QOS 2 pour la config

snmp2mqtt.py

@@ -3,7 +3,10 @@ import asyncio
 from pysnmp.hlapi.asyncio.slim import Slim
 from pysnmp.smi.rfc1902 import ObjectIdentity, ObjectType
 import logging
-
+import random
+from paho.mqtt import client as mqtt_client
+import json
+from time import sleep
 
 logging.basicConfig(
         format='(%(levelname)s) %(message)s',
@@ -11,16 +14,40 @@ logging.basicConfig(
         )
 
 
-async def run(req):
+def connect_mqtt(mqtt_config):
+    def on_connect(client, userdata, flags, rc):
+        if rc == 0:
+            print("Connected to MQTT Broker!")
+        else:
+            print("Failed to connect, return code {rc}")
+    client = mqtt_client.Client()
+    client.username_pw_set(mqtt_config["user"], mqtt_config["password"])
+    client.on_connect = on_connect
+    client.connect(mqtt_config['broker'], mqtt_config['port'])
+    return client
+
+
+def publish(topic, client, data, retain, qos):
+    msg = json.dumps(data)
+    result = client.publish(topic=topic, payload=msg, qos=qos, retain=bool(retain))
+    status = result[0]
+    if status == 0:
+        logging.debug(f"Send `{msg}` to topic `{topic}`")
+    else:
+        logging.error(f"Failed to send message to topic {topic}")
+
+
+async def get_snmp(req):
+    data = {}
     for oid in req["oids"]:
         with Slim(1) as slim:
             errorIndication, errorStatus, errorIndex, varBinds = await slim.get(
                 req["snmp_community"],
                 req["ip"],
                 161,
-                ObjectType(ObjectIdentity(req["oids"][oid])),
+                ObjectType(ObjectIdentity(oid["oid"])),
             )
-    
+
             if errorIndication:
                 logging.error(errorIndication)
             elif errorStatus:
@@ -32,16 +59,110 @@ async def run(req):
                 )
             else:
                 for varBind in varBinds:
-                    logging.debug(f"SNMP/{req['mqtt_topic']}/{oid} => {varBind[1]}")
+                    logging.debug(f"{req['device_name']} {oid['name']} => {oid['type'](varBind[1])}")
+                    if oid['type'] == bool:
+                        if bool(varBind[1]):
+                            data.update({oid["name"]: "on"})
+                        else:
+                            data.update({oid["name"]: "off"})
+                    else:
+                        data.update({oid["name"]: oid["type"](varBind[1])})
+    logging.debug(f"JSON : {json.dumps(data)}")
+    return data
+
+
+def ha_create_config(req):
+    ha_config = {}
+    device = {
+            "ids": f"{req['device_name']}_{req['ip']}".replace(".", "_"),
+            "name": req['device_name'],
+            }
+    origin = {
+            "name": "snmp2mqtt"
+            }
+    ha_config.update({"dev": device, "o": origin})
+    ha_config.update({"state_topic": f"SNMP/{req['device_name']}/state"})
+    ha_config.update({"qos": 2})
+    cmps = {}
+    for oid in req['oids']:
+        cmps.update(
+                {
+                    f"{req['device_name']}_{req['ip']}_{oid['name']}".replace(".", "_"):
+                    {
+                        "p": oid['HA_platform'],
+                        "device_class": oid['HA_device_class'],
+                        "value_template": f"{{{{ value_json.{oid['name']}}}}}",
+                        "unique_id": f"{req['device_name']}_{req['ip']}_{oid['name']}".replace(".", "_"),
+                        "name": oid['name']
+                        }
+                    })
+        if "HA_unit" in oid.keys():
+            cmps.update(
+                 {f"{req['device_name']}_{req['ip']}_{oid['name']}".replace(".", "_"):
+                    {"unit_of_measurement": oid['HA_unit']}})
+    ha_config.update({"cmps": cmps})
+    logging.debug(f"config : {json.dumps(ha_config)}")
+    return ha_config
+
+
+def send_to_mqtt():
+    config = ha_create_config(req)
+    client = connect_mqtt(mqtt_config)
+    client.loop_start()
+    config_topic = f"homeassistant/device/{config['dev']['ids']}/config"
+    state_topic = config['state_topic']
+    while True:
+        try:
+            publish(config_topic, client, config, True, 2)
+            logging.info(f"{config_topic} -> {config}")
+        except Exception as e:
+            logging.error(e)
+            pass
+        try:
+            state = asyncio.run(get_snmp(req))
+            publish(state_topic, client, state, False, 0)
+            logging.info(f"{state_topic} -> {state}")
+        except Exception as e:
+            logging.error(e)
+            pass
+        sleep(2)
+
 
 req = {
-        "mqtt_topic": "mikrotik_hex",
+        "device_name": "mikrotik_hex",
         "ip": "192.168.10.2",
         "snmp_community": "public",
-        "oids": {
-            "stln_In": "1.3.6.1.2.1.2.2.1.10.12",
-            "stln_Out": "1.3.6.1.2.1.2.2.1.16.12"
-            }
+        "oids": [
+            {"name": "stln_vpn_in",
+             "oid": ".1.3.6.1.2.1.2.2.1.10.12",
+             "type": int,
+             "HA_device_class": "data_size",
+             "HA_platform": "sensor",
+             "HA_unit": "bit"
+             },
+            {"name": "stlon_vpn_out",
+             "oid": ".1.3.6.1.2.1.2.2.1.16.12",
+             "type": int,
+             "HA_device_class": "data_size",
+             "HA_platform": "sensor",
+             "HA_unit": "bit"
+             },
+            {"name": "stln_vpn_status",
+             "oid": ".1.3.6.1.2.1.2.2.1.8.12",
+             "type": bool,
+             "HA_device_class": "connectivity",
+             "HA_platform": "binary_sensor",
+             }
+            ]
         }
 
-asyncio.run(run(req))
+mqtt_config = {
+        "broker": "192.168.10.202",
+        "port": 1883,
+        "client_id": f"snmp-mqtt-{random.randint(0, 1000)}",
+        "user": "snmp2mqtt",
+        "password": "snmp_2_MQTT"
+        }
+
+
+send_to_mqtt()