/
main.go
135 lines (120 loc) · 3.95 KB
/
main.go
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// Copyright (c) 2018 The Jaeger Authors.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package main
import (
"context"
"errors"
"flag"
"fmt"
"github.com/go-logr/zapr"
"go.opentelemetry.io/otel"
"go.opentelemetry.io/otel/exporters/otlp/otlptrace"
"go.opentelemetry.io/otel/exporters/otlp/otlptrace/otlptracegrpc"
"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/v1.24.0"
"go.opentelemetry.io/otel/trace"
"go.uber.org/zap"
"go.uber.org/zap/zapcore"
"github.com/jaegertracing/jaeger/internal/jaegerclientenv2otel"
"github.com/jaegertracing/jaeger/internal/tracegen"
"github.com/jaegertracing/jaeger/pkg/version"
)
func main() {
zc := zap.NewDevelopmentConfig()
zc.Level = zap.NewAtomicLevelAt(zapcore.Level(-8)) // level used by OTEL's Debug()
logger, err := zc.Build()
if err != nil {
panic(err)
}
otel.SetLogger(zapr.NewLogger(logger))
fs := flag.CommandLine
cfg := new(tracegen.Config)
cfg.Flags(fs)
flag.Parse()
logger.Info(version.Get().String())
otel.SetTextMapPropagator(propagation.TraceContext{})
jaegerclientenv2otel.MapJaegerToOtelEnvVars(logger)
tracers, shutdown := createTracers(cfg, logger)
defer shutdown(context.Background())
tracegen.Run(cfg, tracers, logger)
}
func createTracers(cfg *tracegen.Config, logger *zap.Logger) ([]trace.Tracer, func(context.Context) error) {
if cfg.Services < 1 {
cfg.Services = 1
}
var shutdown []func(context.Context) error
var tracers []trace.Tracer
for s := 0; s < cfg.Services; s++ {
svc := cfg.Service
if cfg.Services > 1 {
svc = fmt.Sprintf("%s-%02d", svc, s)
}
exp, err := createOtelExporter(cfg.TraceExporter)
if err != nil {
logger.Sugar().Fatalf("cannot create trace exporter %s: %s", cfg.TraceExporter, err)
}
logger.Sugar().Infof("using %s trace exporter for service %s", cfg.TraceExporter, svc)
res, err := resource.New(
context.Background(),
resource.WithSchemaURL(semconv.SchemaURL),
resource.WithAttributes(semconv.ServiceNameKey.String(svc)),
resource.WithTelemetrySDK(),
resource.WithHost(),
resource.WithOSType(),
)
if err != nil {
logger.Sugar().Fatalf("resource creation failed: %s", err)
}
tp := sdktrace.NewTracerProvider(
sdktrace.WithBatcher(exp, sdktrace.WithBlocking()),
sdktrace.WithResource(res),
)
tracers = append(tracers, tp.Tracer(cfg.Service))
shutdown = append(shutdown, tp.Shutdown)
}
return tracers, func(ctx context.Context) error {
var errs []error
for _, f := range shutdown {
errs = append(errs, f(ctx))
}
return errors.Join(errs...)
}
}
func createOtelExporter(exporterType string) (sdktrace.SpanExporter, error) {
var exporter sdktrace.SpanExporter
var err error
switch exporterType {
case "jaeger":
return nil, errors.New("jaeger exporter is no longer supported, please use otlp")
case "otlp", "otlp-http":
client := otlptracehttp.NewClient(
otlptracehttp.WithInsecure(),
)
exporter, err = otlptrace.New(context.Background(), client)
case "otlp-grpc":
client := otlptracegrpc.NewClient(
otlptracegrpc.WithInsecure(),
)
exporter, err = otlptrace.New(context.Background(), client)
case "stdout":
exporter, err = stdouttrace.New()
default:
return nil, fmt.Errorf("unrecognized exporter type %s", exporterType)
}
return exporter, err
}