161 lines
4.5 KiB
PHP
161 lines
4.5 KiB
PHP
<?php
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/**
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* Monitoring Library - PHP Version
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* Copyright (C) 2026 Cédric Abonnel
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* License: GNU Affero General Public License v3
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*/
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// --- Chemins et Constantes ---
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$MONITORING_LIB_DIR = __DIR__;
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$MONITORING_BASE_DIR = dirname($MONITORING_LIB_DIR);
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$MONITORING_CONF_DIR = $MONITORING_BASE_DIR . '/conf';
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// États globaux
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$STATUS_OK = 0;
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$STATUS_WARNING = 1;
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$STATUS_ERROR = 2;
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$STATUS_INTERNAL = 3;
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$CURRENT_STATUS = $STATUS_OK;
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// --- Chargement de la Config ---
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$CONFIG = [
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'LOG_FILE' => '/var/log/monitoring/events.jsonl',
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'MONITORING_LOCK_DIR' => '/var/lock/monitoring',
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'LOG_LEVEL' => 'INFO'
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];
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if (file_exists($MONITORING_CONF_DIR . '/monitoring.conf.php')) {
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$global_conf = include $MONITORING_CONF_DIR . '/monitoring.conf.php';
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if (is_array($global_conf)) {
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$CONFIG = array_merge($CONFIG, $global_conf);
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}
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}
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// Variables d'exécution
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$SCRIPT_NAME = basename($_SERVER['SCRIPT_FILENAME'] ?? $argv[0]);
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$SCRIPT_PATH = realpath($_SERVER['SCRIPT_FILENAME'] ?? $argv[0]);
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// --- Fonctions de Log ---
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/**
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* Log un événement au format JSONL
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*/
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function log_event(string $level, string $event, string $message, array $extra_kv = []) {
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global $CONFIG, $SCRIPT_NAME;
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$ts = date('c'); // ISO-8601
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// Détection Hostname
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$host = getenv('HOSTNAME_FQDN') ?: (gethostname() ?: 'unknown');
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$log_data = [
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"ts" => $ts,
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"host" => $host,
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"app" => $SCRIPT_NAME,
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"level" => $level,
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"event" => $event,
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"message" => $message
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];
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// Fusion des paires clé=valeur supplémentaires
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foreach ($extra_kv as $kv) {
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if (strpos($kv, '=') !== false) {
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list($k, $v) = explode('=', $kv, 2);
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$log_data[$k] = $v;
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}
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}
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$json_line = json_encode($log_data, JSON_UNESCAPED_SLASHES | JSON_UNESCAPED_UNICODE);
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$log_file = $CONFIG['LOG_FILE'];
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ensure_parent_dir($log_file);
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file_put_contents($log_file, $json_line . "\n", FILE_APPEND | LOCK_EX);
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}
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function set_status(int $new_status) {
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global $CURRENT_STATUS;
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if ($new_status > $CURRENT_STATUS) {
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$CURRENT_STATUS = $new_status;
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}
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}
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// Helpers de logs
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function log_debug($e, $m, $x = []) { log_event("DEBUG", $e, $m, $x); }
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function log_info($e, $m, $x = []) { log_event("INFO", $e, $m, $x); }
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function log_notice($e, $m, $x = []) { log_event("NOTICE", $e, $m, $x); }
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function log_warning($e, $m, $x = []) { log_event("WARNING", $e, $m, $x); set_status(1); }
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function log_error($e, $m, $x = []) { log_event("ERROR", $e, $m, $x); set_status(2); }
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function log_critical($e, $m, $x = []) { log_event("CRITICAL", $e, $m, $x); set_status(2); }
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function fail_internal(string $msg) {
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log_event("ERROR", "internal_error", $msg);
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exit(3); // STATUS_INTERNAL
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}
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function exit_with_status() {
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global $CURRENT_STATUS;
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exit($CURRENT_STATUS);
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}
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// --- Utilitaires Système ---
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/**
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* Vérifie la présence de commandes système
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*/
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function require_cmd(...$cmds) {
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foreach ($cmds as $cmd) {
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$output = [];
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$res = 0;
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exec("command -v " . escapeshellarg($cmd), $output, $res);
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if ($res !== 0) {
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fail_internal("Commande requise absente: $cmd");
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}
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}
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}
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/**
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* Gestion du verrouillage (Lock)
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*/
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function lock_or_exit(?string $lock_name = null) {
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global $CONFIG, $SCRIPT_NAME;
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$name = $lock_name ?: $SCRIPT_NAME;
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$lock_file = ($CONFIG['MONITORING_LOCK_DIR'] ?? '/var/lock/monitoring') . "/{$name}.lock";
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ensure_parent_dir($lock_file);
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$fp = fopen($lock_file, "w+");
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if (!$fp || !flock($fp, LOCK_EX | LOCK_NB)) {
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log_notice("already_running", "Une autre instance est déjà en cours", ["lock=$lock_file"]);
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exit(0);
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}
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// On garde le descripteur ouvert pour maintenir le lock
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return $fp;
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}
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/**
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* Évalue un niveau selon des seuils
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*/
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function threshold_level($value, $warning, $critical) {
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if ($value >= $critical) return 'CRITICAL';
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if ($value >= $warning) return 'WARNING';
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return 'INFO';
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}
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function ensure_parent_dir(string $file) {
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$dir = dirname($file);
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if (!is_dir($dir)) {
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if (!mkdir($dir, 0755, true)) {
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// Ici on ne peut pas appeler log_event si c'est le répertoire de log qui échoue
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error_log("Impossible de créer le répertoire : $dir");
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exit(3);
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}
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}
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}
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function safe_mv(string $src, string $dst) {
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if (!rename($src, $dst)) {
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fail_internal("Échec du déplacement de $src vers $dst");
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}
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} |