DrydockBlueprint.php
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DrydockBlueprint.php
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	<?php

	/*
	* Copyright 2012 Facebook, 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.
	*/

	abstract class DrydockBlueprint {

	abstract public function getType();
	abstract public function getInterface(
	DrydockResource $resource,
	DrydockLease $lease,
	$type);

	public function canAllocateResources() {
	return false;
	}

	public function allocateResource() {
	throw new Exception("This blueprint can not allocate resources!");
	}

	public static function getAllBlueprints() {
	static $list = null;

	if ($list === null) {
	$blueprints = id(new PhutilSymbolLoader())
	->setType('class')
	->setAncestorClass('DrydockBlueprint')
	->setConcreteOnly(true)
	->selectAndLoadSymbols();
	$list = ipull($blueprints, 'name', 'name');
	foreach ($list as $class_name => $ignored) {
	$list[$class_name] = newv($class_name, array());
	}
	}

	return $list;
	}

	public static function getAllBlueprintsForResource($type) {
	static $groups = null;
	if ($groups === null) {
	$groups = mgroup(self::getAllBlueprints(), 'getType');
	}
	return idx($groups, $type, array());
	}

	}