-
Notifications
You must be signed in to change notification settings - Fork 1
/
server.go
63 lines (55 loc) · 1.42 KB
/
server.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
package main
import (
"flag"
opentracing "github.com/opentracing/opentracing-go"
"github.com/uber/jaeger-client-go"
"github.com/uber/jaeger-client-go/config"
"log"
"net/http"
"time"
)
const (
serviceName = "hello-server"
hostPort = "0.0.0.0:0"
debug = false
sameSpan = false
traceID128Bit = true
)
var collectorHost = flag.String("collector_host", "localhost", "Host for Jaeger Collector")
var collectorPort = flag.String("collector_port", "6831", "Port for Jaeger Collector")
func handler(w http.ResponseWriter, r *http.Request) {
wireContext, _ := opentracing.GlobalTracer().Extract(
opentracing.HTTPHeaders,
opentracing.HTTPHeadersCarrier(r.Header))
span := opentracing.StartSpan(
"/",
opentracing.ChildOf(wireContext))
defer span.Finish()
tm := time.Now().Format(time.RFC1123)
w.Write([]byte("The time is " + tm))
}
func main() {
flag.Parse()
cfg := config.Configuration{
Sampler: &config.SamplerConfig{
Type: "const",
Param: 1,
},
Reporter: &config.ReporterConfig{
LocalAgentHostPort: *collectorHost + ":" + *collectorPort,
LogSpans: true,
BufferFlushInterval: 1 * time.Second,
},
}
closer, err := cfg.InitGlobalTracer(
"backend",
config.Logger(jaeger.StdLogger),
)
if err != nil {
log.Printf("Could not initialize jaeger tracer: %s", err.Error())
return
}
defer closer.Close()
http.HandleFunc("/", handler)
http.ListenAndServe(":9001", nil)
}