-}
-
-// MustPattern is a helper function which makes it easier to call NewPattern in variable initialization.
-func MustPattern(p Pattern, err error) Pattern {
-	if err != nil {
-		if logger.V(logger.FatalLevel) {
-			logger.Fatal(context.TODO(), "Pattern initialization failed: %v", err)
-		}
-	}
-	return p
-}
-
-// Match examines components if it matches to the Pattern.
-// If it matches, the function returns a mapping from field paths to their captured values.
-// If otherwise, the function returns an error.
-//nolint:gocyclo
-func (p Pattern) Match(components []string, verb string) (map[string]string, error) {
-	if p.verb != verb {
-		if p.verb != "" {
-			return nil, ErrNotMatch
-		}
-		if len(components) == 0 {
-			components = []string{":" + verb}
-		} else {
-			components = append([]string{}, components...)
-			components[len(components)-1] += ":" + verb
-		}
-	}
-
-	var pos int
-	stack := make([]string, 0, p.stacksize)
-	captured := make([]string, len(p.vars))
-	l := len(components)
-	for _, op := range p.ops {
-		switch op.code {
-		case OpNop:
-			continue
-		case OpPush, OpLitPush:
-			if pos >= l {
-				return nil, ErrNotMatch
-			}
-			c := components[pos]
-			if op.code == OpLitPush {
-				if lit := p.pool[op.operand]; c != lit {
-					return nil, ErrNotMatch
-				}
-			}
-			stack = append(stack, c)
-			pos++
-		case OpPushM:
-			end := len(components)
-			if end < pos+p.tailLen {
-				return nil, ErrNotMatch
-			}
-			end -= p.tailLen
-			stack = append(stack, strings.Join(components[pos:end], "/"))
-			pos = end
-		case OpConcatN:
-			n := op.operand
-			l := len(stack) - n
-			stack = append(stack[:l], strings.Join(stack[l:], "/"))
-		case OpCapture:
-			n := len(stack) - 1
-			captured[op.operand] = stack[n]
-			stack = stack[:n]
-		}
-	}
-	if pos < l {
-		return nil, ErrNotMatch
-	}
-	bindings := make(map[string]string, len(captured))
-	for i, val := range captured {
-		bindings[p.vars[i]] = val
-	}
-	return bindings, nil
-}
-
-// Verb returns the verb part of the Pattern.
-func (p Pattern) Verb() string { return p.verb }
-
-func (p Pattern) String() string {
-	var stack []string
-	for _, op := range p.ops {
-		switch op.code {
-		case OpNop:
-			continue
-		case OpPush:
-			stack = append(stack, "*")
-		case OpLitPush:
-			stack = append(stack, p.pool[op.operand])
-		case OpPushM:
-			stack = append(stack, "**")
-		case OpConcatN:
-			n := op.operand
-			l := len(stack) - n
-			stack = append(stack[:l], strings.Join(stack[l:], "/"))
-		case OpCapture:
-			n := len(stack) - 1
-			stack[n] = fmt.Sprintf("{%s=%s}", p.vars[op.operand], stack[n])
-		}
-	}
-	segs := strings.Join(stack, "/")
-	if p.verb != "" {
-		return fmt.Sprintf("/%s:%s", segs, p.verb)
-	}
-	return "/" + segs
-}

util/router/types.go

@@ -1,62 +0,0 @@
-package router
-
-// download from https://raw.githubusercontent.com/grpc-ecosystem/grpc-gateway/master/protoc-gen-grpc-gateway/httprule/types.go
-
-import (
-	"fmt"
-	"strings"
-)
-
-type template struct {
-	segments []segment
-	verb     string
-	template string
-}
-
-type segment interface {
-	fmt.Stringer
-	compile() (ops []op)
-}
-
-type wildcard struct{}
-
-type deepWildcard struct{}
-
-type literal string
-
-type variable struct {
-	path     string
-	segments []segment
-}
-
-func (wildcard) String() string {
-	return "*"
-}
-
-func (deepWildcard) String() string {
-	return "**"
-}
-
-func (l literal) String() string {
-	return string(l)
-}
-
-func (v variable) String() string {
-	segs := make([]string, 0, len(v.segments))
-	for _, s := range v.segments {
-		segs = append(segs, s.String())
-	}
-	return fmt.Sprintf("{%s=%s}", v.path, strings.Join(segs, "/"))
-}
-
-func (t template) String() string {
-	segs := make([]string, 0, len(t.segments))
-	for _, s := range t.segments {
-		segs = append(segs, s.String())
-	}
-	str := strings.Join(segs, "/")
-	if t.verb != "" {
-		str = fmt.Sprintf("%s:%s", str, t.verb)
-	}
-	return "/" + str
-}

util/router/types_test.go

@@ -1,93 +0,0 @@
-package router
-
-// download from https://raw.githubusercontent.com/grpc-ecosystem/grpc-gateway/master/protoc-gen-grpc-gateway/httprule/types_test.go
-
-import (
-	"fmt"
-	"testing"
-)
-
-func TestTemplateStringer(t *testing.T) {
-	for _, spec := range []struct {
-		segs []segment
-		want string
-	}{
-		{
-			segs: []segment{
-				literal("v1"),
-			},
-			want: "/v1",
-		},
-		{
-			segs: []segment{
-				wildcard{},
-			},
-			want: "/*",
-		},
-		{
-			segs: []segment{
-				deepWildcard{},
-			},
-			want: "/**",
-		},
-		{
-			segs: []segment{
-				variable{
-					path: "name",
-					segments: []segment{
-						literal("a"),
-					},
-				},
-			},
-			want: "/{name=a}",
-		},
-		{
-			segs: []segment{
-				variable{
-					path: "name",
-					segments: []segment{
-						literal("a"),
-						wildcard{},
-						literal("b"),
-					},
-				},
-			},
-			want: "/{name=a/*/b}",
-		},
-		{
-			segs: []segment{
-				literal("v1"),
-				variable{
-					path: "name",
-					segments: []segment{
-						literal("a"),
-						wildcard{},
-						literal("b"),
-					},
-				},
-				literal("c"),
-				variable{
-					path: "field.nested",
-					segments: []segment{
-						wildcard{},
-						literal("d"),
-					},
-				},
-				wildcard{},
-				literal("e"),
-				deepWildcard{},
-			},
-			want: "/v1/{name=a/*/b}/c/{field.nested=*/d}/*/e/**",
-		},
-	} {
-		tmpl := template{segments: spec.segs}
-		if got, want := tmpl.String(), spec.want; got != want {
-			t.Errorf("%#v.String() = %q; want %q", tmpl, got, want)
-		}
-
-		tmpl.verb = "LOCK"
-		if got, want := tmpl.String(), fmt.Sprintf("%s:LOCK", spec.want); got != want {
-			t.Errorf("%#v.String() = %q; want %q", tmpl, got, want)
-		}
-	}
-}

util/token/basic/basic.go

@@ -45,10 +45,10 @@ func (b *Basic) Generate(acc *auth.Account, opts ...token.GenerateOption) (*toke
 
 	// write to the store
 	key, err := id.New()
-	if err !=nil {
+	if err != nil {
 		return nil, err
 	}
-	
+
 	err = b.store.Write(context.Background(), fmt.Sprintf("%v%v", StorePrefix, key), bytes, store.WriteTTL(options.Expiry))
 	if err != nil {
 		return nil, err

util/token/jwt/jwt.go

@@ -13,7 +13,7 @@ import (
 // authClaims to be encoded in the JWT
 type authClaims struct {
 	Metadata metadata.Metadata `json:"metadata"`
-	jwt.StandardClaims
+	jwt.RegisteredClaims
 	Type   string   `json:"type"`
 	Scopes []string `json:"scopes"`
 }
@@ -50,10 +50,10 @@ func (j *JWT) Generate(acc *auth.Account, opts ...token.GenerateOption) (*token.
 	// generate the JWT
 	expiry := time.Now().Add(options.Expiry)
 	t := jwt.NewWithClaims(jwt.SigningMethodRS256, authClaims{
-		Type: acc.Type, Scopes: acc.Scopes, Metadata: acc.Metadata, StandardClaims: jwt.StandardClaims{
+		Type: acc.Type, Scopes: acc.Scopes, Metadata: acc.Metadata, RegisteredClaims: jwt.RegisteredClaims{
 			Subject:   acc.ID,
 			Issuer:    acc.Issuer,
-			ExpiresAt: expiry.Unix(),
+			ExpiresAt: jwt.NewNumericDate(expiry),
 		},
 	})
 	tok, err := t.SignedString(key)