/**
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.apache.oozie.servlet;
import java.io.IOException;
import java.util.List;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import org.apache.hadoop.conf.Configuration;
import org.apache.oozie.DagEngine;
import org.apache.oozie.DagEngineException;
import org.apache.oozie.ErrorCode;
import org.apache.oozie.WorkflowJobBean;
import org.apache.oozie.WorkflowsInfo;
import org.apache.oozie.client.OozieClient;
import org.apache.oozie.client.rest.JsonTags;
import org.apache.oozie.client.rest.RestConstants;
import org.apache.oozie.service.DagEngineService;
import org.apache.oozie.service.Services;
import org.json.simple.JSONObject;
public class V0JobsServlet extends BaseJobsServlet {
private static final String INSTRUMENTATION_NAME = "v0jobs";
public V0JobsServlet() {
super(INSTRUMENTATION_NAME);
}
/**
* v0 service implementation to submit a workflow job
*/
@Override
protected JSONObject submitJob(HttpServletRequest request, Configuration conf) throws XServletException, IOException {
JSONObject json = new JSONObject();
try {
String action = request.getParameter(RestConstants.ACTION_PARAM);
if (action != null && !action.equals(RestConstants.JOB_ACTION_START)) {
throw new XServletException(HttpServletResponse.SC_BAD_REQUEST, ErrorCode.E0303, RestConstants.ACTION_PARAM, action);
}
boolean startJob = (action != null);
String user = conf.get(OozieClient.USER_NAME);
DagEngine dagEngine = Services.get().get(DagEngineService.class).getDagEngine(user, getAuthToken(request));
String id = dagEngine.submitJob(conf, startJob);
json.put(JsonTags.JOB_ID, id);
}
catch (DagEngineException ex) {
throw new XServletException(HttpServletResponse.SC_BAD_REQUEST, ex);
}
return json;
}
/**
* v0 service implementation to get a JSONObject representation of a job from its external ID
*/
@Override
protected JSONObject getJobIdForExternalId(HttpServletRequest request, String externalId) throws XServletException, IOException {
JSONObject json = new JSONObject();
try {
DagEngine dagEngine = Services.get().get(DagEngineService.class)
.getDagEngine(getUser(request), getAuthToken(request));
String jobId = dagEngine.getJobIdForExternalId(externalId);
json.put(JsonTags.JOB_ID, jobId);
}
catch (DagEngineException ex) {
throw new XServletException(HttpServletResponse.SC_BAD_REQUEST, ex);
}
return json;
}
/**
* v0 service implementation to get a list of workflows, with filtering or interested windows embedded in the
* request object
*/
@Override
protected JSONObject getJobs(HttpServletRequest request) throws XServletException, IOException {
JSONObject json = new JSONObject();
try {
String filter = request.getParameter(RestConstants.JOBS_FILTER_PARAM);
String startStr = request.getParameter(RestConstants.OFFSET_PARAM);
String lenStr = request.getParameter(RestConstants.LEN_PARAM);
int start = (startStr != null) ? Integer.parseInt(startStr) : 1;
start = (start < 1) ? 1 : start;
int len = (lenStr != null) ? Integer.parseInt(lenStr) : 50;
len = (len < 1) ? 50 : len;
DagEngine dagEngine = Services.get().get(DagEngineService.class)
.getDagEngine(getUser(request), getAuthToken(request));
WorkflowsInfo jobs = dagEngine.getJobs(filter, start, len);
List<WorkflowJobBean> jsonWorkflows = jobs.getWorkflows();
json.put(JsonTags.WORKFLOWS_JOBS, WorkflowJobBean.toJSONArray(jsonWorkflows));
json.put(JsonTags.WORKFLOWS_TOTAL, jobs.getTotal());
json.put(JsonTags.WORKFLOWS_OFFSET, jobs.getStart());
json.put(JsonTags.WORKFLOWS_LEN, jobs.getLen());
}
catch (DagEngineException ex) {
throw new XServletException(HttpServletResponse.SC_BAD_REQUEST, ex);
}
return json;
}
}