forked from zeromicro/go-zero
/
utils.go
69 lines (57 loc) · 1.6 KB
/
utils.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
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
package trace
import (
"context"
"net"
"strings"
"go.opentelemetry.io/otel/attribute"
semconv "go.opentelemetry.io/otel/semconv/v1.4.0"
"google.golang.org/grpc/peer"
)
const localhost = "127.0.0.1"
// PeerFromCtx returns the peer from ctx.
func PeerFromCtx(ctx context.Context) string {
p, ok := peer.FromContext(ctx)
if !ok || p == nil {
return ""
}
return p.Addr.String()
}
// SpanInfo returns the span info.
func SpanInfo(fullMethod, peerAddress string) (string, []attribute.KeyValue) {
attrs := []attribute.KeyValue{RPCSystemGRPC}
name, mAttrs := ParseFullMethod(fullMethod)
attrs = append(attrs, mAttrs...)
attrs = append(attrs, PeerAttr(peerAddress)...)
return name, attrs
}
// ParseFullMethod returns the method name and attributes.
func ParseFullMethod(fullMethod string) (string, []attribute.KeyValue) {
name := strings.TrimLeft(fullMethod, "/")
parts := strings.SplitN(name, "/", 2)
if len(parts) != 2 {
// Invalid format, does not follow `/package.service/method`.
return name, []attribute.KeyValue(nil)
}
var attrs []attribute.KeyValue
if service := parts[0]; service != "" {
attrs = append(attrs, semconv.RPCServiceKey.String(service))
}
if method := parts[1]; method != "" {
attrs = append(attrs, semconv.RPCMethodKey.String(method))
}
return name, attrs
}
// PeerAttr returns the peer attributes.
func PeerAttr(addr string) []attribute.KeyValue {
host, port, err := net.SplitHostPort(addr)
if err != nil {
return nil
}
if len(host) == 0 {
host = localhost
}
return []attribute.KeyValue{
semconv.NetPeerIPKey.String(host),
semconv.NetPeerPortKey.String(port),
}
}