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/**
* Copyright (c) 2010 Yahoo! Inc. All rights reserved.
* Licensed 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. See accompanying LICENSE file.
*/
package org.apache.oozie;
import java.util.Collections;
import java.util.Iterator;
import java.util.List;
import java.util.Properties;
import org.apache.oozie.client.OozieClient;
import org.apache.oozie.client.OozieClientException;
import org.apache.oozie.client.WorkflowJob;
import org.apache.oozie.util.XConfiguration;
/**
* Client API to submit and manage Oozie workflow jobs against an Oozie intance. This class is thread safe.
* Syntax for filter for the {@link #getJobsInfo(String)} {@link #getJobsInfo(String, int, int)} methods:
* [NAME=VALUE][;NAME=VALUE]*. Valid filter names are:
name: the workflow application
* name from the workflow definition. user: the user that submitted the job. group: the group for the
* job. status: the status of the job. The query will do an AND among all the filter names. The
* query will do an OR among all the filter values for the same name. Multiple values must be specified as different
* name value pairs.
*/
public class LocalOozieClient extends OozieClient {
private DagEngine dagEngine;
/**
* Create a workflow client for Oozie local use.
*
* @param dagEngine the dag engine instance to use.
*/
public LocalOozieClient(DagEngine dagEngine) {
this.dagEngine = dagEngine;
}
/**
* Return the Oozie URL of the workflow client instance. This URL is the base URL fo the Oozie system, with not
* protocol versioning.
*
* @return the Oozie URL of the workflow client instance.
*/
@Override
public String getOozieUrl() {
return "localoozie";
}
/**
* Return the Oozie URL used by the client and server for WS communications. This URL is the original URL plus
* the versioning element path.
*
* @return the Oozie URL used by the client and server for communication.
* @throws org.apache.oozie.client.OozieClientException thrown in the client and the server are not protocol
* compatible.
*/
@Override
public String getProtocolUrl() throws OozieClientException {
return "localoozie";
}
/**
* Validate that the Oozie client and server instances are protocol compatible.
*
* @throws org.apache.oozie.client.OozieClientException thrown in the client and the server are not protocol
* compatible.
*/
@Override
public synchronized void validateWSVersion() throws OozieClientException {
}
/**
* Create an empty configuration with just the {@link #USER_NAME} set to the JVM user name and the {@link
* #GROUP_NAME} set to 'other'.
*
* @return an empty configuration.
*/
@Override
public Properties createConfiguration() {
Properties conf = new Properties();
if (dagEngine != null) {
conf.setProperty(USER_NAME, dagEngine.getUser());
}
conf.setProperty(GROUP_NAME, "users");
return conf;
}
/**
* Set a HTTP header to be used in the WS requests by the workflow instance.
*
* @param name header name.
* @param value header value.
*/
@Override
public void setHeader(String name, String value) {
}
/**
* Get the value of a set HTTP header from the workflow instance.
*
* @param name header name.
* @return header value, null if not set.
*/
@Override
public String getHeader(String name) {
return null;
}
/**
* Remove a HTTP header from the workflow client instance.
*
* @param name header name.
*/
@Override
public void removeHeader(String name) {
}
/**
* Return an iterator with all the header names set in the workflow instance.
*
* @return header names.
*/
@Override
@SuppressWarnings("unchecked")
public Iterator getHeaderNames() {
return Collections.EMPTY_SET.iterator();
}
/**
* Submit a workflow job.
*
* @param conf job configuration.
* @return the job Id.
* @throws org.apache.oozie.client.OozieClientException thrown if the job could not be submitted.
*/
@Override
public String submit(Properties conf) throws OozieClientException {
try {
return dagEngine.submitJob(new XConfiguration(conf), false);
}
catch (DagEngineException ex) {
throw new OozieClientException(ex.getErrorCode().toString(), ex);
}
}
/**
* Start a workflow job.
*
* @param jobId job Id.
* @throws org.apache.oozie.client.OozieClientException thrown if the job could not be started.
*/
@Override
public void start(String jobId) throws OozieClientException {
try {
dagEngine.start(jobId);
}
catch (DagEngineException ex) {
throw new OozieClientException(ex.getErrorCode().toString(), ex);
}
}
/**
* Submit and start a workflow job.
*
* @param conf job configuration.
* @return the job Id.
* @throws org.apache.oozie.client.OozieClientException thrown if the job could not be submitted.
*/
@Override
public String run(Properties conf) throws OozieClientException {
try {
return dagEngine.submitJob(new XConfiguration(conf), true);
}
catch (DagEngineException ex) {
throw new OozieClientException(ex.getErrorCode().toString(), ex);
}
}
/**
* Rerun a workflow job.
*
* @param jobId job Id to rerun.
* @param conf configuration information for the rerun.
* @throws org.apache.oozie.client.OozieClientException thrown if the job could not be started.
*/
@Override
public void reRun(String jobId, Properties conf) throws OozieClientException {
try {
dagEngine.reRun(jobId, new XConfiguration(conf));
}
catch (DagEngineException ex) {
throw new OozieClientException(ex.getErrorCode().toString(), ex);
}
}
/**
* Suspend a workflow job.
*
* @param jobId job Id.
* @throws org.apache.oozie.client.OozieClientException thrown if the job could not be suspended.
*/
@Override
public void suspend(String jobId) throws OozieClientException {
try {
dagEngine.suspend(jobId);
}
catch (DagEngineException ex) {
throw new OozieClientException(ex.getErrorCode().toString(), ex);
}
}
/**
* Resume a workflow job.
*
* @param jobId job Id.
* @throws org.apache.oozie.client.OozieClientException thrown if the job could not be resume.
*/
@Override
public void resume(String jobId) throws OozieClientException {
try {
dagEngine.resume(jobId);
}
catch (DagEngineException ex) {
throw new OozieClientException(ex.getErrorCode().toString(), ex);
}
}
/**
* Kill a workflow job.
*
* @param jobId job Id.
* @throws org.apache.oozie.client.OozieClientException thrown if the job could not be killed.
*/
@Override
public void kill(String jobId) throws OozieClientException {
try {
dagEngine.kill(jobId);
}
catch (DagEngineException ex) {
throw new OozieClientException(ex.getErrorCode().toString(), ex);
}
}
/**
* Get the info of a workflow job.
*
* @param jobId job Id.
* @return the job info.
* @throws org.apache.oozie.client.OozieClientException thrown if the job info could not be retrieved.
*/
@Override
public WorkflowJob getJobInfo(String jobId) throws OozieClientException {
try {
return dagEngine.getJob(jobId);
}
catch (DagEngineException ex) {
throw new OozieClientException(ex.getErrorCode().toString(), ex);
}
}
/**
* Return the info of the workflow jobs that match the filter.
*
* @param filter job filter. Refer to the {@link LocalOozieClient} for the filter syntax.
* @param start jobs offset, base 1.
* @param len number of jobs to return.
* @return a list with the workflow jobs info, without node details.
* @throws org.apache.oozie.client.OozieClientException thrown if the jobs info could not be retrieved.
*/
@Override
public List getJobsInfo(String filter, int start, int len) throws OozieClientException {
try {
return (List) dagEngine.getJobs(filter, start, len).getWorkflows();
}
catch (DagEngineException ex) {
throw new OozieClientException(ex.getErrorCode().toString(), ex);
}
}
/**
* Return the info of the workflow jobs that match the filter. It returns the first 100 jobs that match the
* filter.
*
* @param filter job filter. Refer to the {@link LocalOozieClient} for the filter syntax.
* @return a list with the workflow jobs info, without node details.
* @throws org.apache.oozie.client.OozieClientException thrown if the jobs info could not be retrieved.
*/
@Override
public List getJobsInfo(String filter) throws OozieClientException {
return getJobsInfo(filter, 1, 100);
}
/**
* Return the workflow job Id for an external Id. The external Id must have provided at job creation time.
*
* @param externalId external Id given at job creation time.
* @return the workflow job Id for an external Id, null if none.
* @throws org.apache.oozie.client.OozieClientException thrown if the operation could not be done.
*/
@Override
public String getJobId(String externalId) throws OozieClientException {
try {
return dagEngine.getJobIdForExternalId(externalId);
}
catch (DagEngineException ex) {
throw new OozieClientException(ex.getErrorCode().toString(), ex);
}
}
/**
* Returns if Oozie is in safe mode or not.
*
* @return true if safe mode is ON
false if safe mode is OFF
* @throws org.apache.oozie.client.OozieClientException throw if it could not obtain the safe mode status.
*/
/*public SYSTEM_MODE isInSafeMode() throws OozieClientException {
//return Services.get().isSafeMode();
return Services.get().getSystemMode() ;
}*/
}
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