obsolete: don't use os.stat in repo.obsstore.__nonzero__ if it's static HTTP
If a repo is accessed via static HTTP, then we obviously can't use os.stat() to
just peek at the file size. Let's download the entire file to check its size.
Yes, this feels wasteful, but:
1. If we're cloning or pulling a repo from a static HTTP server, we need the
contents of the obsstore anyway.
2. Implementing statichttpvfs.stat() that uses HEAD will result in one more
request to a static-only HTTP server, which is already slow. Also parsing a
response to a HEAD request to construct os.stat_result is pretty hacky.
There's also a question of the remote server properly supporting HEAD method
and reporting at least file size.
3. Implementing statichttpvfs.stat() that uses GET is pretty much the same
thing as we do here, except we can't even cache the response easily, unlike
simply accessing obsstore._data, which is @propertycache'd.
Importing statichttprepo locally to avoid circular import.
See also: 4507bc001365 and commit message of f8f2ecdde4b5.
Differential Revision: https://phab.mercurial-scm.org/D12195
#testcases obsstore-off obsstore-on
$ cat << EOF >> $HGRCPATH
> [extensions]
> amend =
> EOF
#if obsstore-on
$ cat << EOF >> $HGRCPATH
> [experimental]
> evolution.createmarkers = True
> EOF
#endif
Prepare parent repo
-------------------
$ hg init r
$ cd r
$ echo a > a
$ hg ci -Am0
adding a
Link first subrepo
------------------
$ echo 's = s' >> .hgsub
$ hg add .hgsub
$ hg init s
amend without .hgsub
$ hg amend s
abort: can't commit subrepos without .hgsub
[255]
amend with subrepo
$ hg amend
saved backup bundle to * (glob) (obsstore-off !)
$ hg status --change .
A .hgsub
A .hgsubstate
A a
$ cat .hgsubstate
0000000000000000000000000000000000000000 s
Update subrepo
--------------
add new commit to be amended
$ echo a >> a
$ hg ci -m1
amend with dirty subrepo
$ echo a >> s/a
$ hg add -R s
adding s/a
$ hg amend
abort: uncommitted changes in subrepository "s"
(use --subrepos for recursive commit)
[255]
amend with modified subrepo
$ hg ci -R s -m0
$ hg amend
saved backup bundle to * (glob) (obsstore-off !)
$ hg status --change .
M .hgsubstate
M a
$ cat .hgsubstate
f7b1eb17ad24730a1651fccd46c43826d1bbc2ac s
revert subrepo change
$ hg up -R s -q null
$ hg amend
saved backup bundle to * (glob) (obsstore-off !)
$ hg status --change .
M a
Link another subrepo
--------------------
add new commit to be amended
$ echo b >> b
$ hg ci -qAm2
also checks if non-subrepo change is included
$ echo a >> a
amend with another subrepo
$ hg init t
$ echo b >> t/b
$ hg ci -R t -Am0
adding b
$ echo 't = t' >> .hgsub
$ hg amend
saved backup bundle to * (glob) (obsstore-off !)
$ hg status --change .
M .hgsub
M .hgsubstate
M a
A b
$ cat .hgsubstate
0000000000000000000000000000000000000000 s
bfb1a4fb358498a9533dabf4f2043d94162f1fcd t
Unlink one subrepo
------------------
add new commit to be amended
$ echo a >> a
$ hg ci -m3
$ echo 't = t' > .hgsub
--interactive won't silently ignore dirty subrepos
$ echo modified > t/b
$ hg amend --interactive --config ui.interactive=True
abort: uncommitted changes in subrepository "t"
[255]
$ hg amend --interactive --config ui.interactive=True --config ui.commitsubrepos=True
abort: uncommitted changes in subrepository "t"
[255]
$ hg -R t revert -q --all --no-backup
amend with one subrepo dropped
$ hg amend
saved backup bundle to * (glob) (obsstore-off !)
$ hg status --change .
M .hgsub
M .hgsubstate
M a
$ cat .hgsubstate
bfb1a4fb358498a9533dabf4f2043d94162f1fcd t
Unlink subrepos completely
--------------------------
add new commit to be amended
$ echo a >> a
$ hg ci -m3
amend with .hgsub removed
$ hg rm .hgsub
$ hg amend
saved backup bundle to * (glob) (obsstore-off !)
$ hg status --change .
M a
R .hgsub
R .hgsubstate
broken repositories will refuse to push
#if obsstore-off
$ hg up -q -C 2
#else
$ hg up -q -C 6
#endif
$ echo c >> t/b
$ hg amend -q -R t
$ hg init ../dest
$ hg init ../dest/t
$ hg init ../dest/s
$ hg push -q ../dest
abort: subrepo 't' is hidden in revision 04aa62396ec6 (obsstore-on !)
abort: subrepo 't' not found in revision 04aa62396ec6 (obsstore-off !)
[255]
... unless forced
$ hg push --force -q ../dest
$ hg verify -R ../dest
checking changesets
checking manifests
crosschecking files in changesets and manifests
checking files
checked 5 changesets with 12 changes to 4 files
checking subrepo links
subrepo 't' not found in revision 04aa62396ec6
subrepo 't' not found in revision 6bce99600681
$ cd ..