mirror of
https://github.com/facebook/sapling.git
synced 2024-12-27 06:52:23 +03:00
Repo converter: New class "repomanifest"
Summary: Right now, all of our manifest parsing and evaluation is in the repo() class, but this is a design mistake. Over a repo's convert lifetime, a single repo will have many different manifests, based on branch, and location in the commit history. What's worse is that the current design makes it hard to build unit tests and new features like include evaluation. This commit creates a whole new class called repomanifest, that represents a specific manifest (and its included files). It also has unit tests to test the various operations that the manifest performs, such as path and revision mapping. This commit does not modify the existing converter code outside of the class to use this new implementation. Reviewed By: tchebb Differential Revision: D19402995 fbshipit-source-id: b97dadcc595c6332f4495460618317194873a780
This commit is contained in:
Michael Devine
Facebook Github Bot
parent
251fe1b775
commit
0a46a14017
@ -7,6 +7,7 @@ from __future__ import absolute_import
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from .conversionrevision import conversionrevision
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from .repo_source import gitutil, repo, repo_source
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from .repomanifest import repomanifest
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__all__ = ["conversionrevision", "repo_source"]
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__all__ = ["conversionrevision", "repomanifest", "repo_source"]
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326
eden/scm/edenscm/hgext/convert/repo/repomanifest.py
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326
eden/scm/edenscm/hgext/convert/repo/repomanifest.py
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@ -0,0 +1,326 @@
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# Copyright (c) Facebook, Inc. and its affiliates.
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#
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# This software may be used and distributed according to the terms of the
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# GNU General Public License version 2.
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# repo_source.py - Google Repo support for the convert extension (EXPERIMENTAL)
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from __future__ import absolute_import
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import re
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# pyre-fixme[21]: Could not find `dom`.
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import xml.dom.minidom
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from typing import Any, Callable, Dict, List, Optional, Tuple, Union
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from edenscm.hgext.convert import common
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from edenscm.mercurial.i18n import _
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class InvalidManifestException(Exception):
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"""Represents an exception caused by a manifest that violates the rules for manifest contents."""
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pass
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class repomanifest(object):
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"""Represents a specific instance of a repo's manifest. It's important to
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keep this separate from the repo object because one repo's manifest will
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change by version and branch."""
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@classmethod
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def fromgit(cls, ui, gitpath, version, filepath):
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# type: (Any, str, str, str) -> Any
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"""Fetches the contents of a repo manifest
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ui: user interface context
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gitpath: the root directory of the manifest git repo
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version: the commit hash or branch name of the manifest to fetch
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filepath: the filename of the manifest to fetch
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returns: a repo manifest object representing that manifest
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"""
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# TODO: arg checking including path
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def fetchfromgit(filename):
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# type: (str) -> str
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commandline = common.commandline(ui, "git")
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output, exitcode = commandline.run(
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"-C", gitpath, "show", "%s:%s" % (version, filename)
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)
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commandline.checkexit(
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exitcode, _("Failed to get manifest %s:%s") % (version, filename)
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)
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return output
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return repomanifest(filepath, fetchfn=fetchfromgit)
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@classmethod
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def frompath(cls, path):
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# type: (str) -> Any
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def fetchpath(path):
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# type: (str) -> str
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with open(path, "r") as f:
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text = f.read()
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return text
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return repomanifest(path, fetchfn=fetchpath)
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@classmethod
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def fromtext(cls, rootblobname, fileblobs):
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# type: (str, Dict[str, str]) -> Any
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"""Instantiates a manifest from one or more blobs of text. The root is treated as the root manifest and other blobs provided are available as includes.
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rootblobname: the name of blob in the dictionary to use as the root manifest
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fileblobs: dictionary of blobs of manifest data, keyed by name
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"""
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# TODO: arg checking
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if rootblobname not in fileblobs:
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raise KeyError(
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_('Could not find blob "%s" in dictionary of blobs') % rootblobname
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)
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fetchblobfn = lambda filename: fileblobs[filename]
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return repomanifest(rootblobname, fetchfn=fetchblobfn)
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DOM_ELEMENT_ANNOTATION = "annotation"
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DOM_ELEMENT_DEFAULT = "default"
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DOM_ELEMENT_INCLUDE = "include"
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DOM_ELEMENT_LINKFILE = "linkfile"
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DOM_ELEMENT_MANIFEST = "manifest"
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DOM_ELEMENT_PROJECT = "project"
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DOM_ELEMENT_REMOTE = "remote"
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DOM_ATTRIBUTE_DEST = "dest"
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DOM_ATTRIBUTE_FETCH = "fetch"
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DOM_ATTRIBUTE_GROUPS = "groups"
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DOM_ATTRIBUTE_NAME = "name"
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DOM_ATTRIBUTE_PATH = "path"
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DOM_ATTRIBUTE_REMOTE = "remote"
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DOM_ATTRIBUTE_REVISION = "revision"
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DOM_ATTRIBUTE_SRC = "src"
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DOM_ATTRIBUTE_VALUE = "value"
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def __init__(self, filename, fetchfn):
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# type: (str, Callable[[str], str]) -> None
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self._dom = self._normalize(filename, fetchfn)
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# indexing
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self._defaultelement = self._finddefaultelement()
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def _normalize(self, filename, fetchfn):
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# type: Callable[[str], str] -> xml.dom.minidom.Document
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# Breadth-first traversal of all includes to apply files
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# Merge includes into unified DOM
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roottext = fetchfn(filename)
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dom = xml.dom.minidom.parseString(roottext)
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while True:
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matches = dom.getElementsByTagName(self.DOM_ELEMENT_INCLUDE)
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if not matches:
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break
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for includenode in matches:
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includename = includenode.getAttribute(self.DOM_ATTRIBUTE_NAME)
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includetext = fetchfn(includename)
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includedom = xml.dom.minidom.parseString(includetext)
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insertmanifests = includedom.getElementsByTagName(
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self.DOM_ELEMENT_MANIFEST
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)
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if len(insertmanifests) == 0:
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raise InvalidManifestException(
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_('Could not find root <manifest> element in "%s"')
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% includename
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)
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elif len(insertmanifests) > 1:
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raise InvalidManifestException(
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_('Found more than one <manifest> element in "%s"')
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% includename
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)
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insertmanifest = insertmanifests[0]
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for node in insertmanifest.childNodes:
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newnode = dom.importNode(node, True)
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includenode.parentNode.insertBefore(newnode, includenode)
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includenode.parentNode.removeChild(includenode)
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return dom
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def _finddefaultelement(self):
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# type: () -> Optional[Any]
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"""Finds the DOM node representing the default element."""
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matches = self._dom.getElementsByTagName(self.DOM_ELEMENT_DEFAULT)
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if len(matches) == 0:
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return None
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elif len(matches) > 1:
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raise InvalidManifestException(
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_("Found more than one default element in manifest")
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)
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return matches[0]
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def _getprojectelement(self, projectname):
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# type: (str) -> Optional[Any]
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# TODO: Index this?
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matches = [
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projectelement
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for projectelement in self._dom.getElementsByTagName(
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self.DOM_ELEMENT_PROJECT
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)
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if projectelement.getAttribute(self.DOM_ATTRIBUTE_NAME) == projectname
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]
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return matches[-1] if matches else None
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def _getremoteelement(self, remotename):
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# type: (str) -> Optional[Any]
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matches = [
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remoteelement
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for remoteelement in self._dom.getElementsByTagName(self.DOM_ELEMENT_REMOTE)
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if remoteelement.getAttribute(self.DOM_ATTRIBUTE_NAME) == remotename
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]
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if len(matches) == 0:
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return None
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elif len(matches) > 1:
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raise InvalidManifestException(
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_('Manifest contains multiple remotes named "%s"') % remotename
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)
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return matches[0]
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def hasproject(self, projectname):
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# type: (str) -> bool
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"""Returns true if the project is defined in the manifest"""
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return self._getprojectelement(projectname) is not None
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@classmethod
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def _trygetelementattribute(cls, element, attributename):
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# type: (Optional[Any], str) -> Optional[str]
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if element is None:
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return None
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if not element.hasAttribute(attributename):
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return None
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return element.getAttribute(attributename)
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def _getprojectremotework(self, projectelement):
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# type: (Any) -> Optional[str]
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if projectelement is None:
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raise ValueError(_("projectelement may not be None"))
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attr = repomanifest.DOM_ATTRIBUTE_REMOTE
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remotename = repomanifest._trygetelementattribute(
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projectelement, attr
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) or repomanifest._trygetelementattribute(self._defaultelement, attr)
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return remotename
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def _ishash(self, text):
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return len(text) == 40 and re.match("^[0-9a-fA-F]{40}$", text)
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def _getprojectrevisionwork(self, projectelement):
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# type: (Any) -> str
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if projectelement is None:
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raise ValueError(_("projectelement may not be None"))
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remotename = self._getprojectremotework(projectelement)
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remoteelement = (
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self._getremoteelement(remotename) if remotename is not None else None
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)
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attr = repomanifest.DOM_ATTRIBUTE_REVISION
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revision = (
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repomanifest._trygetelementattribute(projectelement, attr)
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or repomanifest._trygetelementattribute(remoteelement, attr)
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or repomanifest._trygetelementattribute(self._defaultelement, attr)
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)
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if revision is None:
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raise ValueError(
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_('No revision specified anywhere for \"%s\"')
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% projectelement.getAttribute(self.DOM_ATTRIBUTE_NAME)
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)
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if self._ishash(revision):
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return revision
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else:
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return "%s/%s" % (remotename, revision)
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def getprojects(self):
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# type: () -> List[Tuple[str, str, str]]
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projects = [
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(
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projectelement.getAttribute(self.DOM_ATTRIBUTE_NAME),
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projectelement.getAttribute(self.DOM_ATTRIBUTE_PATH),
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self._getprojectrevisionwork(projectelement),
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)
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for projectelement in self._dom.getElementsByTagName(
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self.DOM_ELEMENT_PROJECT
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)
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]
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return projects
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def getprojectrevision(self, projectname, path=None):
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# type: (str, Union[None, str]) -> str
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"""Evaluates the version specified for the project either explicitly or with a default"""
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projectelement = self._getprojectelement(projectname)
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return self._getprojectrevisionwork(projectelement)
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def getprojectpaths(self, projectname):
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# type: (str) -> List[str]
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"""Finds the list of all repo paths where a project is mounted"""
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# TODO: Index this?
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matches = [
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projectelement
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for projectelement in self._dom.getElementsByTagName(
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self.DOM_ELEMENT_PROJECT
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)
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if projectelement.getAttribute(self.DOM_ATTRIBUTE_NAME) == projectname
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]
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return [
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projectelement.getAttribute(self.DOM_ATTRIBUTE_PATH)
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for projectelement in matches
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]
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def getprojectpathrevisions(self, projectname):
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# type: (str) -> Dict[str, str]
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"""Finds the mapping of all repo paths where a project is mounted to their revisions"""
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# TODO: Index this?
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matches = [
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projectelement
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for projectelement in self._dom.getElementsByTagName(
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self.DOM_ELEMENT_PROJECT
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)
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if projectelement.getAttribute(self.DOM_ATTRIBUTE_NAME) == projectname
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]
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return {
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projectelement.getAttribute(
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self.DOM_ATTRIBUTE_PATH
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): self._getprojectrevisionwork(projectelement)
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for projectelement in matches
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}
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def getprojectnameforpath(self, projectpath):
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# type: (str) -> Optional[str]
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"""Get the name of the Git project located at a particular repo path"""
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# TODO: Path normalization
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matches = [
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projectelement
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for projectelement in self._dom.getElementsByTagName(
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self.DOM_ELEMENT_PROJECT
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)
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if projectelement.getAttribute(self.DOM_ATTRIBUTE_PATH) == projectpath
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]
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return matches[-1] if matches else None
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def geturiforproject(self, projectname):
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# type: (str) -> str
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"""Constructs the URI"""
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projectelement = self._getprojectelement(projectname)
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if projectelement is None:
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raise LookupError(_('Could not find project "%s"') % projectname)
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remotename = self._getprojectremotework(projectelement)
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if remotename is None:
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raise InvalidManifestException(
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_('Project element "%s" does not have a remote') % projectname
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)
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remoteelement = self._getremoteelement(remotename)
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if remoteelement is None:
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raise InvalidManifestException(
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_('Could not find remote "%s" in the manifest') % remotename
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)
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baseuri = remoteelement.getAttribute(self.DOM_ATTRIBUTE_FETCH)
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uri = baseuri + "/" + projectname
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return uri
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@ -1,7 +1,7 @@
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import os
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import unittest
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from edenscm.hgext.convert.repo import conversionrevision, gitutil, repo
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from edenscm.hgext.convert.repo import conversionrevision, gitutil, repo, repomanifest
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from hghave import require
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@ -303,6 +303,219 @@ class conversionrevisiontest(unittest.TestCase):
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self.assertIsInstance(hash(rev), int)
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class repomanifesttest(unittest.TestCase):
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"""Tests implementation of the repomanifest class"""
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def test_fromtext(self):
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manifestblobs = {
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"default.xml": """<?xml version="1.0" encoding="UTF-8"?>
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<manifest>
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<remote
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name="origin"
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fetch="ssh://git-ro.vip.facebook.com/data/gitrepos"
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push="ssh://git.vip.facebook.com/data/gitrepos"
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pushurl="ssh://git.vip.facebook.com/data/gitrepos"/>
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<default
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remote="origin"
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revision="mydefaultbranch"/>
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<project name="foo/alpha" path="A"/>
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<project name="oculus/foo/bravo" path="vendor/b">
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<linkfile dest=".watchmanconfig" src="watchmanconfig"/>
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<annotation name="not_old" value="37"/>
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</project>
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</manifest>
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"""
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}
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manifest = repomanifest.fromtext("default.xml", manifestblobs)
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self.assertIsNotNone(manifest)
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def test_getprojectrevision(self):
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manifestblobs = {
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"manifest.xml": """<?xml version="1.0" encoding="UTF-8"?>
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<manifest>
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<remote
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name="origin"
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fetch="ssh://git-ro.vip.facebook.com/data/gitrepos"
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push="ssh://git.vip.facebook.com/data/gitrepos"
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pushurl="ssh://git.vip.facebook.com/data/gitrepos"/>
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<default
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remote="origin"
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revision="mydefaultbranch"/>
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<project name="foo/alpha" path="A"/>
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<project name="oculus/foo/bravo" path="vendor/b" revision="aosp-tb12">
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<linkfile dest=".watchmanconfig" src="watchmanconfig"/>
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<annotation name="not_old" value="37"/>
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</project>
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</manifest>
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"""
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}
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manifest = repomanifest.fromtext("manifest.xml", manifestblobs)
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self.assertEqual(
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manifest.getprojectrevision("foo/alpha"), "origin/mydefaultbranch"
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)
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self.assertEqual(
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manifest.getprojectrevision("oculus/foo/bravo"), "origin/aosp-tb12"
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)
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def test_getprojectpaths(self):
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manifestblobs = {
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"blob1": """<?xml version="1.0" encoding="UTF-8"?>
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<manifest>
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<remote
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name="origin"
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fetch="ssh://git-ro.vip.facebook.com/data/gitrepos"
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push="ssh://git.vip.facebook.com/data/gitrepos"
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pushurl="ssh://git.vip.facebook.com/data/gitrepos"/>
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<default
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remote="origin"
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revision="mydefaultbranch"/>
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<project name="foo/alpha" path="A"/>
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<project name="oculus/foo/bravo" path="vendor/b/monterey" revision="monterey" />
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<project name="oculus/foo/bravo" path="vendor/b/pacific" revision="pacific" />
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</manifest>
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"""
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}
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manifest = repomanifest.fromtext("blob1", manifestblobs)
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self.assertEqual(manifest.getprojectpaths("foo/alpha"), ["A"])
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self.assertEqual(
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manifest.getprojectpaths("oculus/foo/bravo"),
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["vendor/b/monterey", "vendor/b/pacific"],
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)
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def test_getprojectpathrevisions(self):
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manifestblobs = {
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"default.xml": """<?xml version="1.0" encoding="UTF-8"?>
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<manifest>
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<remote
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name="origin"
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fetch="ssh://git-ro.vip.facebook.com/data/gitrepos"
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push="ssh://git.vip.facebook.com/data/gitrepos"
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pushurl="ssh://git.vip.facebook.com/data/gitrepos"/>
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<remote name="myremote"/>
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<default
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remote="myremote"
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revision="mydefaultbranch"/>
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<project name="foo/alpha" path="A" remote="origin"/>
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<project name="oculus/foo/bravo" path="vendor/b/monterey" revision="monterey" />
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<project name="oculus/foo/bravo" path="vendor/b/pacific" revision="pacific" />
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</manifest>
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"""
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}
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manifest = repomanifest.fromtext("default.xml", manifestblobs)
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self.assertEqual(
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manifest.getprojectpathrevisions("foo/alpha"),
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{"A": "origin/mydefaultbranch"},
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)
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self.assertEqual(
|
||||
manifest.getprojectpathrevisions("oculus/foo/bravo"),
|
||||
{
|
||||
"vendor/b/monterey": "myremote/monterey",
|
||||
"vendor/b/pacific": "myremote/pacific",
|
||||
},
|
||||
)
|
||||
|
||||
def test_getprojects(self):
|
||||
manifestblobs = {
|
||||
"default.xml": """<?xml version="1.0" encoding="UTF-8"?>
|
||||
<manifest>
|
||||
<remote
|
||||
name="origin"
|
||||
fetch="ssh://git-ro.vip.facebook.com/data/gitrepos"
|
||||
push="ssh://git.vip.facebook.com/data/gitrepos"
|
||||
pushurl="ssh://git.vip.facebook.com/data/gitrepos"/>
|
||||
|
||||
<default
|
||||
remote="origin"
|
||||
revision="mydefaultbranch"/>
|
||||
|
||||
<project name="foo/alpha" path="A"/>
|
||||
<project name="oculus/foo/bravo" path="vendor/b/monterey" revision="monterey" />
|
||||
<project name="oculus/foo/bravo" path="vendor/b/pacific" revision="pacific" />
|
||||
</manifest>
|
||||
"""
|
||||
}
|
||||
manifest = repomanifest.fromtext("default.xml", manifestblobs)
|
||||
expected = [
|
||||
("foo/alpha", "A", "origin/mydefaultbranch"),
|
||||
("oculus/foo/bravo", "vendor/b/monterey", "origin/monterey"),
|
||||
("oculus/foo/bravo", "vendor/b/pacific", "origin/pacific"),
|
||||
]
|
||||
self.assertEqual(manifest.getprojects(), expected)
|
||||
|
||||
def test_getprojects_hashes(self):
|
||||
manifestblobs = {
|
||||
"default.xml": """<?xml version="1.0" encoding="UTF-8"?>
|
||||
<manifest>
|
||||
<remote
|
||||
name="origin"
|
||||
fetch="ssh://git-ro.vip.facebook.com/data/gitrepos"
|
||||
push="ssh://git.vip.facebook.com/data/gitrepos"
|
||||
pushurl="ssh://git.vip.facebook.com/data/gitrepos"/>
|
||||
|
||||
<default
|
||||
remote="origin"
|
||||
revision="mydefaultbranch"/>
|
||||
|
||||
<project name="foo/alpha" path="A"/>
|
||||
<project name="oculus/foo/bravo" path="vendor/b/monterey" revision="monterey" />
|
||||
<project name="oculus/foo/bravo" path="vendor/b/pacific" revision="5fa2a4dbfb5616ffd2d32702f6f97be331e665a6" />
|
||||
</manifest>
|
||||
"""
|
||||
}
|
||||
manifest = repomanifest.fromtext("default.xml", manifestblobs)
|
||||
expected = [
|
||||
("foo/alpha", "A", "origin/mydefaultbranch"),
|
||||
("oculus/foo/bravo", "vendor/b/monterey", "origin/monterey"),
|
||||
(
|
||||
"oculus/foo/bravo",
|
||||
"vendor/b/pacific",
|
||||
"5fa2a4dbfb5616ffd2d32702f6f97be331e665a6",
|
||||
),
|
||||
]
|
||||
self.assertEqual(manifest.getprojects(), expected)
|
||||
|
||||
def test_include(self):
|
||||
manifestblobs = {
|
||||
"default.xml": """<?xml version="1.0" encoding="UTF-8"?>
|
||||
<manifest>
|
||||
<remote
|
||||
name="origin"
|
||||
fetch="ssh://git-ro.vip.facebook.com/data/gitrepos"
|
||||
push="ssh://git.vip.facebook.com/data/gitrepos"
|
||||
pushurl="ssh://git.vip.facebook.com/data/gitrepos"/>
|
||||
|
||||
<default
|
||||
remote="origin"
|
||||
revision="mydefaultbranch"/>
|
||||
|
||||
<include name="include-example.xml"/>
|
||||
<project name="foo/alpha" path="A"/>
|
||||
<project name="oculus/foo/bravo" path="vendor/b/monterey" revision="monterey" />
|
||||
<project name="oculus/foo/bravo" path="vendor/b/pacific" revision="pacific" />
|
||||
</manifest>
|
||||
""",
|
||||
"include-example.xml": """<?xml version="1.0" encoding="UTF-8"?>
|
||||
<manifest>
|
||||
<project name="include-c" path="include/c" />
|
||||
</manifest>
|
||||
""",
|
||||
}
|
||||
manifest = repomanifest.fromtext("default.xml", manifestblobs)
|
||||
self.assertTrue(manifest.hasproject("include-c"))
|
||||
self.assertEqual(manifest.getprojectpaths("include-c"), ["include/c"])
|
||||
self.assertEqual(
|
||||
manifest.getprojectrevision("include-c"), "origin/mydefaultbranch"
|
||||
)
|
||||
|
||||
|
||||
if __name__ == "__main__":
|
||||
import silenttestrunner
|
||||
|
||||
|
||||
Loading…
Reference in New Issue
Block a user