Associated Flask endpoints with their own dedicated Azure Function

.github/workflows/deploy.yml

@@ -18,7 +18,7 @@ jobs:
         uses: actions/checkout@v4
 
       - name: Setup Python version
-        uses: actions/setup-python@v1
+        uses: actions/setup-python@v5
         with:
           python-version: ${{ env.PYTHON_VERSION }}
 
@@ -31,7 +31,7 @@ jobs:
         run: pip install -r requirements.txt
 
       - name: Zip artifact for deployment
-        run: zip -r release.zip host.json requirements.txt wsgi_middleware/*  flask_api/*
+        run: zip -r release.zip host.json requirements.txt function_app.py crypto_utils/*
 
       - name: Upload artifact for deployment job
         uses: actions/upload-artifact@v3

flask_api/__init__.py → function_app.py

@@ -1,12 +1,19 @@
-from flask import Flask, jsonify, request
+import logging
 
-from flask_api.crypto_utils.module import aes_encrypt, aes_decrypt
+import azure.functions as func
+from flask import Flask, jsonify, request
+from crypto_utils import aes_encrypt, aes_decrypt
 
 app = Flask(__name__)
 
+# Configure logging
+logging.basicConfig(level=logging.DEBUG)
+logger = logging.getLogger(__name__)
+
 
 @app.route("/")
 def index():
+    logger.info("Received request to index endpoint.")
     return (
         "Welcome to Hvalfangst Crypto API!\n\n"
         "Available Endpoints:\n"
@@ -19,12 +26,16 @@ def index():
 
 @app.route("/encrypt", methods=["POST"])
 def encrypt():
+    logger.info("Received request to encrypt endpoint.")
+
     # Extract data from JSON body
     request_data = request.get_json()
 
     # Check if 'plain_text' and 'encryption_key' fields are present in the JSON
     if "plain_text" not in request_data or "encryption_key" not in request_data:
-        return jsonify({"error": "Missing 'plain_text' or 'encryption_key' in the request body"}), 400
+        error_msg = "Missing 'plain_text' or 'encryption_key' in the request body"
+        logger.error(error_msg)
+        return jsonify({"error": error_msg}), 400
 
     plain_text = request_data["plain_text"]
     encryption_key = request_data["encryption_key"]
@@ -39,18 +50,24 @@ def encrypt():
         "encrypted_text": encrypted_text
     }
 
+    logger.info("Encryption successful.")
+
     # Return JSON response
     return jsonify(response)
 
 
 @app.route("/decrypt", methods=["POST"])
 def decrypt():
+    logger.info("Received request to decrypt endpoint.")
+
     # Extract data from JSON body
     request_data = request.get_json()
 
     # Check if 'encrypted_text' and 'encryption_key' fields are present in the JSON
     if "encrypted_text" not in request_data or "encryption_key" not in request_data:
-        return jsonify({"error": "Missing 'encrypted_text' or 'encryption_key' in the request body"}), 400
+        error_msg = "Missing 'encrypted_text' or 'encryption_key' in the request body"
+        logger.error(error_msg)
+        return jsonify({"error": error_msg}), 400
 
     encrypted_text = request_data["encrypted_text"]
     encryption_key = request_data["encryption_key"]
@@ -65,9 +82,11 @@ def decrypt():
         "plain_text": plain_text
     }
 
+    logger.info("Decryption successful.")
+
     # Return JSON response
     return jsonify(response)
 
 
-if __name__ == "__main__":
-    app.run()
+# Create an Azure Function which serves the above routes in our WSGI runtime (Gunicorn)
+app = func.WsgiFunctionApp(app=app.wsgi_app, http_auth_level=func.AuthLevel.ANONYMOUS)

postman/Hvalfangst Azure Function Crypto API.postman_collection.json

@@ -0,0 +1,88 @@
+{
+	"info": {
+		"_postman_id": "edde8ba3-fc1a-43ca-9534-9ff5ec08969e",
+		"name": "Hvalfangst Azure Function Crypto API",
+		"schema": "https://schema.getpostman.com/json/collection/v2.1.0/collection.json",
+		"_exporter_id": "29899311"
+	},
+	"item": [
+		{
+			"name": "Index",
+			"request": {
+				"method": "GET",
+				"header": [],
+				"url": {
+					"raw": "https://hvalfangstlinuxfunctionapp.azurewebsites.net/index",
+					"protocol": "https",
+					"host": [
+						"hvalfangstlinuxfunctionapp",
+						"azurewebsites",
+						"net"
+					],
+					"path": [
+						"index"
+					]
+				}
+			},
+			"response": []
+		},
+		{
+			"name": "Encrypt",
+			"request": {
+				"method": "POST",
+				"header": [],
+				"body": {
+					"mode": "raw",
+					"raw": "{\r\n    \"plain_text\": \"Goofy on Acid\",\r\n    \"encryption_key\": \"ballyr\"\r\n}",
+					"options": {
+						"raw": {
+							"language": "json"
+						}
+					}
+				},
+				"url": {
+					"raw": "https://hvalfangstlinuxfunctionapp.azurewebsites.net/encrypt",
+					"protocol": "https",
+					"host": [
+						"hvalfangstlinuxfunctionapp",
+						"azurewebsites",
+						"net"
+					],
+					"path": [
+						"encrypt"
+					]
+				}
+			},
+			"response": []
+		},
+		{
+			"name": "Decrypt",
+			"request": {
+				"method": "POST",
+				"header": [],
+				"body": {
+					"mode": "raw",
+					"raw": "{\r\n    \"encrypted_text\": \"f=\",\r\n    \"encryption_key\": \"ballyr\"\r\n}",
+					"options": {
+						"raw": {
+							"language": "json"
+						}
+					}
+				},
+				"url": {
+					"raw": "https://hvalfangstlinuxfunctionapp.azurewebsites.net/decrypt",
+					"protocol": "https",
+					"host": [
+						"hvalfangstlinuxfunctionapp",
+						"azurewebsites",
+						"net"
+					],
+					"path": [
+						"decrypt"
+					]
+				}
+			},
+			"response": []
+		}
+	]
+}