430 Zeilen
13 KiB
PHP
430 Zeilen
13 KiB
PHP
<?php
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/**
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* Zend Framework
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*
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* LICENSE
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*
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* This source file is subject to the new BSD license that is bundled
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* with this package in the file LICENSE.txt.
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* It is also available through the world-wide-web at this URL:
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* http://framework.zend.com/license/new-bsd
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* If you did not receive a copy of the license and are unable to
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* obtain it through the world-wide-web, please send an email
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* to license@zend.com so we can send you a copy immediately.
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*
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* @category Zend
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* @package Zend_Log
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* @subpackage Writer
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* @copyright Copyright (c) 2005-2011 Zend Technologies USA Inc. (http://www.zend.com)
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* @license http://framework.zend.com/license/new-bsd New BSD License
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* @version $Id$
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*/
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/** Zend_Log_Writer_Abstract */
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require_once 'Zend/Log/Writer/Abstract.php';
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/** Zend_Log_Exception */
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require_once 'Zend/Log/Exception.php';
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/** Zend_Log_Formatter_Simple*/
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require_once 'Zend/Log/Formatter/Simple.php';
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/**
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* Class used for writing log messages to email via Zend_Mail.
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*
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* Allows for emailing log messages at and above a certain level via a
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* Zend_Mail object. Note that this class only sends the email upon
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* completion, so any log entries accumulated are sent in a single email.
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*
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* @category Zend
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* @package Zend_Log
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* @subpackage Writer
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* @copyright Copyright (c) 2005-2011 Zend Technologies USA Inc. (http://www.zend.com)
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* @license http://framework.zend.com/license/new-bsd New BSD License
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* @version $Id$
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*/
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class Zend_Log_Writer_Mail extends Zend_Log_Writer_Abstract
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{
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/**
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* Array of formatted events to include in message body.
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*
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* @var array
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*/
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protected $_eventsToMail = array();
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/**
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* Array of formatted lines for use in an HTML email body; these events
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* are formatted with an optional formatter if the caller is using
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* Zend_Layout.
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*
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* @var array
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*/
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protected $_layoutEventsToMail = array();
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/**
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* Zend_Mail instance to use
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*
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* @var Zend_Mail
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*/
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protected $_mail;
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/**
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* Zend_Layout instance to use; optional.
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*
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* @var Zend_Layout
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*/
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protected $_layout;
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/**
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* Optional formatter for use when rendering with Zend_Layout.
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*
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* @var Zend_Log_Formatter_Interface
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*/
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protected $_layoutFormatter;
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/**
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* Array keeping track of the number of entries per priority level.
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*
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* @var array
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*/
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protected $_numEntriesPerPriority = array();
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/**
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* Subject prepend text.
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*
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* Can only be used of the Zend_Mail object has not already had its
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* subject line set. Using this will cause the subject to have the entry
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* counts per-priority level appended to it.
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*
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* @var string|null
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*/
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protected $_subjectPrependText;
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/**
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* MethodMap for Zend_Mail's headers
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*
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* @var array
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*/
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protected static $_methodMapHeaders = array(
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'from' => 'setFrom',
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'to' => 'addTo',
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'cc' => 'addCc',
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'bcc' => 'addBcc',
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);
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/**
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* Class constructor.
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*
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* Constructs the mail writer; requires a Zend_Mail instance, and takes an
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* optional Zend_Layout instance. If Zend_Layout is being used,
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* $this->_layout->events will be set for use in the layout template.
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*
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* @param Zend_Mail $mail Mail instance
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* @param Zend_Layout $layout Layout instance; optional
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* @return void
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*/
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public function __construct(Zend_Mail $mail, Zend_Layout $layout = null)
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{
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$this->_mail = $mail;
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if (null !== $layout) {
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$this->setLayout($layout);
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}
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$this->_formatter = new Zend_Log_Formatter_Simple();
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}
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/**
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* Create a new instance of Zend_Log_Writer_Mail
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*
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* @param array|Zend_Config $config
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* @return Zend_Log_Writer_Mail
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*/
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static public function factory($config)
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{
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$config = self::_parseConfig($config);
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$mail = self::_constructMailFromConfig($config);
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$writer = new self($mail);
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if (isset($config['layout']) || isset($config['layoutOptions'])) {
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$writer->setLayout($config);
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}
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if (isset($config['layoutFormatter'])) {
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$layoutFormatter = new $config['layoutFormatter'];
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$writer->setLayoutFormatter($layoutFormatter);
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}
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if (isset($config['subjectPrependText'])) {
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$writer->setSubjectPrependText($config['subjectPrependText']);
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}
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return $writer;
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}
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/**
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* Set the layout
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*
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* @param Zend_Layout|array $layout
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* @return Zend_Log_Writer_Mail
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* @throws Zend_Log_Exception
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*/
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public function setLayout($layout)
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{
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if (is_array($layout)) {
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$layout = $this->_constructLayoutFromConfig($layout);
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}
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if (!$layout instanceof Zend_Layout) {
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require_once 'Zend/Log/Exception.php';
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throw new Zend_Log_Exception('Mail must be an instance of Zend_Layout or an array');
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}
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$this->_layout = $layout;
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return $this;
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}
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/**
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* Construct a Zend_Mail instance based on a configuration array
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*
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* @param array $config
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* @return Zend_Mail
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* @throws Zend_Log_Exception
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*/
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protected static function _constructMailFromConfig(array $config)
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{
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$mailClass = 'Zend_Mail';
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if (isset($config['mail'])) {
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$mailClass = $config['mail'];
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}
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if (!array_key_exists('charset', $config)) {
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$config['charset'] = null;
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}
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$mail = new $mailClass($config['charset']);
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if (!$mail instanceof Zend_Mail) {
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throw new Zend_Log_Exception($mail . 'must extend Zend_Mail');
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}
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if (isset($config['subject'])) {
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$mail->setSubject($config['subject']);
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}
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$headerAddresses = array_intersect_key($config, self::$_methodMapHeaders);
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if (count($headerAddresses)) {
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foreach ($headerAddresses as $header => $address) {
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$method = self::$_methodMapHeaders[$header];
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if (is_array($address) && isset($address['name'])
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&& !is_numeric($address['name'])
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) {
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$params = array(
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$address['email'],
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$address['name']
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);
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} else if (is_array($address) && isset($address['email'])) {
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$params = array($address['email']);
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} else {
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$params = array($address);
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}
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call_user_func_array(array($mail, $method), $params);
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}
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}
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return $mail;
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}
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/**
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* Construct a Zend_Layout instance based on a configuration array
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*
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* @param array $config
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* @return Zend_Layout
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* @throws Zend_Log_Exception
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*/
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protected function _constructLayoutFromConfig(array $config)
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{
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$config = array_merge(array(
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'layout' => 'Zend_Layout',
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'layoutOptions' => null
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), $config);
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$layoutClass = $config['layout'];
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$layout = new $layoutClass($config['layoutOptions']);
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if (!$layout instanceof Zend_Layout) {
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throw new Zend_Log_Exception($layout . 'must extend Zend_Layout');
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}
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return $layout;
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}
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/**
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* Places event line into array of lines to be used as message body.
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*
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* Handles the formatting of both plaintext entries, as well as those
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* rendered with Zend_Layout.
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*
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* @param array $event Event data
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* @return void
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*/
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protected function _write($event)
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{
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// Track the number of entries per priority level.
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if (!isset($this->_numEntriesPerPriority[$event['priorityName']])) {
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$this->_numEntriesPerPriority[$event['priorityName']] = 1;
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} else {
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$this->_numEntriesPerPriority[$event['priorityName']]++;
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}
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$formattedEvent = $this->_formatter->format($event);
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// All plaintext events are to use the standard formatter.
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$this->_eventsToMail[] = $formattedEvent;
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// If we have a Zend_Layout instance, use a specific formatter for the
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// layout if one exists. Otherwise, just use the event with its
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// default format.
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if ($this->_layout) {
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if ($this->_layoutFormatter) {
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$this->_layoutEventsToMail[] =
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$this->_layoutFormatter->format($event);
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} else {
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$this->_layoutEventsToMail[] = $formattedEvent;
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}
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}
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}
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/**
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* Gets instance of Zend_Log_Formatter_Instance used for formatting a
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* message using Zend_Layout, if applicable.
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*
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* @return Zend_Log_Formatter_Interface|null The formatter, or null.
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*/
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public function getLayoutFormatter()
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{
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return $this->_layoutFormatter;
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}
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/**
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* Sets a specific formatter for use with Zend_Layout events.
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*
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* Allows use of a second formatter on lines that will be rendered with
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* Zend_Layout. In the event that Zend_Layout is not being used, this
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* formatter cannot be set, so an exception will be thrown.
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*
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* @param Zend_Log_Formatter_Interface $formatter
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* @return Zend_Log_Writer_Mail
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* @throws Zend_Log_Exception
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*/
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public function setLayoutFormatter(Zend_Log_Formatter_Interface $formatter)
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{
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if (!$this->_layout) {
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throw new Zend_Log_Exception(
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'cannot set formatter for layout; ' .
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'a Zend_Layout instance is not in use');
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}
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$this->_layoutFormatter = $formatter;
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return $this;
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}
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/**
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* Allows caller to have the mail subject dynamically set to contain the
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* entry counts per-priority level.
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*
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* Sets the text for use in the subject, with entry counts per-priority
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* level appended to the end. Since a Zend_Mail subject can only be set
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* once, this method cannot be used if the Zend_Mail object already has a
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* subject set.
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*
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* @param string $subject Subject prepend text.
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* @return Zend_Log_Writer_Mail
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* @throws Zend_Log_Exception
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*/
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public function setSubjectPrependText($subject)
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{
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if ($this->_mail->getSubject()) {
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throw new Zend_Log_Exception(
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'subject already set on mail; ' .
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'cannot set subject prepend text');
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}
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$this->_subjectPrependText = (string) $subject;
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return $this;
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}
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/**
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* Sends mail to recipient(s) if log entries are present. Note that both
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* plaintext and HTML portions of email are handled here.
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*
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* @return void
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*/
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public function shutdown()
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{
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// If there are events to mail, use them as message body. Otherwise,
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// there is no mail to be sent.
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if (empty($this->_eventsToMail)) {
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return;
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}
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if ($this->_subjectPrependText !== null) {
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// Tack on the summary of entries per-priority to the subject
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// line and set it on the Zend_Mail object.
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$numEntries = $this->_getFormattedNumEntriesPerPriority();
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$this->_mail->setSubject(
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"{$this->_subjectPrependText} ({$numEntries})");
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}
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// Always provide events to mail as plaintext.
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$this->_mail->setBodyText(implode('', $this->_eventsToMail));
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// If a Zend_Layout instance is being used, set its "events"
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// value to the lines formatted for use with the layout.
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if ($this->_layout) {
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// Set the required "messages" value for the layout. Here we
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// are assuming that the layout is for use with HTML.
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$this->_layout->events =
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implode('', $this->_layoutEventsToMail);
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// If an exception occurs during rendering, convert it to a notice
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// so we can avoid an exception thrown without a stack frame.
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try {
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$this->_mail->setBodyHtml($this->_layout->render());
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} catch (Exception $e) {
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trigger_error(
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"exception occurred when rendering layout; " .
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"unable to set html body for message; " .
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"message = {$e->getMessage()}; " .
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"code = {$e->getCode()}; " .
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"exception class = " . get_class($e),
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E_USER_NOTICE);
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}
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}
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// Finally, send the mail. If an exception occurs, convert it into a
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// warning-level message so we can avoid an exception thrown without a
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// stack frame.
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try {
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$this->_mail->send();
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} catch (Exception $e) {
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trigger_error(
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"unable to send log entries via email; " .
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"message = {$e->getMessage()}; " .
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"code = {$e->getCode()}; " .
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"exception class = " . get_class($e),
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E_USER_WARNING);
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}
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}
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/**
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* Gets a string of number of entries per-priority level that occurred, or
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* an emptry string if none occurred.
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*
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* @return string
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*/
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protected function _getFormattedNumEntriesPerPriority()
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{
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$strings = array();
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foreach ($this->_numEntriesPerPriority as $priority => $numEntries) {
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$strings[] = "{$priority}={$numEntries}";
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}
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return implode(', ', $strings);
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}
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}
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