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kevinmdaviskevinmdavis
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Add sample for calling Stackdriver Trace API
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‎samples/stackdriver-trace-api/pom.xml‎

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<?xml version="1.0" encoding="UTF-8"?>
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<project xmlns="http://maven.apache.org/POM/4.0.0"
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xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
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xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
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<parent>
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<artifactId>samples</artifactId>
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<groupId>com.google.cloud.trace</groupId>
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<version>0.2.3-SNAPSHOT</version>
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</parent>
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<modelVersion>4.0.0</modelVersion>
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<artifactId>stackdriver-trace-api</artifactId>
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<name>Google Cloud Trace Java SDK Stackdriver Trace API example</name>
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<dependencies>
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<dependency>
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<groupId>${project.groupId}</groupId>
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<artifactId>trace-grpc-api-service</artifactId>
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<version>${project.version}</version>
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</dependency>
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<dependency>
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<groupId>${project.groupId}</groupId>
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<artifactId>core</artifactId>
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<version>${project.version}</version>
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</dependency>
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<dependency>
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<groupId>com.google.auth</groupId>
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<artifactId>google-auth-library-oauth2-http</artifactId>
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<version>0.4.0</version>
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</dependency>
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<dependency>
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<groupId>io.grpc</groupId>
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<artifactId>grpc-netty</artifactId>
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<version>1.0.1</version>
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</dependency>
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<dependency>
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<groupId>io.netty</groupId>
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<artifactId>netty-tcnative-boringssl-static</artifactId>
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<version>1.1.33.Fork23</version>
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</dependency>
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</dependencies>
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</project>

‎samples/stackdriver-trace-api/src/main/java/com/google/cloud/trace/samples/stackdriver/api/StackdriverTraceApi.java‎

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package com.google.cloud.trace.samples.stackdriver.api;
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import com.google.auth.oauth2.GoogleCredentials;
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import com.google.cloud.trace.Trace;
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import com.google.cloud.trace.Tracer;
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import com.google.cloud.trace.core.TraceContext;
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import com.google.cloud.trace.service.TraceGrpcApiService;
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import com.google.cloud.trace.service.TraceService;
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import java.io.FileInputStream;
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import java.io.IOException;
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public class StackdriverTraceApi {
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public static void main(String[] args) throws IOException {
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// Initialize the Tracer.
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TraceService traceService = TraceGrpcApiService.builder()
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// Set the projectId.
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.setProjectId("my-project-id")
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// Uncomment this if you want to provide your own credentials for the Stackdriver Trace API.
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// On GCE, this is optional because the Application Default Credentials are used by default.
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//.setCredentials(
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// GoogleCredentials.fromStream(new FileInputStream("/path/to/my/credentials.json")))
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// Use a short delay of 1 second for this example. In production, you may want to use a
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// higher value so that more trace events are batched together in a single request to the
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// Stackdriver Trace API. By default, the delay is 15 seconds.
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.setScheduledDelay(1)
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.build();
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Trace.init(traceService);
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Tracer tracer = Trace.getTracer();
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TraceContext context = tracer.startSpan("test-span");
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tracer.endSpan(context);
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}
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}

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