75 lines
2.9 KiB
Python
75 lines
2.9 KiB
Python
import subprocess
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import json
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import time
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from flask import Flask, request, jsonify
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from I2C_Function import analyze_data, read_data
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from flask_cors import CORS
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from threading import Lock
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app = Flask(__name__)
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CORS(app)
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initialized = False
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lock = Lock() # Sperre (Lock) für die analyze_data-Methode
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@app.route('/trng/randomNum/init', methods=['GET'])
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def initialize_generator():
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global initialized # Zugriff auf die globale Variable
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with lock: # Sperre (Lock) verwenden, um sicherzustellen, dass nur ein Thread die Methode ausführt
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if initialized:
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return jsonify({'message': 'random number generator already initialized'}), 200
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result = analyze_data(int(1), int(1), startup=True)
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if result is True:
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initialized = True
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return jsonify({'message': 'successful operation; random number generator is ready and random numbers can be requested'}), 200
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else:
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return jsonify({'error': 'Unable to initialize the random number generator within a timeout of 60 seconds.'}), 555
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@app.route('/trng/randomNum/getRandom', methods=['GET'])
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def get_random_numbers():
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global initialized # Zugriff auf die globale Variable
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quantity = request.args.get('quantity')
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bits = request.args.get('numBits')
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if not quantity.isdigit() or not bits.isdigit():
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return jsonify({'error': 'Invalid input. Quantity and bits must be numeric.'}), 400
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if int(quantity) <= 0 or int(bits) <= 0:
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return jsonify({'error': 'Invalid input. Quantity and bits must be positive integers.'}), 400
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if not initialized:
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return jsonify({'error': 'system not ready; try init'}), 432
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with lock: # Sperre (Lock) verwenden, um sicherzustellen, dass nur ein Thread die Methode ausführt
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random_numbers = analyze_data(int(quantity), int(bits), startup=False)
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if random_numbers is False:
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return jsonify({'error': 'Unable to generate random numbers.'}), 500
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if random_numbers:
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response_data = {
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'status': 'successful operation; HEX-encoded bit arrays (with leading zeros if required)',
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'randomNumbers': random_numbers
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}
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return jsonify(response_data), 200
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else:
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return jsonify({'error': 'Unable to generate random numbers.'}), 500
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@app.route('/trng/randomNum/shutdown', methods=['GET'])
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def shutdown_generator():
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global initialized # Zugriff auf die globale Variable
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with lock: # Sperre (Lock) verwenden, um sicherzustellen, dass nur ein Thread die Methode ausführt
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initialized = False
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return jsonify({'message': "successful operation; random number generator has been set to 'standby mode'"}), 200
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if __name__ == '__main__':
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cert_path = '/etc/nginx/ssl/cert-gmtrom.pem'
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key_path = '/etc/nginx/ssl/cert-gmtrom-key.pem'
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app.run(host='0.0.0.0', ssl_context=(cert_path, key_path)) |