waffle_counter_backend/server.py

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2024-03-27 03:33:19 +01:00
#!/usr/bin/env python3
# -*- coding: utf-8 -*-
from flask import Flask, request, jsonify
from prometheus_client import Counter, generate_latest, multiprocess, REGISTRY, CollectorRegistry
app = Flask(__name__)
# Create a new CollectorRegistry to avoid duplicate timeseries error
custom_registry = CollectorRegistry()
# Define Prometheus Counters for each input device
c3woc_b1_counter = Counter('c3woc_buzzer1_pressed_total', 'Total number the buzzer 1 from C3WOC is pressed', registry=custom_registry)
c3woc_b2_counter = Counter('c3woc_buzzer2_pressed_total', 'Total number the buzzer 2 from C3WOC is pressed', registry=custom_registry)
c3woc_b3_counter = Counter('c3woc_buzzer3_pressed_total', 'Total number the buzzer 3 from C3WOC is pressed', registry=custom_registry)
c3woc_b4_counter = Counter('c3woc_buzzer4_pressed_total', 'Total number the buzzer 4 from C3WOC is pressed', registry=custom_registry)
# Define more counters as needed for other devices
# TODO: dynamic counter creation
@app.route('/metrics')
def metrics():
# Generate and return Prometheus metrics format using custom registry
return generate_latest(registry=custom_registry)
@app.route('/buzzed', methods=['POST'])
def add_data():
data = request.get_json()
device = data.get('buzzer')
waffles_counted = data.get('waffle_ready')
match device:
case 'buzzer1':
c3woc_b1_counter.inc(waffles_counted)
return jsonify({'message': f'Data added for {device}'}), 200
case 'buzzer2':
c3woc_b2_counter.inc(waffles_counted)
return jsonify({'message': f'Data added for {device}'}), 200
case 'buzzer3':
c3woc_b3_counter.inc(waffles_counted)
return jsonify({'message': f'Data added for {device}'}), 200
case 'buzzer4':
c3woc_b4_counter.inc(waffles_counted)
return jsonify({'message': f'Data added for {device}'}), 200
case _:
return jsonify({'error': 'Invalid device or buzzer specified'}), 400
if __name__ == '__main__':
app.run(host='0.0.0.0', port=8042)