要在Spring Boot中監控Flink作業的狀態,你需要使用Flink的REST API來獲取作業的信息
首先,確保你已經在本地或者遠程服務器上啟動了一個Flink集群。
在你的Spring Boot項目中,添加以下依賴:
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
</dependency>
import org.springframework.http.HttpEntity;
import org.springframework.http.HttpHeaders;
import org.springframework.http.HttpMethod;
import org.springframework.http.ResponseEntity;
import org.springframework.web.client.RestTemplate;
public class FlinkRestClient {
private final String flinkJobManagerUrl;
public FlinkRestClient(String flinkJobManagerUrl) {
this.flinkJobManagerUrl = flinkJobManagerUrl;
}
public JobsResponse getJobs() {
RestTemplate restTemplate = new RestTemplate();
HttpHeaders headers = new HttpHeaders();
HttpEntity<String> entity = new HttpEntity<>(headers);
ResponseEntity<JobsResponse> response = restTemplate.exchange(flinkJobManagerUrl + "/jobs", HttpMethod.GET, entity, JobsResponse.class);
return response.getBody();
}
}
import java.util.List;
public class JobsResponse {
private List<Job> jobs;
public List<Job> getJobs() {
return jobs;
}
public void setJobs(List<Job> jobs) {
this.jobs = jobs;
}
}
class Job {
private String id;
private String status;
// Getters and setters
}
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RestController;
@RestController
public class FlinkJobController {
@Autowired
private FlinkRestClient flinkRestClient;
@GetMapping("/jobs")
public JobsResponse getJobs() {
return flinkRestClient.getJobs();
}
}
application.properties
文件中,配置Flink JobManager的URL:flink.job-manager.url=http://localhost:8081
現在,當你運行你的Spring Boot應用并訪問/jobs
端點時,你將看到Flink作業的狀態。你可以根據需要擴展這個示例,以便監控其他指標,例如作業的輸入/輸出速率、任務管理器的狀態等。