/
tracer.go
134 lines (108 loc) · 3.9 KB
/
tracer.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
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
package sender
import (
"bytes"
"context"
"flag"
"log"
"strconv"
"strings"
"go.opentelemetry.io/otel"
"golang.org/x/text/encoding/charmap"
"golang.org/x/text/transform"
"go.opentelemetry.io/otel/attribute"
"go.opentelemetry.io/otel/propagation"
"go.opentelemetry.io/otel/sdk/resource"
sdktrace "go.opentelemetry.io/otel/sdk/trace"
semconv "go.opentelemetry.io/otel/semconv/v1.16.0"
"go.opentelemetry.io/otel/trace"
pb "github.com/artemparygin/troubleshooting/protos/logs"
"google.golang.org/grpc"
"google.golang.org/grpc/credentials/insecure"
"google.golang.org/protobuf/types/known/timestamppb"
)
var (
addrTrace = flag.String("addrTrace", "localhost:50055", "default address")
)
type CustomExporter struct{}
func NewCustomExporter() *CustomExporter {
return &CustomExporter{}
}
func convertToUTF82(input string) string {
reader := transform.NewReader(bytes.NewReader([]byte(input)), charmap.Windows1252.NewDecoder())
buf := new(bytes.Buffer)
_, err := buf.ReadFrom(reader)
if err != nil {
return ""
}
return buf.String()
}
func writeTraceToBackend(spans []sdktrace.ReadOnlySpan) {
flag.Parse()
conn, err := grpc.Dial(*addrTrace, grpc.WithTransportCredentials(insecure.NewCredentials()))
if err != nil {
log.Fatalf("did not connect: %v", err)
}
defer conn.Close()
c := pb.NewLogServiceClient(conn)
var sta []*pb.OneSpan
for _, span := range spans {
protoSpan := &pb.OneSpan{
Timestamp: timestamppb.New(span.StartTime()),
TraceId: convertToUTF82(span.SpanContext().TraceID().String()),
SpanId: convertToUTF82(span.SpanContext().SpanID().String()),
ParentSpanId: convertToUTF82(span.Parent().SpanID().String()),
TraceState: convertToUTF82(span.Parent().TraceState().String()),
SpanName: convertToUTF82(span.Name()),
SpanKind: convertToUTF82(span.SpanKind().String()),
ChildSpanCount: int32(span.ChildSpanCount()),
StatusCode: int32(span.Status().Code),
StatusMessage: convertToUTF82(span.Status().Description),
Duration: span.EndTime().UnixMicro() - span.StartTime().UnixMicro(),
}
protoSpan.ResourceAttributes = make(map[string]string)
protoSpan.SpanAttributes = make(map[string]string)
for _, value := range span.Resource().Attributes() {
protoSpan.ResourceAttributes[string(value.Key)] = convertToUTF82(value.Value.AsString())
}
for _, value := range span.Attributes() {
if value.Value.Type() == attribute.INT64 {
protoSpan.SpanAttributes[string(value.Key)] = strconv.FormatInt(value.Value.AsInt64(), 10)
} else {
protoSpan.SpanAttributes[string(value.Key)] = convertToUTF82(value.Value.AsString())
}
}
for _, value := range span.Resource().Attributes() {
if strings.Contains(string(value.Key), "service") {
protoSpan.ServiceName = convertToUTF82(value.Value.AsString())
break
}
}
sta = append(sta, protoSpan)
}
_, err = c.SendSpans(context.Background(), &pb.Spans{Spans: sta})
if err != nil {
log.Fatalf("Error sending log message: %v", err)
}
}
func (e *CustomExporter) ExportSpans(ctx context.Context, spans []sdktrace.ReadOnlySpan) error {
writeTraceToBackend(spans)
return nil
}
func (e *CustomExporter) Shutdown(ctx context.Context) error {
return nil
}
func NewTracer(svcName string) (trace.Tracer, error) {
customExporter := NewCustomExporter()
batcher := sdktrace.NewBatchSpanProcessor(customExporter)
tp := sdktrace.NewTracerProvider(
sdktrace.WithSampler(sdktrace.AlwaysSample()),
sdktrace.WithSpanProcessor(batcher),
sdktrace.WithResource(resource.NewWithAttributes(
semconv.SchemaURL,
semconv.ServiceNameKey.String(svcName),
)),
)
otel.SetTracerProvider(tp)
otel.SetTextMapPropagator(propagation.NewCompositeTextMapPropagator(propagation.TraceContext{}, propagation.Baggage{}))
return otel.Tracer(svcName), nil
}