3rd draft @m

metaproxy.py

@@ -0,0 +1,65 @@
+import os
+import requests
+from flask import Flask, Response, request
+from dotenv import load_dotenv
+from bs4 import BeautifulSoup
+
+# Load environment variables from .env file
+load_dotenv()
+
+app = Flask(__name__)
+
+@app.route('/metalink')
+def get_metalink():
+    # Get query parameters from the request
+    repo = request.args.get('repo')
+    arch = request.args.get('arch')
+
+    # Check if required parameters are provided
+    if not repo or not arch:
+        return "Error: Missing 'repo' or 'arch' parameter", 400
+
+    # Construct the metalink URL using the provided parameters
+    metalink_url = f'https://mirrors.fedoraproject.org/metalink?repo={repo}&arch={arch}'
+
+    # Fetch the metalink file from the constructed URL
+    response = requests.get(metalink_url)
+    metalink_content = response.content
+
+    # Parse the .env file to get the filtering criteria
+    excluded_countries = eval(os.getenv('EXCLUDED_COUNTRIES', '[]'))
+    preferred_protocols = eval(os.getenv('PREFERRED_PROTOCOLS', '[]'))
+    preferred_types = eval(os.getenv('PREFERRED_TYPES', '[]'))
+    min_preference = int(os.getenv('MIN_PREFERENCE', '0'))
+
+    # Filter out the URLs based on the criteria
+    filtered_content = filter_urls(metalink_content, excluded_countries, preferred_protocols, preferred_types, min_preference)
+
+    # Return the filtered content as a response
+    return Response(filtered_content, mimetype='application/xml')
+
+def filter_urls(content, excluded_countries, preferred_protocols, preferred_types, min_preference):
+    # Parse the XML content
+    soup = BeautifulSoup(content, 'xml')
+
+    # Find all URL elements
+    urls = soup.find_all('url')
+
+    # Iterate over URLs and remove those that do not meet the criteria
+    for url in urls:
+        location = url.get('location')
+        protocol = url.get('protocol')
+        type_ = url.get('type')
+        preference = int(url.get('preference', 0))
+
+        if (location in excluded_countries or
+            protocol not in preferred_protocols or
+            type_ not in preferred_types or
+            preference < min_preference):
+            url.decompose()
+
+    # Return the filtered XML as a string
+    return str(soup)
+
+if __name__ == '__main__':
+    app.run(debug=True)