NetworkPowerPort: add support for Shelly Gen2+

labgrid/driver/power/shelly_gen2.py

@@ -0,0 +1,30 @@
+"""Interface for controlling relays of Shelly devices using the Gen 2+ API
+
+  NetworkPowerPort:
+      model: shelly_gen2
+      host: 'http://192.168.0.42'
+      index: 0
+
+Will do a POST request to http://192.168.0.42/rpc to get the current
+relay state or change the state.
+
+Also, see the official Gen 2+ Device API documentation:
+https://shelly-api-docs.shelly.cloud/gen2/General/RPCProtocol
+"""
+
+import requests
+
+
+def power_set(host: str, port: int, index: int = 0, value: bool = True):
+    assert not port
+    payload = {"id": 1, "method": "Switch.Set", "params": {"id": index, "on": value}}
+    r = requests.post(f"{host}/rpc", json=payload)
+    r.raise_for_status()
+
+
+def power_get(host: str, port: int, index: int = 0):
+    assert not port
+    payload = {"id": 1, "method": "Switch.GetStatus", "params": {"id": index}}
+    r = requests.post(f"{host}/rpc", json=payload)
+    r.raise_for_status()
+    return r.json()["output"]