67 lines
1.7 KiB
PHP
67 lines
1.7 KiB
PHP
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<?php
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namespace W3TC;
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/**
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* Manages data statistics.
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* Metrics:
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*
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*/
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class UsageStatistics_StorageReader {
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private $items_to_return = 60;
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public function get_history_summary() {
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$w = new UsageStatistics_StorageWriter();
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$w->maybe_flush_hotspot_data();
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$history_encoded = get_site_option( 'w3tc_stats_history' );
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$history = null;
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if ( !empty( $history_encoded ) )
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$history = json_decode( $history_encoded, true );
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if ( !is_array( $history ) )
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$history = array();
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$summary = array(
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'memcached_servers' => array(),
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'redis_servers' => array(),
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'apc_servers' => array()
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);
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$summary = apply_filters( 'w3tc_usage_statistics_sources', $summary );
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if ( count( $history ) <= 0 ) {
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$summary = array( 'period' => array() );
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} else {
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$timestamp_start = $history[0]['timestamp_start'];
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$timestamp_end = $history[count( $history ) - 1]['timestamp_end'];
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$period = array(
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'timestamp_start' => $timestamp_start,
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'timestamp_start_mins' =>
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Util_UsageStatistics::time_mins( $timestamp_start ),
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'timestamp_end' => $timestamp_end,
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'timestamp_end_mins' =>
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Util_UsageStatistics::time_mins( $timestamp_end ),
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);
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$period['seconds'] = $timestamp_end - $timestamp_start;
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$summary['period'] = $period;
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$summary['timeout_time'] = time() + 15;
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$summary = apply_filters( 'w3tc_usage_statistics_summary_from_history',
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$summary, $history );
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}
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$summary['period']['to_update_secs'] = (int)$w->get_hotspot_end() - time() + 1;
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unset( $summary['memcached_servers'] );
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unset( $summary['redis_servers'] );
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while ( count($history) < $this->items_to_return ) {
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array_unshift( $history, array() );
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}
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$summary['history'] = $history;
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return $summary;
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}
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}
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