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<?php
/**
* @link http://www.yiiframework.com/
* @copyright Copyright (c) 2008 Yii Software LLC
* @license http://www.yiiframework.com/license/
*/
namespace yii\debug;
use Yii;
use yii\base\InvalidConfigException;
use yii\helpers\FileHelper;
use yii\log\Target;
use Opis\Closure;
/**
* The debug LogTarget is used to store logs for later use in the debugger tool
*
* @author Qiang Xue <qiang.xue@gmail.com>
* @since 2.0
*/
class LogTarget extends Target
{
/**
* @var Module
*/
public $module;
/**
* @var string
*/
public $tag;
/**
* @param \yii\debug\Module $module
* @param array $config
*/
public function __construct($module, $config = [])
{
parent::__construct($config);
$this->module = $module;
$this->tag = uniqid();
}
/**
* Exports log messages to a specific destination.
* Child classes must implement this method.
* @throws \yii\base\Exception
*/
public function export()
{
$path = $this->module->dataPath;
FileHelper::createDirectory($path, $this->module->dirMode);
$summary = $this->collectSummary();
$dataFile = "$path/{$this->tag}.data";
$data = [];
$exceptions = [];
foreach ($this->module->panels as $id => $panel) {
try {
$panelData = $panel->save();
if ($id === 'profiling') {
$summary['peakMemory'] = $panelData['memory'];
$summary['processingTime'] = $panelData['time'];
}
$data[$id] = Closure\serialize($panelData);
} catch (\Exception $exception) {
$exceptions[$id] = new FlattenException($exception);
}
}
$data['summary'] = $summary;
$data['exceptions'] = $exceptions;
file_put_contents($dataFile, Closure\serialize($data));
if ($this->module->fileMode !== null) {
@chmod($dataFile, $this->module->fileMode);
}
$indexFile = "$path/index.data";
$this->updateIndexFile($indexFile, $summary);
}
/**
* Updates index file with summary log data
*
* @param string $indexFile path to index file
* @param array $summary summary log data
* @throws \yii\base\InvalidConfigException
*/
private function updateIndexFile($indexFile, $summary)
{
if (!@touch($indexFile) || ($fp = @fopen($indexFile, 'r+')) === false) {
throw new InvalidConfigException("Unable to open debug data index file: $indexFile");
}
@flock($fp, LOCK_EX);
$manifest = '';
while (($buffer = fgets($fp)) !== false) {
$manifest .= $buffer;
}
if (!feof($fp) || empty($manifest)) {
// error while reading index data, ignore and create new
$manifest = [];
} else {
$manifest = Closure\unserialize($manifest);
}
$manifest[$this->tag] = $summary;
$this->gc($manifest);
ftruncate($fp, 0);
rewind($fp);
fwrite($fp, Closure\serialize($manifest));
@flock($fp, LOCK_UN);
@fclose($fp);
if ($this->module->fileMode !== null) {
@chmod($indexFile, $this->module->fileMode);
}
}
/**
* Processes the given log messages.
* This method will filter the given messages with [[levels]] and [[categories]].
* And if requested, it will also export the filtering result to specific medium (e.g. email).
* @param array $messages log messages to be processed. See [[\yii\log\Logger::messages]] for the structure
* of each message.
* @param bool $final whether this method is called at the end of the current application
* @throws \yii\base\Exception
*/
public function collect($messages, $final)
{
$this->messages = array_merge($this->messages, $messages);
if ($final) {
$this->export();
}
}
/**
* Removes obsolete data files
* @param array $manifest
*/
protected function gc(&$manifest)
{
if (count($manifest) > $this->module->historySize + 10) {
$n = count($manifest) - $this->module->historySize;
foreach (array_keys($manifest) as $tag) {
$file = $this->module->dataPath . "/$tag.data";
@unlink($file);
if (isset($manifest[$tag]['mailFiles'])) {
foreach ($manifest[$tag]['mailFiles'] as $mailFile) {
@unlink(Yii::getAlias($this->module->panels['mail']->mailPath) . "/$mailFile");
}
}
unset($manifest[$tag]);
if (--$n <= 0) {
break;
}
}
$this->removeStaleDataFiles($manifest);
}
}
/**
* Remove staled data files i.e. files that are not in the current index file
* (may happen because of corrupted or rotated index file)
*
* @param array $manifest
* @since 2.0.11
*/
protected function removeStaleDataFiles($manifest)
{
$storageTags = array_map(
function ($file) {
return pathinfo($file, PATHINFO_FILENAME);
},
FileHelper::findFiles($this->module->dataPath, ['except' => ['index.data']])
);
$staledTags = array_diff($storageTags, array_keys($manifest));
foreach ($staledTags as $tag) {
@unlink($this->module->dataPath . "/$tag.data");
}
}
/**
* Collects summary data of current request.
* @return array
*/
protected function collectSummary()
{
if (Yii::$app === null) {
return [];
}
$request = Yii::$app->getRequest();
$response = Yii::$app->getResponse();
$summary = [
'tag' => $this->tag,
'url' => $request->getAbsoluteUrl(),
'ajax' => (int) $request->getIsAjax(),
'method' => $request->getMethod(),
'ip' => $request->getUserIP(),
'time' => $_SERVER['REQUEST_TIME_FLOAT'],
'statusCode' => $response->statusCode,
'sqlCount' => $this->getSqlTotalCount(),
];
if (isset($this->module->panels['mail'])) {
$mailFiles = $this->module->panels['mail']->getMessagesFileName();
$summary['mailCount'] = count($mailFiles);
$summary['mailFiles'] = $mailFiles;
}
return $summary;
}
/**
* Returns total sql count executed in current request. If database panel is not configured
* returns 0.
* @return int
*/
protected function getSqlTotalCount()
{
if (!isset($this->module->panels['db'])) {
return 0;
}
$profileLogs = $this->module->panels['db']->getProfileLogs();
# / 2 because messages are in couple (begin/end)
return count($profileLogs) / 2;
}
}