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opentelemetry-go/example/zipkin/main.go
Andrew Hsu 6402598a1f
add Dockerfile and docker-compose.yml to run example code (#635)
* add optional server url arg to http client example

Signed-off-by: Andrew Hsu <xuzuan@gmail.com>

* add Dockerfile to build example http images

Multi-stage Dockerfile with targets for building example http server and
client.

  $ docker build --tag the-server --target example-http-server .
  $ docker build --tag the-client --target example-http-client .

Signed-off-by: Andrew Hsu <xuzuan@gmail.com>

* add docker-compose.yml file for running examples

This docker compose configuration file will help a new user to compile
and run the example code quickly. Uses the Dockerfile to build images
with compiled examples.

  $ docker-compose build http-server http-client
  $ docker-compose up http-server http-client

Signed-off-by: Andrew Hsu <xuzuan@gmail.com>

* add newline to last message of example http client

Signed-off-by: Andrew Hsu <xuzuan@gmail.com>

* add optional collector url arg to zipkin client example

Signed-off-by: Andrew Hsu <xuzuan@gmail.com>

* add Dockerfile target to build zipkin client

For building the example zipkin client:

  $ docker build --tag zipkin-client --target example-zipkin-client .

Signed-off-by: Andrew Hsu <xuzuan@gmail.com>

* add docker compose service to run zipkin examples

Services to run the zipkin client along with a zipkin collector:

  $ docker-compose build zipkin-client
  $ docker-compose up zipkin-collector zipkin-client

Since the zipkin collector takes a few seconds before it is ready to
receive traces, I added a simple retry loop to the client command.

The collector service exposes port 9411 so user can visit
http//localhost:9411/ to see the trace sent to the collector. Be sure to
search by the trace id logged by the client.

Signed-off-by: Andrew Hsu <xuzuan@gmail.com>

* Update Dockerfile with AL2 declaration

As described in https://www.apache.org/licenses/LICENSE-2.0#apply

Co-Authored-By: Tyler Yahn <MrAlias@users.noreply.github.com>

* Update docker-compose.yml with AL2 declaration

As described in https://www.apache.org/licenses/LICENSE-2.0#apply

Co-Authored-By: Tyler Yahn <MrAlias@users.noreply.github.com>

* pass server url as flag in example http client

  $ ./client -h
  Usage of ./client:
    -server string
          server url (default "http://localhost:7777/hello")

Signed-off-by: Andrew Hsu <xuzuan@gmail.com>

* pass zipkin url as flag in example zipkin client

  $ ./zipkin -h
  Usage of ./zipkin:
    -zipkin string
          zipkin url (default "http://localhost:9411/api/v2/spans")

Signed-off-by: Andrew Hsu <xuzuan@gmail.com>

* move Dockerfile and docker-compose.yml into example dir

Signed-off-by: Andrew Hsu <xuzuan@gmail.com>

* add Dockerfile and docker-compose.yml for zipkin example

Signed-off-by: Andrew Hsu <xuzuan@gmail.com>

* update zipkin example README.md

With instructions on how to use docker-compose to run the example.

Signed-off-by: Andrew Hsu <xuzuan@gmail.com>

* add http example README.md

With instructions on how to use docker-compose to run the example.

Signed-off-by: Andrew Hsu <xuzuan@gmail.com>

* Update example/http/Dockerfile WORKDIR

Co-Authored-By: Krzesimir Nowak <qdlacz@gmail.com>

* Update example/http/Dockerfile RUN go install

Co-Authored-By: Krzesimir Nowak <qdlacz@gmail.com>

* Update example/http/Dockerfile RUN go install

Co-Authored-By: Krzesimir Nowak <qdlacz@gmail.com>

* Update example/zipkin/Dockerfile WORKDIR

Co-Authored-By: Krzesimir Nowak <qdlacz@gmail.com>

* Update example/zipkin/Dockerfile RUN go install

Co-Authored-By: Krzesimir Nowak <qdlacz@gmail.com>

Co-authored-by: Tyler Yahn <MrAlias@users.noreply.github.com>
Co-authored-by: Krzesimir Nowak <qdlacz@gmail.com>
Co-authored-by: Joshua MacDonald <jmacd@users.noreply.github.com>
2020-04-23 13:11:24 -07:00

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2.2 KiB
Go

// Copyright The OpenTelemetry 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.
// Command zipkin is an example program that creates spans
// and uploads to openzipkin collector.
package main
import (
"context"
"flag"
"log"
"os"
"time"
"go.opentelemetry.io/otel/api/global"
"go.opentelemetry.io/otel/exporters/trace/zipkin"
sdktrace "go.opentelemetry.io/otel/sdk/trace"
)
var logger = log.New(os.Stderr, "zipkin-example", log.Ldate|log.Ltime|log.Llongfile)
// initTracer creates a new trace provider instance and registers it as global trace provider.
func initTracer(url string) {
// Create Zipkin Exporter
exporter, err := zipkin.NewExporter(
url,
"zipkin-example",
zipkin.WithLogger(logger),
)
if err != nil {
log.Fatal(err)
}
// For demoing purposes, always sample. In a production application, you should
// configure this to a trace.ProbabilitySampler set at the desired
// probability.
tp, err := sdktrace.NewProvider(
sdktrace.WithConfig(sdktrace.Config{DefaultSampler: sdktrace.AlwaysSample()}),
sdktrace.WithBatcher(exporter,
sdktrace.WithScheduleDelayMillis(5),
sdktrace.WithMaxExportBatchSize(10),
),
)
if err != nil {
log.Fatal(err)
}
global.SetTraceProvider(tp)
}
func main() {
url := flag.String("zipkin", "http://localhost:9411/api/v2/spans", "zipkin url")
flag.Parse()
initTracer(*url)
ctx := context.Background()
tr := global.TraceProvider().Tracer("component-main")
ctx, span := tr.Start(ctx, "foo")
<-time.After(6 * time.Millisecond)
bar(ctx)
<-time.After(6 * time.Millisecond)
span.End()
<-time.After(24 * time.Millisecond)
}
func bar(ctx context.Context) {
tr := global.TraceProvider().Tracer("component-bar")
_, span := tr.Start(ctx, "bar")
<-time.After(6 * time.Millisecond)
span.End()
}