common/src/main/java/org/apache/falcon/cleanup/FeedCleanupHandler.java

/**
 * 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.falcon.cleanup;

import org.apache.falcon.FalconException;
import org.apache.falcon.entity.v0.EntityType;
import org.apache.falcon.entity.v0.feed.Feed;

import java.util.Collection;

/**
 * Cleanup files relating to feed management workflows.
 */
public class FeedCleanupHandler extends AbstractCleanupHandler {

    @Override
    public void cleanup() throws FalconException {
        Collection<String> feeds = STORE.getEntities(EntityType.FEED);
        for (String feedName : feeds) {
            Feed feed = STORE.get(EntityType.FEED, feedName);
            long retention = getRetention(feed, feed.getFrequency().getTimeUnit());

            for (org.apache.falcon.entity.v0.feed.Cluster cluster : feed.getClusters().getClusters()) {
                delete(cluster.getName(), feed, retention);
            }
        }
    }

    @Override
    protected String getRelativeLogPath() {
        return "job-*/*/*";
    }
}