"""
UBUS jsonrpc interface for PoE management on OpenWrt devices. This comes in
handy if devices are connected to a PoE switch running OpenWrt.
The URL given in hosts in exporter.yaml must accept unauthenticated UBUS
calls for the two ``poe`` calls ``info`` and ``manage``.
Further information is availbe at https://openwrt.org/docs/techref/ubus#acls
NetworkPowerPort:
model: ubus
host: 'http://192.168.1.1/ubus'
index: 1
"""
import requests
[docs]
def jsonrpc_call(host, path, method, message):
r = requests.post(
host,
json={
"jsonrpc": "2.0",
"id": 1,
"method": "call",
"params": ["00000000000000000000000000000000", path, method, message],
},
)
r.raise_for_status()
return r.json()["result"]
[docs]
def power_set(host, port, index, value):
assert port is None
jsonrpc_call(host, "poe", "manage", {"port": f"lan{index}", "enable": value == 1})
[docs]
def power_get(host, port, index):
assert port is None
poe_info = jsonrpc_call(host, "poe", "info", {})[1]
assert f"lan{index}" in poe_info["ports"], f"Port lan{index} not found in {poe_info['ports']}"
return poe_info["ports"][f"lan{index}"] != "Disabled"