Mercurial > hg-stable
view tests/test-journal.t @ 30745:c1b7b2285522
revlog: flag processor
Add the ability for revlog objects to process revision flags and apply
registered transforms on read/write operations.
This patch introduces:
- the 'revlog._processflags()' method that looks at revision flags and applies
flag processors registered on them. Due to the need to handle non-commutative
operations, flag transforms are applied in stable order but the order in which
the transforms are applied is reversed between read and write operations.
- the 'addflagprocessor()' method allowing to register processors on flags.
Flag processors are defined as a 3-tuple of (read, write, raw) functions to be
applied depending on the operation being performed.
- an update on 'revlog.addrevision()' behavior. The current flagprocessor design
relies on extensions to wrap around 'addrevision()' to set flags on revision
data, and on the flagprocessor to perform the actual transformation of its
contents. In the lfs case, this means we need to process flags before we meet
the 2GB size check, leading to performing some operations before it happens:
- if flags are set on the revision data, we assume some extensions might be
modifying the contents using the flag processor next, and we compute the
node for the original revision data (still allowing extension to override
the node by wrapping around 'addrevision()').
- we then invoke the flag processor to apply registered transforms (in lfs's
case, drastically reducing the size of large blobs).
- finally, we proceed with the 2GB size check.
Note: In the case a cachedelta is passed to 'addrevision()' and we detect the
flag processor modified the revision data, we chose to trust the flag processor
and drop the cachedelta.
author | Remi Chaintron <remi@fb.com> |
---|---|
date | Tue, 10 Jan 2017 16:15:21 +0000 |
parents | 6d11ae3c4c4b |
children | c6061cadb400 |
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Tests for the journal extension; records bookmark locations. $ cat >> testmocks.py << EOF > # mock out util.getuser() and util.makedate() to supply testable values > import os > from mercurial import util > def mockgetuser(): > return 'foobar' > > def mockmakedate(): > filename = os.path.join(os.environ['TESTTMP'], 'testtime') > try: > with open(filename, 'rb') as timef: > time = float(timef.read()) + 1 > except IOError: > time = 0.0 > with open(filename, 'wb') as timef: > timef.write(str(time)) > return (time, 0) > > util.getuser = mockgetuser > util.makedate = mockmakedate > EOF $ cat >> $HGRCPATH << EOF > [extensions] > journal= > testmocks=`pwd`/testmocks.py > EOF Setup repo $ hg init repo $ cd repo Test empty journal $ hg journal previous locations of '.': no recorded locations $ hg journal foo previous locations of 'foo': no recorded locations Test that working copy changes are tracked $ echo a > a $ hg commit -Aqm a $ hg journal previous locations of '.': cb9a9f314b8b commit -Aqm a $ echo b > a $ hg commit -Aqm b $ hg journal previous locations of '.': 1e6c11564562 commit -Aqm b cb9a9f314b8b commit -Aqm a $ hg up 0 1 files updated, 0 files merged, 0 files removed, 0 files unresolved $ hg journal previous locations of '.': cb9a9f314b8b up 0 1e6c11564562 commit -Aqm b cb9a9f314b8b commit -Aqm a Test that bookmarks are tracked $ hg book -r tip bar $ hg journal bar previous locations of 'bar': 1e6c11564562 book -r tip bar $ hg book -f bar $ hg journal bar previous locations of 'bar': cb9a9f314b8b book -f bar 1e6c11564562 book -r tip bar $ hg up 1 files updated, 0 files merged, 0 files removed, 0 files unresolved updating bookmark bar $ hg journal bar previous locations of 'bar': 1e6c11564562 up cb9a9f314b8b book -f bar 1e6c11564562 book -r tip bar Test that bookmarks and working copy tracking is not mixed $ hg journal previous locations of '.': 1e6c11564562 up cb9a9f314b8b up 0 1e6c11564562 commit -Aqm b cb9a9f314b8b commit -Aqm a Test that you can list all entries as well as limit the list or filter on them $ hg book -r tip baz $ hg journal --all previous locations of the working copy and bookmarks: 1e6c11564562 baz book -r tip baz 1e6c11564562 bar up 1e6c11564562 . up cb9a9f314b8b bar book -f bar 1e6c11564562 bar book -r tip bar cb9a9f314b8b . up 0 1e6c11564562 . commit -Aqm b cb9a9f314b8b . commit -Aqm a $ hg journal --limit 2 previous locations of '.': 1e6c11564562 up cb9a9f314b8b up 0 $ hg journal bar previous locations of 'bar': 1e6c11564562 up cb9a9f314b8b book -f bar 1e6c11564562 book -r tip bar $ hg journal foo previous locations of 'foo': no recorded locations $ hg journal . previous locations of '.': 1e6c11564562 up cb9a9f314b8b up 0 1e6c11564562 commit -Aqm b cb9a9f314b8b commit -Aqm a $ hg journal "re:ba." previous locations of 're:ba.': 1e6c11564562 baz book -r tip baz 1e6c11564562 bar up cb9a9f314b8b bar book -f bar 1e6c11564562 bar book -r tip bar Test that verbose, JSON, template and commit output work $ hg journal --verbose --all previous locations of the working copy and bookmarks: 000000000000 -> 1e6c11564562 foobar baz 1970-01-01 00:00 +0000 book -r tip baz cb9a9f314b8b -> 1e6c11564562 foobar bar 1970-01-01 00:00 +0000 up cb9a9f314b8b -> 1e6c11564562 foobar . 1970-01-01 00:00 +0000 up 1e6c11564562 -> cb9a9f314b8b foobar bar 1970-01-01 00:00 +0000 book -f bar 000000000000 -> 1e6c11564562 foobar bar 1970-01-01 00:00 +0000 book -r tip bar 1e6c11564562 -> cb9a9f314b8b foobar . 1970-01-01 00:00 +0000 up 0 cb9a9f314b8b -> 1e6c11564562 foobar . 1970-01-01 00:00 +0000 commit -Aqm b 000000000000 -> cb9a9f314b8b foobar . 1970-01-01 00:00 +0000 commit -Aqm a $ hg journal --verbose -Tjson [ { "command": "up", "date": [5.0, 0], "name": ".", "newhashes": ["1e6c11564562b4ed919baca798bc4338bd299d6a"], "oldhashes": ["cb9a9f314b8b07ba71012fcdbc544b5a4d82ff5b"], "user": "foobar" }, { "command": "up 0", "date": [2.0, 0], "name": ".", "newhashes": ["cb9a9f314b8b07ba71012fcdbc544b5a4d82ff5b"], "oldhashes": ["1e6c11564562b4ed919baca798bc4338bd299d6a"], "user": "foobar" }, { "command": "commit -Aqm b", "date": [1.0, 0], "name": ".", "newhashes": ["1e6c11564562b4ed919baca798bc4338bd299d6a"], "oldhashes": ["cb9a9f314b8b07ba71012fcdbc544b5a4d82ff5b"], "user": "foobar" }, { "command": "commit -Aqm a", "date": [0.0, 0], "name": ".", "newhashes": ["cb9a9f314b8b07ba71012fcdbc544b5a4d82ff5b"], "oldhashes": ["0000000000000000000000000000000000000000"], "user": "foobar" } ] $ cat <<EOF >> $HGRCPATH > [templates] > j = "{oldhashes % '{node|upper}'} -> {newhashes % '{node|upper}'} > - user: {user} > - command: {command} > - date: {date|rfc3339date} > - newhashes: {newhashes} > - oldhashes: {oldhashes} > " > EOF $ hg journal -Tj -l1 previous locations of '.': CB9A9F314B8B07BA71012FCDBC544B5A4D82FF5B -> 1E6C11564562B4ED919BACA798BC4338BD299D6A - user: foobar - command: up - date: 1970-01-01T00:00:05+00:00 - newhashes: 1e6c11564562b4ed919baca798bc4338bd299d6a - oldhashes: cb9a9f314b8b07ba71012fcdbc544b5a4d82ff5b $ hg journal --commit previous locations of '.': 1e6c11564562 up changeset: 1:1e6c11564562 bookmark: bar bookmark: baz tag: tip user: test date: Thu Jan 01 00:00:00 1970 +0000 summary: b cb9a9f314b8b up 0 changeset: 0:cb9a9f314b8b user: test date: Thu Jan 01 00:00:00 1970 +0000 summary: a 1e6c11564562 commit -Aqm b changeset: 1:1e6c11564562 bookmark: bar bookmark: baz tag: tip user: test date: Thu Jan 01 00:00:00 1970 +0000 summary: b cb9a9f314b8b commit -Aqm a changeset: 0:cb9a9f314b8b user: test date: Thu Jan 01 00:00:00 1970 +0000 summary: a Test for behaviour on unexpected storage version information $ printf '42\0' > .hg/namejournal $ hg journal previous locations of '.': abort: unknown journal file version '42' [255] $ hg book -r tip doomed unsupported journal file version '42'