[PHP-FPM] Use php script instead of sql event to clean sasl_log table

data/cron/phpfpm/clear_sasl_log.php

@@ -0,0 +1,106 @@
+<?php
+require_once "/web/inc/vars.inc.php";
+if (file_exists('/web/inc/vars.local.inc.php')) {
+  include_once('/web/inc/vars.local.inc.php');
+}
+ini_set('error_reporting', 0);
+// Init database
+//$dsn = $database_type . ':host=' . $database_host . ';dbname=' . $database_name;
+$dsn = $database_type . ":unix_socket=" . $database_sock . ";dbname=" . $database_name;
+$opt = [
+  PDO::ATTR_ERRMODE            => PDO::ERRMODE_EXCEPTION,
+  PDO::ATTR_DEFAULT_FETCH_MODE => PDO::FETCH_ASSOC,
+  PDO::ATTR_EMULATE_PREPARES   => false,
+];
+try {
+  $pdo = new PDO($dsn, $database_user, $database_pass, $opt);
+}
+catch (PDOException $e) {
+  echo($e->getMessage() . PHP_EOL);
+  exit;
+}
+
+
+try {
+  $dateThreshold = new DateTime();
+  $dateThreshold->modify('-31 days');
+  $dateThresholdFormatted = $dateThreshold->format('Y-m-d H:i:s');
+
+  $batchSize = 1000;
+  $lastProcessedDatetime = null;
+  $lastFetchedRows = 0;
+  $loopCounter = 0;
+  $rowCounter = 0;
+  $clearedRowCounter = 0;
+
+  do {
+    $loopCounter++;
+    echo("Processing batch $loopCounter\n");
+
+    $stmt = $pdo->prepare("
+      SELECT service, real_rip, username, datetime
+      FROM sasl_log
+      WHERE datetime < :dateThreshold
+      AND (:lastProcessedDatetime IS NULL OR datetime >= :lastProcessedDatetime2)
+      ORDER BY datetime ASC
+      LIMIT :limit
+    ");
+    $stmt->execute(array(
+      ':dateThreshold' => $dateThresholdFormatted,
+      ':lastProcessedDatetime' => $lastProcessedDatetime,
+      ':lastProcessedDatetime2' => $lastProcessedDatetime,
+      ':limit' => $batchSize
+    ));
+
+    $rows = $stmt->fetchAll(PDO::FETCH_ASSOC);
+    $rowCount = count($rows);
+    $rowCounter += $rowCount;
+
+    echo("Fetched $rowCount rows (total of $rowCounter)\n");
+
+    foreach ($rows as $row) {
+      $stmt = $pdo->prepare("
+        SELECT MAX(datetime) as max_date
+        FROM sasl_log
+        WHERE datetime < :dateThreshold AND service = :service AND username = :username
+      ");
+      $stmt->execute(array(
+        ':dateThreshold' => $dateThresholdFormatted,
+        ':service' => $row['service'],
+        ':username' => $row['username']
+      ));
+      $subrow = $stmt->fetch(PDO::FETCH_ASSOC);
+
+      if ($row['datetime'] < $subrow['max_date']) {
+        $stmt = $pdo->prepare("
+          DELETE FROM sasl_log
+          WHERE username = :username AND service = :service AND datetime = :datetime
+        ");
+        $stmt->execute(array(
+          ':username' => $row['username'],
+          ':service' => $row['service'],
+          ':datetime' => $row['datetime']
+        ));
+
+        $clearedRowCounter++;
+      }
+    }
+
+    if ($lastFetchedRows == $rowCount && $rowCount != $batchSize) {
+      $rowCount = 0;
+    }
+
+    // Update last processed datetime
+    if ($rowCount > 0) {
+      $lastProcessedDatetime = $rows[$rowCount - 1]['datetime'];
+      $lastFetchedRows = $rowCount;
+    }
+
+  } while ($rowCount > 0);
+}
+catch (PDOException $e) {
+  echo($e->getMessage() . PHP_EOL);
+  exit;
+}
+
+echo("Succesfully cleared $clearedRowCounter rows of $rowCounter rows");