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<?php |
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namespace N98\Magento\Command\Database; |
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use N98\Util\TimeElapsed; |
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class StatusCommand extends AbstractShowCommand |
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{ |
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protected $showMethod = 'getGlobalStatus'; |
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/** |
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* Add more important status variables |
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* |
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* @var array |
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*/ |
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protected $_importantVars = array( |
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'Threads_connected' => array( |
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'desc' => 'Total number of clients that have currently open connections to the server.', |
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), |
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'Created_tmp_disk_tables' => array( |
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'desc' => 'Number of temporary tables that have been created on disk instead of in-memory. Lower is |
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better.', |
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), |
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'Handler_read_first' => array( |
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'desc' => 'Number of times a table handler made a request to read the first row of a table index.', |
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), |
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'Handler_read_rnd_next' => array( |
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'desc' => 'Number of requests to read the next row in the data file. This value is high if you |
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are doing a lot of table scans. Generally this suggests that your tables are not properly indexed or |
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that your queries are not written to take advantage of the indexes you have.', |
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), |
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'Innodb_buffer_pool_wait_free' => array( |
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'desc' => 'Number of times MySQL has to wait for memory pages to be flushed.', |
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), |
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'Innodb_buffer_pool_pages_dirty' => array( |
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'desc' => 'Indicates the number of InnoDB buffer pool data pages that have been changed in memory, |
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but the changes are not yet written (flushed) to the InnoDB data files', |
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), |
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'Key_reads' => array( |
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'desc' => 'Number of filesystem accesses MySQL performed to fetch database indexes.', |
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), |
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'Max_used_connections' => array( |
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'desc' => 'Max number of connections MySQL has had open at the same time since the server |
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was last restarted.', |
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), |
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'Open_tables' => array( |
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'desc' => 'Number of tables that are currently open.', |
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), |
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'Select_full_join' => array( |
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'desc' => 'Number of full joins MySQL has performed to satisfy client queries.', |
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), |
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'Slow_queries' => array( |
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'desc' => 'Number of queries that have taken longer than usual to execute.', |
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), |
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'Uptime' => array( |
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'desc' => 'Time since the server was last restarted.', |
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), |
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'Aborted_connects' => array( |
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'desc' => 'Total number of failed attempts to connect to MySQL.', |
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), |
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); |
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/** |
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* @var array |
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*/ |
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protected $_specialFormat = array( |
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'Uptime' => array('N98\Util\TimeElapsed', 'short'), |
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); |
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protected function configure() |
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{ |
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parent::configure(); |
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$this |
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->setName('db:status') |
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->setDescription('Shows important server status information or custom selected status values'); |
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$help = <<<HELP |
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This command is useful to print important server status information about the current database. |
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HELP; |
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$this->setHelp($help); |
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} |
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/** |
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* @param array $outputVars |
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* @param bool $hasDescription |
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* |
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* @return array |
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*/ |
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protected function generateRows(array $outputVars, $hasDescription) |
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{ |
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$rows = parent::generateRows($outputVars, $hasDescription); |
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if (false === $hasDescription) { |
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return $rows; |
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} |
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if (isset($this->_allVariables['Handler_read_rnd_next'])) { |
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$tableScanRate = ( |
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( |
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$this->_allVariables['Handler_read_rnd_next'] + |
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$this->_allVariables['Handler_read_rnd'] |
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) |
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/ |
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( |
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$this->_allVariables['Handler_read_rnd_next'] + |
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$this->_allVariables['Handler_read_rnd'] + |
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$this->_allVariables['Handler_read_first'] + |
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$this->_allVariables['Handler_read_next'] + |
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$this->_allVariables['Handler_read_key'] + |
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$this->_allVariables['Handler_read_prev'] |
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) |
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); |
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$rows[] = array( |
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'Full table scans', |
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sprintf('%.2f', $tableScanRate * 100) . '%', |
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$this->formatDesc( |
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'HINT: "Handler_read_rnd_next" is reset to zero when reached the value of 2^32 (4G).' |
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), |
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); |
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} |
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if (isset($this->_allVariables['Innodb_buffer_pool_read_requests'])) { |
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$bufferHitRate = $this->_allVariables['Innodb_buffer_pool_read_requests'] / |
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($this->_allVariables['Innodb_buffer_pool_read_requests'] + |
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$this->_allVariables['Innodb_buffer_pool_reads']); |
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$rows[] = array( |
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'InnoDB Buffer Pool hit', |
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sprintf('%.2f', $bufferHitRate * 100) . '%', |
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$this->formatDesc( |
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'An InnoDB Buffer Pool hit ratio below 99.9% is a weak indicator that your InnoDB Buffer Pool |
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could be increased.' |
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), |
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); |
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} |
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return $rows; |
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} |
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/** |
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* @param string $name |
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* |
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* @return bool |
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*/ |
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protected function allowRounding($name) |
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{ |
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$isSize = false !== strpos($name, '_size'); |
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return $isSize; |
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} |
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/** |
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* borrowed from <http://stackoverflow.com/questions/1416697/> |
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* |
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* echo time_elapsed_string('2013-05-01 00:22:35'); |
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* echo time_elapsed_string('@1367367755'); # timestamp input |
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* echo time_elapsed_string('2013-05-01 00:22:35', true); |
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* |
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* @param $datetime |
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* @param bool $full |
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* @deprecated since 1.3.2, use callback "N98\Util\TimeElapsed::short" instead |
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* @see \N98\Util\TimeElapsed::short() |
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* |
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* @return string |
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*/ |
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protected function timeElapsedString($datetime, $full = false) |
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{ |
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return $full ? TimeElapsed::full($datetime) : TimeElapsed::short($datetime); |
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} |
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} |
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netz98 /
n98-magerun2
