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tracer: tweaks for span tags and naming #239

Merged
vtolstov merged 2 commits from tracing into v3 2023-09-01 14:58:16 +03:00
Conversation 0 Commits 2 Files Changed 3 +123 -83
3 changed files with 123 additions and 83 deletions
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36
tracer/tracer.go
View File

@ -3,6 +3,8 @@ package tracer // import "go.unistack.org/micro/v3/tracer"
import ( import (
"context" "context"
"fmt"
"sort"
) )
// DefaultTracer is the global default tracer // DefaultTracer is the global default tracer
@ -42,3 +44,37 @@ type Span interface {
// Kind returns span kind // Kind returns span kind
Kind() SpanKind Kind() SpanKind
} }
// sort labels alphabeticaly by label name
type byKey []interface{}
func (k byKey) Len() int { return len(k) / 2 }
func (k byKey) Less(i, j int) bool { return fmt.Sprintf("%s", k[i*2]) < fmt.Sprintf("%s", k[j*2]) }
func (k byKey) Swap(i, j int) {
k[i*2], k[j*2] = k[j*2], k[i*2]
k[i*2+1], k[j*2+1] = k[j*2+1], k[i*2+1]
}
func UniqLabels(labels []interface{}) []interface{} {
if len(labels)%2 == 1 {
labels = labels[:len(labels)-1]
}
if len(labels) > 2 {
sort.Sort(byKey(labels))
idx := 0
for {
if labels[idx] == labels[idx+2] {
copy(labels[idx:], labels[idx+2:])
labels = labels[:len(labels)-2]
} else {
idx += 2
}
if idx+2 >= len(labels) {
break
}
}
}
return labels
}

13
tracer/tracer_test.go Normal file
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@ -0,0 +1,13 @@
package tracer
import (
"testing"
)
func TestUniqLabels(t *testing.T) {
labels := []interface{}{"key1", "val1", "key1", "val2"}
labels = UniqLabels(labels)
if labels[1] != "val2" {
t.Fatalf("UniqLabels not works")
}
}

157
tracer/wrapper/wrapper.go
View File

@ -4,6 +4,7 @@ package wrapper // import "go.unistack.org/micro/v3/tracer/wrapper"
import ( import (
"context" "context"
"fmt" "fmt"
"strings"
"go.unistack.org/micro/v3/client" "go.unistack.org/micro/v3/client"
"go.unistack.org/micro/v3/metadata" "go.unistack.org/micro/v3/metadata"
@ -11,13 +12,13 @@ import (
"go.unistack.org/micro/v3/tracer" "go.unistack.org/micro/v3/tracer"
) )
var DefaultHeadersExctract = []string{metadata.HeaderTopic, metadata.HeaderEndpoint, metadata.HeaderService, metadata.HeaderXRequestID} var DefaultHeadersExctract = []string{metadata.HeaderXRequestID}
func extractLabels(md metadata.Metadata) []string { func ExtractDefaultLabels(md metadata.Metadata) []interface{} {
labels := make([]string, 0, 5) labels := make([]interface{}, 0, len(DefaultHeadersExctract))
for _, k := range DefaultHeadersExctract { for _, k := range DefaultHeadersExctract {
if v, ok := md.Get(k); ok { if v, ok := md.Get(k); ok {
labels = append(labels, k, v) labels = append(labels, strings.ToLower(k), v)
} }
} }
return labels return labels
@ -25,10 +26,9 @@ func extractLabels(md metadata.Metadata) []string {
var ( var (
DefaultClientCallObserver = func(ctx context.Context, req client.Request, rsp interface{}, opts []client.CallOption, sp tracer.Span, err error) { DefaultClientCallObserver = func(ctx context.Context, req client.Request, rsp interface{}, opts []client.CallOption, sp tracer.Span, err error) {
sp.SetName(fmt.Sprintf("Call %s.%s", req.Service(), req.Method()))
var labels []interface{} var labels []interface{}
if md, ok := metadata.FromOutgoingContext(ctx); ok { if md, ok := metadata.FromOutgoingContext(ctx); ok {
labels = append(labels, extractLabels(md)) labels = append(labels, ExtractDefaultLabels(md)...)
} }
if err != nil { if err != nil {
sp.SetStatus(tracer.SpanStatusError, err.Error()) sp.SetStatus(tracer.SpanStatusError, err.Error())
@ -37,10 +37,9 @@ var (
} }
DefaultClientStreamObserver = func(ctx context.Context, req client.Request, opts []client.CallOption, stream client.Stream, sp tracer.Span, err error) { DefaultClientStreamObserver = func(ctx context.Context, req client.Request, opts []client.CallOption, stream client.Stream, sp tracer.Span, err error) {
sp.SetName(fmt.Sprintf("Stream %s.%s", req.Service(), req.Method()))
var labels []interface{} var labels []interface{}
if md, ok := metadata.FromOutgoingContext(ctx); ok { if md, ok := metadata.FromOutgoingContext(ctx); ok {
labels = append(labels, extractLabels(md)) labels = append(labels, ExtractDefaultLabels(md)...)
} }
if err != nil { if err != nil {
sp.SetStatus(tracer.SpanStatusError, err.Error()) sp.SetStatus(tracer.SpanStatusError, err.Error())
@ -49,11 +48,11 @@ var (
} }
DefaultClientPublishObserver = func(ctx context.Context, msg client.Message, opts []client.PublishOption, sp tracer.Span, err error) { DefaultClientPublishObserver = func(ctx context.Context, msg client.Message, opts []client.PublishOption, sp tracer.Span, err error) {
sp.SetName(fmt.Sprintf("Publish %s", msg.Topic()))
var labels []interface{} var labels []interface{}
if md, ok := metadata.FromOutgoingContext(ctx); ok { if md, ok := metadata.FromOutgoingContext(ctx); ok {
labels = append(labels, extractLabels(md)) labels = append(labels, ExtractDefaultLabels(md)...)
} }
labels = append(labels, ExtractDefaultLabels(msg.Metadata())...)
if err != nil { if err != nil {
sp.SetStatus(tracer.SpanStatusError, err.Error()) sp.SetStatus(tracer.SpanStatusError, err.Error())
} }
@ -61,10 +60,9 @@ var (
} }
DefaultServerHandlerObserver = func(ctx context.Context, req server.Request, rsp interface{}, sp tracer.Span, err error) { DefaultServerHandlerObserver = func(ctx context.Context, req server.Request, rsp interface{}, sp tracer.Span, err error) {
sp.SetName(fmt.Sprintf("Handler %s.%s", req.Service(), req.Method()))
var labels []interface{} var labels []interface{}
if md, ok := metadata.FromIncomingContext(ctx); ok { if md, ok := metadata.FromIncomingContext(ctx); ok {
labels = append(labels, extractLabels(md)) labels = append(labels, ExtractDefaultLabels(md)...)
} }
if err != nil { if err != nil {
sp.SetStatus(tracer.SpanStatusError, err.Error()) sp.SetStatus(tracer.SpanStatusError, err.Error())
@ -73,11 +71,12 @@ var (
} }
DefaultServerSubscriberObserver = func(ctx context.Context, msg server.Message, sp tracer.Span, err error) { DefaultServerSubscriberObserver = func(ctx context.Context, msg server.Message, sp tracer.Span, err error) {
sp.SetName(fmt.Sprintf("Subscriber %s", msg.Topic()))
var labels []interface{} var labels []interface{}
if md, ok := metadata.FromIncomingContext(ctx); ok { if md, ok := metadata.FromIncomingContext(ctx); ok {
labels = append(labels, extractLabels(md)) labels = append(labels, ExtractDefaultLabels(md)...)
} }
labels = append(labels, ExtractDefaultLabels(msg.Header())...)
if err != nil { if err != nil {
sp.SetStatus(tracer.SpanStatusError, err.Error()) sp.SetStatus(tracer.SpanStatusError, err.Error())
} }
@ -85,10 +84,10 @@ var (
} }
DefaultClientCallFuncObserver = func(ctx context.Context, addr string, req client.Request, rsp interface{}, opts client.CallOptions, sp tracer.Span, err error) { DefaultClientCallFuncObserver = func(ctx context.Context, addr string, req client.Request, rsp interface{}, opts client.CallOptions, sp tracer.Span, err error) {
sp.SetName(fmt.Sprintf("Call %s.%s", req.Service(), req.Method())) sp.SetName(fmt.Sprintf("%s.%s call", req.Service(), req.Method()))
var labels []interface{} var labels []interface{}
if md, ok := metadata.FromOutgoingContext(ctx); ok { if md, ok := metadata.FromOutgoingContext(ctx); ok {
labels = append(labels, extractLabels(md)) labels = append(labels, ExtractDefaultLabels(md)...)
} }
if err != nil { if err != nil {
sp.SetStatus(tracer.SpanStatusError, err.Error()) sp.SetStatus(tracer.SpanStatusError, err.Error())
@ -223,23 +222,22 @@ func (ot *tWrapper) Call(ctx context.Context, req client.Request, rsp interface{
} }
} }
sp, ok := tracer.SpanFromContext(ctx) nctx, sp := ot.opts.Tracer.Start(ctx, fmt.Sprintf("%s.%s rpc-client", req.Service(), req.Method()),
if !ok { tracer.WithSpanKind(tracer.SpanKindClient),
ctx, sp = ot.opts.Tracer.Start(ctx, "rpc-client", tracer.WithSpanLabels(
tracer.WithSpanKind(tracer.SpanKindClient), "rpc.service", req.Service(),
tracer.WithSpanLabels( "rpc.method", req.Method(),
"rpc.flavor", "rpc", "rpc.flavor", "rpc",
"rpc.call", "/"+req.Service()+"/"+req.Endpoint(), "rpc.call", "/"+req.Service()+"/"+req.Endpoint(),
"rpc.call_type", "unary", "rpc.call_type", "unary",
), ),
) )
}
defer sp.Finish() defer sp.Finish()
err := ot.Client.Call(ctx, req, rsp, opts...) err := ot.Client.Call(nctx, req, rsp, opts...)
for _, o := range ot.opts.ClientCallObservers { for _, o := range ot.opts.ClientCallObservers {
o(ctx, req, rsp, opts, sp, err) o(nctx, req, rsp, opts, sp, err)
} }
return err return err
@ -253,39 +251,36 @@ func (ot *tWrapper) Stream(ctx context.Context, req client.Request, opts ...clie
} }
} }
sp, ok := tracer.SpanFromContext(ctx) nctx, sp := ot.opts.Tracer.Start(ctx, fmt.Sprintf("%s.%s rpc-client", req.Service(), req.Method()),
if !ok { tracer.WithSpanKind(tracer.SpanKindClient),
ctx, sp = ot.opts.Tracer.Start(ctx, "rpc-client", tracer.WithSpanLabels(
tracer.WithSpanKind(tracer.SpanKindClient), "rpc.service", req.Service(),
tracer.WithSpanLabels( "rpc.method", req.Method(),
"rpc.flavor", "rpc", "rpc.flavor", "rpc",
"rpc.call", "/"+req.Service()+"/"+req.Endpoint(), "rpc.call", "/"+req.Service()+"/"+req.Endpoint(),
"rpc.call_type", "stream", "rpc.call_type", "stream",
), ),
) )
}
defer sp.Finish() defer sp.Finish()
stream, err := ot.Client.Stream(ctx, req, opts...) stream, err := ot.Client.Stream(nctx, req, opts...)
for _, o := range ot.opts.ClientStreamObservers { for _, o := range ot.opts.ClientStreamObservers {
o(ctx, req, opts, stream, sp, err) o(nctx, req, opts, stream, sp, err)
} }
return stream, err return stream, err
} }
func (ot *tWrapper) Publish(ctx context.Context, msg client.Message, opts ...client.PublishOption) error { func (ot *tWrapper) Publish(ctx context.Context, msg client.Message, opts ...client.PublishOption) error {
sp, ok := tracer.SpanFromContext(ctx) nctx, sp := ot.opts.Tracer.Start(ctx, msg.Topic()+" publish", tracer.WithSpanKind(tracer.SpanKindProducer))
if !ok {
ctx, sp = ot.opts.Tracer.Start(ctx, "", tracer.WithSpanKind(tracer.SpanKindProducer))
}
defer sp.Finish() defer sp.Finish()
sp.AddLabels("messaging.destination.name", msg.Topic())
err := ot.Client.Publish(ctx, msg, opts...) sp.AddLabels("messaging.operation", "publish")
err := ot.Client.Publish(nctx, msg, opts...)
for _, o := range ot.opts.ClientPublishObservers { for _, o := range ot.opts.ClientPublishObservers {
o(ctx, msg, opts, sp, err) o(nctx, msg, opts, sp, err)
} }
return err return err
@ -304,40 +299,36 @@ func (ot *tWrapper) ServerHandler(ctx context.Context, req server.Request, rsp i
callType = "stream" callType = "stream"
} }
sp, ok := tracer.SpanFromContext(ctx) nctx, sp := ot.opts.Tracer.Start(ctx, fmt.Sprintf("%s.%s rpc-server", req.Service(), req.Method()),
if !ok { tracer.WithSpanKind(tracer.SpanKindServer),
ctx, sp = ot.opts.Tracer.Start(ctx, "rpc-server", tracer.WithSpanLabels(
tracer.WithSpanKind(tracer.SpanKindServer), "rpc.service", req.Service(),
tracer.WithSpanLabels( "rpc.method", req.Method(),
"rpc.flavor", "rpc", "rpc.flavor", "rpc",
"rpc.call", "/"+req.Service()+"/"+req.Endpoint(), "rpc.call", "/"+req.Service()+"/"+req.Endpoint(),
"rpc.call_type", callType, "rpc.call_type", callType,
), ),
) )
}
defer sp.Finish() defer sp.Finish()
err := ot.serverHandler(ctx, req, rsp) err := ot.serverHandler(nctx, req, rsp)
for _, o := range ot.opts.ServerHandlerObservers { for _, o := range ot.opts.ServerHandlerObservers {
o(ctx, req, rsp, sp, err) o(nctx, req, rsp, sp, err)
} }
return err return err
} }
func (ot *tWrapper) ServerSubscriber(ctx context.Context, msg server.Message) error { func (ot *tWrapper) ServerSubscriber(ctx context.Context, msg server.Message) error {
sp, ok := tracer.SpanFromContext(ctx) nctx, sp := ot.opts.Tracer.Start(ctx, msg.Topic()+" process", tracer.WithSpanKind(tracer.SpanKindConsumer))
if !ok {
ctx, sp = ot.opts.Tracer.Start(ctx, "", tracer.WithSpanKind(tracer.SpanKindConsumer))
}
defer sp.Finish() defer sp.Finish()
sp.AddLabels("messaging.operation", "process")
err := ot.serverSubscriber(ctx, msg) sp.AddLabels("messaging.source.name", msg.Topic())
err := ot.serverSubscriber(nctx, msg)
for _, o := range ot.opts.ServerSubscriberObservers { for _, o := range ot.opts.ServerSubscriberObservers {
o(ctx, msg, sp, err) o(nctx, msg, sp, err)
} }
return err return err
@ -375,23 +366,23 @@ func (ot *tWrapper) ClientCallFunc(ctx context.Context, addr string, req client.
} }
} }
sp, ok := tracer.SpanFromContext(ctx) nctx, sp := ot.opts.Tracer.Start(ctx, fmt.Sprintf("%s.%s rpc-client", req.Service(), req.Method()),
if !ok { tracer.WithSpanKind(tracer.SpanKindClient),
ctx, sp = ot.opts.Tracer.Start(ctx, "rpc-client", tracer.WithSpanLabels(
tracer.WithSpanKind(tracer.SpanKindClient), "rpc.service", req.Service(),
tracer.WithSpanLabels( "rpc.method", req.Method(),
"rpc.flavor", "rpc", "rpc.flavor", "rpc",
"rpc.call", "/"+req.Service()+"/"+req.Endpoint(), "rpc.call", "/"+req.Service()+"/"+req.Endpoint(),
"rpc.call_type", "unary", "rpc.call_type", "unary",
), ),
) )
}
defer sp.Finish() defer sp.Finish()
err := ot.clientCallFunc(ctx, addr, req, rsp, opts) err := ot.clientCallFunc(nctx, addr, req, rsp, opts)
for _, o := range ot.opts.ClientCallFuncObservers { for _, o := range ot.opts.ClientCallFuncObservers {
o(ctx, addr, req, rsp, opts, sp, err) o(nctx, addr, req, rsp, opts, sp, err)
} }
return err return err