Simple Log Service：Impor data jejak dari aplikasi Java ke Layanan Log Sederhana menggunakan OpenTelemetry SDK for Java

Kode berikut menunjukkan contoh konfigurasi variabel lingkungan untuk parameter -javaagent dari Java Virtual Machine (JVM). Untuk informasi lebih lanjut, lihat opentelemetry-java-instrumentation. Gantilah variabel seperti ${endpoint} dan ${project} dalam kode dengan nilai sebenarnya.

export OTEL_EXPORTER_OTLP_PROTOCOL=grpc
export OTEL_EXPORTER_OTLP_ENDPOINT=https://${endpoint}
export OTEL_EXPORTER_OTLP_COMPRESSION=gzip
export OTEL_EXPORTER_OTLP_HEADERS=x-sls-otel-project=${project},x-sls-otel-instance-id=${instance},x-sls-otel-ak-id=${access-key-id},x-sls-otel-ak-secret=${access-key-secret}
java -javaagent:/path/to/opentelemetry-javaagent-all.jar  -Dotel.resource.attributes=service.namespace=${service.namespace},service.name=${service},service.version=${version},host.name=${host},deployment.environment=${environment} -jar /path/to/your/app.jar

<dependencies>
    <dependency>
      <groupId>io.opentelemetry</groupId>
      <artifactId>opentelemetry-api</artifactId>
    </dependency>
    <dependency>
      <groupId>io.opentelemetry</groupId>
      <artifactId>opentelemetry-sdk</artifactId>
    </dependency>
    <dependency>
      <groupId>io.opentelemetry</groupId>
      <artifactId>opentelemetry-exporter-otlp</artifactId>
    </dependency>
    <dependency>
      <groupId>io.opentelemetry</groupId>
      <artifactId>opentelemetry-semconv</artifactId>
      <version>1.20.1-alpha</version>
    </dependency>
  </dependencies>
  <dependencyManagement>
    <dependencies>
      <dependency>
        <groupId>io.opentelemetry</groupId>
        <artifactId>opentelemetry-bom</artifactId>
        <version>1.20.1</version>
        <type>pom</type>
        <scope>import</scope>
      </dependency>
    </dependencies>
  </dependencyManagement>

Gantilah variabel seperti ${endpoint} dan ${project} dalam kode berikut dengan nilai sebenarnya. Untuk informasi lebih lanjut tentang variabel, lihat Variabel.

  Resource resource = Resource.getDefault()
                .merge(Resource.create(Attributes.of(ResourceAttributes.SERVICE_NAME, "service-name")))
                .merge(Resource.create(Attributes.of(ResourceAttributes.SERVICE_NAMESPACE, "namespace")))
                .merge(Resource.create(Attributes.of(ResourceAttributes.SERVICE_VERSION, "1.0.0")))
                .merge(Resource.create(Attributes.of(ResourceAttributes.HOST_NAME, "host-name")));

        SdkTracerProvider sdkTracerProvider = SdkTracerProvider.builder()
                .addSpanProcessor(
                        BatchSpanProcessor.builder(OtlpGrpcSpanExporter.builder().setEndpoint("https://${endpoint}") // Setel parameter .setEndpoint ke nilai yang dimulai dengan https://. Contoh: https://test-project.cn-hangzhou.log.aliyuncs.com:10010. 
                                .addHeader("x-sls-otel-project", "${project}")
                                .addHeader("x-sls-otel-instance-id", "${instance}")
                                .addHeader("x-sls-otel-ak-id", "${access-key-id}")
                                .addHeader("x-sls-otel-ak-secret", "${access-key-secret}").build()).build())
                .setResource(resource).build();

        OpenTelemetry openTelemetry = OpenTelemetrySdk.builder().setTracerProvider(sdkTracerProvider)
                .buildAndRegisterGlobal();

        Tracer tracer = openTelemetry.getTracer("instrumentation-library-name", "1.0.0");
        Span parentSpan = tracer.spanBuilder("parent").startSpan();

        try {
            Span childSpan = tracer.spanBuilder("child").setParent(Context.current().with(parentSpan)).startSpan();
            childSpan.setAttribute("test", "vllelel");
            childSpan.end();
        } finally {
            parentSpan.end();
        }

${youpath} menentukan jalur ke file JAR. Ganti setiap variabel ${youpath} dengan nilai sebenarnya.

java -Xbootclasspath/p:${youpath}/netty-tcnative-boringssl-static-2.0.25.Final.jar -javaagent:${youpath}/opentelemetry-javaagent-all.jar -jar ${youpath}/demo2-0.0.1-SNAPSHOT.jar