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openobserve.go
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openobserve.go
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package openObserve
import (
"context"
"fmt"
"github.com/hlf513/go-pkg/openTelemetry"
"go.opentelemetry.io/otel/exporters/otlp/otlptrace/otlptracehttp"
"go.opentelemetry.io/otel/sdk/resource"
tracesdk "go.opentelemetry.io/otel/sdk/trace"
semconv "go.opentelemetry.io/otel/semconv/v1.12.0"
"log"
"net/url"
"strings"
"sync"
)
var (
openObserveProvider *tracesdk.TracerProvider
openObserveOnce sync.Once
)
func OpenObserve(opt ...openTelemetry.Option) *tracesdk.TracerProvider {
openObserveOnce.Do(func() {
opts := openTelemetry.NewOptions(opt...)
u, err := url.Parse(opts.Url)
if err != nil {
log.Fatalf("openObserve url error:%s", err.Error())
}
var otlpOptions []otlptracehttp.Option
otlpOptions = append(otlpOptions,
otlptracehttp.WithEndpoint(u.Host),
otlptracehttp.WithURLPath(u.Path),
otlptracehttp.WithHeaders(map[string]string{
"Authorization": fmt.Sprintf("Basic %s", opts.Auth),
}),
)
if strings.ToLower(u.Scheme) == "http" {
otlpOptions = append(otlpOptions, otlptracehttp.WithInsecure())
}
otlpHTTPExporter, err := otlptracehttp.New(context.TODO(), otlpOptions...)
if err != nil {
log.Println("openObserve error:", err.Error())
return
}
res := resource.NewWithAttributes(
semconv.SchemaURL,
// the service name used to display traces in backends
semconv.ServiceNameKey.String(opts.Name),
//semconv.ServiceVersionKey.String("0.0.1"),
//attribute.String("environment", "test"),
)
openObserveProvider = tracesdk.NewTracerProvider(
tracesdk.WithResource(res),
tracesdk.WithBatcher(otlpHTTPExporter),
// Sampler
//tracesdk.WithSampler(tracesdk.AlwaysSample()),
//tracesdk.WithSampler(tracesdk.NeverSample()),
//tracesdk.WithSampler(tracesdk.TraceIDRatioBased(0.5)),
//tracesdk.WithSampler(tracesdk.ParentBased(tracesdk.AlwaysSample())), // default
)
})
return openObserveProvider
}