/**
* 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.command.wf;
import java.io.IOException;
import java.net.URI;
import java.net.URISyntaxException;
import java.util.Collection;
import java.util.HashMap;
import java.util.HashSet;
import java.util.List;
import java.util.Map;
import java.util.Set;
import org.apache.hadoop.conf.Configuration;
import org.apache.hadoop.fs.FileSystem;
import org.apache.hadoop.fs.Path;
import org.apache.oozie.ErrorCode;
import org.apache.oozie.WorkflowActionBean;
import org.apache.oozie.WorkflowJobBean;
import org.apache.oozie.client.OozieClient;
import org.apache.oozie.client.WorkflowAction;
import org.apache.oozie.client.WorkflowJob;
import org.apache.oozie.command.CommandException;
import org.apache.oozie.command.PreconditionException;
import org.apache.oozie.executor.jpa.JPAExecutorException;
import org.apache.oozie.executor.jpa.WorkflowActionDeleteJPAExecutor;
import org.apache.oozie.executor.jpa.WorkflowActionsGetForJobJPAExecutor;
import org.apache.oozie.executor.jpa.WorkflowJobGetJPAExecutor;
import org.apache.oozie.executor.jpa.WorkflowJobUpdateJPAExecutor;
import org.apache.oozie.service.DagXLogInfoService;
import org.apache.oozie.service.HadoopAccessorException;
import org.apache.oozie.service.HadoopAccessorService;
import org.apache.oozie.service.JPAService;
import org.apache.oozie.service.Services;
import org.apache.oozie.service.WorkflowAppService;
import org.apache.oozie.service.WorkflowStoreService;
import org.apache.oozie.util.InstrumentUtils;
import org.apache.oozie.util.LogUtils;
import org.apache.oozie.util.ParamChecker;
import org.apache.oozie.util.PropertiesUtils;
import org.apache.oozie.util.XConfiguration;
import org.apache.oozie.util.XLog;
import org.apache.oozie.util.XmlUtils;
import org.apache.oozie.workflow.WorkflowApp;
import org.apache.oozie.workflow.WorkflowException;
import org.apache.oozie.workflow.WorkflowInstance;
import org.apache.oozie.workflow.WorkflowLib;
import org.apache.oozie.workflow.lite.NodeHandler;
/**
* This is a RerunXCommand which is used for rerunn.
*
*/
public class ReRunXCommand extends WorkflowXCommand<Void> {
private final String jobId;
private final Configuration conf;
private final String authToken;
private final Set<String> nodesToSkip = new HashSet<String>();
public static final String TO_SKIP = "TO_SKIP";
private WorkflowJobBean wfBean;
private List<WorkflowActionBean> actions;
private JPAService jpaService;
private static final Set<String> DISALLOWED_DEFAULT_PROPERTIES = new HashSet<String>();
private static final Set<String> DISALLOWED_USER_PROPERTIES = new HashSet<String>();
static {
String[] badUserProps = { PropertiesUtils.DAYS, PropertiesUtils.HOURS, PropertiesUtils.MINUTES,
PropertiesUtils.KB, PropertiesUtils.MB, PropertiesUtils.GB, PropertiesUtils.TB, PropertiesUtils.PB,
PropertiesUtils.RECORDS, PropertiesUtils.MAP_IN, PropertiesUtils.MAP_OUT, PropertiesUtils.REDUCE_IN,
PropertiesUtils.REDUCE_OUT, PropertiesUtils.GROUPS };
PropertiesUtils.createPropertySet(badUserProps, DISALLOWED_USER_PROPERTIES);
String[] badDefaultProps = { PropertiesUtils.HADOOP_USER, PropertiesUtils.HADOOP_UGI,
WorkflowAppService.HADOOP_JT_KERBEROS_NAME, WorkflowAppService.HADOOP_NN_KERBEROS_NAME };
PropertiesUtils.createPropertySet(badUserProps, DISALLOWED_DEFAULT_PROPERTIES);
PropertiesUtils.createPropertySet(badDefaultProps, DISALLOWED_DEFAULT_PROPERTIES);
}
public ReRunXCommand(String jobId, Configuration conf, String authToken) {
super("rerun", "rerun", 1);
this.jobId = ParamChecker.notEmpty(jobId, "jobId");
this.conf = ParamChecker.notNull(conf, "conf");
this.authToken = ParamChecker.notEmpty(authToken, "authToken");
}
/* (non-Javadoc)
* @see org.apache.oozie.command.XCommand#execute()
*/
@Override
protected Void execute() throws CommandException {
InstrumentUtils.incrJobCounter(getName(), 1, getInstrumentation());
LogUtils.setLogInfo(wfBean, logInfo);
WorkflowInstance oldWfInstance = this.wfBean.getWorkflowInstance();
WorkflowInstance newWfInstance;
WorkflowAppService wps = Services.get().get(WorkflowAppService.class);
try {
XLog.Info.get().setParameter(DagXLogInfoService.TOKEN, conf.get(OozieClient.LOG_TOKEN));
WorkflowApp app = wps.parseDef(conf, authToken);
XConfiguration protoActionConf = wps.createProtoActionConf(conf, authToken, true);
WorkflowLib workflowLib = Services.get().get(WorkflowStoreService.class).getWorkflowLibWithNoDB();
URI uri = new URI(conf.get(OozieClient.APP_PATH));
FileSystem fs = Services.get().get(HadoopAccessorService.class).createFileSystem(wfBean.getUser(),
wfBean.getGroup(), uri, new Configuration());
Path configDefault = null;
// app path could be a directory
Path path = new Path(uri.getPath());
if (!fs.isFile(path)) {
configDefault = new Path(path, SubmitCommand.CONFIG_DEFAULT);
} else {
configDefault = new Path(path.getParent(), SubmitCommand.CONFIG_DEFAULT);
}
if (fs.exists(configDefault)) {
Configuration defaultConf = new XConfiguration(fs.open(configDefault));
PropertiesUtils.checkDisallowedProperties(defaultConf, DISALLOWED_DEFAULT_PROPERTIES);
XConfiguration.injectDefaults(defaultConf, conf);
}
PropertiesUtils.checkDisallowedProperties(conf, DISALLOWED_USER_PROPERTIES);
try {
newWfInstance = workflowLib.createInstance(app, conf, jobId);
}
catch (WorkflowException e) {
throw new CommandException(e);
}
wfBean.setAppName(app.getName());
wfBean.setProtoActionConf(protoActionConf.toXmlString());
}
catch (WorkflowException ex) {
throw new CommandException(ex);
}
catch (IOException ex) {
throw new CommandException(ErrorCode.E0803, ex);
}
catch (HadoopAccessorException ex) {
throw new CommandException(ex);
}
catch (URISyntaxException ex) {
throw new CommandException(ErrorCode.E0711, ex.getMessage(), ex);
}
try {
for (int i = 0; i < actions.size(); i++) {
if (!nodesToSkip.contains(actions.get(i).getName())) {
jpaService.execute(new WorkflowActionDeleteJPAExecutor(actions.get(i).getId()));
LOG.info("Deleting Action[{0}] for re-run", actions.get(i).getId());
}
else {
copyActionData(newWfInstance, oldWfInstance);
}
}
wfBean.setAppPath(conf.get(OozieClient.APP_PATH));
wfBean.setConf(XmlUtils.prettyPrint(conf).toString());
wfBean.setLogToken(conf.get(OozieClient.LOG_TOKEN, ""));
wfBean.setUser(conf.get(OozieClient.USER_NAME));
wfBean.setGroup(conf.get(OozieClient.GROUP_NAME));
wfBean.setExternalId(conf.get(OozieClient.EXTERNAL_ID));
wfBean.setEndTime(null);
wfBean.setRun(wfBean.getRun() + 1);
wfBean.setStatus(WorkflowJob.Status.PREP);
wfBean.setWorkflowInstance(newWfInstance);
jpaService.execute(new WorkflowJobUpdateJPAExecutor(wfBean));
}
catch (JPAExecutorException e) {
throw new CommandException(e);
}
return null;
}
/**
* Loading the Wfjob and workflow actions. Parses the config and adds the nodes that are to be skipped to the
* skipped node list
*
* @throws CommandException
*/
@Override
protected void eagerLoadState() throws CommandException {
super.eagerLoadState();
try {
jpaService = Services.get().get(JPAService.class);
if (jpaService != null) {
this.wfBean = jpaService.execute(new WorkflowJobGetJPAExecutor(this.jobId));
this.actions = jpaService.execute(new WorkflowActionsGetForJobJPAExecutor(this.jobId));
}
else {
throw new CommandException(ErrorCode.E0610);
}
if (conf != null) {
if (conf.getBoolean(OozieClient.RERUN_FAIL_NODES, false) == false) { //Rerun with skipNodes
Collection<String> skipNodes = conf.getStringCollection(OozieClient.RERUN_SKIP_NODES);
for (String str : skipNodes) {
// trimming is required
nodesToSkip.add(str.trim());
}
LOG.debug("Skipnode size :" + nodesToSkip.size());
}
else {
for (WorkflowActionBean action : actions) { // Rerun from failed nodes
if (action.getStatus() == WorkflowAction.Status.OK) {
nodesToSkip.add(action.getName());
}
}
LOG.debug("Skipnode size are to rerun from FAIL nodes :" + nodesToSkip.size());
}
StringBuilder tmp = new StringBuilder();
for (String node : nodesToSkip) {
tmp.append(node).append(",");
}
LOG.debug("SkipNode List :" + tmp);
}
}
catch (Exception ex) {
throw new CommandException(ErrorCode.E0603, ex);
}
}
/**
* Checks the pre-conditions that are required for workflow to recover - Last run of Workflow should be completed -
* The nodes that are to be skipped are to be completed successfully in the base run.
*
* @throws org.apache.oozie.command.CommandException,PreconditionException On failure of pre-conditions
*/
@Override
protected void eagerVerifyPrecondition() throws CommandException, PreconditionException {
super.eagerVerifyPrecondition();
if (!(wfBean.getStatus().equals(WorkflowJob.Status.FAILED)
|| wfBean.getStatus().equals(WorkflowJob.Status.KILLED) || wfBean.getStatus().equals(
WorkflowJob.Status.SUCCEEDED))) {
throw new CommandException(ErrorCode.E0805, wfBean.getStatus());
}
Set<String> unmachedNodes = new HashSet<String>(nodesToSkip);
for (WorkflowActionBean action : actions) {
if (nodesToSkip.contains(action.getName())) {
if (!action.getStatus().equals(WorkflowAction.Status.OK)
&& !action.getStatus().equals(WorkflowAction.Status.ERROR)) {
throw new CommandException(ErrorCode.E0806, action.getName());
}
unmachedNodes.remove(action.getName());
}
}
if (unmachedNodes.size() > 0) {
StringBuilder sb = new StringBuilder();
String separator = "";
for (String s : unmachedNodes) {
sb.append(separator).append(s);
separator = ",";
}
throw new CommandException(ErrorCode.E0807, sb);
}
}
/**
* Copys the variables for skipped nodes from the old wfInstance to new one.
*
* @param newWfInstance : Source WF instance object
* @param oldWfInstance : Update WF instance
*/
private void copyActionData(WorkflowInstance newWfInstance, WorkflowInstance oldWfInstance) {
Map<String, String> oldVars = new HashMap<String, String>();
Map<String, String> newVars = new HashMap<String, String>();
oldVars = oldWfInstance.getAllVars();
for (String var : oldVars.keySet()) {
String actionName = var.split(WorkflowInstance.NODE_VAR_SEPARATOR)[0];
if (nodesToSkip.contains(actionName)) {
newVars.put(var, oldVars.get(var));
}
}
for (String node : nodesToSkip) {
// Setting the TO_SKIP variable to true. This will be used by
// SignalCommand and LiteNodeHandler to skip the action.
newVars.put(node + WorkflowInstance.NODE_VAR_SEPARATOR + TO_SKIP, "true");
String visitedFlag = NodeHandler.getLoopFlag(node);
// Removing the visited flag so that the action won't be considered
// a loop.
if (newVars.containsKey(visitedFlag)) {
newVars.remove(visitedFlag);
}
}
newWfInstance.setAllVars(newVars);
}
/* (non-Javadoc)
* @see org.apache.oozie.command.XCommand#getEntityKey()
*/
@Override
protected String getEntityKey() {
return this.jobId;
}
/* (non-Javadoc)
* @see org.apache.oozie.command.XCommand#isLockRequired()
*/
@Override
protected boolean isLockRequired() {
return true;
}
/* (non-Javadoc)
* @see org.apache.oozie.command.XCommand#loadState()
*/
@Override
protected void loadState() throws CommandException {
}
/* (non-Javadoc)
* @see org.apache.oozie.command.XCommand#verifyPrecondition()
*/
@Override
protected void verifyPrecondition() throws CommandException, PreconditionException {
}
}