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view tests/test-rebase-scenario-global.t @ 40021:c537144fdbef
wireprotov2: support response caching
One of the things I've learned from managing VCS servers over the
years is that they are hard to scale. It is well known that some
companies have very beefy (read: very expensive) servers to power
their VCS needs. It is also known that specialized servers for
various VCS exist in order to facilitate scaling servers. (Mercurial
is in this boat.)
One of the aspects that make a VCS server hard to scale is the
high CPU load incurred by constant client clone/pull operations.
To alleviate the scaling pain associated with data retrieval
operations, I want to integrate caching into the Mercurial wire
protocol server as robustly as possible such that servers can
aggressively cache responses and defer as much server load as
possible.
This commit represents the initial implementation of a general
caching layer in wire protocol version 2.
We define a new interface and behavior for a wire protocol cacher
in repository.py. (This is probably where a reviewer should look
first to understand what is going on.)
The bulk of the added code is in wireprotov2server.py, where we
define how a command can opt in to being cached and integrate
caching into command dispatching.
From a very high-level:
* A command can declare itself as cacheable by providing a callable
that can be used to derive a cache key.
* At dispatch time, if a command is cacheable, we attempt to
construct a cacher and use it for serving the request and/or
caching the request.
* The dispatch layer handles the bulk of the business logic for
caching, making cachers mostly "dumb content stores."
* The mechanism for invalidating cached entries (one of the harder
parts about caching in general) is by varying the cache key when
state changes. As such, cachers don't need to be concerned with
cache invalidation.
Initially, we've hooked up support for caching "manifestdata" and
"filedata" commands. These are the simplest to cache, as they should
be immutable over time. Caching of commands related to changeset
data is a bit harder (because cache validation is impacted by
changes to bookmarks, phases, etc). This will be implemented later.
(Strictly speaking, censoring a file should invalidate caches. I've
added an inline TODO to track this edge case.)
To prove it works, this commit implements a test-only extension
providing in-memory caching backed by an lrucachedict. A new test
showing this extension behaving properly is added. FWIW, the
cacher is ~50 lines of code, demonstrating the relative ease with
which a cache can be added to a server.
While the test cacher is not suitable for production workloads, just
for kicks I performed a clone of just the changeset and manifest data
for the mozilla-unified repository. With a fully warmed cache (of just
the manifest data since changeset data is not cached), server-side
CPU usage dropped from ~73s to ~28s. That's pretty significant and
demonstrates the potential that response caching has on server
scalability!
Differential Revision: https://phab.mercurial-scm.org/D4773
author | Gregory Szorc <gregory.szorc@gmail.com> |
---|---|
date | Wed, 26 Sep 2018 17:16:56 -0700 |
parents | 89630d0b3e23 |
children | 09680349cc2d |
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$ cat >> $HGRCPATH <<EOF > [extensions] > rebase= > drawdag=$TESTDIR/drawdag.py > > [phases] > publish=False > > [alias] > tglog = log -G --template "{rev}: {node|short} '{desc}' {branches}\n" > EOF $ hg init a $ cd a $ hg unbundle "$TESTDIR/bundles/rebase.hg" adding changesets adding manifests adding file changes added 8 changesets with 7 changes to 7 files (+2 heads) new changesets cd010b8cd998:02de42196ebe (8 drafts) (run 'hg heads' to see heads, 'hg merge' to merge) $ hg up tip 3 files updated, 0 files merged, 0 files removed, 0 files unresolved $ cd .. Rebasing D onto H - simple rebase: (this also tests that editor is invoked if '--edit' is specified, and that we can abort or warn for colliding untracked files) $ hg clone -q -u . a a1 $ cd a1 $ hg tglog @ 7: 02de42196ebe 'H' | | o 6: eea13746799a 'G' |/| o | 5: 24b6387c8c8c 'F' | | | o 4: 9520eea781bc 'E' |/ | o 3: 32af7686d403 'D' | | | o 2: 5fddd98957c8 'C' | | | o 1: 42ccdea3bb16 'B' |/ o 0: cd010b8cd998 'A' $ hg status --rev "3^1" --rev 3 A D $ echo collide > D $ HGEDITOR=cat hg rebase -s 3 -d 7 --edit --config merge.checkunknown=warn rebasing 3:32af7686d403 "D" D: replacing untracked file D HG: Enter commit message. Lines beginning with 'HG:' are removed. HG: Leave message empty to abort commit. HG: -- HG: user: Nicolas Dumazet <nicdumz.commits@gmail.com> HG: branch 'default' HG: added D saved backup bundle to $TESTTMP/a1/.hg/strip-backup/32af7686d403-6f7dface-rebase.hg $ cat D.orig collide $ rm D.orig $ hg tglog o 7: 1619f02ff7dd 'D' | @ 6: 02de42196ebe 'H' | | o 5: eea13746799a 'G' |/| o | 4: 24b6387c8c8c 'F' | | | o 3: 9520eea781bc 'E' |/ | o 2: 5fddd98957c8 'C' | | | o 1: 42ccdea3bb16 'B' |/ o 0: cd010b8cd998 'A' $ cd .. D onto F - intermediate point: (this also tests that editor is not invoked if '--edit' is not specified, and that we can ignore for colliding untracked files) $ hg clone -q -u . a a2 $ cd a2 $ echo collide > D $ HGEDITOR=cat hg rebase -s 3 -d 5 --config merge.checkunknown=ignore rebasing 3:32af7686d403 "D" saved backup bundle to $TESTTMP/a2/.hg/strip-backup/32af7686d403-6f7dface-rebase.hg $ cat D.orig collide $ rm D.orig $ hg tglog o 7: 2107530e74ab 'D' | | @ 6: 02de42196ebe 'H' |/ | o 5: eea13746799a 'G' |/| o | 4: 24b6387c8c8c 'F' | | | o 3: 9520eea781bc 'E' |/ | o 2: 5fddd98957c8 'C' | | | o 1: 42ccdea3bb16 'B' |/ o 0: cd010b8cd998 'A' $ cd .. E onto H - skip of G: (this also tests that we can overwrite untracked files and don't create backups if they have the same contents) $ hg clone -q -u . a a3 $ cd a3 $ hg cat -r 4 E | tee E E $ hg rebase -s 4 -d 7 rebasing 4:9520eea781bc "E" rebasing 6:eea13746799a "G" note: rebase of 6:eea13746799a created no changes to commit saved backup bundle to $TESTTMP/a3/.hg/strip-backup/9520eea781bc-fcd8edd4-rebase.hg $ f E.orig E.orig: file not found $ hg tglog o 6: 9f8b8ec77260 'E' | @ 5: 02de42196ebe 'H' | o 4: 24b6387c8c8c 'F' | | o 3: 32af7686d403 'D' | | | o 2: 5fddd98957c8 'C' | | | o 1: 42ccdea3bb16 'B' |/ o 0: cd010b8cd998 'A' $ cd .. F onto E - rebase of a branching point (skip G): $ hg clone -q -u . a a4 $ cd a4 $ hg rebase -s 5 -d 4 rebasing 5:24b6387c8c8c "F" rebasing 6:eea13746799a "G" note: rebase of 6:eea13746799a created no changes to commit rebasing 7:02de42196ebe "H" (tip) saved backup bundle to $TESTTMP/a4/.hg/strip-backup/24b6387c8c8c-c3fe765d-rebase.hg $ hg tglog @ 6: e9240aeaa6ad 'H' | o 5: 5d0ccadb6e3e 'F' | o 4: 9520eea781bc 'E' | | o 3: 32af7686d403 'D' | | | o 2: 5fddd98957c8 'C' | | | o 1: 42ccdea3bb16 'B' |/ o 0: cd010b8cd998 'A' $ cd .. G onto H - merged revision having a parent in ancestors of target: $ hg clone -q -u . a a5 $ cd a5 $ hg rebase -s 6 -d 7 rebasing 6:eea13746799a "G" saved backup bundle to $TESTTMP/a5/.hg/strip-backup/eea13746799a-883828ed-rebase.hg $ hg tglog o 7: 397834907a90 'G' |\ | @ 6: 02de42196ebe 'H' | | | o 5: 24b6387c8c8c 'F' | | o | 4: 9520eea781bc 'E' |/ | o 3: 32af7686d403 'D' | | | o 2: 5fddd98957c8 'C' | | | o 1: 42ccdea3bb16 'B' |/ o 0: cd010b8cd998 'A' $ cd .. F onto B - G maintains E as parent: $ hg clone -q -u . a a6 $ cd a6 $ hg rebase -s 5 -d 1 rebasing 5:24b6387c8c8c "F" rebasing 6:eea13746799a "G" rebasing 7:02de42196ebe "H" (tip) saved backup bundle to $TESTTMP/a6/.hg/strip-backup/24b6387c8c8c-c3fe765d-rebase.hg $ hg tglog @ 7: c87be72f9641 'H' | | o 6: 17badd73d4f1 'G' |/| o | 5: 74fb9ed646c4 'F' | | | o 4: 9520eea781bc 'E' | | | | o 3: 32af7686d403 'D' | | | +---o 2: 5fddd98957c8 'C' | | o | 1: 42ccdea3bb16 'B' |/ o 0: cd010b8cd998 'A' $ cd .. These will fail (using --source): G onto F - rebase onto an ancestor: $ hg clone -q -u . a a7 $ cd a7 $ hg rebase -s 6 -d 5 nothing to rebase [1] F onto G - rebase onto a descendant: $ hg rebase -s 5 -d 6 abort: source and destination form a cycle [255] G onto B - merge revision with both parents not in ancestors of target: $ hg rebase -s 6 -d 1 rebasing 6:eea13746799a "G" abort: cannot rebase 6:eea13746799a without moving at least one of its parents [255] $ hg rebase --abort rebase aborted These will abort gracefully (using --base): G onto G - rebase onto same changeset: $ hg rebase -b 6 -d 6 nothing to rebase - eea13746799a is both "base" and destination [1] G onto F - rebase onto an ancestor: $ hg rebase -b 6 -d 5 nothing to rebase [1] F onto G - rebase onto a descendant: $ hg rebase -b 5 -d 6 nothing to rebase - "base" 24b6387c8c8c is already an ancestor of destination eea13746799a [1] C onto A - rebase onto an ancestor: $ hg rebase -d 0 -s 2 rebasing 2:5fddd98957c8 "C" rebasing 3:32af7686d403 "D" saved backup bundle to $TESTTMP/a7/.hg/strip-backup/5fddd98957c8-f9244fa1-rebase.hg $ hg tglog o 7: c9659aac0000 'D' | o 6: e1c4361dd923 'C' | | @ 5: 02de42196ebe 'H' | | | | o 4: eea13746799a 'G' | |/| | o | 3: 24b6387c8c8c 'F' |/ / | o 2: 9520eea781bc 'E' |/ | o 1: 42ccdea3bb16 'B' |/ o 0: cd010b8cd998 'A' Check rebasing public changeset $ hg pull --config phases.publish=True -q -r 6 . # update phase of 6 $ hg rebase -d 0 -b 6 nothing to rebase [1] $ hg rebase -d 5 -b 6 abort: can't rebase public changeset e1c4361dd923 (see 'hg help phases' for details) [255] $ hg rebase -d 5 -r '1 + (6::)' abort: can't rebase public changeset e1c4361dd923 (see 'hg help phases' for details) [255] $ hg rebase -d 5 -b 6 --keep rebasing 6:e1c4361dd923 "C" rebasing 7:c9659aac0000 "D" (tip) Check rebasing mutable changeset Source phase greater or equal to destination phase: new changeset get the phase of source: $ hg id -n 5 $ hg rebase -s9 -d0 rebasing 9:2b23e52411f4 "D" (tip) saved backup bundle to $TESTTMP/a7/.hg/strip-backup/2b23e52411f4-f942decf-rebase.hg $ hg id -n # check we updated back to parent 5 $ hg log --template "{phase}\n" -r 9 draft $ hg rebase -s9 -d1 rebasing 9:2cb10d0cfc6c "D" (tip) saved backup bundle to $TESTTMP/a7/.hg/strip-backup/2cb10d0cfc6c-ddb0f256-rebase.hg $ hg log --template "{phase}\n" -r 9 draft $ hg phase --force --secret 9 $ hg rebase -s9 -d0 rebasing 9:c5b12b67163a "D" (tip) saved backup bundle to $TESTTMP/a7/.hg/strip-backup/c5b12b67163a-4e372053-rebase.hg $ hg log --template "{phase}\n" -r 9 secret $ hg rebase -s9 -d1 rebasing 9:2a0524f868ac "D" (tip) saved backup bundle to $TESTTMP/a7/.hg/strip-backup/2a0524f868ac-cefd8574-rebase.hg $ hg log --template "{phase}\n" -r 9 secret Source phase lower than destination phase: new changeset get the phase of destination: $ hg rebase -s8 -d9 rebasing 8:6d4f22462821 "C" saved backup bundle to $TESTTMP/a7/.hg/strip-backup/6d4f22462821-3441f70b-rebase.hg $ hg log --template "{phase}\n" -r 'rev(9)' secret $ cd .. Check that temporary bundle doesn't lose phase when not using generaldelta $ hg --config format.usegeneraldelta=no init issue5678 $ cd issue5678 $ grep generaldelta .hg/requires [1] $ echo a > a $ hg ci -Aqm a $ echo b > b $ hg ci -Aqm b $ hg co -q '.^' $ echo c > c $ hg ci -Aqm c $ hg phase --public $ hg log -G -T '{rev}:{node|shortest} {phase} {desc}\n' @ 2:d36c public c | | o 1:d2ae draft b |/ o 0:cb9a public a $ hg rebase -s 1 -d 2 rebasing 1:d2ae7f538514 "b" saved backup bundle to $TESTTMP/issue5678/.hg/strip-backup/d2ae7f538514-2953539b-rebase.hg $ hg log -G -T '{rev}:{node|shortest} {phase} {desc}\n' o 2:c882 draft b | @ 1:d36c public c | o 0:cb9a public a $ cd .. Test for revset We need a bit different graph All destination are B $ hg init ah $ cd ah $ hg unbundle "$TESTDIR/bundles/rebase-revset.hg" adding changesets adding manifests adding file changes added 9 changesets with 9 changes to 9 files (+2 heads) new changesets 9ae2ed22e576:479ddb54a924 (9 drafts) (run 'hg heads' to see heads, 'hg merge' to merge) $ hg tglog o 8: 479ddb54a924 'I' | o 7: 72434a4e60b0 'H' | o 6: 3d8a618087a7 'G' | | o 5: 41bfcc75ed73 'F' | | | o 4: c01897464e7f 'E' |/ o 3: ffd453c31098 'D' | o 2: c9e50f6cdc55 'C' | | o 1: 8fd0f7e49f53 'B' |/ o 0: 9ae2ed22e576 'A' $ cd .. Simple case with keep: Source on have two descendant heads but ask for one $ hg clone -q -u . ah ah1 $ cd ah1 $ hg rebase -r '2::8' -d 1 abort: can't remove original changesets with unrebased descendants (use --keep to keep original changesets) [255] $ hg rebase -r '2::8' -d 1 -k rebasing 2:c9e50f6cdc55 "C" rebasing 3:ffd453c31098 "D" rebasing 6:3d8a618087a7 "G" rebasing 7:72434a4e60b0 "H" rebasing 8:479ddb54a924 "I" (tip) $ hg tglog o 13: 9bf1d9358a90 'I' | o 12: 274623a778d4 'H' | o 11: ab8c8617c8e8 'G' | o 10: c8cbf59f70da 'D' | o 9: 563e4faab485 'C' | | o 8: 479ddb54a924 'I' | | | o 7: 72434a4e60b0 'H' | | | o 6: 3d8a618087a7 'G' | | | | o 5: 41bfcc75ed73 'F' | | | | | o 4: c01897464e7f 'E' | |/ | o 3: ffd453c31098 'D' | | | o 2: c9e50f6cdc55 'C' | | o | 1: 8fd0f7e49f53 'B' |/ o 0: 9ae2ed22e576 'A' $ cd .. Base on have one descendant heads we ask for but common ancestor have two $ hg clone -q -u . ah ah2 $ cd ah2 $ hg rebase -r '3::8' -d 1 abort: can't remove original changesets with unrebased descendants (use --keep to keep original changesets) [255] $ hg rebase -r '3::8' -d 1 --keep rebasing 3:ffd453c31098 "D" rebasing 6:3d8a618087a7 "G" rebasing 7:72434a4e60b0 "H" rebasing 8:479ddb54a924 "I" (tip) $ hg tglog o 12: 9d7da0053b1c 'I' | o 11: 8fbd00952cbc 'H' | o 10: 51d434a615ee 'G' | o 9: a9c125634b0b 'D' | | o 8: 479ddb54a924 'I' | | | o 7: 72434a4e60b0 'H' | | | o 6: 3d8a618087a7 'G' | | | | o 5: 41bfcc75ed73 'F' | | | | | o 4: c01897464e7f 'E' | |/ | o 3: ffd453c31098 'D' | | | o 2: c9e50f6cdc55 'C' | | o | 1: 8fd0f7e49f53 'B' |/ o 0: 9ae2ed22e576 'A' $ cd .. rebase subset $ hg clone -q -u . ah ah3 $ cd ah3 $ hg rebase -r '3::7' -d 1 abort: can't remove original changesets with unrebased descendants (use --keep to keep original changesets) [255] $ hg rebase -r '3::7' -d 1 --keep rebasing 3:ffd453c31098 "D" rebasing 6:3d8a618087a7 "G" rebasing 7:72434a4e60b0 "H" $ hg tglog o 11: 8fbd00952cbc 'H' | o 10: 51d434a615ee 'G' | o 9: a9c125634b0b 'D' | | o 8: 479ddb54a924 'I' | | | o 7: 72434a4e60b0 'H' | | | o 6: 3d8a618087a7 'G' | | | | o 5: 41bfcc75ed73 'F' | | | | | o 4: c01897464e7f 'E' | |/ | o 3: ffd453c31098 'D' | | | o 2: c9e50f6cdc55 'C' | | o | 1: 8fd0f7e49f53 'B' |/ o 0: 9ae2ed22e576 'A' $ cd .. rebase subset with multiple head $ hg clone -q -u . ah ah4 $ cd ah4 $ hg rebase -r '3::(7+5)' -d 1 abort: can't remove original changesets with unrebased descendants (use --keep to keep original changesets) [255] $ hg rebase -r '3::(7+5)' -d 1 --keep rebasing 3:ffd453c31098 "D" rebasing 4:c01897464e7f "E" rebasing 5:41bfcc75ed73 "F" rebasing 6:3d8a618087a7 "G" rebasing 7:72434a4e60b0 "H" $ hg tglog o 13: 8fbd00952cbc 'H' | o 12: 51d434a615ee 'G' | | o 11: df23d8bda0b7 'F' | | | o 10: 47b7889448ff 'E' |/ o 9: a9c125634b0b 'D' | | o 8: 479ddb54a924 'I' | | | o 7: 72434a4e60b0 'H' | | | o 6: 3d8a618087a7 'G' | | | | o 5: 41bfcc75ed73 'F' | | | | | o 4: c01897464e7f 'E' | |/ | o 3: ffd453c31098 'D' | | | o 2: c9e50f6cdc55 'C' | | o | 1: 8fd0f7e49f53 'B' |/ o 0: 9ae2ed22e576 'A' $ cd .. More advanced tests rebase on ancestor with revset $ hg clone -q -u . ah ah5 $ cd ah5 $ hg rebase -r '6::' -d 2 rebasing 6:3d8a618087a7 "G" rebasing 7:72434a4e60b0 "H" rebasing 8:479ddb54a924 "I" (tip) saved backup bundle to $TESTTMP/ah5/.hg/strip-backup/3d8a618087a7-b4f73f31-rebase.hg $ hg tglog o 8: fcb52e68a694 'I' | o 7: 77bd65cd7600 'H' | o 6: 12d0e738fb18 'G' | | o 5: 41bfcc75ed73 'F' | | | o 4: c01897464e7f 'E' | | | o 3: ffd453c31098 'D' |/ o 2: c9e50f6cdc55 'C' | | o 1: 8fd0f7e49f53 'B' |/ o 0: 9ae2ed22e576 'A' $ cd .. rebase with multiple root. We rebase E and G on B We would expect heads are I, F if it was supported $ hg clone -q -u . ah ah6 $ cd ah6 $ hg rebase -r '(4+6)::' -d 1 rebasing 4:c01897464e7f "E" rebasing 5:41bfcc75ed73 "F" rebasing 6:3d8a618087a7 "G" rebasing 7:72434a4e60b0 "H" rebasing 8:479ddb54a924 "I" (tip) saved backup bundle to $TESTTMP/ah6/.hg/strip-backup/3d8a618087a7-aae93a24-rebase.hg $ hg tglog o 8: 9136df9a87cf 'I' | o 7: 23e8f30da832 'H' | o 6: b0efe8534e8b 'G' | | o 5: 6eb5b496ab79 'F' | | | o 4: d15eade9b0b1 'E' |/ | o 3: ffd453c31098 'D' | | | o 2: c9e50f6cdc55 'C' | | o | 1: 8fd0f7e49f53 'B' |/ o 0: 9ae2ed22e576 'A' $ cd .. More complex rebase with multiple roots each root have a different common ancestor with the destination and this is a detach (setup) $ hg clone -q -u . a a8 $ cd a8 $ echo I > I $ hg add I $ hg commit -m I $ hg up 4 1 files updated, 0 files merged, 3 files removed, 0 files unresolved $ echo I > J $ hg add J $ hg commit -m J created new head $ echo I > K $ hg add K $ hg commit -m K $ hg tglog @ 10: 23a4ace37988 'K' | o 9: 1301922eeb0c 'J' | | o 8: e7ec4e813ba6 'I' | | | o 7: 02de42196ebe 'H' | | +---o 6: eea13746799a 'G' | |/ | o 5: 24b6387c8c8c 'F' | | o | 4: 9520eea781bc 'E' |/ | o 3: 32af7686d403 'D' | | | o 2: 5fddd98957c8 'C' | | | o 1: 42ccdea3bb16 'B' |/ o 0: cd010b8cd998 'A' (actual test) $ hg rebase --dest 'desc(G)' --rev 'desc(K) + desc(I)' rebasing 8:e7ec4e813ba6 "I" rebasing 10:23a4ace37988 "K" (tip) saved backup bundle to $TESTTMP/a8/.hg/strip-backup/23a4ace37988-b06984b3-rebase.hg $ hg log --rev 'children(desc(G))' changeset: 9:adb617877056 parent: 6:eea13746799a user: test date: Thu Jan 01 00:00:00 1970 +0000 summary: I changeset: 10:882431a34a0e tag: tip parent: 6:eea13746799a user: test date: Thu Jan 01 00:00:00 1970 +0000 summary: K $ hg tglog @ 10: 882431a34a0e 'K' | | o 9: adb617877056 'I' |/ | o 8: 1301922eeb0c 'J' | | | | o 7: 02de42196ebe 'H' | | | o---+ 6: eea13746799a 'G' |/ / | o 5: 24b6387c8c8c 'F' | | o | 4: 9520eea781bc 'E' |/ | o 3: 32af7686d403 'D' | | | o 2: 5fddd98957c8 'C' | | | o 1: 42ccdea3bb16 'B' |/ o 0: cd010b8cd998 'A' Test that rebase is not confused by $CWD disappearing during rebase (issue4121) $ cd .. $ hg init cwd-vanish $ cd cwd-vanish $ touch initial-file $ hg add initial-file $ hg commit -m 'initial commit' $ touch dest-file $ hg add dest-file $ hg commit -m 'dest commit' $ hg up 0 0 files updated, 0 files merged, 1 files removed, 0 files unresolved $ touch other-file $ hg add other-file $ hg commit -m 'first source commit' created new head $ mkdir subdir $ cd subdir $ touch subfile $ hg add subfile $ hg commit -m 'second source with subdir' $ hg rebase -b . -d 1 --traceback rebasing 2:779a07b1b7a0 "first source commit" current directory was removed (rmcwd !) (consider changing to repo root: $TESTTMP/cwd-vanish) (rmcwd !) rebasing 3:a7d6f3a00bf3 "second source with subdir" (tip) saved backup bundle to $TESTTMP/cwd-vanish/.hg/strip-backup/779a07b1b7a0-853e0073-rebase.hg Get back to the root of cwd-vanish. Note that even though `cd ..` works on most systems, it does not work on FreeBSD 10, so we use an absolute path to get back to the repository. $ cd $TESTTMP Test that rebase is done in topo order (issue5370) $ hg init order $ cd order $ touch a && hg add a && hg ci -m A $ touch b && hg add b && hg ci -m B $ touch c && hg add c && hg ci -m C $ hg up 1 0 files updated, 0 files merged, 1 files removed, 0 files unresolved $ touch d && hg add d && hg ci -m D created new head $ hg up 2 1 files updated, 0 files merged, 1 files removed, 0 files unresolved $ touch e && hg add e && hg ci -m E $ hg up 3 1 files updated, 0 files merged, 2 files removed, 0 files unresolved $ touch f && hg add f && hg ci -m F $ hg up 0 0 files updated, 0 files merged, 3 files removed, 0 files unresolved $ touch g && hg add g && hg ci -m G created new head $ hg tglog @ 6: 124bb27b6f28 'G' | | o 5: 412b391de760 'F' | | | | o 4: 82ae8dc7a9b7 'E' | | | | o | 3: ab709c9f7171 'D' | | | | | o 2: d84f5cfaaf14 'C' | |/ | o 1: 76035bbd54bd 'B' |/ o 0: 216878401574 'A' $ hg rebase -s 1 -d 6 rebasing 1:76035bbd54bd "B" rebasing 2:d84f5cfaaf14 "C" rebasing 4:82ae8dc7a9b7 "E" rebasing 3:ab709c9f7171 "D" rebasing 5:412b391de760 "F" saved backup bundle to $TESTTMP/order/.hg/strip-backup/76035bbd54bd-e341bc99-rebase.hg $ hg tglog o 6: 31884cfb735e 'F' | o 5: 6d89fa5b0909 'D' | | o 4: de64d97c697b 'E' | | | o 3: b18e4d2d0aa1 'C' |/ o 2: 0983daf9ff6a 'B' | @ 1: 124bb27b6f28 'G' | o 0: 216878401574 'A' Test experimental revset ======================== $ cd ../cwd-vanish Make the repo a bit more interesting $ hg up 1 0 files updated, 0 files merged, 2 files removed, 0 files unresolved $ echo aaa > aaa $ hg add aaa $ hg commit -m aaa created new head $ hg log -G @ changeset: 4:5f7bc9025ed2 | tag: tip | parent: 1:58d79cc1cf43 | user: test | date: Thu Jan 01 00:00:00 1970 +0000 | summary: aaa | | o changeset: 3:1910d5ff34ea | | user: test | | date: Thu Jan 01 00:00:00 1970 +0000 | | summary: second source with subdir | | | o changeset: 2:82901330b6ef |/ user: test | date: Thu Jan 01 00:00:00 1970 +0000 | summary: first source commit | o changeset: 1:58d79cc1cf43 | user: test | date: Thu Jan 01 00:00:00 1970 +0000 | summary: dest commit | o changeset: 0:e94b687f7da3 user: test date: Thu Jan 01 00:00:00 1970 +0000 summary: initial commit Testing from lower head $ hg up 3 2 files updated, 0 files merged, 1 files removed, 0 files unresolved $ hg log -r '_destrebase()' changeset: 4:5f7bc9025ed2 tag: tip parent: 1:58d79cc1cf43 user: test date: Thu Jan 01 00:00:00 1970 +0000 summary: aaa Testing from upper head $ hg log -r '_destrebase(4)' changeset: 3:1910d5ff34ea user: test date: Thu Jan 01 00:00:00 1970 +0000 summary: second source with subdir $ hg up 4 1 files updated, 0 files merged, 2 files removed, 0 files unresolved $ hg log -r '_destrebase()' changeset: 3:1910d5ff34ea user: test date: Thu Jan 01 00:00:00 1970 +0000 summary: second source with subdir Testing rebase being called inside another transaction $ cd $TESTTMP $ hg init tr-state $ cd tr-state $ cat > $TESTTMP/wraprebase.py <<EOF > from __future__ import absolute_import > from mercurial import extensions > def _rebase(orig, ui, repo, *args, **kwargs): > with repo.wlock(): > with repo.lock(): > with repo.transaction(b'wrappedrebase'): > return orig(ui, repo, *args, **kwargs) > def wraprebase(loaded): > assert loaded > rebasemod = extensions.find(b'rebase') > extensions.wrapcommand(rebasemod.cmdtable, b'rebase', _rebase) > def extsetup(ui): > extensions.afterloaded(b'rebase', wraprebase) > EOF $ cat >> .hg/hgrc <<EOF > [extensions] > wraprebase=$TESTTMP/wraprebase.py > [experimental] > evolution=true > EOF $ hg debugdrawdag <<'EOS' > B C > |/ > A > EOS $ hg rebase -s C -d B rebasing 2:dc0947a82db8 "C" (C tip) $ [ -f .hg/rebasestate ] && echo 'WRONG: rebasestate should not exist' [1]