Added REST API wrapper for inspecting and cancelling Batch2 jobs

src/main/java/ca/uhn/fhir/jpa/starter/controllers/JobController.java

@@ -0,0 +1,48 @@
+package ca.uhn.fhir.jpa.starter.controllers;
+
+
+import ca.uhn.fhir.batch2.api.IJobCoordinator;
+import ca.uhn.fhir.batch2.api.JobOperationResultJson;
+import ca.uhn.fhir.batch2.model.JobInstance;
+import ca.uhn.fhir.batch2.model.StatusEnum;
+import ca.uhn.fhir.batch2.models.JobInstanceFetchRequest;
+import org.springframework.data.domain.Sort;
+import org.springframework.http.MediaType;
+import org.springframework.web.bind.annotation.*;
+
+import javax.validation.constraints.Min;
+import java.util.List;
+
+@RestController
+@RequestMapping("control")
+public class JobController {
+
+	public static final String JOBS = "jobs";
+	public static final String MY_CREATE_TIME = "myCreateTime";
+	private final IJobCoordinator theJobCoordinator;
+
+	public JobController(IJobCoordinator theJobCoordinator) {
+		this.theJobCoordinator = theJobCoordinator;
+	}
+
+	@RequestMapping(value = JOBS, method = RequestMethod.GET, produces = MediaType.APPLICATION_JSON_VALUE)
+	public List<JobInstance> getAllJobs(
+		@RequestParam(name = "pageStart") @Min(0) Integer pageStart,
+		@RequestParam(name = "batchSize") Integer batchSize,
+		@RequestParam(name = "jobStatus", required = false) StatusEnum jobStatus) {
+
+		var jobInstanceFetchRequest = new JobInstanceFetchRequest();
+		jobInstanceFetchRequest.setPageStart(pageStart);
+		jobInstanceFetchRequest.setBatchSize(batchSize);
+		if (jobStatus == null) jobInstanceFetchRequest.setJobStatus("");
+		else jobInstanceFetchRequest.setJobStatus(jobStatus.toString());
+		jobInstanceFetchRequest.setSort(Sort.by(Sort.Direction.DESC, MY_CREATE_TIME));
+
+		return theJobCoordinator.fetchAllJobInstances(jobInstanceFetchRequest).getContent();
+	}
+
+	@RequestMapping(value = JOBS, method = RequestMethod.DELETE, produces = MediaType.APPLICATION_JSON_VALUE)
+	public JobOperationResultJson cancelInstance(@RequestParam(name = "instanceId") String instanceId) {
+		return theJobCoordinator.cancelInstance(instanceId);
+	}
+}