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461 lines
14 KiB
PHP
461 lines
14 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_Db
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* @subpackage Profiler
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* @copyright Copyright (c) 2005-2009 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: Profiler.php 16203 2009-06-21 18:56:17Z thomas $
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*/
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/**
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* @category Zend
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* @package Zend_Db
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* @subpackage Profiler
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* @copyright Copyright (c) 2005-2009 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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*/
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class Zend_Db_Profiler
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{
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/**
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* A connection operation or selecting a database.
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*/
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const CONNECT = 1;
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/**
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* Any general database query that does not fit into the other constants.
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*/
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const QUERY = 2;
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/**
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* Adding new data to the database, such as SQL's INSERT.
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*/
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const INSERT = 4;
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/**
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* Updating existing information in the database, such as SQL's UPDATE.
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*
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*/
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const UPDATE = 8;
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/**
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* An operation related to deleting data in the database,
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* such as SQL's DELETE.
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*/
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const DELETE = 16;
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/**
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* Retrieving information from the database, such as SQL's SELECT.
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*/
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const SELECT = 32;
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/**
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* Transactional operation, such as start transaction, commit, or rollback.
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*/
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const TRANSACTION = 64;
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/**
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* Array of Zend_Db_Profiler_Query objects.
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*
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* @var array
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*/
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protected $_queryProfiles = array();
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/**
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* Stores enabled state of the profiler. If set to False, calls to
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* queryStart() will simply be ignored.
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*
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* @var boolean
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*/
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protected $_enabled = false;
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/**
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* Stores the number of seconds to filter. NULL if filtering by time is
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* disabled. If an integer is stored here, profiles whose elapsed time
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* is less than this value in seconds will be unset from
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* the self::$_queryProfiles array.
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*
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* @var integer
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*/
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protected $_filterElapsedSecs = null;
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/**
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* Logical OR of any of the filter constants. NULL if filtering by query
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* type is disable. If an integer is stored here, it is the logical OR of
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* any of the query type constants. When the query ends, if it is not
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* one of the types specified, it will be unset from the
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* self::$_queryProfiles array.
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*
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* @var integer
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*/
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protected $_filterTypes = null;
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/**
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* Class constructor. The profiler is disabled by default unless it is
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* specifically enabled by passing in $enabled here or calling setEnabled().
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*
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* @param boolean $enabled
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* @return void
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*/
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public function __construct($enabled = false)
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{
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$this->setEnabled($enabled);
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}
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/**
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* Enable or disable the profiler. If $enable is false, the profiler
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* is disabled and will not log any queries sent to it.
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*
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* @param boolean $enable
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* @return Zend_Db_Profiler Provides a fluent interface
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*/
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public function setEnabled($enable)
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{
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$this->_enabled = (boolean) $enable;
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return $this;
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}
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/**
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* Get the current state of enable. If True is returned,
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* the profiler is enabled.
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*
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* @return boolean
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*/
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public function getEnabled()
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{
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return $this->_enabled;
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}
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/**
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* Sets a minimum number of seconds for saving query profiles. If this
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* is set, only those queries whose elapsed time is equal or greater than
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* $minimumSeconds will be saved. To save all queries regardless of
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* elapsed time, set $minimumSeconds to null.
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*
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* @param integer $minimumSeconds OPTIONAL
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* @return Zend_Db_Profiler Provides a fluent interface
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*/
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public function setFilterElapsedSecs($minimumSeconds = null)
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{
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if (null === $minimumSeconds) {
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$this->_filterElapsedSecs = null;
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} else {
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$this->_filterElapsedSecs = (integer) $minimumSeconds;
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}
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return $this;
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}
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/**
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* Returns the minimum number of seconds for saving query profiles, or null if
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* query profiles are saved regardless of elapsed time.
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*
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* @return integer|null
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*/
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public function getFilterElapsedSecs()
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{
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return $this->_filterElapsedSecs;
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}
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/**
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* Sets the types of query profiles to save. Set $queryType to one of
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* the Zend_Db_Profiler::* constants to only save profiles for that type of
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* query. To save more than one type, logical OR them together. To
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* save all queries regardless of type, set $queryType to null.
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*
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* @param integer $queryTypes OPTIONAL
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* @return Zend_Db_Profiler Provides a fluent interface
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*/
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public function setFilterQueryType($queryTypes = null)
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{
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$this->_filterTypes = $queryTypes;
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return $this;
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}
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/**
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* Returns the types of query profiles saved, or null if queries are saved regardless
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* of their types.
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*
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* @return integer|null
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* @see Zend_Db_Profiler::setFilterQueryType()
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*/
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public function getFilterQueryType()
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{
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return $this->_filterTypes;
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}
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/**
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* Clears the history of any past query profiles. This is relentless
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* and will even clear queries that were started and may not have
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* been marked as ended.
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*
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* @return Zend_Db_Profiler Provides a fluent interface
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*/
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public function clear()
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{
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$this->_queryProfiles = array();
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return $this;
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}
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/**
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* @param integer $queryId
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* @return integer or null
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*/
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public function queryClone(Zend_Db_Profiler_Query $query)
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{
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$this->_queryProfiles[] = clone $query;
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end($this->_queryProfiles);
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return key($this->_queryProfiles);
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}
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/**
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* Starts a query. Creates a new query profile object (Zend_Db_Profiler_Query)
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* and returns the "query profiler handle". Run the query, then call
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* queryEnd() and pass it this handle to make the query as ended and
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* record the time. If the profiler is not enabled, this takes no
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* action and immediately returns null.
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*
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* @param string $queryText SQL statement
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* @param integer $queryType OPTIONAL Type of query, one of the Zend_Db_Profiler::* constants
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* @return integer|null
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*/
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public function queryStart($queryText, $queryType = null)
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{
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if (!$this->_enabled) {
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return null;
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}
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// make sure we have a query type
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if (null === $queryType) {
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switch (strtolower(substr(ltrim($queryText), 0, 6))) {
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case 'insert':
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$queryType = self::INSERT;
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break;
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case 'update':
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$queryType = self::UPDATE;
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break;
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case 'delete':
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$queryType = self::DELETE;
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break;
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case 'select':
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$queryType = self::SELECT;
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break;
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default:
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$queryType = self::QUERY;
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break;
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}
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}
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/**
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* @see Zend_Db_Profiler_Query
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*/
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require_once 'Zend/Db/Profiler/Query.php';
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$this->_queryProfiles[] = new Zend_Db_Profiler_Query($queryText, $queryType);
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end($this->_queryProfiles);
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return key($this->_queryProfiles);
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}
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/**
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* Ends a query. Pass it the handle that was returned by queryStart().
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* This will mark the query as ended and save the time.
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*
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* @param integer $queryId
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* @throws Zend_Db_Profiler_Exception
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* @return void
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*/
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public function queryEnd($queryId)
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{
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// Don't do anything if the Zend_Db_Profiler is not enabled.
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if (!$this->_enabled) {
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return;
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}
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// Check for a valid query handle.
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if (!isset($this->_queryProfiles[$queryId])) {
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/**
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* @see Zend_Db_Profiler_Exception
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*/
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require_once 'Zend/Db/Profiler/Exception.php';
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throw new Zend_Db_Profiler_Exception("Profiler has no query with handle '$queryId'.");
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}
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$qp = $this->_queryProfiles[$queryId];
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// Ensure that the query profile has not already ended
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if ($qp->hasEnded()) {
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/**
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* @see Zend_Db_Profiler_Exception
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*/
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require_once 'Zend/Db/Profiler/Exception.php';
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throw new Zend_Db_Profiler_Exception("Query with profiler handle '$queryId' has already ended.");
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}
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// End the query profile so that the elapsed time can be calculated.
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$qp->end();
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/**
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* If filtering by elapsed time is enabled, only keep the profile if
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* it ran for the minimum time.
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*/
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if (null !== $this->_filterElapsedSecs && $qp->getElapsedSecs() < $this->_filterElapsedSecs) {
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unset($this->_queryProfiles[$queryId]);
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return;
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}
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/**
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* If filtering by query type is enabled, only keep the query if
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* it was one of the allowed types.
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*/
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if (null !== $this->_filterTypes && !($qp->getQueryType() & $this->_filterTypes)) {
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unset($this->_queryProfiles[$queryId]);
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return;
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}
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}
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/**
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* Get a profile for a query. Pass it the same handle that was returned
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* by queryStart() and it will return a Zend_Db_Profiler_Query object.
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*
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* @param integer $queryId
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* @throws Zend_Db_Profiler_Exception
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* @return Zend_Db_Profiler_Query
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*/
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public function getQueryProfile($queryId)
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{
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if (!array_key_exists($queryId, $this->_queryProfiles)) {
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/**
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* @see Zend_Db_Profiler_Exception
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*/
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require_once 'Zend/Db/Profiler/Exception.php';
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throw new Zend_Db_Profiler_Exception("Query handle '$queryId' not found in profiler log.");
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}
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return $this->_queryProfiles[$queryId];
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}
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/**
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* Get an array of query profiles (Zend_Db_Profiler_Query objects). If $queryType
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* is set to one of the Zend_Db_Profiler::* constants then only queries of that
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* type will be returned. Normally, queries that have not yet ended will
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* not be returned unless $showUnfinished is set to True. If no
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* queries were found, False is returned. The returned array is indexed by the query
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* profile handles.
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*
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* @param integer $queryType
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* @param boolean $showUnfinished
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* @return array|false
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*/
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public function getQueryProfiles($queryType = null, $showUnfinished = false)
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{
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$queryProfiles = array();
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foreach ($this->_queryProfiles as $key => $qp) {
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if ($queryType === null) {
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$condition = true;
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} else {
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$condition = ($qp->getQueryType() & $queryType);
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}
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if (($qp->hasEnded() || $showUnfinished) && $condition) {
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$queryProfiles[$key] = $qp;
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}
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}
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if (empty($queryProfiles)) {
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$queryProfiles = false;
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}
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return $queryProfiles;
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}
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/**
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* Get the total elapsed time (in seconds) of all of the profiled queries.
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* Only queries that have ended will be counted. If $queryType is set to
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* one or more of the Zend_Db_Profiler::* constants, the elapsed time will be calculated
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* only for queries of the given type(s).
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*
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* @param integer $queryType OPTIONAL
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* @return float
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*/
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public function getTotalElapsedSecs($queryType = null)
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{
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$elapsedSecs = 0;
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foreach ($this->_queryProfiles as $key => $qp) {
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if (null === $queryType) {
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$condition = true;
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} else {
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$condition = ($qp->getQueryType() & $queryType);
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}
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if (($qp->hasEnded()) && $condition) {
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$elapsedSecs += $qp->getElapsedSecs();
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}
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}
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return $elapsedSecs;
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}
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/**
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* Get the total number of queries that have been profiled. Only queries that have ended will
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* be counted. If $queryType is set to one of the Zend_Db_Profiler::* constants, only queries of
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* that type will be counted.
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*
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* @param integer $queryType OPTIONAL
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* @return integer
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*/
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public function getTotalNumQueries($queryType = null)
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{
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if (null === $queryType) {
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return count($this->_queryProfiles);
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}
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$numQueries = 0;
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foreach ($this->_queryProfiles as $qp) {
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if ($qp->hasEnded() && ($qp->getQueryType() & $queryType)) {
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$numQueries++;
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}
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}
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return $numQueries;
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}
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/**
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* Get the Zend_Db_Profiler_Query object for the last query that was run, regardless if it has
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* ended or not. If the query has not ended, its end time will be null. If no queries have
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* been profiled, false is returned.
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*
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* @return Zend_Db_Profiler_Query|false
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*/
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public function getLastQueryProfile()
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{
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if (empty($this->_queryProfiles)) {
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return false;
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}
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end($this->_queryProfiles);
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return current($this->_queryProfiles);
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}
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}
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