/*
* Copyright 2016 Ben Manes. All Rights Reserved.
*
* Licensed 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.github.benmanes.caffeine.cache.simulator.parser.umass.network;
import java.io.IOException;
import java.util.List;
import java.util.stream.LongStream;
import com.github.benmanes.caffeine.cache.simulator.parser.TextTraceReader;
import com.google.common.hash.Hashing;
/**
* A reader for the trace files provided by the
* <a href="http://traces.cs.umass.edu/index.php/Network/Network">UMass Trace Repository</a>.
*
* @author ben.manes@gmail.com (Ben Manes)
*/
public final class YoutubeTraceReader extends TextTraceReader {
public YoutubeTraceReader(List<String> filePaths) {
super(filePaths);
}
@Override
public LongStream events() throws IOException {
return lines()
.map(line -> line.split(" "))
.filter(array -> array[3].equals("GETVIDEO"))
.mapToLong(array -> Hashing.murmur3_128().hashUnencodedChars(array[4]).asLong());
}
}