76 lines
3.1 KiB
Python
76 lines
3.1 KiB
Python
# Copyright 2018 AT&T Intellectual Property. All other rights reserved.
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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from drydock_provisioner.orchestrator.validations.validators import Validators
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class MtuRational(Validators):
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MIN_MTU_SIZE = 1280
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MAX_MTU_SIZE = 65536
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def __init__(self):
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super().__init__('MTU Rationality', 'DD2003')
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def run_validation(self, site_design, orchestrator=None):
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"""
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Ensure that the MTU for each network is equal or less than the MTU defined
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for the parent NetworkLink for that network.
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Ensure that each defined MTU is a rational size, say > 1400 and < 64000
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"""
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network_links = site_design.network_links or []
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networks = site_design.networks or []
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parent_mtu_check = {}
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for network_link in network_links:
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mtu = network_link.mtu
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if mtu and (mtu < MtuRational.MIN_MTU_SIZE
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or mtu > MtuRational.MAX_MTU_SIZE):
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msg = ("MTU must be between %d and %d, value is %d" %
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(MtuRational.MIN_MTU_SIZE, MtuRational.MAX_MTU_SIZE,
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mtu))
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self.report_error(
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msg, [network_link.doc_ref],
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"Define a valid MTU. Standard is 1500, Jumbo is 9100.")
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# add assigned network to dict with parent mtu
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assigned_network = network_link.native_network
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parent_mtu_check[assigned_network] = mtu
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for network in networks:
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network_mtu = network.mtu
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if network_mtu and (network_mtu < MtuRational.MIN_MTU_SIZE
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or network_mtu > MtuRational.MAX_MTU_SIZE):
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msg = ("MTU must be between %d and %d, value is %d" %
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(MtuRational.MIN_MTU_SIZE, MtuRational.MAX_MTU_SIZE,
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mtu))
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self.report_error(
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msg, [network.doc_ref],
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"Define a valid MTU. Standard is 1500, Jumbo is 9100.")
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name = network.name
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parent_mtu = parent_mtu_check.get(name)
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if network_mtu and parent_mtu:
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# check to make sure mtu for network is <= parent network link
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if network_mtu > parent_mtu:
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msg = 'MTU must be <= the parent Network Link; for Network %s' % (
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network.name)
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self.report_error(msg, [
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network.doc_ref
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], "Define a MTU less than or equal to that of the carrying network link."
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)
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return
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