Listing: Python ermittelt Verbrauchsdaten

import requests
import json
# === 1. Konfiguration ===
BASE_URL = "http://openmaintserver:8080/openmaint/services/rest/v3"
USERNAME = "admin"
PASSWORD = "admin"
METER_NAME = "Stromzähler Serverraum"
# Optional: Zählername für Filter
# === 2. Login und Token holen ===
def login():x
url = f"{BASE_URL}/login"
payload = {"username": USERNAME,
"password": PASSWORD}
response = requests.post(url,
json=payload)
response.raise_for_status()
token = response.json()["data"]
["sessionId"]
print("Login erfolgreich.")
return token
# === 3. Zähler (Meter) abfragen ===
def get_meter(token):
headers = {"Authorization": f"Bearer
{token}"}
url = f"{BASE_URL}/classes/Meter/cards"
response = requests.get(url,
headers=headers)
response.raise_for_status()
meters = response.json()["data"]
for m in meters:
if METER_NAME in m["description"]:
print(f"Gefundener Zähler:
{m['description']} (ID: {m['id']})")
return m["id"]
raise ValueError("Zähler nicht gefunden")
# === 4. Messwerte zum Zähler abfragen ===
def get_measurements(token, meter_id):
headers = {"Authorization": f"Bearer
{token}"}
url = f"{BASE_URL}/classes/
Measurement/cards"
# Optional: Filter nach Meter-ID
params = {
"filter": json.dumps({
"attribute": "Meter",
"operator": "equals",
"value": meter_id
})
}
response = requests.get(url,
headers=headers, params=params)
response.raise_for_status()
data = response.json()["data"]
print(f"Gefundene Messwerte:
{len(data)}")
for entry in data:
print(f" {entry['Date']} |
{entry['Value']} {entry.get('Unit',
'kWh')}")
return data
# === 5. Hauptprogramm ===
if __name__ == "__main__":
try:
token = login()
meter_id = get_meter(token)
get_measurements(token, meter_id)
except Exception as e:
print("Fehler:", e)