File: shared.go

package info (click to toggle)
golang-github-openzipkin-zipkin-go 0.1.5%2Bgit20190103.2fd7f4a-1
  • links: PTS, VCS
  • area: main
  • in suites: buster
  • size: 532 kB
  • sloc: makefile: 22
file content (57 lines) | stat: -rw-r--r-- 1,434 bytes parent folder | download | duplicates (2)
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
49
50
51
52
53
54
55
56
57
package grpc

import (
	"context"
	"strings"

	"google.golang.org/grpc/codes"
	"google.golang.org/grpc/peer"
	"google.golang.org/grpc/stats"
	"google.golang.org/grpc/status"

	"github.com/openzipkin/zipkin-go"
	"github.com/openzipkin/zipkin-go/model"
)

// A RPCHandler can be registered using WithClientRPCHandler or WithServerRPCHandler to intercept calls to HandleRPC of
// a handler for additional span customization.
type RPCHandler func(span zipkin.Span, rpcStats stats.RPCStats)

func spanName(rti *stats.RPCTagInfo) string {
	name := strings.TrimPrefix(rti.FullMethodName, "/")
	name = strings.Replace(name, "/", ".", -1)
	return name
}

func handleRPC(ctx context.Context, rs stats.RPCStats) {
	span := zipkin.SpanFromContext(ctx)

	switch rs := rs.(type) {
	case *stats.End:
		s, ok := status.FromError(rs.Error)
		// rs.Error should always be convertable to a status, this is just a defensive check.
		if ok {
			if s.Code() != codes.OK {
				// Uppercase for consistency with Brave
				c := strings.ToUpper(s.Code().String())
				span.Tag("grpc.status_code", c)
				zipkin.TagError.Set(span, c)
			}
		} else {
			zipkin.TagError.Set(span, rs.Error.Error())
		}
		span.Finish()
	}
}

func remoteEndpointFromContext(ctx context.Context, name string) *model.Endpoint {
	remoteAddr := ""

	p, ok := peer.FromContext(ctx)
	if ok {
		remoteAddr = p.Addr.String()
	}

	ep, _ := zipkin.NewEndpoint(name, remoteAddr)
	return ep
}