/*

  * 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 org.apache.giraph.benchmark;

 import org.apache.commons.cli.CommandLine;

 import org.apache.giraph.combiner.FloatSumMessageCombiner;

 import org.apache.giraph.conf.GiraphConfiguration;

 import org.apache.giraph.conf.GiraphTypes;

 import org.apache.giraph.edge.IntNullArrayEdges;

 import org.apache.giraph.graph.Language;

 import org.apache.giraph.io.formats.PseudoRandomInputFormatConstants;

 import org.apache.giraph.io.formats.PseudoRandomIntNullVertexInputFormat;

 import org.apache.giraph.scripting.DeployType;

 import org.apache.giraph.scripting.ScriptLoader;

 import org.apache.giraph.jython.JythonUtils;

 import org.apache.giraph.utils.DistributedCacheUtils;

 import org.apache.giraph.utils.ReflectionUtils;

 import org.apache.hadoop.fs.Path;

 import org.apache.hadoop.util.ToolRunner;

 import com.google.common.collect.Sets;

 import java.util.Set;

 /**

  * Benchmark for {@link PageRankComputation}

  */

 public class PageRankBenchmark extends GiraphBenchmark {

   @Override

   public Set<BenchmarkOption> getBenchmarkOptions() {

     return Sets.newHashSet(BenchmarkOption.VERTICES,

         BenchmarkOption.EDGES_PER_VERTEX, BenchmarkOption.SUPERSTEPS,

         BenchmarkOption.LOCAL_EDGES_MIN_RATIO, BenchmarkOption.JYTHON,

         BenchmarkOption.SCRIPT_PATH);

   }

   @Override

   protected void prepareConfiguration(GiraphConfiguration conf,

       CommandLine cmd) {

     if (BenchmarkOption.JYTHON.optionTurnedOn(cmd)) {

       GiraphTypes types = new GiraphTypes();

       types.inferFrom(PageRankComputation.class);

       String script;

       DeployType deployType;

       if (BenchmarkOption.SCRIPT_PATH.optionTurnedOn(cmd)) {

         deployType = DeployType.DISTRIBUTED_CACHE;

         String path = BenchmarkOption.SCRIPT_PATH.getOptionValue(cmd);

         Path hadoopPath = new Path(path);

         Path remotePath = DistributedCacheUtils.copyAndAdd(hadoopPath, conf);

         script = remotePath.toString();

       } else {

         deployType = DeployType.RESOURCE;

         script = ReflectionUtils.getPackagePath(this) + "/page-rank.py";

       }

       ScriptLoader.setScriptsToLoad(conf, script, deployType, Language.JYTHON);

       types.writeIfUnset(conf);

       JythonUtils.init(conf, "PageRank");

     } else {

       conf.setComputationClass(PageRankComputation.class);

     }

     conf.setOutEdgesClass(IntNullArrayEdges.class);

     conf.setMessageCombinerClass(FloatSumMessageCombiner.class);

     conf.setVertexInputFormatClass(

         PseudoRandomIntNullVertexInputFormat.class);

     conf.setInt(PseudoRandomInputFormatConstants.AGGREGATE_VERTICES,

         BenchmarkOption.VERTICES.getOptionIntValue(cmd));

     conf.setInt(PseudoRandomInputFormatConstants.EDGES_PER_VERTEX,

         BenchmarkOption.EDGES_PER_VERTEX.getOptionIntValue(cmd));

     conf.setInt(PageRankComputation.SUPERSTEP_COUNT,

         BenchmarkOption.SUPERSTEPS.getOptionIntValue(cmd));

     conf.setFloat(PseudoRandomInputFormatConstants.LOCAL_EDGES_MIN_RATIO,

         BenchmarkOption.LOCAL_EDGES_MIN_RATIO.getOptionFloatValue(cmd,

             PseudoRandomInputFormatConstants.LOCAL_EDGES_MIN_RATIO_DEFAULT));

   }

   /**

    * Execute the benchmark.

    *

    * @param args Typically the command line arguments.

    * @throws Exception Any exception from the computation.

    */

   public static void main(final String[] args) throws Exception {

     System.exit(ToolRunner.run(new PageRankBenchmark(), args));

   }

 }