128 lines
4.7 KiB
PHP
128 lines
4.7 KiB
PHP
<?php
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/*
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* Copyright 2010-2012 Amazon.com, Inc. or its affiliates. All Rights Reserved.
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*
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* Licensed under the Apache License, Version 2.0 (the "License").
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* You may not use this file except in compliance with the License.
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* A copy of the License is located at
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*
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* http://aws.amazon.com/apache2.0
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*
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* or in the "license" file accompanying this file. This file is distributed
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* on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either
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* express or implied. See the License for the specific language governing
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* permissions and limitations under the License.
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*/
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/*%******************************************************************************************%*/
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// CLASS
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/**
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* Contains a set of pre-built Amazon EMR Hadoop Bootstrap Actions.
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*
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* @version 2011.05.03
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* @license See the included NOTICE.md file for more information.
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* @copyright See the included NOTICE.md file for more information.
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* @link http://aws.amazon.com/php/ PHP Developer Center
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* @link http://hadoop.apache.org Apache Hadoop
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*/
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class CFHadoopBootstrap extends CFHadoopBase
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{
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// Config file types
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const CONFIG_SITE = 'S';
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const CONFIG_DEFAULT = 'D';
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const CONFIG_CORE = 'C';
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const CONFIG_HDFS = 'H';
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const CONFIG_MAPREDUCE = 'M';
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// Daemon types
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const DAEMON_NAME_NODE = 'namenode';
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const DAEMON_DATA_NODE = 'datanode';
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const DAEMON_JOB_TRACKER = 'jobtracker';
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const DAEMON_TASK_TRACKER = 'tasktracker';
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const DAEMON_CLIENT = 'client';
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/**
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* Create a new run-if bootstrap action which lets you conditionally run bootstrap actions.
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*
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* @param string $condition (Required) The condition to evaluate. If <code>true</code>, the bootstrap action executes.
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* @param array $args (Optional) An indexed array of arguments to pass to the script.
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* @return array A configuration set to be provided when running a job flow.
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*/
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public static function run_if($condition, $args = null)
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{
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if (!$args) $args = array();
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$args = is_array($args) ? $args : array($args);
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return self::script_runner('s3://us-east-1.elasticmapreduce/bootstrap-actions/run-if', $args);
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}
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/**
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* Specify options to merge with Hadoop's default configuration.
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*
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* @param string $file (Required) The Hadoop configuration file to merge with. [Allowed values: <code>CFHadoopBootstrap::CONFIG_SITE</code>, <code>CFHadoopBootstrap::CONFIG_DEFAULT</code>, <code>CFHadoopBootstrap::CONFIG_CORE</code>, <code>CFHadoopBootstrap::CONFIG_HDFS</code>, <code>CFHadoopBootstrap::CONFIG_MAPREDUCE</code>]
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* @param string|array $config (Required) This can either be an XML file in S3 (as <code>s3://bucket/path</code>), or an associative array of key-value pairs.
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* @return array A configuration set to be provided when running a job flow.
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*/
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public static function configure($file, $config)
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{
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$args = array();
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$file_arg = '-' . $file;
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if (is_string($config))
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{
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$args[] = $file_arg;
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$args[] = $config;
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}
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elseif (is_array($config))
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{
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foreach ($config as $key => $value)
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{
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$args[] = $file_arg;
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$args[] = $key . '=' . $value;
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}
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}
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return self::script_runner('s3://us-east-1.elasticmapreduce/bootstrap-actions/configure-hadoop', $args);
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}
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/**
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* Create a new bootstrap action which lets you configure Hadoop's daemons. The options are written to
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* the <code>hadoop-user-env.sh</code> file.
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*
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* @param string $daemon_type (Required) The Hadoop daemon to configure.
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* @param array $opt (Optional) An associative array of parameters that can have the following keys: <ul>
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* <li><code>HeapSize</code> - <code>integer</code> - Optional - The requested heap size of the daemon, in megabytes.</li>
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* <li><code>CLIOptions</code> - <code>string</code> - Optional - Additional Java command line arguments to pass to the daemon.</li>
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* <li><code>Replace</code> - <code>boolean</code> - Optional - Whether or not the file should be replaced. A value of <code>true</code> will replace the existing configuration file. A value of <code>false</code> will append the options to the configuration file.</li></ul>
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* @return array A configuration set to be provided when running a job flow.
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*/
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public static function daemon($daemon_type, $opt = null)
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{
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if (!$opt) $opt = array();
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$args = array();
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foreach ($opt as $key => $value)
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{
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switch ($key)
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{
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case 'HeapSize':
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$args[] = '--' . $daemon_type . '-heap-size=' . $value;
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break;
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case 'CLIOptions':
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$args[] = '--' . $daemon_type . '-opts="' . $value . '"';
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break;
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case 'Replace':
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if ((is_string($value) && $value === 'true') || (is_bool($value) && $value === true))
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{
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$args[] = '--replace';
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}
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break;
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}
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}
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return self::script_runner('s3://us-east-1.elasticmapreduce/bootstrap-actions/configure-daemons', $args);
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}
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}
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