Finished code

metrics.py

@@ -1,22 +1,39 @@
 import requests
-import os
+from os import getenv
-from dotenv import load_dotenv
+from time import sleep
-from flask import Flask
+from prometheus_client.core import GaugeMetricFamily, REGISTRY
-app = Flask(__name__)
+from prometheus_client import start_http_server
 
-load_dotenv()
+class TasmotaCollector(object):
-ip = os.getenv('DEVICE_IP')
+    def __init__(self):
-user = os.getenv('USER')
+        self.ip = getenv('DEVICE_IP')
-password = os.getenv('PASSWORD')
+        if not self.ip:
+            self.ip = "192.168.4.1"
+        self.user = getenv('USER')
+        self.password = getenv('PASSWORD')
 
-def get_values():
+    def collect(self):
 
-    url = 'http://' + ip + '/?m=1'
+        response = self.fetch()
+
+        for key in response:
+            metric_name = "tasmota_" + key.lower().replace(" ", "_") 
+            metric = response[key].split()[0]
+            unit = None
+            if len(response[key].split()) > 1:
+                unit = response[key].split()[1]
+            g = GaugeMetricFamily(metric_name, key, labels=['device'], unit=unit)
+            g.add_metric([self.ip], metric)
+            yield g
+
+    def fetch(self):
+
+        url = 'http://' + self.ip + '/?m=1'
 
         session = requests.Session()
         
-    if user and password:
+        if self.user and self.password:
-        session.auth = (user, password)
+            session.auth = (self.user, self.password)
 
         page = session.get(url)
 
@@ -30,15 +47,15 @@ def get_values():
 
         return values
 
-@app.route('/metrics')
+if __name__ == '__main__':
-def return_metrics():
 
-    response = ""
+    port = getenv('EXPORTER_PORT')
+    if not port:
+        port = 8000
 
-    data = get_values()
+    start_http_server(int(port))
+    REGISTRY.register(TasmotaCollector())
 
-    for key in data:
+    while(True):
-        line = key.lower().replace(" ", "_") + " " + data[key].split()[0] + '\n'
+        sleep(1)
-        response += line
     
-    return(response)