101 lines
2.3 KiB
PHP
Executable File
101 lines
2.3 KiB
PHP
Executable File
<?php
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/**
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* Statistics handler class.
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*
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* This class is responsible for taking a statistics event and logging it.
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*
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* @package SimpleSAMLphp
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*/
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class SimpleSAML_Stats
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{
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/**
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* Whether this class is initialized.
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*
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* @var boolean
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*/
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private static $initialized = false;
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/**
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* The statistics output callbacks.
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*
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* @var array
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*/
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private static $outputs = null;
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/**
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* Create an output from a configuration object.
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*
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* @param SimpleSAML_Configuration $config The configuration object.
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*
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* @return mixed A new instance of the configured class.
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*/
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private static function createOutput(SimpleSAML_Configuration $config)
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{
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$cls = $config->getString('class');
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$cls = SimpleSAML\Module::resolveClass($cls, 'Stats_Output', 'SimpleSAML_Stats_Output');
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$output = new $cls($config);
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return $output;
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}
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/**
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* Initialize the outputs.
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*/
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private static function initOutputs()
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{
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$config = SimpleSAML_Configuration::getInstance();
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$outputCfgs = $config->getConfigList('statistics.out', array());
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self::$outputs = array();
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foreach ($outputCfgs as $cfg) {
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self::$outputs[] = self::createOutput($cfg);
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}
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}
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/**
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* Notify about an event.
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*
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* @param string $event The event.
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* @param array $data Event data. Optional.
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*
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* @return void|boolean False if output is not enabled, void otherwise.
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*/
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public static function log($event, array $data = array())
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{
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assert(is_string($event));
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assert(!isset($data['op']));
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assert(!isset($data['time']));
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assert(!isset($data['_id']));
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if (!self::$initialized) {
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self::initOutputs();
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self::$initialized = true;
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}
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if (empty(self::$outputs)) {
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// not enabled
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return;
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}
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$data['op'] = $event;
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$data['time'] = microtime(true);
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// the ID generation is designed to cluster IDs related in time close together
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$int_t = (int) $data['time'];
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$hd = openssl_random_pseudo_bytes(16);
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$data['_id'] = sprintf('%016x%s', $int_t, bin2hex($hd));
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foreach (self::$outputs as $out) {
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$out->emit($data);
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}
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}
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}
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