Java tutorial
/* * Apache License * Version 2.0, January 2004 * http://www.apache.org/licenses/ * * TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION * * 1. Definitions. * * "License" shall mean the terms and conditions for use, reproduction, and * distribution as defined by Sections 1 through 9 of this document. * * "Licensor" shall mean the copyright owner or entity authorized by the copyright * owner that is granting the License. * * "Legal Entity" shall mean the union of the acting entity and all other entities * that control, are controlled by, or are under common control with that entity. * For the purposes of this definition, "control" means (i) the power, direct or * indirect, to cause the direction or management of such entity, whether by * contract or otherwise, or (ii) ownership of fifty percent (50%) or more of the * outstanding shares, or (iii) beneficial ownership of such entity. * * "You" (or "Your") shall mean an individual or Legal Entity exercising * permissions granted by this License. * * "Source" form shall mean the preferred form for making modifications, including * but not limited to software source code, documentation source, and configuration * files. * * "Object" form shall mean any form resulting from mechanical transformation or * translation of a Source form, including but not limited to compiled object code, * generated documentation, and conversions to other media types. * * "Work" shall mean the work of authorship, whether in Source or Object form, made * available under the License, as indicated by a copyright notice that is included * in or attached to the work (an example is provided in the Appendix below). * * "Derivative Works" shall mean any work, whether in Source or Object form, that * is based on (or derived from) the Work and for which the editorial revisions, * annotations, elaborations, or other modifications represent, as a whole, an * original work of authorship. For the purposes of this License, Derivative Works * shall not include works that remain separable from, or merely link (or bind by * name) to the interfaces of, the Work and Derivative Works thereof. * * "Contribution" shall mean any work of authorship, including the original version * of the Work and any modifications or additions to that Work or Derivative Works * thereof, that is intentionally submitted to Licensor for inclusion in the Work * by the copyright owner or by an individual or Legal Entity authorized to submit * on behalf of the copyright owner. For the purposes of this definition, * "submitted" means any form of electronic, verbal, or written communication sent * to the Licensor or its representatives, including but not limited to * communication on electronic mailing lists, source code control systems, and * issue tracking systems that are managed by, or on behalf of, the Licensor for * the purpose of discussing and improving the Work, but excluding communication * that is conspicuously marked or otherwise designated in writing by the copyright * owner as "Not a Contribution." * * "Contributor" shall mean Licensor and any individual or Legal Entity on behalf * of whom a Contribution has been received by Licensor and subsequently * incorporated within the Work. * * 2. Grant of Copyright License. * * Subject to the terms and conditions of this License, each Contributor hereby * grants to You a perpetual, worldwide, non-exclusive, no-charge, royalty-free, * irrevocable copyright license to reproduce, prepare Derivative Works of, * publicly display, publicly perform, sublicense, and distribute the Work and such * Derivative Works in Source or Object form. * * 3. Grant of Patent License. * * Subject to the terms and conditions of this License, each Contributor hereby * grants to You a perpetual, worldwide, non-exclusive, no-charge, royalty-free, * irrevocable (except as stated in this section) patent license to make, have * made, use, offer to sell, sell, import, and otherwise transfer the Work, where * such license applies only to those patent claims licensable by such Contributor * that are necessarily infringed by their Contribution(s) alone or by combination * of their Contribution(s) with the Work to which such Contribution(s) was * submitted. If You institute patent litigation against any entity (including a * cross-claim or counterclaim in a lawsuit) alleging that the Work or a * Contribution incorporated within the Work constitutes direct or contributory * patent infringement, then any patent licenses granted to You under this License * for that Work shall terminate as of the date such litigation is filed. * * 4. Redistribution. * * You may reproduce and distribute copies of the Work or Derivative Works thereof * in any medium, with or without modifications, and in Source or Object form, * provided that You meet the following conditions: * * You must give any other recipients of the Work or Derivative Works a copy of * this License; and * You must cause any modified files to carry prominent notices stating that You * changed the files; and * You must retain, in the Source form of any Derivative Works that You distribute, * all copyright, patent, trademark, and attribution notices from the Source form * of the Work, excluding those notices that do not pertain to any part of the * Derivative Works; and * If the Work includes a "NOTICE" text file as part of its distribution, then any * Derivative Works that You distribute must include a readable copy of the * attribution notices contained within such NOTICE file, excluding those notices * that do not pertain to any part of the Derivative Works, in at least one of the * following places: within a NOTICE text file distributed as part of the * Derivative Works; within the Source form or documentation, if provided along * with the Derivative Works; or, within a display generated by the Derivative * Works, if and wherever such third-party notices normally appear. The contents of * the NOTICE file are for informational purposes only and do not modify the * License. You may add Your own attribution notices within Derivative Works that * You distribute, alongside or as an addendum to the NOTICE text from the Work, * provided that such additional attribution notices cannot be construed as * modifying the License. * You may add Your own copyright statement to Your modifications and may provide * additional or different license terms and conditions for use, reproduction, or * distribution of Your modifications, or for any such Derivative Works as a whole, * provided Your use, reproduction, and distribution of the Work otherwise complies * with the conditions stated in this License. * * 5. Submission of Contributions. * * Unless You explicitly state otherwise, any Contribution intentionally submitted * for inclusion in the Work by You to the Licensor shall be under the terms and * conditions of this License, without any additional terms or conditions. * Notwithstanding the above, nothing herein shall supersede or modify the terms of * any separate license agreement you may have executed with Licensor regarding * such Contributions. * * 6. Trademarks. * * This License does not grant permission to use the trade names, trademarks, * service marks, or product names of the Licensor, except as required for * reasonable and customary use in describing the origin of the Work and * reproducing the content of the NOTICE file. * * 7. Disclaimer of Warranty. * * Unless required by applicable law or agreed to in writing, Licensor provides the * Work (and each Contributor provides its Contributions) on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied, * including, without limitation, any warranties or conditions of TITLE, * NON-INFRINGEMENT, MERCHANTABILITY, or FITNESS FOR A PARTICULAR PURPOSE. You are * solely responsible for determining the appropriateness of using or * redistributing the Work and assume any risks associated with Your exercise of * permissions under this License. * * 8. Limitation of Liability. * * In no event and under no legal theory, whether in tort (including negligence), * contract, or otherwise, unless required by applicable law (such as deliberate * and grossly negligent acts) or agreed to in writing, shall any Contributor be * liable to You for damages, including any direct, indirect, special, incidental, * or consequential damages of any character arising as a result of this License or * out of the use or inability to use the Work (including but not limited to * damages for loss of goodwill, work stoppage, computer failure or malfunction, or * any and all other commercial damages or losses), even if such Contributor has * been advised of the possibility of such damages. * * 9. Accepting Warranty or Additional Liability. * * While redistributing the Work or Derivative Works thereof, You may choose to * offer, and charge a fee for, acceptance of support, warranty, indemnity, or * other liability obligations and/or rights consistent with this License. However, * in accepting such obligations, You may act only on Your own behalf and on Your * sole responsibility, not on behalf of any other Contributor, and only if You * agree to indemnify, defend, and hold each Contributor harmless for any liability * incurred by, or claims asserted against, such Contributor by reason of your * accepting any such warranty or additional liability. * * END OF TERMS AND CONDITIONS * * APPENDIX: How to apply the Apache License to your work * * To apply the Apache License to your work, attach the following boilerplate * notice, with the fields enclosed by brackets "[]" replaced with your own * identifying information. (Don't include the brackets!) The text should be * enclosed in the appropriate comment syntax for the file format. We also * recommend that a file or class name and description of purpose be included on * the same "printed page" as the copyright notice for easier identification within * third-party archives. * * Copyright (c)[2013][Keith Bishop] * * 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.ultratechnica.mongodb; import com.mongodb.*; import org.apache.commons.cli.*; import org.slf4j.Logger; import org.slf4j.LoggerFactory; import java.net.UnknownHostException; import java.util.Date; /** * Created with IntelliJ IDEA. * User: keithbishop * Date: 06/09/2013 * Time: 13:01 */ public class Main { private static final Logger log = LoggerFactory.getLogger(Main.class); private static final String DEFAULT_COLLECTION_NAME = "test"; private static final String DEFAULT_HOST = "localhost"; private static final String DEFAULT_PORT = "27017"; public static void main(String[] args) { log.info("=============================================================================================\n" + " _ _ _ \n" + " |\\/| _ ._ _ _ | \\ |_) |_) _ ._ _ |_ \n" + " | | (_) | | (_| (_) |_/ |_) |_) (/_ | | (_ | | \n" + " _| \n" + "Copyright 2013 Keith Bishop, Ultratechnica Ltd, http://ultratechnica.com\n" + "Licensed to Apache " + "=============================================================================================\n"); Options options = getOptions(); CommandLine commandLine = parseArgs(args, options); MongoClient client = null; if (commandLine.hasOption("host") && commandLine.hasOption("port")) { String host = commandLine.getOptionValue("host"); String port = commandLine.getOptionValue("port"); try { client = new MongoClient(host, Integer.parseInt(port)); } catch (UnknownHostException e) { log.error("Unable to connect to host [{}] on port [{}]", host, port); } } else if (options.hasOption("host")) { String host = commandLine.getOptionValue("host"); try { client = new MongoClient(host); } catch (UnknownHostException e) { log.error("Unable to connect to host [{}] on default port ()", host); } } else { try { client = new MongoClient(); } catch (UnknownHostException e) { log.error("Unable to connect default host ({}) on default port ()", DEFAULT_HOST, DEFAULT_PORT); } } if (client == null) { System.out.println("Exiting, due to previous connection errors"); System.exit(1); } ServerAddress clientAddress = client.getAddress(); log.info("Connected to MongoDB [{}]", clientAddress); MongoClientOptions mongoClientOptions = client.getMongoClientOptions(); log.info("=============================================================================================\n" + "Using Mongo Client options:\n" + "\tConnections per host: " + mongoClientOptions.getConnectionsPerHost() + "\n" + "\tConect timeout: " + mongoClientOptions.getConnectTimeout() + " \n" + "\tSocket timeout: " + mongoClientOptions.getSocketTimeout() + "\n" + "\tMax Wait time: " + mongoClientOptions.getMaxWaitTime() + "\n" + "\tMax Auto connect retry time: " + mongoClientOptions.getMaxAutoConnectRetryTime() + "\n" + "\tMax threads allowed to block for conneciton multipler: " + mongoClientOptions.getThreadsAllowedToBlockForConnectionMultiplier() + "\n" + "\tWrite concern: " + mongoClientOptions.getWriteConcern() + "\n" + "\tRead Preference: " + mongoClientOptions.getReadPreference() + "\n" + "=============================================================================================\n"); String items = commandLine.getOptionValue("n"); int numberOfItems = 0; try { numberOfItems = Integer.parseInt(items); } catch (NumberFormatException e) { log.error("The parameter provided for -n was not an integer [{}]", items); System.exit(1); } DB local = client.getDB("local"); DBCollection collection = local.getCollection(DEFAULT_COLLECTION_NAME); log.info("Starting benchmark, inserting [{}] items into collection [{}]", numberOfItems, DEFAULT_COLLECTION_NAME); long startTime = System.currentTimeMillis(); for (int i = 0; i < numberOfItems; i++) { BasicDBObjectBuilder builder = BasicDBObjectBuilder.start().add("timestamp", new Date()) .add("field1", "123456").add("field2", "2345678") .add("field3", "123123231313131232131231231231123132123123123").add("field4", true); WriteResult result = collection.insert(builder.get()); if (!result.getLastError().ok()) { log.error("An error occurred [{}]", result.getLastError()); } } long endTime = System.currentTimeMillis(); log.info("Finished benchmarking."); long timeTakenMillis = endTime - startTime; float timeTaken = (float) timeTakenMillis / 1000; log.info("Results:\n\n" + String.format("%-25s %d", "Number of Items inserted:", numberOfItems) + "\n" + String.format("%-25s %.2f", "Time elapsed:", timeTaken) + " seconds\n" + String.format("%-25s %.2f", "Throughput:", numberOfItems / timeTaken) + " items/sec\n"); log.info("Removing test data..."); collection.remove(new BasicDBObject()); log.info("Cleared collection [test]"); } private static Options getOptions() { return MongdbBenchOptions.getOptions(); } private static CommandLine parseArgs(String[] args, Options options) { CommandLineParser parser = new BasicParser(); try { return parser.parse(options, args); } catch (ParseException e) { System.err.println(e); HelpFormatter helpFormatter = new HelpFormatter(); helpFormatter.printHelp("java -jar mongodb-benchmark-<version>.jar", "header", options, "footer", true); System.exit(1); } return null; } }