/
main.go
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/
main.go
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/*
* Copyright 2022 CloudWeGo 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"
"time"
"github.com/cloudwego/hertz/pkg/app/client"
"github.com/cloudwego/hertz/pkg/common/hlog"
hertzlogrus "github.com/hertz-contrib/obs-opentelemetry/logging/logrus"
"github.com/hertz-contrib/obs-opentelemetry/provider"
hertztracing "github.com/hertz-contrib/obs-opentelemetry/tracing"
"go.opentelemetry.io/otel"
"go.opentelemetry.io/otel/attribute"
)
func main() {
hlog.SetLogger(hertzlogrus.NewLogger())
hlog.SetLevel(hlog.LevelDebug)
serviceName := "demo-hertz-client"
p := provider.NewOpenTelemetryProvider(
provider.WithServiceName(serviceName),
// Support setting ExportEndpoint via environment variables: OTEL_EXPORTER_OTLP_ENDPOINT
provider.WithExportEndpoint("localhost:4317"),
provider.WithInsecure(),
)
defer p.Shutdown(context.Background())
c, _ := client.NewClient()
c.Use(hertztracing.ClientMiddleware())
for {
ctx, span := otel.Tracer("github.com/hertz-contrib/obs-opentelemetry").
Start(context.Background(), "loop")
_, b, err := c.Get(ctx, nil, "http://0.0.0.0:8888/ping?foo=bar")
if err != nil {
hlog.CtxErrorf(ctx, err.Error())
}
span.SetAttributes(attribute.String("msg", string(b)))
hlog.CtxInfof(ctx, "hertz client %s", string(b))
span.End()
<-time.After(time.Second)
}
}