Add main source code files

Dockerfile

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+ARG PYTHON_VERSION=3.12.2
+FROM python:${PYTHON_VERSION}-slim as base
+
+WORKDIR /app
+
+COPY . .
+
+RUN python3 -m pip install -r requirements.txt
+
+EXPOSE 8080
+
+
+CMD gunicorn 'counter-service:app' --bind=0.0.0.0:8080

counter-service.py

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+from flask import Flask, request, jsonify
+import os
+
+app = Flask(__name__)
+
+# define path to file to store the counter 
+COUNTER_FILE = "./data/counter.txt"
+
+def read_counter():
+    """
+    reads the counter file for the counter value. If the file doesnot
+    exist it returns 0.
+
+    Returns:
+        int: The current value of the counter
+    """
+
+    if os.path.exists(COUNTER_FILE):
+        with open(COUNTER_FILE, "r") as f:
+            return int(f.read().strip())
+    else:
+        return 0
+
+def update_counter(counter):
+    """
+    updates the counter file with the passed counter argument
+
+    Args: 
+        counter (int): The new counter value to be stored in the file
+
+    """
+    with open(COUNTER_FILE,"w") as f:
+        f.write(str(counter))
+
+@app.route('/', methods=['GET','POST'])
+def handle_request():
+
+    counter = read_counter()
+
+    if request.method == 'POST':
+        counter+=1
+        update_counter(counter)
+        return f"updated the counter value. new value is ${counter}"
+    else:
+        return f"current posts request count is ${counter}"
+
+@app.route('/health', methods=['GET'])
+def health_check():
+
+    try:
+        read_counter()
+        return jsonify({"status": "healthy"}), 200
+    except Exception as e:
+        return jsonify({"status": "unhealthy", "reson": str(e)}), 500
+
+if __name__ == '__main__':
+    app.run(host='0.0.0.0', port=8080, debug=False)
+
+
+
+

data/counter.txt

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+1

requirements.txt

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+blinker==1.8.1
+click==8.1.7
+Flask==3.0.3
+gunicorn==22.0.0
+itsdangerous==2.2.0
+Jinja2==3.1.4
+MarkupSafe==2.1.5
+packaging==24.0
+Werkzeug==3.0.3