Method Protocols.SNMP.agent()->set_get_oid_callback()
- Method set_get_oid_callback
void
set_get_oid_callback(string
oid
,function
(:void
)cb
)- Description
set the Get request callback function for an Object Identifier
- Parameter
oid
the string object identifier, such as 1.3.6.1.4.1.132.2 or an asterisk (*) to serve as the handler for all requests for which a handler is specified.
- Parameter
cb
the function to call when oid is requested by a manager the function should take 2 arguments: a string containing the requested oid and the body of the request as a mapping. The function should return an array containing 3 or 4 elements: The first is a boolean indicating success or failure. If success, the next 2 elements should be the SNMP data type of the result followed by the result itself. If failure, the next 2 elements should be the error-status such as Protocols.SNMP.ERROR_TOOBIG and the second is the error-index, if any. If a fourth array element is returned, it should contain the OID that the callback actually fetched (typically different from the requested OID for REQUEST_GETNEXT requests). This is needed for e.g. snmpwalk to work properly.
- Note
there can be only one callback per object identifier. calling this function more than once with the same oid will result in the new callback replacing the existing one.