From e6c195f657c317e0abf8846c8d2ab86e36f6af65 Mon Sep 17 00:00:00 2001
From: Terranom674 <thomas_dannenberg@web.de>
Date: Sat, 15 Aug 2026 20:23:59 +0200
Subject: [PATCH] Add adaptive cache worker settings

---
 include/cache_worker_settings.inc.php | 132 ++++++++++++++++++++++++++
 1 file changed, 132 insertions(+)
 create mode 100644 include/cache_worker_settings.inc.php

diff --git a/include/cache_worker_settings.inc.php b/include/cache_worker_settings.inc.php
new file mode 100644
index 0000000..44334c1
--- /dev/null
+++ b/include/cache_worker_settings.inc.php
@@ -0,0 +1,132 @@
+<?php
+if (!defined('PHPWG_ROOT_PATH'))
+{
+  die('Hacking attempt!');
+}
+
+function bratonien_tools_cache_worker_settings_file()
+{
+  return PHPWG_ROOT_PATH.PWG_LOCAL_DIR.'bratonien-tools-cache-workers.json';
+}
+
+function bratonien_tools_count_cpu_list($value)
+{
+  $count = 0;
+  foreach (explode(',', trim((string)$value)) as $part)
+  {
+    $part = trim($part);
+    if ($part === '')
+    {
+      continue;
+    }
+    if (preg_match('/^(\d+)-(\d+)$/', $part, $m))
+    {
+      $start = (int)$m[1];
+      $end = (int)$m[2];
+      if ($end >= $start)
+      {
+        $count += $end - $start + 1;
+      }
+    }
+    elseif (ctype_digit($part))
+    {
+      $count++;
+    }
+  }
+  return $count;
+}
+
+function bratonien_tools_detect_available_cpu_count()
+{
+  $counts = array();
+
+  $status = @file_get_contents('/proc/self/status');
+  if ($status !== false && preg_match('/^Cpus_allowed_list:\s*(.+)$/mi', $status, $m))
+  {
+    $allowed = bratonien_tools_count_cpu_list($m[1]);
+    if ($allowed > 0)
+    {
+      $counts[] = $allowed;
+    }
+  }
+
+  foreach (array('/usr/bin/nproc', '/bin/nproc') as $candidate)
+  {
+    if (!is_file($candidate) || !is_executable($candidate) || !function_exists('exec'))
+    {
+      continue;
+    }
+    $output = array();
+    $exit = 1;
+    @exec(escapeshellarg($candidate).' 2>/dev/null', $output, $exit);
+    if ($exit === 0 && isset($output[0]) && ctype_digit(trim($output[0])))
+    {
+      $nproc = (int)trim($output[0]);
+      if ($nproc > 0)
+      {
+        $counts[] = $nproc;
+      }
+    }
+    break;
+  }
+
+  return empty($counts) ? 1 : max(1, min($counts));
+}
+
+function bratonien_tools_get_cache_worker_settings()
+{
+  $settings = array(
+    'auto'=>true,
+    'manual_workers'=>6,
+    'factor'=>1.0,
+    'max_workers'=>32,
+  );
+
+  $file = bratonien_tools_cache_worker_settings_file();
+  if (is_file($file) && is_readable($file))
+  {
+    $raw = @file_get_contents($file);
+    $saved = $raw !== false ? json_decode($raw, true) : null;
+    if (is_array($saved))
+    {
+      if (array_key_exists('auto', $saved))
+      {
+        $settings['auto'] = (bool)$saved['auto'];
+      }
+      if (isset($saved['manual_workers']))
+      {
+        $settings['manual_workers'] = max(1, min(32, (int)$saved['manual_workers']));
+      }
+    }
+  }
+
+  $settings['cpu_count'] = bratonien_tools_detect_available_cpu_count();
+  $settings['auto_workers'] = max(1, min($settings['max_workers'], $settings['cpu_count']));
+  $settings['worker_count'] = $settings['auto'] ? $settings['auto_workers'] : $settings['manual_workers'];
+  return $settings;
+}
+
+function bratonien_tools_save_cache_worker_settings()
+{
+  $auto = !empty($_POST['cache_workers_auto']);
+  $manual = isset($_POST['cache_workers_manual']) ? (int)$_POST['cache_workers_manual'] : 6;
+  $manual = max(1, min(32, $manual));
+
+  $json = json_encode(array('auto'=>$auto, 'manual_workers'=>$manual), JSON_UNESCAPED_UNICODE | JSON_UNESCAPED_SLASHES);
+  $file = bratonien_tools_cache_worker_settings_file();
+  if ($json === false || @file_put_contents($file, $json."\n", LOCK_EX) === false)
+  {
+    throw new RuntimeException('Cache-Worker-Einstellung konnte nicht gespeichert werden.');
+  }
+  @chmod($file, 0664);
+
+  $settings = bratonien_tools_get_cache_worker_settings();
+  return array(
+    'message'=>sprintf(
+      'Cache-Worker gespeichert: %s. %d CPU(s) erkannt, %d Worker aktiv.',
+      $settings['auto'] ? 'Automatik 1:1' : 'manuell',
+      $settings['cpu_count'],
+      $settings['worker_count']
+    ),
+  );
+}