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<?php
namespace SimpleSAML\Module\statistics;
use SimpleSAML\Configuration;
/**
* @author Andreas Åkre Solberg <andreas.solberg@uninett.no>
* @package SimpleSAMLphp
*/
class LogCleaner
{
/** @var \SimpleSAML\Configuration */
private $statconfig;
/** @var string */
private $statdir;
/** @var string */
private $inputfile;
/** @var array */
private $statrules;
/** @var int */
private $offset;
/**
* Constructor
*
* @param string|null $inputfile
*/
public function __construct($inputfile = null)
{
$this->statconfig = Configuration::getConfig('module_statistics.php');
$this->statdir = $this->statconfig->getValue('statdir');
$this->inputfile = $this->statconfig->getValue('inputfile');
$this->statrules = $this->statconfig->getValue('statrules');
$this->offset = $this->statconfig->getValue('offset', 0);
if (isset($inputfile)) {
$this->inputfile = $inputfile;
}
}
/**
* @return void
*/
public function dumpConfig()
{
echo 'Statistics directory : ' . $this->statdir . "\n";
echo 'Input file : ' . $this->inputfile . "\n";
echo 'Offset : ' . $this->offset . "\n";
}
/**
* @param bool $debug
* @return array
* @throws \Exception
*/
public function clean($debug = false)
{
if (!is_dir($this->statdir)) {
throw new \Exception('Statistics module: output dir do not exists [' . $this->statdir . ']');
}
if (!file_exists($this->inputfile)) {
throw new \Exception('Statistics module: input file do not exists [' . $this->inputfile . ']');
}
$file = fopen($this->inputfile, 'r');
$logparser = new LogParser(
$this->statconfig->getValue('datestart', 0),
$this->statconfig->getValue('datelength', 15),
$this->statconfig->getValue('offsetspan', 44)
);
$sessioncounter = [];
$i = 0;
// Parse through log file, line by line
while (!feof($file)) {
$logline = fgets($file, 4096);
// Continue if STAT is not found on line
if (!preg_match('/STAT/', $logline)) {
continue;
}
$i++;
// Parse log, and extract epoch time and rest of content.
$epoch = $logparser->parseEpoch($logline);
$content = $logparser->parseContent($logline);
if (($i % 10000) == 0) {
echo "Read line " . $i . "\n";
}
$trackid = $content[4];
if (!isset($sessioncounter[$trackid])) {
$sessioncounter[$trackid] = 0;
}
$sessioncounter[$trackid]++;
if ($debug) {
echo "----------------------------------------\n";
echo 'Log line: ' . $logline . "\n";
echo 'Date parse [' . substr($logline, 0, $this->statconfig->getValue('datelength', 15)) .
'] to [' . date(DATE_RFC822, $epoch) . ']' . "\n";
/** @var string $ret */
$ret = print_r($content, true);
echo htmlentities($ret);
if ($i >= 13) {
exit;
}
}
}
$histogram = [];
foreach ($sessioncounter as $trackid => $sc) {
if (!isset($histogram[$sc])) {
$histogram[$sc] = 0;
}
$histogram[$sc]++;
}
ksort($histogram);
$todelete = [];
foreach ($sessioncounter as $trackid => $sc) {
if ($sc > 200) {
$todelete[] = $trackid;
}
}
return $todelete;
}
/**
* @param array $todelete
* @param string $outputfile
* @return void
* @throws \Exceeption
*/
public function store(array $todelete, $outputfile)
{
echo "Preparing to delete [" . count($todelete) . "] trackids\n";
if (!is_dir($this->statdir)) {
throw new \Exception('Statistics module: output dir do not exists [' . $this->statdir . ']');
}
if (!file_exists($this->inputfile)) {
throw new \Exception('Statistics module: input file do not exists [' . $this->inputfile . ']');
}
$file = fopen($this->inputfile, 'r');
// Open the output file in a way that guarantees that we will not overwrite a random file.
if (file_exists($outputfile)) {
// Delete existing output file.
unlink($outputfile);
}
$outfile = fopen($outputfile, 'x'); // Create the output file
$logparser = new LogParser(
$this->statconfig->getValue('datestart', 0),
$this->statconfig->getValue('datelength', 15),
$this->statconfig->getValue('offsetspan', 44)
);
$i = 0;
// Parse through log file, line by line
while (!feof($file)) {
$logline = fgets($file, 4096);
// Continue if STAT is not found on line.
if (!preg_match('/STAT/', $logline)) {
continue;
}
$i++;
$content = $logparser->parseContent($logline);
if (($i % 10000) == 0) {
echo "Read line " . $i . "\n";
}
$trackid = $content[4];
if (in_array($trackid, $todelete, true)) {
continue;
}
fputs($outfile, $logline);
}
fclose($file);
fclose($outfile);
}
}
|
