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502
#pma/libraries/ServerStatusData.php
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502
#pma/libraries/ServerStatusData.php
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@ -0,0 +1,502 @@
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<?php
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/* vim: set expandtab sw=4 ts=4 sts=4: */
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/**
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* ServerStatusData class
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* Used by server_status_*.php pages
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*
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* @package PhpMyAdmin
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*/
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namespace PMA\libraries;
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/**
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* This class provides data about the server status
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*
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* All properties of the class are read-only
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*
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* TODO: Use lazy initialisation for some of the properties
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* since not all of the server_status_*.php pages need
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* all the data that this class provides.
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*
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* @package PhpMyAdmin
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*/
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class ServerStatusData
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{
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public $status;
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public $sections;
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public $variables;
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public $used_queries;
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public $allocationMap;
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public $links;
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public $db_isLocal;
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public $section;
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public $sectionUsed;
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public $selfUrl;
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public $dataLoaded;
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/**
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* An empty setter makes the above properties read-only
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*
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* @param string $a key
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* @param mixed $b value
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*
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* @return void
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*/
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public function __set($a, $b)
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{
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// Discard everything
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}
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/**
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* Gets the allocations for constructor
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*
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* @return array
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*/
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private function _getAllocations()
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{
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return array(
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// variable name => section
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// variable names match when they begin with the given string
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'Com_' => 'com',
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'Innodb_' => 'innodb',
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'Ndb_' => 'ndb',
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'Handler_' => 'handler',
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'Qcache_' => 'qcache',
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'Threads_' => 'threads',
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'Slow_launch_threads' => 'threads',
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'Binlog_cache_' => 'binlog_cache',
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'Created_tmp_' => 'created_tmp',
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'Key_' => 'key',
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'Delayed_' => 'delayed',
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'Not_flushed_delayed_rows' => 'delayed',
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'Flush_commands' => 'query',
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'Last_query_cost' => 'query',
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'Slow_queries' => 'query',
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'Queries' => 'query',
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'Prepared_stmt_count' => 'query',
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'Select_' => 'select',
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'Sort_' => 'sort',
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'Open_tables' => 'table',
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'Opened_tables' => 'table',
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'Open_table_definitions' => 'table',
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'Opened_table_definitions' => 'table',
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'Table_locks_' => 'table',
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'Rpl_status' => 'repl',
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'Slave_' => 'repl',
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'Tc_' => 'tc',
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'Ssl_' => 'ssl',
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'Open_files' => 'files',
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'Open_streams' => 'files',
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'Opened_files' => 'files',
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);
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}
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/**
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* Gets the sections for constructor
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*
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* @return array
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*/
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private function _getSections()
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{
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return array(
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// section => section name (description)
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'com' => 'Com',
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'query' => __('SQL query'),
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'innodb' => 'InnoDB',
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'ndb' => 'NDB',
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'handler' => __('Handler'),
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'qcache' => __('Query cache'),
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'threads' => __('Threads'),
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'binlog_cache' => __('Binary log'),
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'created_tmp' => __('Temporary data'),
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'delayed' => __('Delayed inserts'),
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'key' => __('Key cache'),
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'select' => __('Joins'),
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'repl' => __('Replication'),
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'sort' => __('Sorting'),
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'table' => __('Tables'),
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'tc' => __('Transaction coordinator'),
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'files' => __('Files'),
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'ssl' => 'SSL',
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'other' => __('Other')
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);
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}
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/**
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* Gets the links for constructor
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*
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* @return array
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*/
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private function _getLinks()
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{
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$links = array();
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// variable or section name => (name => url)
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$links['table'][__('Flush (close) all tables')] = $this->selfUrl
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. PMA_URL_getCommon(
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array(
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'flush' => 'TABLES'
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)
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);
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$links['table'][__('Show open tables')]
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= 'sql.php' . PMA_URL_getCommon(
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array(
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'sql_query' => 'SHOW OPEN TABLES',
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'goto' => $this->selfUrl,
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)
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);
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if ($GLOBALS['replication_info']['master']['status']) {
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$links['repl'][__('Show slave hosts')]
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= 'sql.php' . PMA_URL_getCommon(
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array(
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'sql_query' => 'SHOW SLAVE HOSTS',
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'goto' => $this->selfUrl,
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)
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);
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$links['repl'][__('Show master status')] = '#replication_master';
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}
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if ($GLOBALS['replication_info']['slave']['status']) {
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$links['repl'][__('Show slave status')] = '#replication_slave';
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}
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$links['repl']['doc'] = 'replication';
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$links['qcache'][__('Flush query cache')]
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= $this->selfUrl
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. PMA_URL_getCommon(
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array(
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'flush' => 'QUERY CACHE'
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)
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);
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$links['qcache']['doc'] = 'query_cache';
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$links['threads']['doc'] = 'mysql_threads';
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$links['key']['doc'] = 'myisam_key_cache';
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$links['binlog_cache']['doc'] = 'binary_log';
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$links['Slow_queries']['doc'] = 'slow_query_log';
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$links['innodb'][__('Variables')]
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= 'server_engines.php?engine=InnoDB&'
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. PMA_URL_getCommon(array(), 'html', '');
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$links['innodb'][__('InnoDB Status')]
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= 'server_engines.php'
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. PMA_URL_getCommon(
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array(
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'engine' => 'InnoDB',
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'page' => 'Status'
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)
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);
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$links['innodb']['doc'] = 'innodb';
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return($links);
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}
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/**
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* Calculate some values
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*
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* @param array $server_status contains results of SHOW GLOBAL STATUS
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* @param array $server_variables contains results of SHOW GLOBAL VARIABLES
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*
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* @return array $server_status
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*/
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private function _calculateValues($server_status, $server_variables)
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{
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// Key_buffer_fraction
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if (isset($server_status['Key_blocks_unused'])
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&& isset($server_variables['key_cache_block_size'])
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&& isset($server_variables['key_buffer_size'])
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&& $server_variables['key_buffer_size'] != 0
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) {
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$server_status['Key_buffer_fraction_%']
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= 100
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- $server_status['Key_blocks_unused']
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* $server_variables['key_cache_block_size']
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/ $server_variables['key_buffer_size']
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* 100;
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} elseif (isset($server_status['Key_blocks_used'])
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&& isset($server_variables['key_buffer_size'])
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&& $server_variables['key_buffer_size'] != 0
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) {
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$server_status['Key_buffer_fraction_%']
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= $server_status['Key_blocks_used']
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* 1024
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/ $server_variables['key_buffer_size'];
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}
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// Ratio for key read/write
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if (isset($server_status['Key_writes'])
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&& isset($server_status['Key_write_requests'])
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&& $server_status['Key_write_requests'] > 0
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) {
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$key_writes = $server_status['Key_writes'];
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$key_write_requests = $server_status['Key_write_requests'];
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$server_status['Key_write_ratio_%']
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= 100 * $key_writes / $key_write_requests;
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}
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if (isset($server_status['Key_reads'])
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&& isset($server_status['Key_read_requests'])
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&& $server_status['Key_read_requests'] > 0
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) {
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$key_reads = $server_status['Key_reads'];
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$key_read_requests = $server_status['Key_read_requests'];
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$server_status['Key_read_ratio_%']
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= 100 * $key_reads / $key_read_requests;
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}
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// Threads_cache_hitrate
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if (isset($server_status['Threads_created'])
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&& isset($server_status['Connections'])
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&& $server_status['Connections'] > 0
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) {
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$server_status['Threads_cache_hitrate_%']
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= 100 - $server_status['Threads_created']
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/ $server_status['Connections'] * 100;
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}
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return $server_status;
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}
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/**
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* Sort variables into arrays
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*
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* @param array $server_status contains results of SHOW GLOBAL STATUS
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* @param array $allocations allocations for sections
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* @param array $allocationMap map variables to their section
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* @param array $sectionUsed is a section used?
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* @param array $used_queries used queries
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*
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* @return array ($allocationMap, $sectionUsed, $used_queries)
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*/
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private function _sortVariables(
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$server_status, $allocations, $allocationMap, $sectionUsed,
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$used_queries
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) {
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foreach ($server_status as $name => $value) {
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$section_found = false;
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foreach ($allocations as $filter => $section) {
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if (mb_strpos($name, $filter) !== false) {
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$allocationMap[$name] = $section;
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$sectionUsed[$section] = true;
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$section_found = true;
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if ($section == 'com' && $value > 0) {
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$used_queries[$name] = $value;
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}
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break; // Only exits inner loop
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}
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}
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if (! $section_found) {
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$allocationMap[$name] = 'other';
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$sectionUsed['other'] = true;
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}
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}
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return array($allocationMap, $sectionUsed, $used_queries);
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}
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/**
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* Constructor
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*/
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public function __construct()
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{
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$this->selfUrl = basename($GLOBALS['PMA_PHP_SELF']);
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// get status from server
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$server_status_result = $GLOBALS['dbi']->tryQuery('SHOW GLOBAL STATUS');
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$server_status = array();
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if ($server_status_result === false) {
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$this->dataLoaded = false;
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} else {
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$this->dataLoaded = true;
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while ($arr = $GLOBALS['dbi']->fetchRow($server_status_result)) {
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$server_status[$arr[0]] = $arr[1];
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}
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$GLOBALS['dbi']->freeResult($server_status_result);
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}
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// for some calculations we require also some server settings
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$server_variables = $GLOBALS['dbi']->fetchResult(
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'SHOW GLOBAL VARIABLES', 0, 1
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);
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// cleanup of some deprecated values
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$server_status = self::cleanDeprecated($server_status);
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// calculate some values
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$server_status = $this->_calculateValues(
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$server_status, $server_variables
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);
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// split variables in sections
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$allocations = $this->_getAllocations();
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$sections = $this->_getSections();
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// define some needful links/commands
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$links = $this->_getLinks();
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// Variable to contain all com_ variables (query statistics)
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$used_queries = array();
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// Variable to map variable names to their respective section name
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// (used for js category filtering)
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$allocationMap = array();
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// Variable to mark used sections
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$sectionUsed = array();
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// sort vars into arrays
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list(
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$allocationMap, $sectionUsed, $used_queries
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) = $this->_sortVariables(
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$server_status, $allocations, $allocationMap, $sectionUsed,
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$used_queries
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);
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// admin commands are not queries (e.g. they include COM_PING,
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// which is excluded from $server_status['Questions'])
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unset($used_queries['Com_admin_commands']);
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// Set all class properties
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$this->db_isLocal = false;
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$serverHostToLower = mb_strtolower(
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$GLOBALS['cfg']['Server']['host']
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);
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if ($serverHostToLower === 'localhost'
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|| $GLOBALS['cfg']['Server']['host'] === '127.0.0.1'
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|| $GLOBALS['cfg']['Server']['host'] === '::1'
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) {
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$this->db_isLocal = true;
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}
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$this->status = $server_status;
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$this->sections = $sections;
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$this->variables = $server_variables;
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$this->used_queries = $used_queries;
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$this->allocationMap = $allocationMap;
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$this->links = $links;
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$this->sectionUsed = $sectionUsed;
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}
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/**
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* cleanup of some deprecated values
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*
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* @param array $server_status status array to process
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*
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* @return array
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*/
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public static function cleanDeprecated($server_status)
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{
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$deprecated = array(
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'Com_prepare_sql' => 'Com_stmt_prepare',
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'Com_execute_sql' => 'Com_stmt_execute',
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'Com_dealloc_sql' => 'Com_stmt_close',
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);
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foreach ($deprecated as $old => $new) {
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if (isset($server_status[$old]) && isset($server_status[$new])) {
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unset($server_status[$old]);
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}
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}
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return $server_status;
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}
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/**
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* Generates menu HTML
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*
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* @return string
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*/
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public function getMenuHtml()
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{
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$url_params = PMA_URL_getCommon();
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$items = array(
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array(
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'name' => __('Server'),
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'url' => 'server_status.php'
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),
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array(
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'name' => __('Processes'),
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'url' => 'server_status_processes.php'
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),
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array(
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'name' => __('Query statistics'),
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'url' => 'server_status_queries.php'
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),
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array(
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'name' => __('All status variables'),
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'url' => 'server_status_variables.php'
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),
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array(
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'name' => __('Monitor'),
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'url' => 'server_status_monitor.php'
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),
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array(
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'name' => __('Advisor'),
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'url' => 'server_status_advisor.php'
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)
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);
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$retval = '<ul id="topmenu2">';
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foreach ($items as $item) {
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$class = '';
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if ($item['url'] === $this->selfUrl) {
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$class = ' class="tabactive"';
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}
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$retval .= '<li>';
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$retval .= '<a' . $class;
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$retval .= ' href="' . $item['url'] . $url_params . '">';
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$retval .= $item['name'];
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$retval .= '</a>';
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$retval .= '</li>';
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}
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$retval .= '</ul>';
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$retval .= '<div class="clearfloat"></div>';
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return $retval;
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}
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/**
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* Builds a <select> list for refresh rates
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*
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* @param string $name Name of select
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* @param int $defaultRate Currently chosen rate
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* @param array $refreshRates List of refresh rates
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*
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* @return string
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*/
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public static function getHtmlForRefreshList($name,
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$defaultRate = 5,
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$refreshRates = Array(1, 2, 5, 10, 20, 40, 60, 120, 300, 600)
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) {
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$return = '<select name="' . $name . '" id="id_' . $name
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. '" class="refreshRate">';
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foreach ($refreshRates as $rate) {
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$selected = ($rate == $defaultRate)?' selected="selected"':'';
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$return .= '<option value="' . $rate . '"' . $selected . '>';
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if ($rate < 60) {
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$return .= sprintf(
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_ngettext('%d second', '%d seconds', $rate), $rate
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);
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} else {
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$rate = $rate / 60;
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$return .= sprintf(
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_ngettext('%d minute', '%d minutes', $rate), $rate
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);
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}
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$return .= '</option>';
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||||
}
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$return .= '</select>';
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return $return;
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}
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||||
}
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||||
|
||||
Reference in New Issue
Block a user