/*
* 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.oodt.cas.crawl.action;
//JDK imports
import java.io.File;
import java.util.List;
//Apache imports
import org.apache.commons.lang.Validate;
//OODT imports
import org.apache.oodt.cas.crawl.action.CrawlerAction;
import org.apache.oodt.cas.crawl.structs.exceptions.CrawlerActionException;
import org.apache.oodt.cas.metadata.Metadata;
/**
* Support of a GroupAction could go a ways to simplify command line
* specification of actions to run. Instead of having to list actions to run one
* would simply end up referencing the group. In addition, this may end up
* opening up the possibility to customize the behavior of GroupActions such as
* not continuing to run actions if one failed. Currently, the crawler continues
* executing actions even if an action fails this could be a way to tailor that
* behavior.
*
* @author pramirez (Paul Ramirez)
*/
public class GroupAction extends CrawlerAction {
private List<CrawlerAction> actionsToCall;
@Override
public boolean performAction(File product, Metadata metadata)
throws CrawlerActionException {
boolean allSucceeded = true;
for (CrawlerAction action : actionsToCall) {
try {
LOG.info("Performing action (id = " + action.getId()
+ " : description = " + action.getDescription() + ")");
if (!action.performAction(product, metadata))
throw new Exception("Action (id = " + action.getId()
+ " : description = " + action.getDescription()
+ ") returned false");
} catch (Exception e) {
allSucceeded = false;
LOG.warning("Failed to perform crawler action : " + e.getMessage());
}
}
return allSucceeded;
}
@Override
public void validate() throws CrawlerActionException {
super.validate();
try {
Validate.notNull(actionsToCall, "Must specify actionsToCall");
} catch (Exception e) {
throw new CrawlerActionException(e);
}
}
public void setActionsToCall(List<CrawlerAction> actionsToCall) {
this.actionsToCall = actionsToCall;
}
}