Antoine Van Elstraete
02b14979bc
Network health monitoring script with MQTT reporting for Home Assistant. - Ping, HTTP, and SNMP checkers - MQTT Discovery for automatic entity creation - Configurable check intervals Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
63 lines
1.9 KiB
Python
63 lines
1.9 KiB
Python
import time
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from pysnmp.hlapi import (
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SnmpEngine,
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CommunityData,
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UdpTransportTarget,
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ContextData,
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ObjectType,
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ObjectIdentity,
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getCmd,
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)
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from .base import BaseChecker, CheckResult
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class SnmpChecker(BaseChecker):
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def check(self) -> CheckResult:
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host = self.config["host"]
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port = self.config.get("port", 161)
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community = self.config.get("community", "public")
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oid = self.config.get("oid", "1.3.6.1.2.1.1.1.0") # sysDescr
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timeout_val = self.config.get("timeout", 5)
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start = time.time()
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try:
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iterator = getCmd(
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SnmpEngine(),
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CommunityData(community),
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UdpTransportTarget((host, port), timeout=timeout_val, retries=1),
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ContextData(),
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ObjectType(ObjectIdentity(oid))
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)
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error_indication, error_status, error_index, var_binds = next(iterator)
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response_time = (time.time() - start) * 1000 # ms
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if error_indication:
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return CheckResult(
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success=False,
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message=f"SNMP error: {error_indication}",
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response_time=None
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)
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elif error_status:
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return CheckResult(
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success=False,
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message=f"SNMP error: {error_status.prettyPrint()}",
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response_time=None
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)
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else:
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values = {str(oid): str(val) for oid, val in var_binds}
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return CheckResult(
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success=True,
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message="SNMP response OK",
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response_time=response_time,
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details=values
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)
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except Exception as e:
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return CheckResult(
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success=False,
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message=f"SNMP error: {e}",
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response_time=None
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)
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