/
xtrace.go
130 lines (113 loc) · 3.49 KB
/
xtrace.go
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package xtrace
import (
"context"
"fmt"
"github.com/coder2z/g-saber/xlog"
"github.com/coder2z/g-server/xtrace/jaeger"
"github.com/opentracing/opentracing-go"
"github.com/opentracing/opentracing-go/ext"
"github.com/opentracing/opentracing-go/log"
"google.golang.org/grpc/metadata"
)
func JaegerBuild(cfgKey string) {
cfg := jaeger.RawConfig(cfgKey)
SetGlobalTracer(cfg.Build())
xlog.Info("Application Starting",
xlog.FieldComponentName("XTrace"),
xlog.FieldMethod("XTrace.JaegerBuild"),
xlog.FieldDescription(fmt.Sprintf("XTrace serve registered :%v", cfg.Reporter.LocalAgentHostPort)),
)
}
// SetGlobalTracer ...
func SetGlobalTracer(tracer opentracing.Tracer) {
opentracing.SetGlobalTracer(tracer)
}
// Start ...
func StartSpanFromContext(ctx context.Context, op string, opts ...opentracing.StartSpanOption) (opentracing.Span, context.Context) {
return opentracing.StartSpanFromContext(ctx, op, opts...)
}
// SpanFromContext ...
func SpanFromContext(ctx context.Context) opentracing.Span {
return opentracing.SpanFromContext(ctx)
}
// CustomTag ...
func CustomTag(key string, val interface{}) opentracing.Tag {
return opentracing.Tag{
Key: key,
Value: val,
}
}
// TagComponent ...
func TagComponent(component string) opentracing.Tag {
return opentracing.Tag{
Key: "component",
Value: component,
}
}
// TagSpanKind ...
func TagSpanKind(kind string) opentracing.Tag {
return opentracing.Tag{
Key: "span.kind",
Value: kind,
}
}
// TagSpanURL ...
func TagSpanURL(url string) opentracing.Tag {
return opentracing.Tag{
Key: "span.url",
Value: url,
}
}
// FromIncomingContext ...
func FromIncomingContext(ctx context.Context) opentracing.StartSpanOption {
md, ok := metadata.FromIncomingContext(ctx)
if !ok {
md = metadata.New(nil)
}
sc, err := opentracing.GlobalTracer().Extract(opentracing.HTTPHeaders, MetadataReaderWriter{MD: md})
if err != nil {
return NullStartSpanOption{}
}
return ext.RPCServerOption(sc)
}
// HeaderExtractor ...
func HeaderExtractor(hdr map[string][]string) opentracing.StartSpanOption {
sc, err := opentracing.GlobalTracer().Extract(opentracing.HTTPHeaders, MetadataReaderWriter{MD: hdr})
if err != nil {
return NullStartSpanOption{}
}
return opentracing.ChildOf(sc)
}
type hdrRequestKey struct{}
// HeaderInjector ...
func HeaderInjector(ctx context.Context, hdr map[string][]string) context.Context {
span := opentracing.SpanFromContext(ctx)
err := opentracing.GlobalTracer().Inject(span.Context(), opentracing.HTTPHeaders, MetadataReaderWriter{MD: hdr})
if err != nil {
span.LogFields(log.String("event", "inject failed"), log.Error(err))
return ctx
}
return context.WithValue(ctx, hdrRequestKey{}, hdr)
}
// MetadataExtractor ...
func MetadataExtractor(md map[string][]string) opentracing.StartSpanOption {
sc, err := opentracing.GlobalTracer().Extract(opentracing.HTTPHeaders, MetadataReaderWriter{MD: md})
if err != nil {
return NullStartSpanOption{}
}
return opentracing.ChildOf(sc)
}
// MetadataInjector ...
func MetadataInjector(ctx context.Context, md metadata.MD) context.Context {
span := opentracing.SpanFromContext(ctx)
err := opentracing.GlobalTracer().Inject(span.Context(), opentracing.HTTPHeaders, MetadataReaderWriter{MD: md})
if err != nil {
span.LogFields(log.String("event", "inject failed"), log.Error(err))
return ctx
}
return metadata.NewOutgoingContext(ctx, md)
}
// NullStartSpanOption ...
type NullStartSpanOption struct{}
// Apply ...
func (sso NullStartSpanOption) Apply(options *opentracing.StartSpanOptions) {}