feat: implement automatic metrics collection and monitoring system

bin/collect_metrics.php

@@ -21,8 +21,21 @@ date_default_timezone_set('UTC');
 // Enable error logging
 error_reporting(E_ALL);
 ini_set('display_errors', 1);
+ini_set('log_errors', 1);
+ini_set('error_log', '/var/log/metrics_collector_errors.log');
 
-echo "[" . date('Y-m-d H:i:s') . "] Metrics collector started\n";
+// Write PID file for monitoring
+$pidFile = '/var/run/collect_metrics.pid';
+file_put_contents($pidFile, getmypid());
+
+// Register shutdown function to clean up PID file
+register_shutdown_function(function() use ($pidFile) {
+    if (file_exists($pidFile)) {
+        unlink($pidFile);
+    }
+});
+
+echo "[" . date('Y-m-d H:i:s') . "] Metrics collector started (PID: " . getmypid() . ")\n";
 
 // Main loop
 while (true) {
@@ -79,6 +92,12 @@ while (true) {
         
     } catch (Exception $e) {
         echo "[" . date('Y-m-d H:i:s') . "] FATAL ERROR: " . $e->getMessage() . "\n";
+        error_log("[FATAL] Metrics collector error: " . $e->getMessage());
+        echo "Retrying in 30 seconds...\n\n";
+        sleep(30);
+    } catch (Error $e) {
+        echo "[" . date('Y-m-d H:i:s') . "] CRITICAL ERROR: " . $e->getMessage() . "\n";
+        error_log("[CRITICAL] Metrics collector error: " . $e->getMessage());
         echo "Retrying in 30 seconds...\n\n";
         sleep(30);
     }

bin/monitor_metrics.sh

@@ -0,0 +1,42 @@
+#!/bin/bash
+
+# Monitor and restart metrics collector if it's not running
+# This script checks if collect_metrics.php is running and restarts it if needed
+
+SCRIPT_PATH="/var/www/html/bin/collect_metrics.php"
+LOG_FILE="/var/log/metrics_monitor.log"
+PID_FILE="/var/run/collect_metrics.pid"
+
+log_message() {
+    echo "[$(date '+%Y-%m-%d %H:%M:%S')] $1" >> "$LOG_FILE"
+}
+
+# Check if the process is running
+is_running() {
+    if [ -f "$PID_FILE" ]; then
+        PID=$(cat "$PID_FILE")
+        if ps -p "$PID" > /dev/null 2>&1; then
+            # Check if it's actually our script
+            if ps -p "$PID" -o args= | grep -q "collect_metrics.php"; then
+                return 0
+            fi
+        fi
+    fi
+    return 1
+}
+
+# Start the metrics collector
+start_collector() {
+    log_message "Starting metrics collector..."
+    /usr/local/bin/php "$SCRIPT_PATH" >> /var/log/metrics_collector.log 2>&1 &
+    echo $! > "$PID_FILE"
+    log_message "Metrics collector started with PID: $(cat $PID_FILE)"
+}
+
+# Main logic
+if is_running; then
+    log_message "Metrics collector is running (PID: $(cat $PID_FILE))"
+else
+    log_message "Metrics collector is not running - starting it"
+    start_collector
+fi