-
Notifications
You must be signed in to change notification settings - Fork 223
/
tracing.go
198 lines (160 loc) · 4.71 KB
/
tracing.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
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
package tracing
import (
"context"
"fmt"
"log/slog"
"net/http"
"os"
"go.opentelemetry.io/otel"
"go.opentelemetry.io/otel/attribute"
"go.opentelemetry.io/otel/codes"
"go.opentelemetry.io/otel/exporters/otlp/otlptrace/otlptracehttp"
"go.opentelemetry.io/otel/exporters/stdout/stdouttrace"
"go.opentelemetry.io/otel/propagation"
"go.opentelemetry.io/otel/sdk/resource"
sdktrace "go.opentelemetry.io/otel/sdk/trace"
semconv "go.opentelemetry.io/otel/semconv/v1.21.0"
"go.opentelemetry.io/otel/trace"
"github.com/go-logr/logr"
"github.com/superfly/flyctl/internal/buildinfo"
"github.com/superfly/flyctl/internal/config"
"github.com/superfly/flyctl/internal/logger"
"github.com/superfly/flyctl/iostreams"
)
var tp *sdktrace.TracerProvider
const (
tracerName = "github.com/superfly/flyctl"
HeaderFlyTraceId = "fly-trace-id"
HeaderFlySpanId = "fly-span-id"
)
func getCollectorUrl() string {
url := os.Getenv("FLY_TRACE_COLLECTOR_URL")
if url != "" {
return url
}
if buildinfo.IsDev() {
return "fly-otel-collector-dev.fly.dev"
}
return "fly-otel-collector-prod.fly.dev"
}
func GetTracer() trace.Tracer {
return otel.Tracer(tracerName)
}
func RecordError(span trace.Span, err error, description string) {
span.RecordError(err)
span.SetStatus(codes.Error, description)
}
func CreateLinkSpan(ctx context.Context, res *http.Response) {
remoteSpanCtx := SpanContextFromHeaders(res)
_, span := GetTracer().Start(ctx, "flaps.link", trace.WithLinks(trace.Link{SpanContext: remoteSpanCtx}))
defer span.End()
}
func SpanContextFromHeaders(res *http.Response) trace.SpanContext {
traceIDstr := res.Header.Get(HeaderFlyTraceId)
spanIDstr := res.Header.Get(HeaderFlySpanId)
traceID, _ := trace.TraceIDFromHex(traceIDstr)
spanID, _ := trace.SpanIDFromHex(spanIDstr)
return trace.NewSpanContext(trace.SpanContextConfig{
TraceID: traceID,
SpanID: spanID,
})
}
func CMDSpan(ctx context.Context, spanName string, opts ...trace.SpanStartOption) (context.Context, trace.Span) {
startOpts := []trace.SpanStartOption{
trace.WithSpanKind(trace.SpanKindClient),
}
startOpts = append(startOpts, opts...)
return GetTracer().Start(ctx, spanName, startOpts...)
}
func getToken(ctx context.Context) string {
token := config.Tokens(ctx).Flaps()
if token == "" {
token = os.Getenv("FLY_API_TOKEN")
}
return token
}
func InitTraceProviderWithoutApp(ctx context.Context) (*sdktrace.TracerProvider, error) {
return InitTraceProvider(ctx, "")
}
func InitTraceProvider(ctx context.Context, appName string) (*sdktrace.TracerProvider, error) {
if tp != nil {
return tp, nil
}
var exporter sdktrace.SpanExporter
switch {
case os.Getenv("LOG_LEVEL") == "trace":
stdoutExp, err := stdouttrace.New(stdouttrace.WithPrettyPrint())
if err != nil {
return nil, err
}
exporter = stdoutExp
default:
opts := []otlptracehttp.Option{
otlptracehttp.WithEndpoint(getCollectorUrl() + ":4318"),
otlptracehttp.WithInsecure(),
otlptracehttp.WithHeaders(map[string]string{
"authorization": getToken(ctx),
}),
}
httpExporter, err := otlptracehttp.New(ctx, opts...)
if err != nil {
return nil, fmt.Errorf("failed to connect to telemetry collector")
}
exporter = httpExporter
}
resourceAttrs := []attribute.KeyValue{
semconv.ServiceNameKey.String("flyctl"),
attribute.String("build.info.version", buildinfo.Version().String()),
attribute.String("build.info.os", buildinfo.OS()),
attribute.String("build.info.arch", buildinfo.Arch()),
attribute.String("build.info.commit", buildinfo.Commit()),
}
if appName != "" {
resourceAttrs = append(resourceAttrs, attribute.String("app.name", appName))
}
resource := resource.NewWithAttributes(
semconv.SchemaURL,
resourceAttrs...,
)
tp = sdktrace.NewTracerProvider(
sdktrace.WithBatcher(exporter),
sdktrace.WithResource(resource),
)
otel.SetTracerProvider(tp)
otel.SetTextMapPropagator(
propagation.NewCompositeTextMapPropagator(
propagation.TraceContext{},
propagation.Baggage{},
),
)
otel.SetLogger(otelLogger(ctx))
otel.SetErrorHandler(errorHandler(ctx))
return tp, nil
}
func otelLogger(ctx context.Context) logr.Logger {
io := iostreams.FromContext(ctx)
var level slog.Level
switch os.Getenv("LOG_LEVEL") {
case "debug":
level = slog.LevelDebug
case "info":
level = slog.LevelInfo
case "warn":
level = slog.LevelWarn
case "error":
level = slog.LevelError
default:
level = slog.LevelInfo
}
opts := &slog.HandlerOptions{
Level: level,
}
handler := slog.NewTextHandler(io.ErrOut, opts)
return logr.FromSlogHandler(handler)
}
func errorHandler(ctx context.Context) otel.ErrorHandler {
logger := logger.FromContext(ctx)
return otel.ErrorHandlerFunc(func(err error) {
logger.Debug("trace exporter", "error", err)
})
}