/
config_tracer.go
65 lines (58 loc) · 1.79 KB
/
config_tracer.go
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package helper
import (
"errors"
"io"
"os"
gcpexporter "github.com/GoogleCloudPlatform/opentelemetry-operations-go/exporter/trace"
"go.opentelemetry.io/otel/exporters/jaeger"
"go.opentelemetry.io/otel/exporters/stdout/stdouttrace"
"go.opentelemetry.io/otel/sdk/resource"
sdktrace "go.opentelemetry.io/otel/sdk/trace"
semconv "go.opentelemetry.io/otel/semconv/v1.7.0"
)
type JaegerConfig struct {
Endpoint string `yaml:"endpoint" validate:"required"`
}
type TraceConfig struct {
Exporter string `yaml:"exporter" validate:"required"`
Jaeger *JaegerConfig `yaml:"jaeger"`
}
func initTracerExporter(traceConfig *TraceConfig) (sdktrace.SpanExporter, error) {
switch traceConfig.Exporter {
case "jaeger":
// Create the Jaeger exporter
return jaeger.New(jaeger.WithCollectorEndpoint(jaeger.WithEndpoint(traceConfig.Jaeger.Endpoint)))
case "gcp":
projectID := os.Getenv("GOOGLE_CLOUD_PROJECT")
return gcpexporter.New(gcpexporter.WithProjectID(projectID))
case "stdout":
return stdouttrace.New(
stdouttrace.WithPrettyPrint(),
stdouttrace.WithWriter(os.Stderr),
)
case "none":
return stdouttrace.New(
stdouttrace.WithPrettyPrint(),
stdouttrace.WithWriter(io.Discard),
)
default:
return nil, errors.New("invalid argument")
}
}
func InitTracerProvider(appName string, traceConfig *TraceConfig) (*sdktrace.TracerProvider, error) {
exp, err := initTracerExporter(traceConfig)
if err != nil {
return nil, err
}
tp := sdktrace.NewTracerProvider(
// Always be sure to batch in production.
sdktrace.WithBatcher(exp),
sdktrace.WithSampler(sdktrace.AlwaysSample()),
// Record information about this application in a Resource.
sdktrace.WithResource(resource.NewWithAttributes(
semconv.SchemaURL,
semconv.ServiceNameKey.String(appName),
)),
)
return tp, nil
}