commit cc44699bcf4354a08a375d28d2e3a6af5917b6a2
Author: shane ubento <muhammed.tariq.ali.razvi@student.tuke.sk>
Date:   Tue Mar 4 09:34:28 2025 +0100

    first assinement submition

diff --git a/z1/README.md b/z1/README.md
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+# Visitor Counter Application
+
+This project demonstrates a simple web application using Apache (web server), Flask (backend) and Redis(database), deployed with Docker Compose.
+
+## Prerequisites
+
+- Docker Engine v20.10 or newer.
+- Docker Compose v2.33.1 or newer.
+
+## Application Description
+
+The application consists of two services:
+1. Web server (Apache) serving an HTML page.
+2. Backend (flask): Handles requests to '/counter'.
+2. Database (Redis) storing visitor counts persistently.
+
+## Instructions
+
+1. Prepare the application:
+./prepare-app.sh
+
+2. Start the application:
+./start-app.sh
+
+3. Access the application at:
+http://localhost:5000
+or
+run "hostname -I " and copy the ip address and Access the application at :
+http://[ip address you copied]:5000
+
+4. Stop the application:
+./stop-app.sh
+
+5. Remove all resources:
+./remove-app.sh
+
+## Virtual netwok and volumes
+
+- A default network is created by docker compose for communication between these services
+- A named volum ('redis_data') ensures Redis data persists across restarts.
diff --git a/z1/backend/Dockerfile b/z1/backend/Dockerfile
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+FROM python:3.9-slim
+
+WORKDIR /app
+
+COPY app.py /app/
+
+RUN pip install flask redis
+
+EXPOSE 5000
+
+CMD ["python", "app.py"]
diff --git a/z1/backend/app.py b/z1/backend/app.py
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+++ b/z1/backend/app.py
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+from flask import Flask, jsonify
+import redis
+
+app = Flask(__name__)
+
+# Connect to Redis (running in a separate container)
+redis_client = redis.StrictRedis(host='redis', port=6379, decode_responses=True)
+
+@app.route('/counter', methods=['GET'])
+def counter():
+    # Increment visitor count in Redis
+    visits = redis_client.incr('visits')
+    return jsonify({"visits": visits})
+
+if __name__ == '__main__':
+    app.run(host='0.0.0.0', port=5000)
diff --git a/z1/compose.yaml b/z1/compose.yaml
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+++ b/z1/compose.yaml
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+version: '3.8'
+
+services:
+  web:
+    build: ./web
+    ports:
+      - "5000:80"
+    depends_on:
+      - backend
+    restart: always
+
+  backend:
+    build: ./backend
+    ports:
+      - "5001:5000"
+    depends_on:
+      - redis
+    restart: always
+
+  redis:
+    image: redis:alpine
+    command: ["redis-server", "--appendonly", "yes"]
+    volumes:
+      - redis_data:/data
+    restart: always
+
+volumes:
+  redis_data:
diff --git a/z1/prepare-app.sh b/z1/prepare-app.sh
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+++ b/z1/prepare-app.sh
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+#!/bin/bash
+echo "Preparing app..."
+docker compose build
diff --git a/z1/remove-app.sh b/z1/remove-app.sh
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+++ b/z1/remove-app.sh
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+#!/bin/bash
+echo "Removing app..."
+docker compose down -v --remove-orphans
diff --git a/z1/start-app.sh b/z1/start-app.sh
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+++ b/z1/start-app.sh
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+#!/bin/bash
+echo "Starting app..."
+docker compose up -d
+echo "The app is available at http://localhost:5000"
+echo "You can also open in windows by running hostname -I in linux and copying the ip address "
+echo "Then you can open you main OS broswer and type http://[ip you copied]:5000"
diff --git a/z1/stop-app.sh b/z1/stop-app.sh
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+++ b/z1/stop-app.sh
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+#!/bin/bash
+echo "Stopping app..."
+docker compose stop
diff --git a/z1/web/Dockerfile b/z1/web/Dockerfile
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+++ b/z1/web/Dockerfile
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+FROM httpd:2.4
+
+# Copies your static HTML file into the Apache document root
+COPY index.html /usr/local/apache2/htdocs/
+
+EXPOSE 80
diff --git a/z1/web/index.html b/z1/web/index.html
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+++ b/z1/web/index.html
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+<!DOCTYPE html>
+<html lang="en">
+<head>
+  <meta charset="UTF-8">
+  <meta name="viewport" content="width=device-width, initial-scale=1.0">
+  <title>Visitor Counter</title>
+</head>
+<body>
+  <h1>Welcome to the Visitor Counter App!</h1>
+  <h2>Made by ALI</h2>
+  <h3>Also made for assinment 1</h3>
+  <p>This page has been visited <span id="counter">0</span> times.</p>
+
+  <script>
+    async function updateCounter() {
+      try {
+        const response = await fetch('http://localhost:5001/counter');
+        const data = await response.json();
+        document.getElementById('counter').textContent = data.visits;
+      } catch (error) {
+        console.error('Error fetching counter:', error);
+      }
+    }
+
+    updateCounter();
+  </script>
+</body>
+</html>