perf.PerfUtils.java Source code

Introduction

Here is the source code for perf.PerfUtils.java

Source

package perf;

/**
 * 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.
 */

// TODO
//  - be able to quickly run a/b tests again
//  - absorb nrt, pklokup, search, indexing into one tool?
//  - switch to named cmd line args
//  - get pk lookup working w/ remote tasks

import java.io.IOException;
import java.util.Collections;
import java.util.List;
import java.util.Map;

import org.apache.lucene.index.DirectoryReader;
import org.apache.lucene.index.IndexCommit;
import org.apache.lucene.store.Directory;

public class PerfUtils {

    public static IndexCommit findCommitPoint(String commit, Directory dir) throws IOException {
        List<IndexCommit> commits = DirectoryReader.listCommits(dir);
        Collections.reverse(commits);

        for (final IndexCommit ic : commits) {
            Map<String, String> map = ic.getUserData();
            String ud = null;
            if (map != null) {
                ud = map.get("userData");
                System.out.println("found commit=" + ud);
                if (ud != null && ud.equals(commit)) {
                    return ic;
                }
            }
        }
        throw new RuntimeException("could not find commit '" + commit + "'");
    }

    public static long usedMemory(Runtime runtime) {
        return runtime.totalMemory() - runtime.freeMemory();
    }

}