laipower/wp-content/plugins/w3-total-cache/UsageStatistics_Sources_Redis.php

130 lines
3.2 KiB
PHP

<?php
/**
* File: UsageStatistics_Sources_Redis.php
*
* @package W3TC
*/
namespace W3TC;
/**
* Usage Statistics Sources for Redis
*/
class UsageStatistics_Sources_Redis {
/**
* Servers.
*
* @var array
*/
private $servers;
/**
* Constructor.
*
* @param array $server_descriptors Server desriptors.
*/
public function __construct( $server_descriptors ) {
$this->servers = array();
foreach ( $server_descriptors as $i ) {
foreach ( $i['servers'] as $host_port ) {
if ( ! isset( $this->servers[ $host_port ] ) ) {
$this->servers[ $host_port ] = array(
'password' => $i['password'],
'dbid' => $i['dbid'],
'module_names' => array( $i['name'] ),
);
} else {
$this->servers[ $host_port ]['module_names'][] = $i['name'];
}
}
}
}
/**
* Get snapshot stats.
*/
public function get_snapshot() {
$size_used = 0;
$get_calls = 0;
$get_hits = 0;
foreach ( $this->servers as $host_port => $i ) {
$cache = Cache::instance(
'redis',
array(
'servers' => array( $host_port ),
'password' => $i['password'],
'dbid' => $i['dbid'],
'timeout' => 0,
'retry_interval' => 0,
'read_timeout' => 0,
)
);
$stats = $cache->get_statistics();
$size_used += Util_UsageStatistics::v( $stats, 'used_memory' );
$get_calls +=
Util_UsageStatistics::v3( $stats, 'keyspace_hits' ) +
Util_UsageStatistics::v3( $stats, 'keyspace_misses' );
$get_hits += Util_UsageStatistics::v( $stats, 'keyspace_hits' );
}
return array(
'size_used' => $size_used,
'get_calls' => $get_calls,
'get_hits' => $get_hits,
);
}
/**
* Get stats summary.
*/
public function get_summary() {
$sum = array(
'module_names' => array(),
'size_used' => 0,
'size_maxbytes' => 0,
'get_total' => 0,
'get_hits' => 0,
'evictions' => 0,
'uptime' => 0,
);
foreach ( $this->servers as $host_port => $i ) {
$cache = Cache::instance(
'redis',
array(
'servers' => array( $host_port ),
'password' => $i['password'],
'dbid' => $i['dbid'],
'timeout' => 0,
'retry_interval' => 0,
'read_timeout' => 0,
)
);
$stats = $cache->get_statistics();
$sum['module_names'] = array_merge( $sum['module_names'], $i['module_names'] );
$sum['size_used'] += Util_UsageStatistics::v3( $stats, 'used_memory' );
$sum['get_total'] +=
Util_UsageStatistics::v3( $stats, 'keyspace_hits' ) +
Util_UsageStatistics::v3( $stats, 'keyspace_misses' );
$sum['get_hits'] += Util_UsageStatistics::v3( $stats, 'keyspace_hits' );
$sum['evictions'] += Util_UsageStatistics::v3( $stats, 'evicted_keys' );
$sum['uptime'] += Util_UsageStatistics::v3( $stats, 'uptime_in_seconds' );
}
$summary = array(
'module_names' => implode( ',', $sum['module_names'] ),
'size_used' => Util_UsageStatistics::bytes_to_size2( $sum, 'size_used' ),
'get_hit_rate' => Util_UsageStatistics::percent2( $sum, 'get_hits', 'get_total' ),
'evictions_per_second' => Util_UsageStatistics::value_per_second( $sum, 'evictions', 'uptime' ),
);
return $summary;
}
}