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Partition balance analysis tool for more than two zones.
- Started a directory for all of our tools (src/java/voldemort/tools) - PartitionBalance : - broke this util out of ClusterInstance to make it more self-contained - this changed the declaration of a lot of the methods that invoked analyzeBalance and analyzeBalanceVerbose - ClusterInstanceTest : Added a bunch of tests to confirm that partition balance can be constructed (or not) for combinations of 2 & 3 zones
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| /* | ||
| * Copyright 2012-2013 LinkedIn, Inc | ||
| * | ||
| * 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. | ||
| */ | ||
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|
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| package voldemort.tools; | ||
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| import java.io.File; | ||
| import java.io.IOException; | ||
| import java.util.List; | ||
| import java.util.Set; | ||
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| import joptsimple.OptionException; | ||
| import joptsimple.OptionParser; | ||
| import joptsimple.OptionSet; | ||
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| import org.apache.log4j.Logger; | ||
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| import voldemort.cluster.Cluster; | ||
| import voldemort.store.StoreDefinition; | ||
| import voldemort.utils.ClusterInstance; | ||
| import voldemort.utils.CmdUtils; | ||
| import voldemort.utils.PartitionBalance; | ||
| import voldemort.utils.Utils; | ||
| import voldemort.xml.ClusterMapper; | ||
| import voldemort.xml.StoreDefinitionsMapper; | ||
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| import com.google.common.base.Joiner; | ||
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| public class PartitionAnalysisCLI { | ||
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| private final static Logger logger = Logger.getLogger(PartitionAnalysisCLI.class); | ||
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| private static OptionParser parser; | ||
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| private static void setupParser() { | ||
| parser = new OptionParser(); | ||
| parser.accepts("help", "Print usage information"); | ||
| parser.accepts("cluster", "Path to cluster xml") | ||
| .withRequiredArg() | ||
| .describedAs("cluster.xml"); | ||
| parser.accepts("stores", "Path to store definition xml") | ||
| .withRequiredArg() | ||
| .describedAs("stores.xml"); | ||
| } | ||
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| private static void printUsage() { | ||
| StringBuilder help = new StringBuilder(); | ||
| help.append("PartitionAnalysisCLI\n"); | ||
| help.append(" Analyzes the partition layout of a cluster based on the storage " | ||
| + "definitions for that cluster. Determines how well balanced the " | ||
| + "partition layout is.\n"); | ||
| help.append("Options:\n"); | ||
| help.append(" Required:\n"); | ||
| help.append(" --cluster <clusterXML>\n"); | ||
| help.append(" --stores <storesXML>\n"); | ||
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| try { | ||
| parser.printHelpOn(System.out); | ||
| } catch(IOException e) { | ||
| e.printStackTrace(); | ||
| } | ||
| System.out.print(help.toString()); | ||
| } | ||
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| private static void printUsageAndDie(String errMessage) { | ||
| printUsage(); | ||
| Utils.croak("\n" + errMessage); | ||
| } | ||
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| private static OptionSet getValidOptions(String[] args) { | ||
| OptionSet options = null; | ||
| try { | ||
| options = parser.parse(args); | ||
| } catch(OptionException oe) { | ||
| printUsageAndDie("Exception when parsing arguments : " + oe.getMessage()); | ||
| } | ||
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| if(options.has("help")) { | ||
| printUsage(); | ||
| System.exit(0); | ||
| } | ||
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| Set<String> missing = CmdUtils.missing(options, "cluster", "stores"); | ||
| if(missing.size() > 0) { | ||
| printUsageAndDie("Missing required arguments: " + Joiner.on(", ").join(missing)); | ||
| } | ||
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| return options; | ||
| } | ||
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| public static void main(String[] args) throws Exception { | ||
| setupParser(); | ||
| OptionSet options = getValidOptions(args); | ||
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| String clusterXML = (String) options.valueOf("cluster"); | ||
| String storesXML = (String) options.valueOf("stores"); | ||
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| Cluster currentCluster = new ClusterMapper().readCluster(new File(clusterXML)); | ||
| List<StoreDefinition> storeDefs = new StoreDefinitionsMapper().readStoreList(new File(storesXML)); | ||
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| PartitionBalance partitionBalance = new ClusterInstance(currentCluster, storeDefs).getPartitionBalance(); | ||
| System.out.println(partitionBalance); | ||
| } | ||
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| } |
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