Source code for ironic_inspector.plugins.lldp_basic

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"""LLDP Processing Hook for basic TLVs"""

import binascii

from ironic_inspector.common.i18n import _LW
from ironic_inspector.common import lldp_parsers
from ironic_inspector.plugins import base
from ironic_inspector import utils

LOG = utils.getProcessingLogger(__name__)

[docs]class LLDPBasicProcessingHook(base.ProcessingHook): """Process mandatory and optional LLDP packet fields Loop through raw LLDP TLVs and parse those from the basic management, 802.1, and 802.3 TLV sets. Store parsed data back to the ironic-inspector database. """ def _parse_lldp_tlvs(self, tlvs, node_info): """Parse LLDP TLVs into dictionary of name/value pairs :param tlvs: list of raw TLVs :param node_info: node being introspected :returns nv: dictionary of name/value pairs. The LLDP user-friendly names, e.g. "switch_port_id" are the keys """ # Generate name/value pairs for each TLV supported by this plugin. parser = lldp_parsers.LLDPBasicMgmtParser(node_info) for tlv_type, tlv_value in tlvs: try: data = bytearray(binascii.a2b_hex(tlv_value)) except TypeError as e: LOG.warning(_LW( "TLV value for TLV type %(tlv_type)d not in correct " "format, value must be in hexadecimal: %(msg)s"), {'tlv_type': tlv_type, 'msg': e}, node_info=node_info) continue if parser.parse_tlv(tlv_type, data): LOG.debug("Handled TLV type %d", tlv_type, node_info=node_info) else: LOG.debug("LLDP TLV type %d not handled", tlv_type, node_info=node_info) return parser.nv_dict
[docs] def before_update(self, introspection_data, node_info, **kwargs): """Process LLDP data and update all_interfaces with processed data""" inventory = utils.get_inventory(introspection_data) for iface in inventory['interfaces']: if_name = iface['name'] tlvs = iface.get('lldp') if tlvs is None: LOG.warning(_LW("No LLDP Data found for interface %s"), if_name, node_info=node_info) continue LOG.debug("Processing LLDP Data for interface %s", if_name, node_info=node_info) nv = self._parse_lldp_tlvs(tlvs, node_info) if nv: # Store lldp data per interface in "all_interfaces" iface_to_update = introspection_data['all_interfaces'][if_name] iface_to_update['lldp_processed'] = nv