13c15ff73f
Historically, Daisy's discoverd is a fork from ironic-discoverd without changing package name. This has problems: 1) When user want to install daisy but there is already a ironic-discoverd which from OpenStack, then daisy's discoverd will not be installed due to already existed. 2) When user already installed Daisy's discoverd and later do yum update, then daisy's discoverd will be replaced by ironic-discoverd which from OpenStack. Both scenarios above will results in Daisy does not work. So This PS changes ironic-discoverd to daisy-discoverd. Change-Id: Ic505feb12271dd87e5781da28f79ca604d49374e Signed-off-by: Zhijiang Hu <hu.zhijiang@zte.com.cn>
83 lines
3.0 KiB
Python
Executable File
83 lines
3.0 KiB
Python
Executable File
# 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
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# 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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"""Base code for plugins support."""
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import abc
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import six
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from stevedore import named
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from daisy_discoverd import conf
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@six.add_metaclass(abc.ABCMeta)
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class ProcessingHook(object): # pragma: no cover
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"""Abstract base class for introspection data processing hooks."""
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def before_processing(self, node_info):
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"""Hook to run before any other data processing.
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This hook is run even before sanity checks.
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:param node_info: raw information sent by the ramdisk, may be modified
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by the hook.
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:returns: nothing.
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"""
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def before_update(self, node, ports, node_info):
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"""Hook to run before Ironic node update.
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This hook is run after node is found and ports are created,
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just before the node is updated with the data.
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:param node: Ironic node as returned by the Ironic client, should not
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be modified directly by the hook.
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:param ports: Ironic ports created by discoverd, also should not be
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updated directly.
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:param node_info: processed data from the ramdisk.
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:returns: tuple (node patches, port patches) where
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*node_patches* is a list of JSON patches [RFC 6902] to apply
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to the node, *port_patches* is a dict where keys are
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port MAC's, values are lists of JSON patches, e.g.
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::
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(
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[{'op': 'add', 'path': '/extra/foo', 'value': 'bar'}],
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{'11:22:33:44:55:55': [
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{'op': 'add', 'path': '/extra/foo', 'value': 'bar'}
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]}
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)
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[RFC 6902] - http://tools.ietf.org/html/rfc6902
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"""
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_HOOKS_MGR = None
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def processing_hooks_manager(*args):
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"""Create a Stevedore extension manager for processing hooks.
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:param args: arguments to pass to the hooks constructor.
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"""
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global _HOOKS_MGR
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if _HOOKS_MGR is None:
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names = [x.strip()
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for x in conf.get('discoverd', 'processing_hooks').split(',')
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if x.strip()]
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_HOOKS_MGR = named.NamedExtensionManager('daisy_discoverd.hooks',
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names=names,
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invoke_on_load=True,
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invoke_args=args,
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name_order=True)
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return _HOOKS_MGR
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