<?php
namespace W3TC;


class UsageStatistics_Plugin {
	public function run() {
		$core = Dispatcher::component( 'UsageStatistics_Core' );
		$core->add_shutdown_handler();

		// usage default statistics handling
		add_action( 'w3tc_usage_statistics_of_request', array(
				$this, 'w3tc_usage_statistics_of_request' ), 10, 1 );
		add_filter( 'w3tc_usage_statistics_metrics', array(
				$this, 'w3tc_usage_statistics_metrics' ) );
	}


	public function w3tc_usage_statistics_of_request( $storage ) {
		$used_100kb = memory_get_peak_usage( true ) / 1024 / 10.24;

		$storage->counter_add( 'php_memory_100kb', $used_100kb );
		$storage->counter_add( 'php_requests', 1 );
	}


	public function w3tc_usage_statistics_metrics( $metrics ) {
		return array_merge( $metrics, array(
				'php_memory_100kb', 'php_requests' ) );
	}
}