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view tests/test-tag.t @ 40326:fed697fa1734
sqlitestore: file storage backend using SQLite
This commit provides an extension which uses SQLite to store file
data (as opposed to revlogs).
As the inline documentation describes, there are still several
aspects to the extension that are incomplete. But it's a start.
The extension does support basic clone, checkout, and commit
workflows, which makes it suitable for simple use cases.
One notable missing feature is support for "bundlerepos." This is
probably responsible for the most test failures when the extension
is activated as part of the test suite.
All revision data is stored in SQLite. Data is stored as zstd
compressed chunks (default if zstd is available), zlib compressed
chunks (default if zstd is not available), or raw chunks (if
configured or if a compressed delta is not smaller than the raw
delta). This makes things very similar to revlogs.
Unlike revlogs, the extension doesn't yet enforce a limit on delta
chain length. This is an obvious limitation and should be addressed.
This is somewhat mitigated by the use of zstd, which is much faster
than zlib to decompress.
There is a dedicated table for storing deltas. Deltas are stored
by the SHA-1 hash of their uncompressed content. The "fileindex" table
has columns that reference the delta for each revision and the base
delta that delta should be applied against. A recursive SQL query
is used to resolve the delta chain along with the delta data.
By storing deltas by hash, we are able to de-duplicate delta storage!
With revlogs, the same deltas in different revlogs would result in
duplicate storage of that delta. In this scheme, inserting the
duplicate delta is a no-op and delta chains simply reference the
existing delta.
When initially implementing this extension, I did not have
content-indexed deltas and deltas could be duplicated across files
(just like revlogs). When I implemented content-indexed deltas, the
size of the SQLite database for a full clone of mozilla-unified
dropped:
before: 2,554,261,504 bytes
after: 2,488,754,176 bytes
Surprisingly, this is still larger than the bytes size of revlog
files:
revlog files: 2,104,861,230 bytes
du -b: 2,254,381,614
I would have expected storage to be smaller since we're not limiting
delta chain length and since we're using zstd instead of zlib. I
suspect the SQLite indexes and per-column overhead account for the
bulk of the differences. (Keep in mind that revlog uses a 64-byte
packed struct for revision index data and deltas are stored without
padding. Aside from the 12 unused bytes in the 32 byte node field,
revlogs are pretty efficient.) Another source of overhead is file
name storage. With revlogs, file names are stored in the filesystem.
But with SQLite, we need to store file names in the database. This is
roughly equivalent to the size of the fncache file, which for the
mozilla-unified repository is ~34MB.
Since the SQLite database isn't append-only and since delta chains
can reference any delta, this opens some interesting possibilities.
For example, we could store deltas in reverse, such that fulltexts
are stored for newer revisions and deltas are applied to reconstruct
older revisions. This is likely a more optimal storage strategy for
version control, as new data tends to be more frequently accessed
than old data. We would obviously need wire protocol support for
transferring revision data from newest to oldest. And we would
probably need some kind of mechanism for "re-encoding" stores. But
it should be doable.
This extension is very much experimental quality. There are a handful
of features that don't work. It probably isn't suitable for day-to-day
use. But it could be used in limited cases (e.g. read-only checkouts
like in CI). And it is also a good proving ground for alternate
storage backends. As we continue to define interfaces for all things
storage, it will be useful to have a viable alternate storage backend
to see how things shake out in practice.
test-storage.py passes on Python 2 and introduces no new test failures on
Python 3. Having the storage-level unit tests has proved to be insanely
useful when developing this extension. Those tests caught numerous bugs
during development and I'm convinced this style of testing is the way
forward for ensuring alternate storage backends work as intended. Of
course, test coverage isn't close to what it needs to be. But it is
a start. And what coverage we have gives me confidence that basic store
functionality is implemented properly.
Differential Revision: https://phab.mercurial-scm.org/D4928
author | Gregory Szorc <gregory.szorc@gmail.com> |
---|---|
date | Tue, 09 Oct 2018 08:50:13 -0700 |
parents | 5abc47d4ca6b |
children | 57c462db87fd |
line wrap: on
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$ cat >> $HGRCPATH << EOF > [experimental] > hook-track-tags=1 > [hooks] > txnclose.track-tag=sh ${TESTTMP}/taghook.sh > EOF $ cat << EOF > taghook.sh > #!/bin/sh > # escape the "$" otherwise the test runner interpret it when writting the > # file... > if [ -n "\$HG_TAG_MOVED" ]; then > echo 'hook: tag changes detected' > sed 's/^/hook: /' .hg/changes/tags.changes > fi > EOF $ hg init test $ cd test $ echo a > a $ hg add a $ hg commit -m "test" $ hg history changeset: 0:acb14030fe0a tag: tip user: test date: Thu Jan 01 00:00:00 1970 +0000 summary: test $ hg tag ' ' abort: tag names cannot consist entirely of whitespace [255] (this tests also that editor is not invoked, if '--edit' is not specified) $ HGEDITOR=cat hg tag "bleah" hook: tag changes detected hook: +A acb14030fe0a21b60322c440ad2d20cf7685a376 bleah $ hg history changeset: 1:d4f0d2909abc tag: tip user: test date: Thu Jan 01 00:00:00 1970 +0000 summary: Added tag bleah for changeset acb14030fe0a changeset: 0:acb14030fe0a tag: bleah user: test date: Thu Jan 01 00:00:00 1970 +0000 summary: test $ echo foo >> .hgtags $ hg tag "bleah2" abort: working copy of .hgtags is changed (please commit .hgtags manually) [255] $ hg revert .hgtags $ hg tag -r 0 x y z y y z abort: tag names must be unique [255] $ hg tag tap nada dot tip abort: the name 'tip' is reserved [255] $ hg tag . abort: the name '.' is reserved [255] $ hg tag null abort: the name 'null' is reserved [255] $ hg tag "bleah" abort: tag 'bleah' already exists (use -f to force) [255] $ hg tag "blecch" "bleah" abort: tag 'bleah' already exists (use -f to force) [255] $ hg tag --remove "blecch" abort: tag 'blecch' does not exist [255] $ hg tag --remove "bleah" "blecch" "blough" abort: tag 'blecch' does not exist [255] $ hg tag -r 0 "bleah0" hook: tag changes detected hook: +A acb14030fe0a21b60322c440ad2d20cf7685a376 bleah0 $ hg tag -l -r 1 "bleah1" $ hg tag gack gawk gorp hook: tag changes detected hook: +A 336fccc858a4eb69609a291105009e484a6b6b8d gack hook: +A 336fccc858a4eb69609a291105009e484a6b6b8d gawk hook: +A 336fccc858a4eb69609a291105009e484a6b6b8d gorp $ hg tag -f gack hook: tag changes detected hook: -M 336fccc858a4eb69609a291105009e484a6b6b8d gack hook: +M 799667b6f2d9b957f73fa644a918c2df22bab58f gack $ hg tag --remove gack gorp hook: tag changes detected hook: -R 799667b6f2d9b957f73fa644a918c2df22bab58f gack hook: -R 336fccc858a4eb69609a291105009e484a6b6b8d gorp $ hg tag "bleah " abort: tag 'bleah' already exists (use -f to force) [255] $ hg tag " bleah" abort: tag 'bleah' already exists (use -f to force) [255] $ hg tag " bleah" abort: tag 'bleah' already exists (use -f to force) [255] $ hg tag -r 0 " bleahbleah " hook: tag changes detected hook: +A acb14030fe0a21b60322c440ad2d20cf7685a376 bleahbleah $ hg tag -r 0 " bleah bleah " hook: tag changes detected hook: +A acb14030fe0a21b60322c440ad2d20cf7685a376 bleah bleah $ cat .hgtags acb14030fe0a21b60322c440ad2d20cf7685a376 bleah acb14030fe0a21b60322c440ad2d20cf7685a376 bleah0 336fccc858a4eb69609a291105009e484a6b6b8d gack 336fccc858a4eb69609a291105009e484a6b6b8d gawk 336fccc858a4eb69609a291105009e484a6b6b8d gorp 336fccc858a4eb69609a291105009e484a6b6b8d gack 799667b6f2d9b957f73fa644a918c2df22bab58f gack 799667b6f2d9b957f73fa644a918c2df22bab58f gack 0000000000000000000000000000000000000000 gack 336fccc858a4eb69609a291105009e484a6b6b8d gorp 0000000000000000000000000000000000000000 gorp acb14030fe0a21b60322c440ad2d20cf7685a376 bleahbleah acb14030fe0a21b60322c440ad2d20cf7685a376 bleah bleah $ cat .hg/localtags d4f0d2909abc9290e2773c08837d70c1794e3f5a bleah1 tagging on a non-head revision $ hg update 0 0 files updated, 0 files merged, 1 files removed, 0 files unresolved $ hg tag -l localblah $ hg tag "foobar" abort: working directory is not at a branch head (use -f to force) [255] $ hg tag -f "foobar" hook: tag changes detected hook: +A acb14030fe0a21b60322c440ad2d20cf7685a376 foobar $ cat .hgtags acb14030fe0a21b60322c440ad2d20cf7685a376 foobar $ cat .hg/localtags d4f0d2909abc9290e2773c08837d70c1794e3f5a bleah1 acb14030fe0a21b60322c440ad2d20cf7685a376 localblah $ hg tag -l 'xx > newline' abort: '\n' cannot be used in a name [255] $ hg tag -l 'xx:xx' abort: ':' cannot be used in a name [255] cloning local tags $ cd .. $ hg -R test log -r0:5 changeset: 0:acb14030fe0a tag: bleah tag: bleah bleah tag: bleah0 tag: bleahbleah tag: foobar tag: localblah user: test date: Thu Jan 01 00:00:00 1970 +0000 summary: test changeset: 1:d4f0d2909abc tag: bleah1 user: test date: Thu Jan 01 00:00:00 1970 +0000 summary: Added tag bleah for changeset acb14030fe0a changeset: 2:336fccc858a4 tag: gawk user: test date: Thu Jan 01 00:00:00 1970 +0000 summary: Added tag bleah0 for changeset acb14030fe0a changeset: 3:799667b6f2d9 user: test date: Thu Jan 01 00:00:00 1970 +0000 summary: Added tag gack, gawk, gorp for changeset 336fccc858a4 changeset: 4:154eeb7c0138 user: test date: Thu Jan 01 00:00:00 1970 +0000 summary: Added tag gack for changeset 799667b6f2d9 changeset: 5:b4bb47aaff09 user: test date: Thu Jan 01 00:00:00 1970 +0000 summary: Removed tag gack, gorp $ hg clone -q -rbleah1 test test1 hook: tag changes detected hook: +A acb14030fe0a21b60322c440ad2d20cf7685a376 bleah $ hg -R test1 parents --style=compact 1[tip] d4f0d2909abc 1970-01-01 00:00 +0000 test Added tag bleah for changeset acb14030fe0a $ hg clone -q -r5 test#bleah1 test2 hook: tag changes detected hook: +A acb14030fe0a21b60322c440ad2d20cf7685a376 bleah hook: +A acb14030fe0a21b60322c440ad2d20cf7685a376 bleah0 hook: +A 336fccc858a4eb69609a291105009e484a6b6b8d gawk $ hg -R test2 parents --style=compact 5[tip] b4bb47aaff09 1970-01-01 00:00 +0000 test Removed tag gack, gorp $ hg clone -q -U test#bleah1 test3 hook: tag changes detected hook: +A acb14030fe0a21b60322c440ad2d20cf7685a376 bleah $ hg -R test3 parents --style=compact $ cd test Issue601: hg tag doesn't do the right thing if .hgtags or localtags doesn't end with EOL $ "$PYTHON" << EOF > f = open('.hg/localtags'); last = f.readlines()[-1][:-1]; f.close() > f = open('.hg/localtags', 'w'); f.write(last); f.close() > EOF $ cat .hg/localtags; echo acb14030fe0a21b60322c440ad2d20cf7685a376 localblah $ hg tag -l localnewline $ cat .hg/localtags; echo acb14030fe0a21b60322c440ad2d20cf7685a376 localblah c2899151f4e76890c602a2597a650a72666681bf localnewline $ "$PYTHON" << EOF > f = open('.hgtags'); last = f.readlines()[-1][:-1]; f.close() > f = open('.hgtags', 'w'); f.write(last); f.close() > EOF $ hg ci -m'broken manual edit of .hgtags' $ cat .hgtags; echo acb14030fe0a21b60322c440ad2d20cf7685a376 foobar $ hg tag newline hook: tag changes detected hook: +A a0eea09de1eeec777b46f2085260a373b2fbc293 newline $ cat .hgtags; echo acb14030fe0a21b60322c440ad2d20cf7685a376 foobar a0eea09de1eeec777b46f2085260a373b2fbc293 newline tag and branch using same name $ hg branch tag-and-branch-same-name marked working directory as branch tag-and-branch-same-name (branches are permanent and global, did you want a bookmark?) $ hg ci -m"discouraged" $ hg tag tag-and-branch-same-name warning: tag tag-and-branch-same-name conflicts with existing branch name hook: tag changes detected hook: +A fc93d2ea1cd78e91216c6cfbbf26747c10ce11ae tag-and-branch-same-name test custom commit messages $ cat > editor.sh << '__EOF__' > echo "==== before editing" > cat "$1" > echo "====" > echo "custom tag message" > "$1" > echo "second line" >> "$1" > __EOF__ at first, test saving last-message.txt (test that editor is not invoked before transaction starting) $ cat > .hg/hgrc << '__EOF__' > [hooks] > # this failure occurs before editor invocation > pretag.test-saving-lastmessage = false > __EOF__ $ rm -f .hg/last-message.txt $ HGEDITOR="\"sh\" \"`pwd`/editor.sh\"" hg tag custom-tag -e abort: pretag.test-saving-lastmessage hook exited with status 1 [255] $ test -f .hg/last-message.txt [1] (test that editor is invoked and commit message is saved into "last-message.txt") $ cat >> .hg/hgrc << '__EOF__' > [hooks] > pretag.test-saving-lastmessage = > # this failure occurs after editor invocation > pretxncommit.unexpectedabort = false > __EOF__ (this tests also that editor is invoked, if '--edit' is specified, regardless of '--message') $ rm -f .hg/last-message.txt $ HGEDITOR="\"sh\" \"`pwd`/editor.sh\"" hg tag custom-tag -e -m "foo bar" ==== before editing foo bar HG: Enter commit message. Lines beginning with 'HG:' are removed. HG: Leave message empty to abort commit. HG: -- HG: user: test HG: branch 'tag-and-branch-same-name' HG: changed .hgtags ==== note: commit message saved in .hg/last-message.txt transaction abort! rollback completed abort: pretxncommit.unexpectedabort hook exited with status 1 [255] $ cat .hg/last-message.txt custom tag message second line $ cat >> .hg/hgrc << '__EOF__' > [hooks] > pretxncommit.unexpectedabort = > __EOF__ $ hg status .hgtags M .hgtags $ hg revert --no-backup -q .hgtags then, test custom commit message itself $ HGEDITOR="\"sh\" \"`pwd`/editor.sh\"" hg tag custom-tag -e ==== before editing Added tag custom-tag for changeset 75a534207be6 HG: Enter commit message. Lines beginning with 'HG:' are removed. HG: Leave message empty to abort commit. HG: -- HG: user: test HG: branch 'tag-and-branch-same-name' HG: changed .hgtags ==== hook: tag changes detected hook: +A 75a534207be6b03576e0c7a4fa5708d045f1c876 custom-tag $ hg log -l1 --template "{desc}\n" custom tag message second line local tag with .hgtags modified $ hg tag hgtags-modified hook: tag changes detected hook: +A 0f26aaea6f74c3ed6c4aad8844403c9ba128d23a hgtags-modified $ hg rollback repository tip rolled back to revision 13 (undo commit) working directory now based on revision 13 $ hg st M .hgtags ? .hgtags.orig ? editor.sh $ hg tag --local baz $ hg revert --no-backup .hgtags tagging when at named-branch-head that's not a topo-head $ hg up default 1 files updated, 0 files merged, 0 files removed, 0 files unresolved $ hg merge -t internal:local 0 files updated, 1 files merged, 0 files removed, 0 files unresolved (branch merge, don't forget to commit) $ hg ci -m 'merge named branch' hook: tag changes detected hook: -R acb14030fe0a21b60322c440ad2d20cf7685a376 bleah hook: -R acb14030fe0a21b60322c440ad2d20cf7685a376 bleah bleah hook: -R acb14030fe0a21b60322c440ad2d20cf7685a376 bleah0 hook: -R acb14030fe0a21b60322c440ad2d20cf7685a376 bleahbleah hook: -R 336fccc858a4eb69609a291105009e484a6b6b8d gawk $ hg up 13 1 files updated, 0 files merged, 0 files removed, 0 files unresolved $ hg tag new-topo-head hook: tag changes detected hook: +A 0f26aaea6f74c3ed6c4aad8844403c9ba128d23a new-topo-head tagging on null rev $ hg up null 0 files updated, 0 files merged, 2 files removed, 0 files unresolved $ hg tag nullrev abort: working directory is not at a branch head (use -f to force) [255] $ hg init empty $ hg tag -R empty nullrev abort: cannot tag null revision [255] $ hg tag -R empty -r 00000000000 -f nulltag abort: cannot tag null revision [255] issue5539: pruned tags do not appear in .hgtags $ cat >> $HGRCPATH << EOF > [experimental] > evolution.exchange = True > evolution.createmarkers=True > EOF $ hg up e4d483960b9b --quiet $ echo aaa >>a $ hg ci -maaa $ hg log -r . -T "{node}\n" 743b3afd5aa69f130c246806e48ad2e699f490d2 $ hg tag issue5539 hook: tag changes detected hook: +A 743b3afd5aa69f130c246806e48ad2e699f490d2 issue5539 $ cat .hgtags acb14030fe0a21b60322c440ad2d20cf7685a376 foobar a0eea09de1eeec777b46f2085260a373b2fbc293 newline 743b3afd5aa69f130c246806e48ad2e699f490d2 issue5539 $ hg log -r . -T "{node}\n" abeb261f0508ecebcd345ce21e7a25112df417aa (mimic 'hg prune' command by obsoleting current changeset and then moving to its parent) $ hg debugobsolete abeb261f0508ecebcd345ce21e7a25112df417aa --record-parents obsoleted 1 changesets $ hg up ".^" --quiet $ cat .hgtags acb14030fe0a21b60322c440ad2d20cf7685a376 foobar a0eea09de1eeec777b46f2085260a373b2fbc293 newline $ echo bbb >>a $ hg ci -mbbb $ hg log -r . -T "{node}\n" 089dd20da58cae34165c37b064539c6ac0c6a0dd $ hg tag issue5539 hook: tag changes detected hook: -M 743b3afd5aa69f130c246806e48ad2e699f490d2 issue5539 hook: +M 089dd20da58cae34165c37b064539c6ac0c6a0dd issue5539 $ hg id 0accf560a709 tip $ cat .hgtags acb14030fe0a21b60322c440ad2d20cf7685a376 foobar a0eea09de1eeec777b46f2085260a373b2fbc293 newline 089dd20da58cae34165c37b064539c6ac0c6a0dd issue5539 $ hg tags tip 19:0accf560a709 issue5539 18:089dd20da58c new-topo-head 13:0f26aaea6f74 baz 13:0f26aaea6f74 custom-tag 12:75a534207be6 tag-and-branch-same-name 11:fc93d2ea1cd7 newline 9:a0eea09de1ee localnewline 8:c2899151f4e7 localblah 0:acb14030fe0a foobar 0:acb14030fe0a $ cd .. tagging on an uncommitted merge (issue2542) $ hg init repo-tag-uncommitted-merge $ cd repo-tag-uncommitted-merge $ echo c1 > f1 $ hg ci -Am0 adding f1 $ echo c2 > f2 $ hg ci -Am1 adding f2 $ hg co -q 0 $ hg branch b1 marked working directory as branch b1 (branches are permanent and global, did you want a bookmark?) $ hg ci -m2 $ hg up default 1 files updated, 0 files merged, 0 files removed, 0 files unresolved $ hg merge b1 0 files updated, 0 files merged, 0 files removed, 0 files unresolved (branch merge, don't forget to commit) $ hg tag t1 abort: uncommitted merge [255] $ hg status $ hg tag --rev 1 t2 abort: uncommitted merge [255] $ hg tag --rev 1 --local t3 $ hg tags -v tip 2:2a156e8887cc t3 1:c3adabd1a5f4 local $ cd .. commit hook on tag used to be run without write lock - issue3344 $ hg init repo-tag $ touch repo-tag/test $ hg -R repo-tag commit -A -m "test" adding test $ hg init repo-tag-target $ cat > "$TESTTMP/issue3344.sh" <<EOF > hg push "$TESTTMP/repo-tag-target" > EOF $ hg -R repo-tag --config hooks.commit="sh ../issue3344.sh" tag tag hook: tag changes detected hook: +A be090ea6625635128e90f7d89df8beeb2bcc1653 tag pushing to $TESTTMP/repo-tag-target searching for changes adding changesets adding manifests adding file changes added 2 changesets with 2 changes to 2 files hook: tag changes detected hook: +A be090ea6625635128e90f7d89df8beeb2bcc1653 tag automatically merge resolvable tag conflicts (i.e. tags that differ in rank) create two clones with some different tags as well as some common tags check that we can merge tags that differ in rank $ hg init repo-automatic-tag-merge $ cd repo-automatic-tag-merge $ echo c0 > f0 $ hg ci -A -m0 adding f0 $ hg tag tbase hook: tag changes detected hook: +A 6cee5c8f3e5b4ae1a3996d2f6489c3e08eb5aea7 tbase $ hg up -qr '.^' $ hg log -r 'wdir()' -T "{latesttagdistance}\n" 1 $ hg up -q $ hg log -r 'wdir()' -T "{latesttagdistance}\n" 2 $ cd .. $ hg clone repo-automatic-tag-merge repo-automatic-tag-merge-clone updating to branch default 2 files updated, 0 files merged, 0 files removed, 0 files unresolved $ cd repo-automatic-tag-merge-clone $ echo c1 > f1 $ hg ci -A -m1 adding f1 $ hg tag t1 t2 t3 hook: tag changes detected hook: +A 4f3e9b90005b68b4d8a3f4355cedc302a8364f5c t1 hook: +A 4f3e9b90005b68b4d8a3f4355cedc302a8364f5c t2 hook: +A 4f3e9b90005b68b4d8a3f4355cedc302a8364f5c t3 $ hg tag --remove t2 hook: tag changes detected hook: -R 4f3e9b90005b68b4d8a3f4355cedc302a8364f5c t2 $ hg tag t5 hook: tag changes detected hook: +A 875517b4806a848f942811a315a5bce30804ae85 t5 $ echo c2 > f2 $ hg ci -A -m2 adding f2 $ hg tag -f t3 hook: tag changes detected hook: -M 4f3e9b90005b68b4d8a3f4355cedc302a8364f5c t3 hook: +M 79505d5360b07e3e79d1052e347e73c02b8afa5b t3 $ cd ../repo-automatic-tag-merge $ echo c3 > f3 $ hg ci -A -m3 adding f3 $ hg tag -f t4 t5 t6 hook: tag changes detected hook: +A 9aa4e1292a27a248f8d07339bed9931d54907be7 t4 hook: +A 9aa4e1292a27a248f8d07339bed9931d54907be7 t5 hook: +A 9aa4e1292a27a248f8d07339bed9931d54907be7 t6 $ hg up -q '.^' $ hg log -r 'wdir()' -T "{changessincelatesttag} changes since {latesttag}\n" 1 changes since t4:t5:t6 $ hg log -r '.' -T "{changessincelatesttag} changes since {latesttag}\n" 0 changes since t4:t5:t6 $ echo c5 > f3 $ hg log -r 'wdir()' -T "{changessincelatesttag} changes since {latesttag}\n" 1 changes since t4:t5:t6 $ hg up -qC $ hg tag --remove t5 hook: tag changes detected hook: -R 9aa4e1292a27a248f8d07339bed9931d54907be7 t5 $ echo c4 > f4 $ hg log -r '.' -T "{changessincelatesttag} changes since {latesttag}\n" 2 changes since t4:t6 $ hg log -r '.' -T "{latesttag % '{latesttag}\n'}" t4 t6 $ hg log -r '.' -T "{latesttag('t4') % 'T: {tag}, C: {changes}, D: {distance}\n'}" T: t4, C: 2, D: 2 $ hg log -r '.' -T "{latesttag('re:\d') % 'T: {tag}, C: {changes}, D: {distance}\n'}" T: t4, C: 2, D: 2 T: t6, C: 2, D: 2 $ hg log -r . -T '{join(latesttag(), "*")}\n' t4*t6 $ hg ci -A -m4 adding f4 $ hg log -r 'wdir()' -T "{changessincelatesttag} changes since {latesttag}\n" 4 changes since t4:t6 $ hg tag t2 hook: tag changes detected hook: +A 929bca7b18d067cbf3844c3896319a940059d748 t2 $ hg tag -f t6 hook: tag changes detected hook: -M 9aa4e1292a27a248f8d07339bed9931d54907be7 t6 hook: +M 09af2ce14077a94effef208b49a718f4836d4338 t6 $ cd ../repo-automatic-tag-merge-clone $ hg pull pulling from $TESTTMP/repo-automatic-tag-merge searching for changes adding changesets adding manifests adding file changes added 6 changesets with 6 changes to 3 files (+1 heads) new changesets 9aa4e1292a27:b325cc5b642c hook: tag changes detected hook: +A 929bca7b18d067cbf3844c3896319a940059d748 t2 hook: +A 9aa4e1292a27a248f8d07339bed9931d54907be7 t4 hook: -R 875517b4806a848f942811a315a5bce30804ae85 t5 hook: +A 09af2ce14077a94effef208b49a718f4836d4338 t6 (run 'hg heads' to see heads, 'hg merge' to merge) $ hg merge --tool internal:tagmerge merging .hgtags 2 files updated, 1 files merged, 0 files removed, 0 files unresolved (branch merge, don't forget to commit) $ hg status M .hgtags M f3 M f4 $ hg resolve -l R .hgtags $ cat .hgtags 9aa4e1292a27a248f8d07339bed9931d54907be7 t4 9aa4e1292a27a248f8d07339bed9931d54907be7 t6 9aa4e1292a27a248f8d07339bed9931d54907be7 t6 09af2ce14077a94effef208b49a718f4836d4338 t6 6cee5c8f3e5b4ae1a3996d2f6489c3e08eb5aea7 tbase 4f3e9b90005b68b4d8a3f4355cedc302a8364f5c t1 929bca7b18d067cbf3844c3896319a940059d748 t2 4f3e9b90005b68b4d8a3f4355cedc302a8364f5c t2 4f3e9b90005b68b4d8a3f4355cedc302a8364f5c t3 4f3e9b90005b68b4d8a3f4355cedc302a8364f5c t2 0000000000000000000000000000000000000000 t2 875517b4806a848f942811a315a5bce30804ae85 t5 9aa4e1292a27a248f8d07339bed9931d54907be7 t5 9aa4e1292a27a248f8d07339bed9931d54907be7 t5 0000000000000000000000000000000000000000 t5 4f3e9b90005b68b4d8a3f4355cedc302a8364f5c t3 79505d5360b07e3e79d1052e347e73c02b8afa5b t3 check that the merge tried to minimize the diff with the first merge parent $ hg diff --git -r 'p1()' .hgtags diff --git a/.hgtags b/.hgtags --- a/.hgtags +++ b/.hgtags @@ -1,9 +1,17 @@ +9aa4e1292a27a248f8d07339bed9931d54907be7 t4 +9aa4e1292a27a248f8d07339bed9931d54907be7 t6 +9aa4e1292a27a248f8d07339bed9931d54907be7 t6 +09af2ce14077a94effef208b49a718f4836d4338 t6 6cee5c8f3e5b4ae1a3996d2f6489c3e08eb5aea7 tbase 4f3e9b90005b68b4d8a3f4355cedc302a8364f5c t1 +929bca7b18d067cbf3844c3896319a940059d748 t2 4f3e9b90005b68b4d8a3f4355cedc302a8364f5c t2 4f3e9b90005b68b4d8a3f4355cedc302a8364f5c t3 4f3e9b90005b68b4d8a3f4355cedc302a8364f5c t2 0000000000000000000000000000000000000000 t2 875517b4806a848f942811a315a5bce30804ae85 t5 +9aa4e1292a27a248f8d07339bed9931d54907be7 t5 +9aa4e1292a27a248f8d07339bed9931d54907be7 t5 +0000000000000000000000000000000000000000 t5 4f3e9b90005b68b4d8a3f4355cedc302a8364f5c t3 79505d5360b07e3e79d1052e347e73c02b8afa5b t3 detect merge tag conflicts $ hg update -C -r tip 3 files updated, 0 files merged, 2 files removed, 0 files unresolved $ hg tag t7 hook: tag changes detected hook: +A b325cc5b642c5b465bdbe8c09627cb372de3d47d t7 $ hg update -C -r 'first(sort(head()))' 3 files updated, 0 files merged, 2 files removed, 0 files unresolved $ printf "%s %s\n" `hg log -r . --template "{node} t7"` >> .hgtags $ hg commit -m "manually add conflicting t7 tag" hook: tag changes detected hook: -R 929bca7b18d067cbf3844c3896319a940059d748 t2 hook: +A 875517b4806a848f942811a315a5bce30804ae85 t5 hook: -M b325cc5b642c5b465bdbe8c09627cb372de3d47d t7 hook: +M ea918d56be86a4afc5a95312e8b6750e1428d9d2 t7 $ hg merge --tool internal:tagmerge merging .hgtags automatic .hgtags merge failed the following 1 tags are in conflict: t7 automatic tag merging of .hgtags failed! (use 'hg resolve --tool :merge' or another merge tool of your choice) 2 files updated, 0 files merged, 0 files removed, 1 files unresolved use 'hg resolve' to retry unresolved file merges or 'hg merge --abort' to abandon [1] $ hg resolve -l U .hgtags $ cat .hgtags 6cee5c8f3e5b4ae1a3996d2f6489c3e08eb5aea7 tbase 4f3e9b90005b68b4d8a3f4355cedc302a8364f5c t1 4f3e9b90005b68b4d8a3f4355cedc302a8364f5c t2 4f3e9b90005b68b4d8a3f4355cedc302a8364f5c t3 4f3e9b90005b68b4d8a3f4355cedc302a8364f5c t2 0000000000000000000000000000000000000000 t2 875517b4806a848f942811a315a5bce30804ae85 t5 4f3e9b90005b68b4d8a3f4355cedc302a8364f5c t3 79505d5360b07e3e79d1052e347e73c02b8afa5b t3 ea918d56be86a4afc5a95312e8b6750e1428d9d2 t7 $ cd .. handle the loss of tags $ hg clone repo-automatic-tag-merge-clone repo-merge-lost-tags updating to branch default 4 files updated, 0 files merged, 0 files removed, 0 files unresolved $ cd repo-merge-lost-tags $ echo c5 > f5 $ hg ci -A -m5 adding f5 $ hg tag -f t7 hook: tag changes detected hook: -M ea918d56be86a4afc5a95312e8b6750e1428d9d2 t7 hook: +M fd3a9e394ce3afb354a496323bf68ac1755a30de t7 $ hg update -r 'p1(t7)' 1 files updated, 0 files merged, 1 files removed, 0 files unresolved $ printf '' > .hgtags $ hg commit -m 'delete all tags' created new head $ hg log -r 'max(t7::)' changeset: 17:ffe462b50880 user: test date: Thu Jan 01 00:00:00 1970 +0000 summary: Added tag t7 for changeset fd3a9e394ce3 $ hg update -r 'max(t7::)' 2 files updated, 0 files merged, 0 files removed, 0 files unresolved $ hg merge -r tip --tool internal:tagmerge merging .hgtags 0 files updated, 1 files merged, 0 files removed, 0 files unresolved (branch merge, don't forget to commit) $ hg resolve -l R .hgtags $ cat .hgtags 6cee5c8f3e5b4ae1a3996d2f6489c3e08eb5aea7 tbase 0000000000000000000000000000000000000000 tbase 4f3e9b90005b68b4d8a3f4355cedc302a8364f5c t1 0000000000000000000000000000000000000000 t1 4f3e9b90005b68b4d8a3f4355cedc302a8364f5c t2 4f3e9b90005b68b4d8a3f4355cedc302a8364f5c t3 4f3e9b90005b68b4d8a3f4355cedc302a8364f5c t2 0000000000000000000000000000000000000000 t2 875517b4806a848f942811a315a5bce30804ae85 t5 0000000000000000000000000000000000000000 t5 4f3e9b90005b68b4d8a3f4355cedc302a8364f5c t3 79505d5360b07e3e79d1052e347e73c02b8afa5b t3 0000000000000000000000000000000000000000 t3 ea918d56be86a4afc5a95312e8b6750e1428d9d2 t7 0000000000000000000000000000000000000000 t7 ea918d56be86a4afc5a95312e8b6750e1428d9d2 t7 fd3a9e394ce3afb354a496323bf68ac1755a30de t7 also check that we minimize the diff with the 1st merge parent $ hg diff --git -r 'p1()' .hgtags diff --git a/.hgtags b/.hgtags --- a/.hgtags +++ b/.hgtags @@ -1,12 +1,17 @@ 6cee5c8f3e5b4ae1a3996d2f6489c3e08eb5aea7 tbase +0000000000000000000000000000000000000000 tbase 4f3e9b90005b68b4d8a3f4355cedc302a8364f5c t1 +0000000000000000000000000000000000000000 t1 4f3e9b90005b68b4d8a3f4355cedc302a8364f5c t2 4f3e9b90005b68b4d8a3f4355cedc302a8364f5c t3 4f3e9b90005b68b4d8a3f4355cedc302a8364f5c t2 0000000000000000000000000000000000000000 t2 875517b4806a848f942811a315a5bce30804ae85 t5 +0000000000000000000000000000000000000000 t5 4f3e9b90005b68b4d8a3f4355cedc302a8364f5c t3 79505d5360b07e3e79d1052e347e73c02b8afa5b t3 +0000000000000000000000000000000000000000 t3 ea918d56be86a4afc5a95312e8b6750e1428d9d2 t7 +0000000000000000000000000000000000000000 t7 ea918d56be86a4afc5a95312e8b6750e1428d9d2 t7 fd3a9e394ce3afb354a496323bf68ac1755a30de t7