org.apache.blur.manager.writer.BlurIndex.java Source code

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Here is the source code for org.apache.blur.manager.writer.BlurIndex.java

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package org.apache.blur.manager.writer;

/**
 * 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.
 */
import java.io.IOException;
import java.util.List;
import java.util.Timer;
import java.util.concurrent.ExecutorService;
import java.util.concurrent.TimeUnit;
import java.util.concurrent.atomic.AtomicBoolean;

import org.apache.blur.lucene.search.IndexSearcherCloseable;
import org.apache.blur.server.ShardContext;
import org.apache.blur.server.cache.ThriftCache;
import org.apache.blur.thrift.generated.RowMutation;
import org.apache.blur.utils.BlurUtil;
import org.apache.lucene.index.IndexReader;
import org.apache.lucene.index.IndexReaderContext;
import org.apache.lucene.search.TermQuery;
import org.apache.lucene.search.TopDocs;
import org.apache.lucene.store.Directory;

public abstract class BlurIndex {

    private static final long ONE_MINUTE = TimeUnit.MINUTES.toMillis(1);
    private long _lastMemoryCheck = 0;
    private long _memoryUsage = 0;
    protected ShardContext _shardContext;

    public BlurIndex(ShardContext shardContext, Directory directory, SharedMergeScheduler mergeScheduler,
            ExecutorService searchExecutor, BlurIndexCloser indexCloser, Timer indexImporterTimer,
            Timer bulkIndexingTimer, ThriftCache thriftCache) throws IOException {
        _shardContext = shardContext;
    }

    public abstract IndexSearcherCloseable getIndexSearcher() throws IOException;

    public abstract void close() throws IOException;

    public abstract void refresh() throws IOException;

    public abstract AtomicBoolean isClosed();

    public abstract void optimize(int numberOfSegmentsPerShard) throws IOException;

    public abstract void createSnapshot(String name) throws IOException;

    public abstract void removeSnapshot(String name) throws IOException;

    public abstract List<String> getSnapshots() throws IOException;

    public long getRecordCount() throws IOException {
        IndexSearcherCloseable searcher = getIndexSearcher();
        try {
            return searcher.getIndexReader().numDocs();
        } finally {
            if (searcher != null) {
                searcher.close();
            }
        }
    }

    public long getRowCount() throws IOException {
        IndexSearcherCloseable searcher = getIndexSearcher();
        try {
            return getRowCount(searcher);
        } finally {
            if (searcher != null) {
                searcher.close();
            }
        }
    }

    protected long getRowCount(IndexSearcherCloseable searcher) throws IOException {
        TopDocs topDocs = searcher.search(new TermQuery(BlurUtil.PRIME_DOC_TERM), 1);
        return topDocs.totalHits;
    }

    public long getIndexMemoryUsage() throws IOException {
        return 0;
        // long now = System.currentTimeMillis();
        // if (_lastMemoryCheck + ONE_MINUTE > now) {
        // return _memoryUsage;
        // }
        // IndexSearcherClosable searcher = getIndexReader();
        // try {
        // IndexReaderContext topReaderContext = searcher.getTopReaderContext();
        // return _memoryUsage = RamUsageEstimator.sizeOf(topReaderContext, new
        // ClassNameFilter() {
        // @Override
        // public boolean include(String className) {
        // if (className.startsWith("org.apache.blur.index.ExitableReader")) {
        // return true;
        // } else if (className.startsWith("org.apache.blur.")) {
        // // System.out.println("className [" + className + "]");
        // return false;
        // }
        // return true;
        // }
        // });
        // } finally {
        // searcher.close();
        // _lastMemoryCheck = System.currentTimeMillis();
        // }
    }

    public long getSegmentCount() throws IOException {
        IndexSearcherCloseable indexSearcherClosable = getIndexSearcher();
        try {
            IndexReader indexReader = indexSearcherClosable.getIndexReader();
            IndexReaderContext context = indexReader.getContext();
            return context.leaves().size();
        } finally {
            indexSearcherClosable.close();
        }
    }

    public ShardContext getShardContext() {
        return _shardContext;
    }

    public abstract void process(IndexAction indexAction) throws IOException;

    public abstract void enqueue(List<RowMutation> mutations) throws IOException;

    public abstract void finishBulkMutate(String bulkId, boolean apply, boolean blockUntilComplete)
            throws IOException;

    public abstract void addBulkMutate(String bulkId, RowMutation mutation) throws IOException;

    public abstract long getSegmentImportPendingCount() throws IOException;

    public abstract long getSegmentImportInProgressCount() throws IOException;

    public abstract long getOnDiskSize() throws IOException;

}