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libphutil/src/error/PhutilAggregateException.php
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PhutilAggregateException.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.
*/
/**
* Exception that aggregates other exceptions into a single exception. For
* example, if you have several objects which can perform a task and just want
* at least one of them to succeed, you can do something like this:
*
* $exceptions = array();
* $success = false;
* foreach ($engines as $engine) {
* try {
* $engine->doSomething();
* $success = true;
* break;
* } catch (Exception $ex) {
* $exceptions[get_class($engine)] = $ex;
* }
* }
*
* if (!$success) {
* throw new PhutilAggregateException("All engines failed:", $exceptions);
* }
*
* @concrete-extensible
* @group error
*/
class PhutilAggregateException extends Exception {
private $exceptions = array();
public function __construct($message, array $other_exceptions) {
// We don't call assert_instances_of($other_exceptions, 'Exception') to not
// throw another exception in this exception.
$this->exceptions = $other_exceptions;
$full_message = array();
$full_message[] = $message;
foreach ($other_exceptions as $key => $exception) {
$ex_message =
(is_string($key) ? $key.': ' : '').
get_class($exception).': '.
$exception->getMessage();
$ex_message = ' - '.str_replace("\n", "\n ", $ex_message);
$full_message[] = $ex_message;
}
parent::__construct(implode("\n", $full_message), count($other_exceptions));
}
public function getExceptions() {
return $this->exceptions;
}
}
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