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project: Use dicts to keep track of copyfiles and linkfiles

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This avoids copying/linking the same file/link multiple times if a
copyfile/linkfile element with the same values has been specifed
multiple times. This can happen when including a common manifest that
uses an extend-project element that has a copyfile/linkfile element.

This uses dicts rather than sets to store the copyfiles and linkfiles to
make sure the order they are specified in the manifest is maintained.
For Python 3.7+, maintaining the order that keys are added to dicts is
guaranteed, and for Python 3.6 it happened to be true.

The _CopyFile class and the _LinkFile class are changed to inherit from
NamedTuple to be able to store them in dicts.

Change-Id: I9f5a80298b875251a81c5fe7d353e262d104fae4
Reviewed-on: https://gerrit-review.googlesource.com/c/git-repo/+/525322
Reviewed-by: Mike Frysinger <vapier@google.com>
Reviewed-by: Gavin Mak <gavinmak@google.com>
Tested-by: Peter Kjellerstedt <peter.kjellerstedt@axis.com>
Commit-Queue: Peter Kjellerstedt <peter.kjellerstedt@axis.com>
This commit is contained in:
Peter Kjellerstedt
2025-11-08 00:06:16 +01:00
committed by LUCI
parent 47c24b5c40
commit 412367bfaf
4 changed files with 131 additions and 40 deletions
Download Patch File Download Diff File Expand all files Collapse all files

13
docs/manifest-format.md
View File

@@ -453,10 +453,14 @@ Intermediate paths must not be symlinks either.
Parent directories of "dest" will be automatically created if missing.
The files are copied in the order they are specified in the manifests.
If multiple elements specify the same source and destination, they will
only be applied as one, based on the first occurence. Files are copied
before any links specified via linkfile elements are created.
### Element linkfile
It's just like copyfile and runs at the same time as copyfile but
instead of copying it creates a symlink.
It's just like copyfile, but instead of copying it creates a symlink.
The symlink is created at "dest" (relative to the top of the tree) and
points to the path specified by "src" which is a path in the project.
@@ -466,6 +470,11 @@ Parent directories of "dest" will be automatically created if missing.
The symlink target may be a file or directory, but it may not point outside
of the repo client.
The links are created in the order they are specified in the manifests.
If multiple elements specify the same source and destination, they will
only be applied as one, based on the first occurence. Links are created
after any files specified via copyfile elements are copied.
### Element remove-project
Deletes a project from the internal manifest table, possibly

13
man/repo-manifest.1
View File

@@ -521,10 +521,14 @@ Intermediate paths must not be symlinks either.
.PP
Parent directories of "dest" will be automatically created if missing.
.PP
The files are copied in the order they are specified in the manifests. If
multiple elements specify the same source and destination, they will only be
applied as one, based on the first occurence. Files are copied before any links
specified via linkfile elements are created.
.PP
Element linkfile
.PP
It's just like copyfile and runs at the same time as copyfile but instead of
copying it creates a symlink.
It's just like copyfile, but instead of copying it creates a symlink.
.PP
The symlink is created at "dest" (relative to the top of the tree) and points to
the path specified by "src" which is a path in the project.
@@ -534,6 +538,11 @@ Parent directories of "dest" will be automatically created if missing.
The symlink target may be a file or directory, but it may not point outside of
the repo client.
.PP
The links are created in the order they are specified in the manifests. If
multiple elements specify the same source and destination, they will only be
applied as one, based on the first occurence. Links are created after any files
specified via copyfile elements are copied.
.PP
Element remove\-project
.PP
Deletes a project from the internal manifest table, possibly allowing a

55
project.py
View File

@@ -390,22 +390,17 @@ def _SafeExpandPath(base, subpath, skipfinal=False):
return path
class _CopyFile:
class _CopyFile(NamedTuple):
"""Container for <copyfile> manifest element."""
def __init__(self, git_worktree, src, topdir, dest):
"""Register a <copyfile> request.
Args:
git_worktree: Absolute path to the git project checkout.
src: Relative path under |git_worktree| of file to read.
topdir: Absolute path to the top of the repo client checkout.
dest: Relative path under |topdir| of file to write.
"""
self.git_worktree = git_worktree
self.topdir = topdir
self.src = src
self.dest = dest
# Absolute path to the git project checkout.
git_worktree: str
# Relative path under |git_worktree| of file to read.
src: str
# Absolute path to the top of the repo client checkout.
topdir: str
# Relative path under |topdir| of file to write.
dest: str
def _Copy(self):
src = _SafeExpandPath(self.git_worktree, self.src)
@@ -439,22 +434,17 @@ class _CopyFile:
logger.error("error: Cannot copy file %s to %s", src, dest)
class _LinkFile:
class _LinkFile(NamedTuple):
"""Container for <linkfile> manifest element."""
def __init__(self, git_worktree, src, topdir, dest):
"""Register a <linkfile> request.
Args:
git_worktree: Absolute path to the git project checkout.
src: Target of symlink relative to path under |git_worktree|.
topdir: Absolute path to the top of the repo client checkout.
dest: Relative path under |topdir| of symlink to create.
"""
self.git_worktree = git_worktree
self.topdir = topdir
self.src = src
self.dest = dest
# Absolute path to the git project checkout.
git_worktree: str
# Target of symlink relative to path under |git_worktree|.
src: str
# Absolute path to the top of the repo client checkout.
topdir: str
# Relative path under |topdir| of symlink to create.
dest: str
def __linkIt(self, relSrc, absDest):
# Link file if it does not exist or is out of date.
@@ -633,8 +623,9 @@ class Project:
self.subprojects = []
self.snapshots = {}
self.copyfiles = []
self.linkfiles = []
# Use dicts to dedupe while maintaining declared order.
self.copyfiles = {}
self.linkfiles = {}
self.annotations = []
self.dest_branch = dest_branch
@@ -1794,7 +1785,7 @@ class Project:
Paths should have basic validation run on them before being queued.
Further checking will be handled when the actual copy happens.
"""
self.copyfiles.append(_CopyFile(self.worktree, src, topdir, dest))
self.copyfiles[_CopyFile(self.worktree, src, topdir, dest)] = True
def AddLinkFile(self, src, dest, topdir):
"""Mark |dest| to create a symlink (relative to |topdir|) pointing to
@@ -1805,7 +1796,7 @@ class Project:
Paths should have basic validation run on them before being queued.
Further checking will be handled when the actual link happens.
"""
self.linkfiles.append(_LinkFile(self.worktree, src, topdir, dest))
self.linkfiles[_LinkFile(self.worktree, src, topdir, dest)] = True
def AddAnnotation(self, name, value, keep):
self.annotations.append(Annotation(name, value, keep))

90
tests/test_manifest_xml.py
View File

@@ -1254,8 +1254,8 @@ class ExtendProjectElementTests(ManifestParseTestCase):
</manifest>
"""
)
self.assertEqual(manifest.projects[0].copyfiles[0].src, "foo")
self.assertEqual(manifest.projects[0].copyfiles[0].dest, "bar")
self.assertEqual(list(manifest.projects[0].copyfiles)[0].src, "foo")
self.assertEqual(list(manifest.projects[0].copyfiles)[0].dest, "bar")
self.assertEqual(
sort_attributes(manifest.ToXml().toxml()),
'<?xml version="1.0" ?><manifest>'
@@ -1267,6 +1267,47 @@ class ExtendProjectElementTests(ManifestParseTestCase):
"</manifest>",
)
def test_extend_project_duplicate_copyfiles(self):
root_m = self.manifest_dir / "root.xml"
root_m.write_text(
"""
<manifest>
<remote name="test-remote" fetch="http://localhost" />
<default remote="test-remote" revision="refs/heads/main" />
<project name="myproject" />
<include name="man1.xml" />
<include name="man2.xml" />
</manifest>
"""
)
(self.manifest_dir / "man1.xml").write_text(
"""
<manifest>
<include name="common.xml" />
</manifest>
"""
)
(self.manifest_dir / "man2.xml").write_text(
"""
<manifest>
<include name="common.xml" />
</manifest>
"""
)
(self.manifest_dir / "common.xml").write_text(
"""
<manifest>
<extend-project name="myproject">
<copyfile dest="bar" src="foo"/>
</extend-project>
</manifest>
"""
)
manifest = manifest_xml.XmlManifest(str(self.repodir), str(root_m))
self.assertEqual(len(manifest.projects[0].copyfiles), 1)
self.assertEqual(list(manifest.projects[0].copyfiles)[0].src, "foo")
self.assertEqual(list(manifest.projects[0].copyfiles)[0].dest, "bar")
def test_extend_project_linkfiles(self):
manifest = self.getXmlManifest(
"""
@@ -1280,8 +1321,8 @@ class ExtendProjectElementTests(ManifestParseTestCase):
</manifest>
"""
)
self.assertEqual(manifest.projects[0].linkfiles[0].src, "foo")
self.assertEqual(manifest.projects[0].linkfiles[0].dest, "bar")
self.assertEqual(list(manifest.projects[0].linkfiles)[0].src, "foo")
self.assertEqual(list(manifest.projects[0].linkfiles)[0].dest, "bar")
self.assertEqual(
sort_attributes(manifest.ToXml().toxml()),
'<?xml version="1.0" ?><manifest>'
@@ -1293,6 +1334,47 @@ class ExtendProjectElementTests(ManifestParseTestCase):
"</manifest>",
)
def test_extend_project_duplicate_linkfiles(self):
root_m = self.manifest_dir / "root.xml"
root_m.write_text(
"""
<manifest>
<remote name="test-remote" fetch="http://localhost" />
<default remote="test-remote" revision="refs/heads/main" />
<project name="myproject" />
<include name="man1.xml" />
<include name="man2.xml" />
</manifest>
"""
)
(self.manifest_dir / "man1.xml").write_text(
"""
<manifest>
<include name="common.xml" />
</manifest>
"""
)
(self.manifest_dir / "man2.xml").write_text(
"""
<manifest>
<include name="common.xml" />
</manifest>
"""
)
(self.manifest_dir / "common.xml").write_text(
"""
<manifest>
<extend-project name="myproject">
<linkfile dest="bar" src="foo"/>
</extend-project>
</manifest>
"""
)
manifest = manifest_xml.XmlManifest(str(self.repodir), str(root_m))
self.assertEqual(len(manifest.projects[0].linkfiles), 1)
self.assertEqual(list(manifest.projects[0].linkfiles)[0].src, "foo")
self.assertEqual(list(manifest.projects[0].linkfiles)[0].dest, "bar")
def test_extend_project_annotations(self):
manifest = self.getXmlManifest(
"""