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456
admin/phpMyAdmin/libraries/classes/Server/Status/Data.php
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456
admin/phpMyAdmin/libraries/classes/Server/Status/Data.php
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<?php
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/**
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* PhpMyAdmin\Server\Status\Data class
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* Used by server_status_*.php pages
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*/
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declare(strict_types=1);
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namespace PhpMyAdmin\Server\Status;
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use PhpMyAdmin\ReplicationInfo;
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use PhpMyAdmin\Url;
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use function __;
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use function basename;
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use function mb_strtolower;
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use function str_contains;
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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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class Data
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{
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/** @var array */
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public $status;
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/** @var array */
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public $sections;
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/** @var array */
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public $variables;
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/** @var array */
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public $usedQueries;
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/** @var array */
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public $allocationMap;
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/** @var array */
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public $links;
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/** @var bool */
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public $dbIsLocal;
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/** @var mixed */
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public $section;
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/** @var array */
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public $sectionUsed;
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/** @var string */
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public $selfUrl;
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/** @var bool */
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public $dataLoaded;
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/** @var ReplicationInfo */
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private $replicationInfo;
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public function getReplicationInfo(): ReplicationInfo
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{
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return $this->replicationInfo;
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}
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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 $b value
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*/
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public function __set($a, $b): void
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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 [
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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 [
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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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$primaryInfo = $this->replicationInfo->getPrimaryInfo();
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$replicaInfo = $this->replicationInfo->getReplicaInfo();
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$links = [];
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// variable or section name => (name => url)
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$links['table'][__('Flush (close) all tables')] = [
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'url' => $this->selfUrl,
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'params' => Url::getCommon(['flush' => 'TABLES'], ''),
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];
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$links['table'][__('Show open tables')] = [
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'url' => Url::getFromRoute('/sql'),
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'params' => Url::getCommon([
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'sql_query' => 'SHOW OPEN TABLES',
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'goto' => $this->selfUrl,
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], ''),
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];
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if ($primaryInfo['status']) {
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$links['repl'][__('Show replica hosts')] = [
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'url' => Url::getFromRoute('/sql'),
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'params' => Url::getCommon([
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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 primary status')] = [
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'url' => '#replication_primary',
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'params' => '',
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];
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}
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if ($replicaInfo['status']) {
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$links['repl'][__('Show replica status')] = [
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'url' => '#replication_replica',
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'params' => '',
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];
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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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'url' => $this->selfUrl,
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'params' => Url::getCommon(['flush' => 'QUERY CACHE'], ''),
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];
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$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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$links['innodb'][__('Variables')] = [
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'url' => Url::getFromRoute('/server/engines/InnoDB'),
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'params' => '',
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];
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$links['innodb'][__('InnoDB Status')] = [
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'url' => Url::getFromRoute('/server/engines/InnoDB/Status'),
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'params' => '',
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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
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*/
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private function calculateValues(array $server_status, array $server_variables)
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{
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// Key_buffer_fraction
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if (
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isset($server_status['Key_blocks_unused'], $server_variables['key_cache_block_size'])
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&& isset($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_%'] = 100
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- $server_status['Key_blocks_unused']
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* $server_variables['key_cache_block_size']
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/ $server_variables['key_buffer_size']
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* 100;
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} elseif (
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isset($server_status['Key_blocks_used'], $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_%'] = $server_status['Key_blocks_used']
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* 1024
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/ $server_variables['key_buffer_size'];
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}
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// Ratio for key read/write
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if (
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isset($server_status['Key_writes'], $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_%'] = 100 * $key_writes / $key_write_requests;
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}
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if (
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isset($server_status['Key_reads'], $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_%'] = 100 * $key_reads / $key_read_requests;
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}
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// Threads_cache_hitrate
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if (
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isset($server_status['Threads_created'], $server_status['Connections'])
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&& $server_status['Connections'] > 0
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) {
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$server_status['Threads_cache_hitrate_%'] = 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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array $server_status,
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array $allocations,
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array $allocationMap,
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array $sectionUsed,
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array $used_queries
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) {
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foreach ($server_status as $name => $value) {
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$section_found = false;
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foreach ($allocations as $filter => $section) {
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if (! str_contains($name, $filter)) {
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continue;
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}
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$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] = $value;
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}
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break; // Only exits inner loop
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}
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if ($section_found) {
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continue;
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}
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$allocationMap[$name] = 'other';
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$sectionUsed['other'] = true;
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}
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return [
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$allocationMap,
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$sectionUsed,
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$used_queries,
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];
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}
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public function __construct()
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{
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global $dbi;
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$this->replicationInfo = new ReplicationInfo($dbi);
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$this->replicationInfo->load($_POST['primary_connection'] ?? null);
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$this->selfUrl = basename($GLOBALS['PMA_PHP_SELF']);
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// get status from server
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$server_status_result = $dbi->tryQuery('SHOW GLOBAL STATUS');
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if ($server_status_result === false) {
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$server_status = [];
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$this->dataLoaded = false;
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} else {
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$this->dataLoaded = true;
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$server_status = $server_status_result->fetchAllKeyPair();
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unset($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 = $dbi->fetchResult('SHOW GLOBAL VARIABLES', 0, 1);
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// cleanup of some deprecated values
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$server_status = self::cleanDeprecated($server_status);
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// calculate some values
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$server_status = $this->calculateValues($server_status, $server_variables);
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// split variables in sections
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$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 = [];
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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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$allocationMap = [];
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// Variable to mark used sections
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$sectionUsed = [];
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// sort vars into arrays
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[
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$allocationMap,
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$sectionUsed,
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$used_queries,
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] = $this->sortVariables($server_status, $allocations, $allocationMap, $sectionUsed, $used_queries);
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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->dbIsLocal = false;
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// can be null if $cfg['ServerDefault'] = 0;
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$serverHostToLower = mb_strtolower((string) $GLOBALS['cfg']['Server']['host']);
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if (
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$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->dbIsLocal = 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->usedQueries = $used_queries;
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$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(array $server_status)
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{
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$deprecated = [
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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], $server_status[$new])) {
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continue;
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}
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unset($server_status[$old]);
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}
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return $server_status;
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}
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}
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