This repository has been archived by the owner on May 27, 2021. It is now read-only.
forked from DataDog/dd-trace-go
/
grpc.go
48 lines (42 loc) · 1.66 KB
/
grpc.go
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
//go:generate protoc -I . fixtures_test.proto --go_out=plugins=grpc:.
// Package grpc provides functions to trace the google.golang.org/grpc package v1.2.
package grpc // import "gopkg.in/DataDog/dd-trace-go.v1/contrib/google.golang.org/grpc"
import (
"io"
"gopkg.in/DataDog/dd-trace-go.v1/contrib/google.golang.org/internal/grpcutil"
"gopkg.in/DataDog/dd-trace-go.v1/ddtrace"
"gopkg.in/DataDog/dd-trace-go.v1/ddtrace/ext"
"gopkg.in/DataDog/dd-trace-go.v1/ddtrace/tracer"
context "golang.org/x/net/context"
"google.golang.org/grpc/codes"
"google.golang.org/grpc/metadata"
"google.golang.org/grpc/status"
)
func startSpanFromContext(ctx context.Context, method, operation, service string) (ddtrace.Span, context.Context) {
opts := []ddtrace.StartSpanOption{
tracer.ServiceName(service),
tracer.ResourceName(method),
tracer.Tag(tagMethod, method),
tracer.SpanType(ext.AppTypeRPC),
}
md, _ := metadata.FromIncomingContext(ctx) // nil is ok
if sctx, err := tracer.Extract(grpcutil.MDCarrier(md)); err == nil {
opts = append(opts, tracer.ChildOf(sctx))
}
return tracer.StartSpanFromContext(ctx, operation, opts...)
}
// finishWithError applies finish option and a tag with gRPC status code, disregarding OK, EOF and Canceled errors.
func finishWithError(span ddtrace.Span, err error, noDebugStack bool) {
errcode := status.Code(err)
if err == io.EOF || errcode == codes.Canceled || errcode == codes.OK || err == context.Canceled {
err = nil
}
span.SetTag(tagCode, errcode.String())
finishOptions := []tracer.FinishOption{
tracer.WithError(err),
}
if noDebugStack {
finishOptions = append(finishOptions, tracer.NoDebugStack())
}
span.Finish(finishOptions...)
}