io.druid.segment.loading.LocalDataSegmentKiller.java Source code

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Here is the source code for io.druid.segment.loading.LocalDataSegmentKiller.java

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/*
 * Licensed to Metamarkets Group Inc. (Metamarkets) under one
 * or more contributor license agreements. See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership. Metamarkets 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 io.druid.segment.loading;

import com.google.inject.Inject;
import io.druid.java.util.common.MapUtils;
import io.druid.java.util.common.logger.Logger;
import io.druid.timeline.DataSegment;
import org.apache.commons.io.FileUtils;

import java.io.File;
import java.io.IOException;

/**
 */
public class LocalDataSegmentKiller implements DataSegmentKiller {
    private static final Logger log = new Logger(LocalDataSegmentKiller.class);

    private static final String PATH_KEY = "path";

    private final File storageDirectory;

    @Inject
    public LocalDataSegmentKiller(LocalDataSegmentPusherConfig config) {
        this.storageDirectory = config.getStorageDirectory();
    }

    @Override
    public void kill(DataSegment segment) throws SegmentLoadingException {
        final File path = getPath(segment);
        log.info("killing segment[%s] mapped to path[%s]", segment.getIdentifier(), path);

        try {
            if (path.getName().endsWith(".zip")) {

                // path format -- > .../dataSource/interval/version/partitionNum/xxx.zip
                File partitionNumDir = path.getParentFile();
                FileUtils.deleteDirectory(partitionNumDir);

                //try to delete other directories if possible
                File versionDir = partitionNumDir.getParentFile();
                if (versionDir.delete()) {
                    File intervalDir = versionDir.getParentFile();
                    if (intervalDir.delete()) {
                        File dataSourceDir = intervalDir.getParentFile();
                        dataSourceDir.delete();
                    }
                }
            } else {
                throw new SegmentLoadingException("Unknown file type[%s]", path);
            }
        } catch (IOException e) {
            throw new SegmentLoadingException(e, "Unable to kill segment");
        }
    }

    @Override
    public void killAll() throws IOException {
        log.info("Deleting all segment files from local dir [%s].", storageDirectory.getAbsolutePath());
        FileUtils.deleteDirectory(storageDirectory);
    }

    private File getPath(DataSegment segment) throws SegmentLoadingException {
        return new File(MapUtils.getString(segment.getLoadSpec(), PATH_KEY));
    }
}