add monitoring

analytics/app.py

@@ -1,5 +1,6 @@
 from flask import Flask, request, jsonify
 from flask_sqlalchemy import SQLAlchemy
+from prometheus_flask_exporter import PrometheusMetrics
 from datetime import datetime
 import logging
 
@@ -8,6 +9,7 @@
 logger = logging.getLogger(__name__)
 
 app = Flask(__name__)
+metrics = PrometheusMetrics(app)
 app.config['SQLALCHEMY_DATABASE_URI'] = 'postgresql://user:password@my-postgresql:5432/analytics-db'
 
 try:

analytics/requirements.txt

@@ -1,3 +1,4 @@
 flask
 flask_sqlalchemy
-psycopg2-binary
+psycopg2-binary
+prometheus-flask-exporter

api/app.py

@@ -1,10 +1,12 @@
 from flask import Flask, request, jsonify, send_file, redirect
 from pymongo import MongoClient, errors
+from prometheus_flask_exporter import PrometheusMetrics
 import requests
 import io
 import logging
 
 app = Flask(__name__)
+metrics = PrometheusMetrics(app)
 
 # Set up logging
 logging.basicConfig(level=logging.DEBUG)

api/requirements.txt

@@ -1,3 +1,4 @@
 flask
 pymongo
 requests
+prometheus-flask-exporter

qr-code-generator/main.go

@@ -4,6 +4,7 @@ import (
     _ "encoding/base64"
     "github.com/skip2/go-qrcode"
     "net/http"
+    "github.com/prometheus/client_golang/prometheus/promhttp"
 )
 
 func generateQRCode(w http.ResponseWriter, r *http.Request) {
@@ -22,6 +23,7 @@ func generateQRCode(w http.ResponseWriter, r *http.Request) {
 }
 
 func main() {
+    http.Handle("/metrics", promhttp.Handler())
     http.HandleFunc("/generate_qr", generateQRCode)
     http.ListenAndServe("0.0.0.0:5002", nil)
 }

url-shortener/app.py

@@ -1,8 +1,10 @@
 from flask import Flask, request, jsonify, abort
+from prometheus_flask_exporter import PrometheusMetrics
 import random
 import string
 
 app = Flask(__name__)
+metrics = PrometheusMetrics(app)
 
 # Function to generate a random short URL
 def generate_short_url():

url-shortener/requirements.txt

@@ -1 +1,2 @@
 flask
+prometheus-flask-exporter