diff options
Diffstat (limited to 'app/discover/fetchers/aci/aci_fetch_leaf_to_spine_pnics.py')
| -rw-r--r-- | app/discover/fetchers/aci/aci_fetch_leaf_to_spine_pnics.py | 304 |
1 files changed, 153 insertions, 151 deletions
diff --git a/app/discover/fetchers/aci/aci_fetch_leaf_to_spine_pnics.py b/app/discover/fetchers/aci/aci_fetch_leaf_to_spine_pnics.py index c556459..463d4d8 100644 --- a/app/discover/fetchers/aci/aci_fetch_leaf_to_spine_pnics.py +++ b/app/discover/fetchers/aci/aci_fetch_leaf_to_spine_pnics.py @@ -1,151 +1,153 @@ -############################################################################### -# Copyright (c) 2017 Koren Lev (Cisco Systems), Yaron Yogev (Cisco Systems) # -# and others # -# # -# All rights reserved. This program and the accompanying materials # -# are made available under the terms of the Apache License, Version 2.0 # -# which accompanies this distribution, and is available at # -# http://www.apache.org/licenses/LICENSE-2.0 # -############################################################################### -import re - -from discover.fetchers.aci.aci_access import AciAccess, aci_config_required -from utils.inventory_mgr import InventoryMgr -from utils.util import decode_aci_dn, encode_aci_dn, get_object_path_part - - -# Fetches and adds to database: -# 1. ACI Switches with role "spine" -# -# Returns: -# 1. ACI Switch uplink pnics that belong to the "leaf" switch -# 2. ACI Switch downlink pnics that belong to "spine" switches mentioned above -# and are connected to the "leaf" switch -class AciFetchLeafToSpinePnics(AciAccess): - - def __init__(self): - super().__init__() - self.inv = InventoryMgr() - - def fetch_switches_by_role(self, role_name): - query_filter = {"query-target-filter": - "eq(fabricNode.role, \"{}\")".format(role_name)} - switches = self.fetch_objects_by_class("fabricNode", query_filter) - return [switch["attributes"] for switch in switches] - - def fetch_adjacent_connections(self, device_id): - dn = "/".join((device_id, "sys")) - - response = self.fetch_mo_data(dn, - {"query-target": "subtree", - "target-subtree-class": "lldpAdjEp"}) - - connections = self.get_objects_by_field_names(response, - "lldpAdjEp", "attributes") - return connections - - # Returns: - # List of: - # 1. Switches with role "spine" - # 2. Downlink pnic id for spine switch - # 3. Uplink pnic id for leaf switch - def fetch_spines_and_pnics_by_leaf_id(self, leaf_id): - spine_switches = self.fetch_switches_by_role("spine") - adjacent_devices = self.fetch_adjacent_connections(leaf_id) - spines = [] - for spine in spine_switches: - # Check if spine switch is connected to current leaf switch - connection = next((d for d in adjacent_devices - if spine["name"] == d["sysName"]), - None) - if connection: - try: - # Extract pnics from adjacency data - uplink_pnic = re.match(".*\[(.+?)\].*", - connection["dn"]).group(1) - downlink_pnic = re.match(".*\[(.+?)\].*", - connection["portDesc"]).group(1) - spines.append({ - "device": spine, - "downlink_pnic": downlink_pnic, - "uplink_pnic": uplink_pnic - }) - except AttributeError: - continue # TODO: probably raise an exception - - return spines - - @aci_config_required(default=[]) - def get(self, db_leaf_pnic_id): - environment = self.get_env() - leaf_pnic = self.inv.get_by_id(environment=environment, - item_id=db_leaf_pnic_id) - leaf_switch_id = leaf_pnic['switch'] - - # Decode aci leaf switch id from db format - aci_leaf_pnic_id = decode_aci_dn(db_leaf_pnic_id) - aci_leaf_id = re.match("switch-(.+?)-leaf", aci_leaf_pnic_id).group(1) - - # Fetch all leaf-to-spine connectivity data - spines_with_pnics = self.fetch_spines_and_pnics_by_leaf_id(aci_leaf_id) - pnics = [] - for spine_with_pnic in spines_with_pnics: - spine = spine_with_pnic["device"] - downlink_pnic_id = spine_with_pnic["downlink_pnic"] - uplink_pnic_id = spine_with_pnic["uplink_pnic"] - - # Add spine switch to db if it's not there yet - spine_id_match = re.match("topology/(.+)", spine["dn"]) - if not spine_id_match: - raise ValueError("Failed to fetch spine switch id " - "from switch dn: {}".format(spine["dn"])) - - aci_spine_id = spine_id_match.group(1) - db_spine_id = "-".join(("switch", encode_aci_dn(aci_spine_id), - spine["role"])) - if not self.inv.get_by_id(environment, db_spine_id): - spine_json = { - "id": db_spine_id, - "type": "switch", - "aci_document": spine - } - # Region name is the same as region id - region_id = get_object_path_part(leaf_pnic["name_path"], - "Regions") - region = self.inv.get_by_id(environment, region_id) - self.inv.save_inventory_object(o=spine_json, parent=region, - environment=environment) - - # Add downlink and uplink pnics to results list, - # including their mutual connection data - # (see "connected_to" field). - db_downlink_pnic_id = "-".join((db_spine_id, - encode_aci_dn(downlink_pnic_id))) - db_uplink_pnic_id = "-".join((leaf_pnic["switch"], - encode_aci_dn(uplink_pnic_id))) - - downlink_pnic_json = { - "id": db_downlink_pnic_id, - "type": "pnic", - "role": "downlink", - "pnic_type": "switch", - "connected_to": db_uplink_pnic_id, - "switch": db_spine_id, - "parent_id": db_spine_id, - "aci_document": {} # TODO: what can we add here? - } - - uplink_pnic_json = { - "id": db_uplink_pnic_id, - "type": "pnic", - "role": "uplink", - "pnic_type": "switch", - "connected_to": db_downlink_pnic_id, - "switch": leaf_switch_id, - "parent_id": leaf_switch_id, - "aci_document": {} # TODO: what can we add here? - } - - pnics.extend([downlink_pnic_json, uplink_pnic_json]) - - return pnics +###############################################################################
+# Copyright (c) 2017 Koren Lev (Cisco Systems), Yaron Yogev (Cisco Systems) #
+# and others #
+# #
+# All rights reserved. This program and the accompanying materials #
+# are made available under the terms of the Apache License, Version 2.0 #
+# which accompanies this distribution, and is available at #
+# http://www.apache.org/licenses/LICENSE-2.0 #
+###############################################################################
+import re
+
+from discover.fetchers.aci.aci_access import AciAccess, aci_config_required
+from utils.inventory_mgr import InventoryMgr
+from utils.util import decode_aci_dn, encode_aci_dn, get_object_path_part
+
+
+# Fetches and adds to database:
+# 1. ACI Switches with role "spine"
+#
+# Returns:
+# 1. ACI Switch uplink pnics that belong to the "leaf" switch
+# 2. ACI Switch downlink pnics that belong to "spine" switches mentioned above
+# and are connected to the "leaf" switch
+class AciFetchLeafToSpinePnics(AciAccess):
+
+ def __init__(self):
+ super().__init__()
+ self.inv = InventoryMgr()
+
+ def fetch_switches_by_role(self, role_name):
+ query_filter = {"query-target-filter":
+ "eq(fabricNode.role, \"{}\")".format(role_name)}
+ switches = self.fetch_objects_by_class("fabricNode", query_filter)
+ return [switch["attributes"] for switch in switches]
+
+ def fetch_adjacent_connections(self, device_id):
+ dn = "/".join((device_id, "sys"))
+
+ response = self.fetch_mo_data(dn,
+ {"query-target": "subtree",
+ "target-subtree-class": "lldpAdjEp"})
+
+ connections = self.get_objects_by_field_names(response,
+ "lldpAdjEp", "attributes")
+ return connections
+
+ # Returns:
+ # List of:
+ # 1. Switches with role "spine"
+ # 2. Downlink pnic id for spine switch
+ # 3. Uplink pnic id for leaf switch
+ def fetch_spines_and_pnics_by_leaf_id(self, leaf_id):
+ spine_switches = self.fetch_switches_by_role("spine")
+ adjacent_devices = self.fetch_adjacent_connections(leaf_id)
+ spines = []
+ for spine in spine_switches:
+ # Check if spine switch is connected to current leaf switch
+ connection = next((d for d in adjacent_devices
+ if spine["name"] == d["sysName"]),
+ None)
+ if connection:
+ try:
+ # Extract pnics from adjacency data
+ uplink_pnic = re.match(".*\[(.+?)\].*",
+ connection["dn"]).group(1)
+ downlink_pnic = re.match(".*\[(.+?)\].*",
+ connection["portDesc"]).group(1)
+ spines.append({
+ "device": spine,
+ "downlink_pnic": downlink_pnic,
+ "uplink_pnic": uplink_pnic
+ })
+ except AttributeError:
+ continue # TODO: probably raise an exception
+
+ return spines
+
+ @aci_config_required(default=[])
+ def get(self, db_leaf_pnic_id):
+ environment = self.get_env()
+ leaf_pnic = self.inv.get_by_id(environment=environment,
+ item_id=db_leaf_pnic_id)
+ leaf_switch_id = leaf_pnic['switch']
+
+ # Decode aci leaf switch id from db format
+ aci_leaf_pnic_id = decode_aci_dn(db_leaf_pnic_id)
+ aci_leaf_id = re.match("switch-(.+?)-leaf", aci_leaf_pnic_id).group(1)
+
+ # Fetch all leaf-to-spine connectivity data
+ spines_with_pnics = self.fetch_spines_and_pnics_by_leaf_id(aci_leaf_id)
+ pnics = []
+ for spine_with_pnic in spines_with_pnics:
+ spine = spine_with_pnic["device"]
+ downlink_pnic_id = spine_with_pnic["downlink_pnic"]
+ uplink_pnic_id = spine_with_pnic["uplink_pnic"]
+
+ # Add spine switch to db if it's not there yet
+ spine_id_match = re.match("topology/(.+)", spine["dn"])
+ if not spine_id_match:
+ raise ValueError("Failed to fetch spine switch id "
+ "from switch dn: {}".format(spine["dn"]))
+
+ aci_spine_id = spine_id_match.group(1)
+ db_spine_id = "-".join(("switch", encode_aci_dn(aci_spine_id),
+ spine["role"]))
+ if not self.inv.get_by_id(environment, db_spine_id):
+ spine_json = {
+ "id": db_spine_id,
+ "type": "switch",
+ "aci_document": spine
+ }
+ # Region name is the same as region id
+ region_id = get_object_path_part(leaf_pnic["name_path"],
+ "Regions")
+ region = self.inv.get_by_id(environment, region_id)
+ self.inv.save_inventory_object(o=spine_json, parent=region,
+ environment=environment)
+
+ # Add downlink and uplink pnics to results list,
+ # including their mutual connection data
+ # (see "connected_to" field).
+ db_downlink_pnic_id = "-".join((db_spine_id,
+ encode_aci_dn(downlink_pnic_id)))
+ db_uplink_pnic_id = "-".join((leaf_pnic["switch"],
+ encode_aci_dn(uplink_pnic_id)))
+
+ downlink_pnic_json = {
+ "id": db_downlink_pnic_id,
+ "type": "pnic",
+ "role": "downlink",
+ "pnic_type": "switch",
+ "connected_to": db_uplink_pnic_id,
+ "switch": db_spine_id,
+ "parent_id": db_spine_id,
+ "parent_type": "switch",
+ "aci_document": {} # TODO: what can we add here?
+ }
+
+ uplink_pnic_json = {
+ "id": db_uplink_pnic_id,
+ "type": "pnic",
+ "role": "uplink",
+ "pnic_type": "switch",
+ "connected_to": db_downlink_pnic_id,
+ "switch": leaf_switch_id,
+ "parent_id": leaf_switch_id,
+ "parent_type": "switch",
+ "aci_document": {} # TODO: what can we add here?
+ }
+
+ pnics.extend([downlink_pnic_json, uplink_pnic_json])
+
+ return pnics
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