/*
* 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.utils;
import static org.apache.giraph.conf.GiraphConstants.COMPUTATION_CLASS;
import static org.apache.giraph.conf.GiraphConstants.TYPES_HOLDER_CLASS;
import java.io.IOException;
import java.util.List;
import org.apache.commons.cli.BasicParser;
import org.apache.commons.cli.CommandLine;
import org.apache.commons.cli.CommandLineParser;
import org.apache.commons.cli.HelpFormatter;
import org.apache.commons.cli.Options;
import org.apache.commons.cli.ParseException;
import org.apache.giraph.Algorithm;
import org.apache.giraph.aggregators.AggregatorWriter;
import org.apache.giraph.combiner.MessageCombiner;
import org.apache.giraph.conf.GiraphConfiguration;
import org.apache.giraph.conf.GiraphConfigurationSettable;
import org.apache.giraph.conf.GiraphConstants;
import org.apache.giraph.conf.GiraphTypes;
import org.apache.giraph.conf.ImmutableClassesGiraphConfiguration;
import org.apache.giraph.conf.TypesHolder;
import org.apache.giraph.edge.OutEdges;
import org.apache.giraph.factories.VertexValueFactory;
import org.apache.giraph.graph.Computation;
import org.apache.giraph.graph.Language;
import org.apache.giraph.graph.VertexValueCombiner;
import org.apache.giraph.io.EdgeInputFormat;
import org.apache.giraph.io.EdgeOutputFormat;
import org.apache.giraph.io.VertexInputFormat;
import org.apache.giraph.io.VertexOutputFormat;
import org.apache.giraph.io.formats.GiraphFileInputFormat;
import org.apache.giraph.job.GiraphConfigurationValidator;
import org.apache.giraph.jython.JythonUtils;
import org.apache.giraph.master.MasterCompute;
import org.apache.giraph.partition.Partition;
import org.apache.giraph.scripting.DeployType;
import org.apache.giraph.scripting.ScriptLoader;
import org.apache.giraph.worker.WorkerContext;
import org.apache.hadoop.conf.Configuration;
import org.apache.hadoop.fs.FileSystem;
import org.apache.hadoop.fs.Path;
import org.apache.log4j.Level;
import org.apache.log4j.Logger;
import org.apache.zookeeper.ZooKeeper;
import com.google.common.base.Splitter;
import com.google.common.collect.Iterables;
/**
* Translate command line args into Configuration Key-Value pairs.
*/
public final class ConfigurationUtils {
/** Class logger */
private static final Logger LOG =
Logger.getLogger(ConfigurationUtils.class);
/*if[PURE_YARN]
// The base path for output dirs as saved in GiraphConfiguration
private static final Path BASE_OUTPUT_PATH;
static {
// whether local or remote, if there's no *-site.xml's to find, we're done
try {
BASE_OUTPUT_PATH = FileSystem.get(new Configuration()).getHomeDirectory();
} catch (IOException ioe) {
throw new IllegalStateException("Error locating default base path!", ioe);
}
}
end[PURE_YARN]*/
/** Maintains our accepted options in case the caller wants to add some */
private static Options OPTIONS;
static {
OPTIONS = new Options();
OPTIONS.addOption("h", "help", false, "Help");
OPTIONS.addOption("la", "listAlgorithms", false, "List supported " +
"algorithms");
OPTIONS.addOption("q", "quiet", false, "Quiet output");
OPTIONS.addOption("yj", "yarnjars", true, "comma-separated list of JAR " +
"filenames to distribute to Giraph tasks and ApplicationMaster. " +
"YARN only. Search order: CLASSPATH, HADOOP_HOME, user current dir.");
OPTIONS.addOption("yh", "yarnheap", true, "Heap size, in MB, for each " +
"Giraph task (YARN only.) Defaults to " +
GiraphConstants.GIRAPH_YARN_TASK_HEAP_MB + " MB.");
OPTIONS.addOption("w", "workers", true, "Number of workers");
OPTIONS.addOption("vif", "vertexInputFormat", true, "Vertex input format");
OPTIONS.addOption("eif", "edgeInputFormat", true, "Edge input format");
OPTIONS.addOption("vof", "vertexOutputFormat", true,
"Vertex output format");
OPTIONS.addOption("eof", "edgeOutputFormat", true, "Edge output format");
OPTIONS.addOption("vip", "vertexInputPath", true, "Vertex input path");
OPTIONS.addOption("eip", "edgeInputPath", true, "Edge input path");
OPTIONS.addOption("op", "outputPath", true, "Output path");
OPTIONS.addOption("vsd", "vertexSubDir", true, "subdirectory to be used " +
"for the vertex output");
OPTIONS.addOption("esd", "edgeSubDir", true, "subdirectory to be used " +
"for the edge output");
OPTIONS.addOption("c", "combiner", true, "MessageCombiner class");
OPTIONS.addOption("ve", "outEdges", true, "Vertex edges class");
OPTIONS.addOption("wc", "workerContext", true, "WorkerContext class");
OPTIONS.addOption("aw", "aggregatorWriter", true, "AggregatorWriter class");
OPTIONS.addOption("mc", "masterCompute", true, "MasterCompute class");
OPTIONS.addOption("cf", "cacheFile", true, "Files for distributed cache");
OPTIONS.addOption("pc", "partitionClass", true, "Partition class");
OPTIONS.addOption("vvf", "vertexValueFactoryClass", true,
"Vertex value factory class");
OPTIONS.addOption("th", "typesHolder", true,
"Class that holds types. Needed only if Computation is not set");
OPTIONS.addOption("jyc", "jythonClass", true,
"Jython class name, used if computation passed in is a python script");
OPTIONS.addOption("ca", "customArguments", true, "provide custom" +
" arguments for the job configuration in the form:" +
" -ca <param1>=<value1>,<param2>=<value2> -ca <param3>=<value3> etc." +
" It can appear multiple times, and the last one has effect" +
" for the same param.");
}
/**
* No constructing this utility class
*/
private ConfigurationUtils() { }
/**
* Configure an object with an
* {@link org.apache.giraph.conf.ImmutableClassesGiraphConfiguration}
* if that objects supports it.
*
* @param object The object to configure
* @param configuration The configuration
*/
public static void configureIfPossible(Object object,
ImmutableClassesGiraphConfiguration configuration) {
if (configuration != null) {
configuration.configureIfPossible(object);
} else if (object instanceof GiraphConfigurationSettable) {
throw new IllegalArgumentException(
"Trying to configure configurable object without value, " +
object.getClass());
}
}
/**
* Get a class which is parameterized by the graph types defined by user.
* The types holder is actually an interface that any class which holds all of
* Giraph types can implement. It is used with reflection to infer the Giraph
* types.
*
* The current order of type holders we try are:
* 1) The {@link TypesHolder} class directly.
* 2) The {@link Computation} class, as that holds all the types.
*
* @param conf Configuration
* @return {@link TypesHolder} or null if could not find one.
*/
public static Class<? extends TypesHolder> getTypesHolderClass(
Configuration conf) {
Class<? extends TypesHolder> klass = TYPES_HOLDER_CLASS.get(conf);
if (klass != null) {
return klass;
}
klass = COMPUTATION_CLASS.get(conf);
return klass;
}
/**
* Translate CLI arguments to GiraphRunner or 'bin/hadoop jar' into
* Configuration Key-Value pairs.
* @param giraphConf the current job Configuration.
* @param args the raw CLI args to parse
* @return a CommandLine object, or null if the job run should exit.
*/
public static CommandLine parseArgs(final GiraphConfiguration giraphConf,
final String[] args) throws ClassNotFoundException, ParseException,
IOException {
// verify we have args at all (can't run without them!)
if (args.length == 0) {
throw new IllegalArgumentException("No arguments were provided (try -h)");
}
CommandLineParser parser = new BasicParser();
CommandLine cmd = parser.parse(OPTIONS, args);
// simply printing help or info, return normally but kill job run
if (cmd.hasOption("h")) {
printHelp();
return null;
}
if (cmd.hasOption("la")) {
printSupportedAlgorithms();
return null;
}
// Be certain that there are no critical args missing, die if so.
performSanityCheck(cmd);
// Args are OK; attempt to populate the GiraphConfiguration with them.
final String computationClassName = args[0];
final int workers = Integer.parseInt(cmd.getOptionValue('w'));
populateGiraphConfiguration(giraphConf, cmd, computationClassName, workers);
// validate generic parameters chosen are correct or
// throw IllegalArgumentException, halting execution.
@SuppressWarnings("rawtypes")
GiraphConfigurationValidator<?, ?, ?, ?, ?> gtv =
new GiraphConfigurationValidator(giraphConf);
gtv.validateConfiguration();
// successfully populated/validated GiraphConfiguration, ready to run job
return cmd;
}
/**
* Callers can place additional options to be parsed and stored in our job's
* GiraphConfiguration via this utility call. These options will ONLY be
* parsed and placed into the CommandLine returned from <code>parseArgs</code>
* Calling code must query this CommandLine to take action on these options.
* @param opt short options name, i.e. -h
* @param longOpt long option name, i.e. --help
* @param hasArg should we expect an argument for this option?
* @param description English description of this option.
*/
public static void addOption(final String opt, final String longOpt,
final boolean hasArg, final String description) {
if (OPTIONS.hasOption(opt)) {
printHelp();
throw new IllegalArgumentException("GiraphConfiguration already " +
"provides a '" + opt + "' option, please choose another identifier.");
}
OPTIONS.addOption(opt, longOpt, hasArg, description);
}
/**
* Utility to check mission-critical args are populated. The validity of
* the values provided in these args is checked elsewhere.
* @param cmd our parsed CommandLine
*/
private static void performSanityCheck(final CommandLine cmd) {
// Verify all the required options have been provided
if (!cmd.hasOption("w")) {
throw new IllegalArgumentException("Need to choose the " +
"number of workers (-w)");
}
if (!cmd.hasOption("vif") && !cmd.hasOption("eif")) {
throw new IllegalArgumentException("Need to set an input " +
"format (-vif or -eif)");
}
}
/**
* Populate GiraphConfiguration for this job with all cmd line args found.
* Any global configuration data that Giraph on any platform might need
* should be captured here.
*
* @param conf config for this job run
* @param cmd parsed command line options to store in conf
* @param computationClassName the computation class (application) to run in
* this job.
* @param workers the number of worker tasks for this job run.
*/
private static void populateGiraphConfiguration(final GiraphConfiguration
conf, final CommandLine cmd,
final String computationClassName, final int workers)
throws ClassNotFoundException, IOException {
conf.setWorkerConfiguration(workers, workers, 100.0f);
if (cmd.hasOption("typesHolder")) {
Class<? extends TypesHolder> typesHolderClass =
(Class<? extends TypesHolder>)
Class.forName(cmd.getOptionValue("typesHolder"));
TYPES_HOLDER_CLASS.set(conf, typesHolderClass);
}
if (cmd.hasOption("c")) {
conf.setMessageCombinerClass(
(Class<? extends MessageCombiner>)
Class.forName(cmd.getOptionValue("c")));
}
if (cmd.hasOption("vc")) {
conf.setVertexValueCombinerClass(
(Class<? extends VertexValueCombiner>)
Class.forName(cmd.getOptionValue("vc")));
}
if (cmd.hasOption("ve")) {
conf.setOutEdgesClass(
(Class<? extends OutEdges>) Class.forName(cmd.getOptionValue("ve")));
}
if (cmd.hasOption("ive")) {
conf.setInputOutEdgesClass(
(Class<? extends OutEdges>) Class.forName(cmd.getOptionValue("ive")));
}
if (cmd.hasOption("wc")) {
conf.setWorkerContextClass(
(Class<? extends WorkerContext>) Class
.forName(cmd.getOptionValue("wc")));
}
if (cmd.hasOption("mc")) {
conf.setMasterComputeClass(
(Class<? extends MasterCompute>) Class
.forName(cmd.getOptionValue("mc")));
}
if (cmd.hasOption("aw")) {
conf.setAggregatorWriterClass(
(Class<? extends AggregatorWriter>) Class
.forName(cmd.getOptionValue("aw")));
}
if (cmd.hasOption("vif")) {
conf.setVertexInputFormatClass(
(Class<? extends VertexInputFormat>) Class
.forName(cmd.getOptionValue("vif")));
} else {
if (LOG.isInfoEnabled()) {
LOG.info("No vertex input format specified. Ensure your " +
"InputFormat does not require one.");
}
}
if (cmd.hasOption("eif")) {
conf.setEdgeInputFormatClass(
(Class<? extends EdgeInputFormat>) Class
.forName(cmd.getOptionValue("eif")));
} else {
if (LOG.isInfoEnabled()) {
LOG.info("No edge input format specified. Ensure your " +
"InputFormat does not require one.");
}
}
if (cmd.hasOption("vof")) {
conf.setVertexOutputFormatClass(
(Class<? extends VertexOutputFormat>) Class
.forName(cmd.getOptionValue("vof")));
} else {
if (LOG.isInfoEnabled()) {
LOG.info("No vertex output format specified. Ensure your " +
"OutputFormat does not require one.");
}
}
if (cmd.hasOption("vof")) {
if (cmd.hasOption("vsd")) {
conf.setVertexOutputFormatSubdir(cmd.getOptionValue("vsd"));
}
}
if (cmd.hasOption("eof")) {
conf.setEdgeOutputFormatClass(
(Class<? extends EdgeOutputFormat>) Class
.forName(cmd.getOptionValue("eof")));
} else {
if (LOG.isInfoEnabled()) {
LOG.info("No edge output format specified. Ensure your " +
"OutputFormat does not require one.");
}
}
if (cmd.hasOption("eof")) {
if (cmd.hasOption("esd")) {
conf.setEdgeOutputFormatSubdir(cmd.getOptionValue("esd"));
}
}
/* check for path clashes */
if (cmd.hasOption("vof") && cmd.hasOption("eof") && cmd.hasOption("op")) {
if (!cmd.hasOption("vsd") || cmd.hasOption("esd")) {
if (!conf.hasEdgeOutputFormatSubdir() ||
!conf.hasVertexOutputFormatSubdir()) {
throw new IllegalArgumentException("If VertexOutputFormat and " +
"EdgeOutputFormat are both set, it is mandatory to provide " +
"both vertex subdirectory as well as edge subdirectory");
}
}
}
if (cmd.hasOption("pc")) {
conf.setPartitionClass(
(Class<? extends Partition>) Class.forName(cmd.getOptionValue("pc")));
}
if (cmd.hasOption("vvf")) {
conf.setVertexValueFactoryClass(
(Class<? extends VertexValueFactory>) Class
.forName(cmd.getOptionValue("vvf")));
}
if (cmd.hasOption("ca")) {
for (String caOptionValue : cmd.getOptionValues("ca")) {
for (String paramValue :
Splitter.on(',').split(caOptionValue)) {
String[] parts = Iterables.toArray(Splitter.on('=').split(paramValue),
String.class);
if (parts.length != 2) {
throw new IllegalArgumentException("Unable to parse custom " +
" argument: " + paramValue);
}
if (LOG.isInfoEnabled()) {
LOG.info("Setting custom argument [" + parts[0] + "] to [" +
parts[1] + "] in GiraphConfiguration");
}
conf.set(parts[0], parts[1]);
}
}
}
// Now, we parse options that are specific to Hadoop MR Job
if (cmd.hasOption("vif")) {
if (cmd.hasOption("vip")) {
if (FileSystem.get(new Configuration()).listStatus(
new Path(cmd.getOptionValue("vip"))) == null) {
throw new IllegalArgumentException(
"Invalid vertex input path (-vip): " +
cmd.getOptionValue("vip"));
}
GiraphFileInputFormat.addVertexInputPath(conf,
new Path(cmd.getOptionValue("vip")));
} else {
if (LOG.isInfoEnabled()) {
LOG.info("No input path for vertex data was specified. Ensure your " +
"InputFormat does not require one.");
}
}
}
if (cmd.hasOption("eif")) {
if (cmd.hasOption("eip")) {
if (FileSystem.get(new Configuration()).listStatus(
new Path(cmd.getOptionValue("eip"))) == null) {
throw new IllegalArgumentException(
"Invalid edge input path (-eip): " +
cmd.getOptionValue("eip"));
}
GiraphFileInputFormat.addEdgeInputPath(conf,
new Path(cmd.getOptionValue("eip")));
} else {
if (LOG.isInfoEnabled()) {
LOG.info("No input path for edge data was specified. Ensure your " +
"InputFormat does not require one.");
}
}
}
// YARN-ONLY OPTIONS
if (cmd.hasOption("yj")) {
conf.setYarnLibJars(cmd.getOptionValue("yj"));
}
if (cmd.hasOption("yh")) {
conf.setYarnTaskHeapMb(
Integer.parseInt(cmd.getOptionValue("yh")));
}
/*if[PURE_YARN]
if (cmd.hasOption("vof") || cmd.hasOption("eof")) {
if (cmd.hasOption("op")) {
// For YARN conf to get the out dir we need w/o a Job obj
Path outputDir =
new Path(BASE_OUTPUT_PATH, cmd.getOptionValue("op"));
outputDir =
outputDir.getFileSystem(conf).makeQualified(outputDir);
conf.set(
org.apache.hadoop.mapreduce.lib.output.FileOutputFormat.OUTDIR,
outputDir.toString());
} else {
if (LOG.isInfoEnabled()) {
LOG.info("No output path specified. Ensure your OutputFormat " +
"does not require one.");
}
}
}
end[PURE_YARN]*/
// END YARN-ONLY OPTIONS
handleComputationClass(conf, cmd, computationClassName);
}
/**
* Helper to deal with computation class.
*
* @param conf Configuration
* @param cmd CommandLine
* @param computationClassName Name of computation
* @throws ClassNotFoundException error finding class
*/
private static void handleComputationClass(GiraphConfiguration conf,
CommandLine cmd, String computationClassName)
throws ClassNotFoundException {
if (computationClassName.endsWith("py")) {
handleJythonComputation(conf, cmd, computationClassName);
} else {
conf.setComputationClass(
(Class<? extends Computation>) Class.forName(computationClassName));
}
}
/**
* Helper to handle Computations implemented in Python.
*
* @param conf Configuration
* @param cmd CommandLine
* @param scriptPath Path to python script
*/
private static void handleJythonComputation(GiraphConfiguration conf,
CommandLine cmd, String scriptPath) {
String jythonClass = cmd.getOptionValue("jythonClass");
if (jythonClass == null) {
throw new IllegalArgumentException(
"handleJythonComputation: Need to set Jython Computation class " +
"name with --jythonClass");
}
String typesHolderClass = cmd.getOptionValue("typesHolder");
if (typesHolderClass == null) {
throw new IllegalArgumentException(
"handleJythonComputation: Need to set TypesHolder class name " +
"with --typesHolder");
}
Path path = new Path(scriptPath);
Path remotePath = DistributedCacheUtils.copyAndAdd(path, conf);
ScriptLoader.setScriptsToLoad(conf, remotePath.toString(),
DeployType.DISTRIBUTED_CACHE, Language.JYTHON);
GiraphTypes.readFrom(conf).writeIfUnset(conf);
JythonUtils.init(conf, jythonClass);
}
/**
* Utility to print CLI help messsage for registered options.
*/
private static void printHelp() {
HelpFormatter formatter = new HelpFormatter();
formatter.printHelp(ConfigurationUtils.class.getName(), OPTIONS, true);
}
/**
* Prints description of algorithms annotated with
* {@link org.apache.giraph.Algorithm}
*/
private static void printSupportedAlgorithms() {
Logger.getLogger(ZooKeeper.class).setLevel(Level.OFF);
List<Class<?>> classes = AnnotationUtils.getAnnotatedClasses(
Algorithm.class, "org.apache.giraph");
System.out.print(" Supported algorithms:\n");
for (Class<?> clazz : classes) {
if (Computation.class.isAssignableFrom(clazz)) {
Algorithm algorithm = clazz.getAnnotation(Algorithm.class);
StringBuilder sb = new StringBuilder();
sb.append(algorithm.name()).append(" - ").append(clazz.getName())
.append("\n");
if (!algorithm.description().equals("")) {
sb.append(" ").append(algorithm.description()).append("\n");
}
System.out.print(sb.toString());
}
}
}
}