feat: Adding Monitor script to track logs

bookings/monitor.sh

@@ -0,0 +1,90 @@
+#!/bin/bash
+
+LOG_PATH="../logs/api.log"
+ENDPOINT="https://ghaymah.com/alert"
+LAST_LINE_CHECKED_FILE="/tmp/monitor.lastline"
+
+# Read last processed line number
+last_line=$(cat "$LAST_LINE_CHECKED_FILE" 2>/dev/null || echo 0)
+total_lines=$(wc -l < "$LOG_PATH")
+
+if ! (command -v jq >/dev/null 2>&1); then
+    sudo apt-get install -y jq
+fi
+
+#System info
+
+function get_HOSTNAME(){
+    echo "$(hostname)"
+}
+function get_IP(){
+    echo "$(hostname -I | awk '{print $1}')"
+}
+function get_CPU_Usage(){
+    echo "$(top -bn1 | grep "Cpu(s)" | awk '{print 100 - $8"%"}')"
+}
+
+function get_MEM_Usage(){
+    echo "$(free -m | awk '/Mem/{printf "%.2f%%", $3/$2 * 100}')"
+}
+
+function get_DISK_Usage(){
+    echo "$(df -h / | awk 'NR==2 {print $5}')"
+}
+
+
+function build_JSON() {
+    local line="$1"  # log message as parameter
+
+    local status_code
+    status_code=$(echo "$line" | grep -oP 'status=\K[0-9]+')
+
+    local timestamp
+    timestamp=$(echo "$line" | grep -oP '^\[\K[^\]]+')
+
+    JSON=$(jq -n \
+        --arg host "$(get_HOSTNAME)" \
+        --arg ip "$(get_IP)" \
+        --arg cpu "$(get_CPU_Usage)" \
+        --arg mem "$(get_MEM_Usage)" \
+        --arg disk "$(get_DISK_Usage)" \
+        --arg log "$line" \
+        --arg error "$status_code" \
+        --arg timestamp "$timestamp" \
+        '{
+            error: $error,
+            timestamp: $timestamp,
+            message: $log,
+            server_metrics: {
+                host: $host,
+                ip: $ip,
+                cpu: $cpu,
+                mem: $mem,
+                disk: $disk
+            }
+        }'
+    )
+
+    echo "$JSON"
+}
+
+
+
+# Process only new lines (used tail to display last new lines)
+tail -n +"$((last_line+1))" "$LOG_PATH" | while read -r line; do
+    line=$(echo "$line" | tr -d '\r')
+
+    if echo "$line" | grep -E -q '(status=[45][0-9]{2}|failed|timeout)'; then
+        #echo " Error detected: $line"
+
+        build_JSON "$line"
+        
+
+        
+        # Send alert
+        #curl -X POST -H "Content-Type: application/json" -d "$JSON" "$ENDPOINT"
+    fi
+done
+
+# Update last processed line
+echo "$total_lines" > "$LAST_LINE_CHECKED_FILE"