forked from aliyun/fc-runtime-go-sdk
/
tracing-jaeger.go
65 lines (54 loc) · 1.7 KB
/
tracing-jaeger.go
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package main
import (
"context"
"fmt"
"io"
"time"
"github.com/aliyun/fc-runtime-go-sdk/fc"
"github.com/aliyun/fc-runtime-go-sdk/fccontext"
"github.com/opentracing/opentracing-go"
"github.com/opentracing/opentracing-go/log"
"github.com/uber/jaeger-client-go"
"github.com/uber/jaeger-client-go/transport"
)
type MyEvent struct {
Name string `json:"name"`
}
func NewJaegerTracer(service, endpoint string) (opentracing.Tracer, io.Closer) {
sender := transport.NewHTTPTransport(endpoint)
tracer, closer := jaeger.NewTracer(service,
jaeger.NewConstSampler(true),
jaeger.NewRemoteReporter(sender))
return tracer, closer
}
func HandleRequest(ctx context.Context, event MyEvent) (string, error) {
fctx, _ := fccontext.FromContext(ctx)
fmt.Printf("context: %#v\n", fctx)
fmt.Println("hello world")
// New tracer
tracer, closer := NewJaegerTracer("FCTracer", fctx.Tracing.JaegerEndpoint)
defer closer.Close()
// retrieve spanContext
spanContext, err := jaeger.ContextFromString(fctx.Tracing.OpenTracingSpanContext)
if err != nil {
return "", fmt.Errorf("OpenTracingSpanContext: %s, error: %v", fctx.Tracing.OpenTracingSpanContext, err)
}
// span start/finish
span := tracer.StartSpan("MyFCSpan", opentracing.ChildOf(spanContext))
for k, v := range fctx.Tracing.OpenTracingSpanBaggages {
span.SetBaggageItem(k, v)
}
span.SetOperationName("fc-operation")
span.SetTag("version", "fc-v1")
time.Sleep(100 * time.Millisecond)
span.LogFields(
log.String("event", "soft error"),
log.String("type", "cache timeout"),
log.Int("waited.millis", 100))
time.Sleep(100 * time.Millisecond)
span.Finish()
return fmt.Sprintf("hello world! 你好,%s!", event.Name), nil
}
func main() {
fc.Start(HandleRequest)
}