nextcloud/3rdparty/aws-sdk/utilities/hadoopbootstrap.class.php

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<?php
/*
* Copyright 2010-2012 Amazon.com, Inc. or its affiliates. All Rights Reserved.
*
* Licensed under the Apache License, Version 2.0 (the "License").
* You may not use this file except in compliance with the License.
* A copy of the License is located at
*
* http://aws.amazon.com/apache2.0
*
* or in the "license" file accompanying this file. This file 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.
*/
/*%******************************************************************************************%*/
// CLASS
/**
* Contains a set of pre-built Amazon EMR Hadoop Bootstrap Actions.
*
* @version 2011.05.03
* @license See the included NOTICE.md file for more information.
* @copyright See the included NOTICE.md file for more information.
* @link http://aws.amazon.com/php/ PHP Developer Center
* @link http://hadoop.apache.org Apache Hadoop
*/
class CFHadoopBootstrap extends CFHadoopBase
{
// Config file types
const CONFIG_SITE = 'S';
const CONFIG_DEFAULT = 'D';
const CONFIG_CORE = 'C';
const CONFIG_HDFS = 'H';
const CONFIG_MAPREDUCE = 'M';
// Daemon types
const DAEMON_NAME_NODE = 'namenode';
const DAEMON_DATA_NODE = 'datanode';
const DAEMON_JOB_TRACKER = 'jobtracker';
const DAEMON_TASK_TRACKER = 'tasktracker';
const DAEMON_CLIENT = 'client';
/**
* Create a new run-if bootstrap action which lets you conditionally run bootstrap actions.
*
* @param string $condition (Required) The condition to evaluate. If <code>true</code>, the bootstrap action executes.
* @param array $args (Optional) An indexed array of arguments to pass to the script.
* @return array A configuration set to be provided when running a job flow.
*/
public static function run_if($condition, $args = null)
{
if (!$args) $args = array();
$args = is_array($args) ? $args : array($args);
return self::script_runner('s3://us-east-1.elasticmapreduce/bootstrap-actions/run-if', $args);
}
/**
* Specify options to merge with Hadoop's default configuration.
*
* @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>]
* @param string|array $config (Required) This can either be an XML file in S3 (as <code>s3://bucket/path</code>), or an associative array of key-value pairs.
* @return array A configuration set to be provided when running a job flow.
*/
public static function configure($file, $config)
{
$args = array();
$file_arg = '-' . $file;
if (is_string($config))
{
$args[] = $file_arg;
$args[] = $config;
}
elseif (is_array($config))
{
foreach ($config as $key => $value)
{
$args[] = $file_arg;
$args[] = $key . '=' . $value;
}
}
return self::script_runner('s3://us-east-1.elasticmapreduce/bootstrap-actions/configure-hadoop', $args);
}
/**
* Create a new bootstrap action which lets you configure Hadoop's daemons. The options are written to
* the <code>hadoop-user-env.sh</code> file.
*
* @param string $daemon_type (Required) The Hadoop daemon to configure.
* @param array $opt (Optional) An associative array of parameters that can have the following keys: <ul>
* <li><code>HeapSize</code> - <code>integer</code> - Optional - The requested heap size of the daemon, in megabytes.</li>
* <li><code>CLIOptions</code> - <code>string</code> - Optional - Additional Java command line arguments to pass to the daemon.</li>
* <li><code>Replace</code> - <code>boolean</code> - Optional - Whether or not the file should be replaced. A value of <code>true</code> will replace the existing configuration file. A value of <code>false</code> will append the options to the configuration file.</li></ul>
* @return array A configuration set to be provided when running a job flow.
*/
public static function daemon($daemon_type, $opt = null)
{
if (!$opt) $opt = array();
$args = array();
foreach ($opt as $key => $value)
{
switch ($key)
{
case 'HeapSize':
$args[] = '--' . $daemon_type . '-heap-size=' . $value;
break;
case 'CLIOptions':
$args[] = '--' . $daemon_type . '-opts="' . $value . '"';
break;
case 'Replace':
if ((is_string($value) && $value === 'true') || (is_bool($value) && $value === true))
{
$args[] = '--replace';
}
break;
}
}
return self::script_runner('s3://us-east-1.elasticmapreduce/bootstrap-actions/configure-daemons', $args);
}
}