com.gemstone.gemfire.cache.lucene.internal.directory.DumpDirectoryFiles.java Source code

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Here is the source code for com.gemstone.gemfire.cache.lucene.internal.directory.DumpDirectoryFiles.java

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/*
 * 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 com.gemstone.gemfire.cache.lucene.internal.directory;

import java.io.File;
import java.io.IOException;
import java.util.ArrayList;
import java.util.Collection;

import com.gemstone.gemfire.cache.Region;
import com.gemstone.gemfire.cache.execute.Function;
import com.gemstone.gemfire.cache.execute.FunctionAdapter;
import com.gemstone.gemfire.cache.execute.FunctionContext;
import com.gemstone.gemfire.cache.execute.FunctionException;
import com.gemstone.gemfire.cache.execute.RegionFunctionContext;
import com.gemstone.gemfire.cache.execute.ResultSender;
import com.gemstone.gemfire.cache.lucene.LuceneQueryProvider;
import com.gemstone.gemfire.cache.lucene.LuceneService;
import com.gemstone.gemfire.cache.lucene.LuceneServiceProvider;
import com.gemstone.gemfire.cache.lucene.internal.InternalLuceneIndex;
import com.gemstone.gemfire.cache.lucene.internal.LuceneServiceImpl;
import com.gemstone.gemfire.cache.lucene.internal.distributed.CollectorManager;
import com.gemstone.gemfire.cache.lucene.internal.distributed.LuceneFunctionContext;
import com.gemstone.gemfire.cache.lucene.internal.distributed.TopEntriesCollector;
import com.gemstone.gemfire.cache.lucene.internal.distributed.TopEntriesCollectorManager;
import com.gemstone.gemfire.cache.lucene.internal.filesystem.FileSystem;
import com.gemstone.gemfire.cache.lucene.internal.repository.IndexRepository;
import com.gemstone.gemfire.cache.lucene.internal.repository.IndexRepositoryImpl;
import com.gemstone.gemfire.cache.lucene.internal.repository.IndexResultCollector;
import com.gemstone.gemfire.cache.lucene.internal.repository.RepositoryManager;
import com.gemstone.gemfire.cache.query.QueryException;
import com.gemstone.gemfire.internal.InternalEntity;
import com.gemstone.gemfire.internal.cache.BucketNotFoundException;
import com.gemstone.gemfire.internal.logging.LogService;

import org.apache.logging.log4j.Logger;
import org.apache.lucene.index.IndexWriter;
import org.apache.lucene.search.Query;
import org.apache.lucene.store.Directory;

public class DumpDirectoryFiles implements Function, InternalEntity {
    private static final long serialVersionUID = 1L;

    private static final Logger logger = LogService.getLogger();
    public static final String ID = DumpDirectoryFiles.class.getSimpleName();

    @Override
    public void execute(FunctionContext context) {
        RegionFunctionContext ctx = (RegionFunctionContext) context;

        if (!(context.getArguments() instanceof String[])) {
            throw new IllegalArgumentException("Arguments should be a string array");
        }
        String[] args = (String[]) context.getArguments();
        if (args.length != 2) {
            throw new IllegalArgumentException("Expected 2 arguments: exportLocation, indexName");
        }

        String exportLocation = args[0];
        String indexName = args[1];

        final Region<Object, Object> region = ctx.getDataSet();
        LuceneService service = LuceneServiceProvider.get(ctx.getDataSet().getCache());
        InternalLuceneIndex index = (InternalLuceneIndex) service.getIndex(indexName, region.getFullPath());
        if (index == null) {
            throw new IllegalStateException("Index not found for region " + region + " index " + indexName);
        }

        final RepositoryManager repoManager = index.getRepositoryManager();
        try {
            final Collection<IndexRepository> repositories = repoManager.getRepositories(ctx);
            repositories.stream().forEach(repo -> {
                final IndexWriter writer = repo.getWriter();
                RegionDirectory directory = (RegionDirectory) writer.getDirectory();
                FileSystem fs = directory.getFileSystem();

                String bucketName = index.getName() + "_" + repo.getRegion().getFullPath();
                bucketName = bucketName.replace("/", "_");
                File bucketDirectory = new File(exportLocation, bucketName);
                bucketDirectory.mkdirs();
                fs.export(bucketDirectory);
            });
            context.getResultSender().lastResult(null);
        } catch (BucketNotFoundException e) {
            throw new FunctionException(e);
        }
    }

    @Override
    public String getId() {
        return ID;
    }

    @Override
    public boolean optimizeForWrite() {
        return true;
    }
}