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