129 lines
4.4 KiB
Python
129 lines
4.4 KiB
Python
# Copyright 2014 Rackspace Australia
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#
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# Licensed under the Apache License, Version 2.0 (the "License"); you may
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# not use this file except in compliance with the License. You may obtain
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# 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, WITHOUT
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# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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# License for the specific language governing permissions and limitations
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# under the License.
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import abc
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class BaseSource(object, metaclass=abc.ABCMeta):
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"""Base class for sources.
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A source class gives methods for fetching and updating changes. Each
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pipeline must have (only) one source. It is the canonical provider of the
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change to be tested.
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Defines the exact public methods that must be supplied."""
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def __init__(self, driver, connection, canonical_hostname, config=None):
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self.driver = driver
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self.connection = connection
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self.canonical_hostname = canonical_hostname
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self.config = config or {}
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@abc.abstractmethod
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def getRefSha(self, project, ref):
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"""Return a sha for a given project ref."""
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@abc.abstractmethod
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def isMerged(self, change, head=None):
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"""Determine if change is merged.
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If head is provided the change is checked if it is at head."""
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@abc.abstractmethod
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def canMerge(self, change, allow_needs, event=None, allow_refresh=False):
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"""Determine if change can merge.
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change: The change to check for mergeability
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allow_needs: The statuses/votes that are allowed to be missing on a
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change, typically the votes the pipeline would set itself
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before attempting to merge
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event: event information for log annotation
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allow_refresh: Allow refreshing of cached volatile data that cannot be
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reliably kept up to date using events.
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"""
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def postConfig(self):
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"""Called after configuration has been processed."""
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@abc.abstractmethod
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def getChange(self, event):
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"""Get the change representing an event.
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This method is called very frequently, and should generally
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return quickly. The connection is expected to cache change
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objects and automatically update them as related events are
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received.
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"""
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@abc.abstractmethod
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def getChangeByURL(self, url, event):
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"""Get the change corresponding to the supplied URL.
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The URL may may not correspond to this source; if it doesn't,
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or there is no change at that URL, return None.
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"""
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@abc.abstractmethod
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def getChangesDependingOn(self, change, projects, tenant):
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"""Return changes which depend on changes at the supplied URIs.
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Search this source for changes which depend on the supplied
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change. Generally the Change.uris attribute should be used to
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perform the search, as it contains a list of URLs without the
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scheme which represent a single change
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If the projects argument is None, search across all known
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projects. If it is supplied, the search may optionally be
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restricted to only those projects.
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The tenant argument can be used by the source to limit the
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search scope.
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"""
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@abc.abstractmethod
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def getProjectOpenChanges(self, project):
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"""Get the open changes for a project."""
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@abc.abstractmethod
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def getGitUrl(self, project):
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"""Get the git url for a project."""
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@abc.abstractmethod
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def getProject(self, name):
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"""Get a project."""
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@abc.abstractmethod
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def getProjectBranches(self, project, tenant):
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"""Get branches for a project
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This method is called very frequently, and should generally
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return quickly. The connection is expected to cache branch
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lists for all projects queried, and further, to automatically
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clear or update that cache when it observes branch creation or
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deletion events.
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"""
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@abc.abstractmethod
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def getRequireFilters(self, config):
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"""Return a list of ChangeFilters for the scheduler to match against.
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"""
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@abc.abstractmethod
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def getRejectFilters(self, config):
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"""Return a list of ChangeFilters for the scheduler to match against.
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"""
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