Viewing file:  ServerStatusData.class.php (16.33 KB) -rw-r--r--
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<?php
/* vim: set expandtab sw=4 ts=4 sts=4: */
/**
* PMA_ServerStatusData class
* Used by server_status_*.php pages
*
* @package PhpMyAdmin
*/
if (! defined('PHPMYADMIN')) {
exit;
}
/**
* This class provides data about the server status
*
* All properties of the class are read-only
*
* TODO: Use lazy initialisation for some of the properties
* since not all of the server_status_*.php pages need
* all the data that this class provides.
*
* @package PhpMyAdmin
*/
class PMA_ServerStatusData
{
public $status;
public $sections;
public $variables;
public $used_queries;
public $allocationMap;
public $links;
public $db_isLocal;
public $section;
public $sectionUsed;
public $selfUrl;
public $dataLoaded;
/**
* An empty setter makes the above properties read-only
*
* @param string $a key
* @param mixed $b value
*
* @return void
*/
public function __set($a, $b)
{
// Discard everything
}
/**
* Gets the allocations for constructor
*
* @return array
*/
private function _getAllocations()
{
return array(
// variable name => section
// variable names match when they begin with the given string
'Com_' => 'com',
'Innodb_' => 'innodb',
'Ndb_' => 'ndb',
'Handler_' => 'handler',
'Qcache_' => 'qcache',
'Threads_' => 'threads',
'Slow_launch_threads' => 'threads',
'Binlog_cache_' => 'binlog_cache',
'Created_tmp_' => 'created_tmp',
'Key_' => 'key',
'Delayed_' => 'delayed',
'Not_flushed_delayed_rows' => 'delayed',
'Flush_commands' => 'query',
'Last_query_cost' => 'query',
'Slow_queries' => 'query',
'Queries' => 'query',
'Prepared_stmt_count' => 'query',
'Select_' => 'select',
'Sort_' => 'sort',
'Open_tables' => 'table',
'Opened_tables' => 'table',
'Open_table_definitions' => 'table',
'Opened_table_definitions' => 'table',
'Table_locks_' => 'table',
'Rpl_status' => 'repl',
'Slave_' => 'repl',
'Tc_' => 'tc',
'Ssl_' => 'ssl',
'Open_files' => 'files',
'Open_streams' => 'files',
'Opened_files' => 'files',
);
}
/**
* Gets the sections for constructor
*
* @return array
*/
private function _getSections()
{
return array(
// section => section name (description)
'com' => 'Com',
'query' => __('SQL query'),
'innodb' => 'InnoDB',
'ndb' => 'NDB',
'handler' => __('Handler'),
'qcache' => __('Query cache'),
'threads' => __('Threads'),
'binlog_cache' => __('Binary log'),
'created_tmp' => __('Temporary data'),
'delayed' => __('Delayed inserts'),
'key' => __('Key cache'),
'select' => __('Joins'),
'repl' => __('Replication'),
'sort' => __('Sorting'),
'table' => __('Tables'),
'tc' => __('Transaction coordinator'),
'files' => __('Files'),
'ssl' => 'SSL',
'other' => __('Other')
);
}
/**
* Gets the links for constructor
*
* @return array
*/
private function _getLinks()
{
$links = array();
// variable or section name => (name => url)
$links['table'][__('Flush (close) all tables')] = $this->selfUrl
. PMA_URL_getCommon(
array(
'flush' => 'TABLES'
)
);
$links['table'][__('Show open tables')]
= 'sql.php' . PMA_URL_getCommon(
array(
'sql_query' => 'SHOW OPEN TABLES',
'goto' => $this->selfUrl,
)
);
if ($GLOBALS['replication_info']['master']['status']) {
$links['repl'][__('Show slave hosts')]
= 'sql.php' . PMA_URL_getCommon(
array(
'sql_query' => 'SHOW SLAVE HOSTS',
'goto' => $this->selfUrl,
)
);
$links['repl'][__('Show master status')] = '#replication_master';
}
if ($GLOBALS['replication_info']['slave']['status']) {
$links['repl'][__('Show slave status')] = '#replication_slave';
}
$links['repl']['doc'] = 'replication';
$links['qcache'][__('Flush query cache')]
= $this->selfUrl
. PMA_URL_getCommon(
array(
'flush' => 'QUERY CACHE'
)
);
$links['qcache']['doc'] = 'query_cache';
$links['threads']['doc'] = 'mysql_threads';
$links['key']['doc'] = 'myisam_key_cache';
$links['binlog_cache']['doc'] = 'binary_log';
$links['Slow_queries']['doc'] = 'slow_query_log';
$links['innodb'][__('Variables')]
= 'server_engines.php?engine=InnoDB&'
. PMA_URL_getCommon(array(), 'html', '');
$links['innodb'][__('InnoDB Status')]
= 'server_engines.php'
. PMA_URL_getCommon(
array(
'engine' => 'InnoDB',
'page' => 'Status'
)
);
$links['innodb']['doc'] = 'innodb';
return($links);
}
/**
* Calculate some values
*
* @param array $server_status contains results of SHOW GLOBAL STATUS
* @param array $server_variables contains results of SHOW GLOBAL VARIABLES
*
* @return array $server_status
*/
private function _calculateValues($server_status, $server_variables)
{
// Key_buffer_fraction
if (isset($server_status['Key_blocks_unused'])
&& isset($server_variables['key_cache_block_size'])
&& isset($server_variables['key_buffer_size'])
) {
$server_status['Key_buffer_fraction_%']
= 100
- $server_status['Key_blocks_unused']
* $server_variables['key_cache_block_size']
/ $server_variables['key_buffer_size']
* 100;
} elseif (isset($server_status['Key_blocks_used'])
&& isset($server_variables['key_buffer_size'])
) {
$server_status['Key_buffer_fraction_%']
= $server_status['Key_blocks_used']
* 1024
/ $server_variables['key_buffer_size'];
}
// Ratio for key read/write
if (isset($server_status['Key_writes'])
&& isset($server_status['Key_write_requests'])
&& $server_status['Key_write_requests'] > 0
) {
$key_writes = $server_status['Key_writes'];
$key_write_requests = $server_status['Key_write_requests'];
$server_status['Key_write_ratio_%']
= 100 * $key_writes / $key_write_requests;
}
if (isset($server_status['Key_reads'])
&& isset($server_status['Key_read_requests'])
&& $server_status['Key_read_requests'] > 0
) {
$key_reads = $server_status['Key_reads'];
$key_read_requests = $server_status['Key_read_requests'];
$server_status['Key_read_ratio_%']
= 100 * $key_reads / $key_read_requests;
}
// Threads_cache_hitrate
if (isset($server_status['Threads_created'])
&& isset($server_status['Connections'])
&& $server_status['Connections'] > 0
) {
$server_status['Threads_cache_hitrate_%']
= 100 - $server_status['Threads_created']
/ $server_status['Connections'] * 100;
}
return $server_status;
}
/**
* Sort variables into arrays
*
* @param array $server_status contains results of SHOW GLOBAL STATUS
* @param array $allocations allocations for sections
* @param array $allocationMap map variables to their section
* @param array $sectionUsed is a section used?
* @param array $used_queries used queries
*
* @return array ($allocationMap, $sectionUsed, $used_queries)
*/
private function _sortVariables(
$server_status, $allocations, $allocationMap, $sectionUsed,
$used_queries
) {
foreach ($server_status as $name => $value) {
$section_found = false;
foreach ($allocations as $filter => $section) {
if (/*overload*/mb_strpos($name, $filter) !== false) {
$allocationMap[$name] = $section;
$sectionUsed[$section] = true;
$section_found = true;
if ($section == 'com' && $value > 0) {
$used_queries[$name] = $value;
}
break; // Only exits inner loop
}
}
if (! $section_found) {
$allocationMap[$name] = 'other';
$sectionUsed['other'] = true;
}
}
return array($allocationMap, $sectionUsed, $used_queries);
}
/**
* Constructor
*/
public function __construct()
{
$this->selfUrl = basename($GLOBALS['PMA_PHP_SELF']);
// get status from server
$server_status_result = $GLOBALS['dbi']->tryQuery('SHOW GLOBAL STATUS');
$server_status = array();
if ($server_status_result === false) {
$this->dataLoaded = false;
} else {
$this->dataLoaded = true;
while ($arr = $GLOBALS['dbi']->fetchRow($server_status_result)) {
$server_status[$arr[0]] = $arr[1];
}
$GLOBALS['dbi']->freeResult($server_status_result);
}
if (PMA_DRIZZLE) {
// Drizzle doesn't put query statistics into variables, add it
$sql = "SELECT concat('Com_', variable_name), variable_value "
. "FROM data_dictionary.GLOBAL_STATEMENTS";
$statements = $GLOBALS['dbi']->fetchResult($sql, 0, 1);
$server_status = array_merge($server_status, $statements);
}
// for some calculations we require also some server settings
$server_variables = $GLOBALS['dbi']->fetchResult(
'SHOW GLOBAL VARIABLES', 0, 1
);
// cleanup of some deprecated values
$server_status = self::cleanDeprecated($server_status);
// calculate some values
$server_status = $this->_calculateValues(
$server_status, $server_variables
);
// split variables in sections
$allocations = $this->_getAllocations();
$sections = $this->_getSections();
// define some needful links/commands
$links = $this->_getLinks();
// Variable to contain all com_ variables (query statistics)
$used_queries = array();
// Variable to map variable names to their respective section name
// (used for js category filtering)
$allocationMap = array();
// Variable to mark used sections
$sectionUsed = array();
// sort vars into arrays
list(
$allocationMap, $sectionUsed, $used_queries
) = $this->_sortVariables(
$server_status, $allocations, $allocationMap, $sectionUsed,
$used_queries
);
if (PMA_DRIZZLE) {
$used_queries = $GLOBALS['dbi']->fetchResult(
'SELECT * FROM data_dictionary.global_statements',
0,
1
);
unset($used_queries['admin_commands']);
} else {
// admin commands are not queries (e.g. they include COM_PING,
// which is excluded from $server_status['Questions'])
unset($used_queries['Com_admin_commands']);
}
// Set all class properties
$this->db_isLocal = false;
$serverHostToLower = /*overload*/mb_strtolower(
$GLOBALS['cfg']['Server']['host']
);
if ($serverHostToLower === 'localhost'
|| $GLOBALS['cfg']['Server']['host'] === '127.0.0.1'
|| $GLOBALS['cfg']['Server']['host'] === '::1'
) {
$this->db_isLocal = true;
}
$this->status = $server_status;
$this->sections = $sections;
$this->variables = $server_variables;
$this->used_queries = $used_queries;
$this->allocationMap = $allocationMap;
$this->links = $links;
$this->sectionUsed = $sectionUsed;
}
/**
* cleanup of some deprecated values
*
* @param array $server_status status array to process
*
* @return array
*/
public static function cleanDeprecated($server_status)
{
$deprecated = array(
'Com_prepare_sql' => 'Com_stmt_prepare',
'Com_execute_sql' => 'Com_stmt_execute',
'Com_dealloc_sql' => 'Com_stmt_close',
);
foreach ($deprecated as $old => $new) {
if (isset($server_status[$old]) && isset($server_status[$new])) {
unset($server_status[$old]);
}
}
return $server_status;
}
/**
* Generates menu HTML
*
* @return string
*/
public function getMenuHtml()
{
$url_params = PMA_URL_getCommon();
$items = array(
array(
'name' => __('Server'),
'url' => 'server_status.php'
),
array(
'name' => __('Processes'),
'url' => 'server_status_processes.php'
),
array(
'name' => __('Query statistics'),
'url' => 'server_status_queries.php'
),
array(
'name' => __('All status variables'),
'url' => 'server_status_variables.php'
),
array(
'name' => __('Monitor'),
'url' => 'server_status_monitor.php'
),
array(
'name' => __('Advisor'),
'url' => 'server_status_advisor.php'
)
);
$retval = '<ul id="topmenu2">';
foreach ($items as $item) {
$class = '';
if ($item['url'] === $this->selfUrl) {
$class = ' class="tabactive"';
}
$retval .= '<li>';
$retval .= '<a' . $class;
$retval .= ' href="' . $item['url'] . $url_params . '">';
$retval .= $item['name'];
$retval .= '</a>';
$retval .= '</li>';
}
$retval .= '</ul>';
$retval .= '<div class="clearfloat"></div>';
return $retval;
}
/**
* Builds a <select> list for refresh rates
*
* @param string $name Name of select
* @param int $defaultRate Currently chosen rate
* @param array $refreshRates List of refresh rates
*
* @return string
*/
public static function getHtmlForRefreshList($name,
$defaultRate = 5,
$refreshRates = Array(1, 2, 5, 10, 20, 40, 60, 120, 300, 600)
) {
$return = '<select name="' . $name . '" id="id_' . $name
. '" class="refreshRate">';
foreach ($refreshRates as $rate) {
$selected = ($rate == $defaultRate)?' selected="selected"':'';
$return .= '<option value="' . $rate . '"' . $selected . '>';
if ($rate < 60) {
$return .= sprintf(
_ngettext('%d second', '%d seconds', $rate), $rate
);
} else {
$rate = $rate / 60;
$return .= sprintf(
_ngettext('%d minute', '%d minutes', $rate), $rate
);
}
$return .= '</option>';
}
$return .= '</select>';
return $return;
}
}
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