81 lines
1.6 KiB
PHP
81 lines
1.6 KiB
PHP
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<?php
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namespace W3TC;
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class UsageStatistics_Core {
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private $shutdown_handler_added = false;
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private $storage;
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private $hotspot_flushing_state_on_exit_attempt = null;
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public function __construct() {
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$this->storage = new UsageStatistics_StorageWriter();
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}
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public function add_shutdown_handler() {
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$this->shutdown_handler_added = true;
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add_action( 'shutdown', array(
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$this,
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'shutdown'
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), 100000, 0 );
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if ( !is_null( $this->hotspot_flushing_state_on_exit_attempt ) )
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add_action( 'init', array(
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$this, 'init_when_exit_requested' ) );
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}
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public function is_shutdown_handler_added() {
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return $this->shutdown_handler_added;
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}
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public function init_when_exit_requested() {
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exit();
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}
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public function shutdown() {
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if ( !is_null( $this->hotspot_flushing_state_on_exit_attempt ) )
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$this->storage->finish_flush_hotspot_data();
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else
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$this->storage->maybe_flush_hotspot_data();
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do_action( 'w3tc_usage_statistics_of_request', $this->storage );
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}
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/**
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* $metrics_function has to be added by add_action on plugin load
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*/
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public function apply_metrics_before_init_and_exit( $metrics_function ) {
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// plugin already loaded, metrics will be added normal way
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// by shutdown
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if ( $this->shutdown_handler_added ) {
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return;
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}
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$this->hotspot_flushing_state_on_exit_attempt =
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$this->storage->begin_flush_hotspot_data();
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// flush wants to happen in that process, need to pass through whole
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// wp request processing further
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if ( $this->hotspot_flushing_state_on_exit_attempt != 'not_needed' ) {
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return;
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}
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call_user_func( $metrics_function, $this->storage );
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exit();
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}
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}
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