git clone https://github.com/brucewu-fly/spring-boot-opentracing-demo.git
cd spring-boot-opentracing-demo
mvn clean package
## 运行实例
export PROJECT=<your_project> ENDPOINT=<your_endpoint> ACCESS_KEY_ID=<your_access_key_id> ACCESS_KEY_SECRET=<your_access_key_secret> LOG_STORE=<your_log_store> && java -jar target/spring-boot-opentracing-demo-1.0-SNAPSHOT.jar
## 向下列 endpoint 发送请求
curl http://localhost:8080/hello
curl http://localhost:8080/chaining
该样例使用 aliyun-log-jaeger-sender 将追踪数据发往日志服务。
pom.xml 导入对 opentracing-spring-cloud， opentracing-api，aliyun-log-jaeger-sender 的依赖。
<dependency>
<groupId>io.opentracing.contrib</groupId>
<artifactId>opentracing-spring-cloud-starter</artifactId>
<version>0.1.0</version>
</dependency>
<dependency>
<groupId>io.opentracing</groupId>
<artifactId>opentracing-api</artifactId>
<version>0.31.0</version>
</dependency>
<dependency>
<groupId>com.aliyun.openservices</groupId>
<artifactId>aliyun-log-jaeger-sender</artifactId>
<version>0.0.5</version>
</dependency>
这里选择 jaeger 作为 tracing 的实现。
private AliyunLogSender buildAliyunLogSender() {
String projectName = System.getenv("PROJECT");
String logStore = System.getenv("LOG_STORE");
String endpoint = System.getenv("ENDPOINT");
String accessKeyId = System.getenv("ACCESS_KEY_ID");
String accessKey = System.getenv("ACCESS_KEY_SECRET");
return new AliyunLogSender.Builder(projectName, logStore, endpoint, accessKeyId, accessKey)
.withTopic("test_topic").build();
}
@Bean
public io.opentracing.Tracer jaegerTracer() {
AliyunLogSender aliyunLogSender = buildAliyunLogSender();
RemoteReporter remoteReporter = new RemoteReporter.Builder()
.withSender(aliyunLogSender)
.build();
return new Tracer.Builder("spring-boot-demo")
.withReporter(remoteReporter)
.withSampler(new ConstSampler(true))
.build();
}这里业务逻辑部分不需要附加任何 tracing 相关的代码，tracing 数据将会被收集。
@RestController
public class HelloController {
@Autowired
private RestTemplate restTemplate;
@RequestMapping("/hello")
public String hello() {
return "Hello from Spring Boot!";
}
@RequestMapping("/chaining")
public String chaining() {
ResponseEntity<String> response = restTemplate.getForEntity("http://localhost:8080/hello", String.class);
return "Chaining + " + response.getBody();
}
}
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