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wireprotov2: define and implement "manifestdata" command...
wireprotov2: define and implement "manifestdata" command The added command can be used for obtaining manifest data. Given a manifest path and set of manifest nodes, data about manifests can be retrieved. Unlike changeset data, we wish to emit deltas to describe manifest revisions. So the command uses the relatively new API for building delta requests and emitting them. The code calls into deltaparent(), which I'm not very keen of. There's still work to be done in delta generation land so implementation details of storage (e.g. exactly one delta is stored/available) don't creep into higher levels. But we can worry about this later (there is already a TODO on imanifestorage tracking this). On the subject of parent deltas, the server assumes parent revisions exist on the receiving end. This is obviously wrong for shallow clone. I've added TODOs to add a mechanism to the command to allow clients to specify desired behavior. This shouldn't be too difficult to implement. Another big change is that the client must explicitly request manifest nodes to retrieve. This is a major departure from "getbundle," where the server derives relevant manifests as it iterates changesets and sends them automatically. As implemented, the client must transmit each requested node to the server. At 20 bytes per node, we're looking at 2 MB per 100,000 nodes. Plus wire encoding overhead. This isn't ideal for clients with limited upload bandwidth. I plan to address this in the future by allowing alternate mechanisms for defining the revisions to retrieve. One idea is to define a range of changeset revisions whose manifest revisions to retrieve (similar to how "changesetdata" works). We almost certainly want an API to look up an individual manifest by node. And that's where I've chosen to start with the implementation. Again, a theme of this early exchangev2 work is I want to start by building primitives for accessing raw repository data first and see how far we can get with those before we need more complexity. Differential Revision: https://phab.mercurial-scm.org/D4488
Boris Feld - - Load All Authors

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test-obsmarkers-effectflag.t
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Test the 'effect-flags' feature
Global setup
============
$ . $TESTDIR/testlib/obsmarker-common.sh
$ cat >> $HGRCPATH <<EOF
> [ui]
> interactive = true
> [phases]
> publish=False
> [extensions]
> rebase =
> [experimental]
> evolution = all
> evolution.effect-flags = 1
> EOF
$ hg init $TESTTMP/effect-flags
$ cd $TESTTMP/effect-flags
$ mkcommit ROOT
amend touching the description only
-----------------------------------
$ mkcommit A0
$ hg commit --amend -m "A1"
check result
$ hg debugobsolete --rev .
471f378eab4c5e25f6c77f785b27c936efb22874 fdf9bde5129a28d4548fadd3f62b265cdd3b7a2e 0 (Thu Jan 01 00:00:00 1970 +0000) {'ef1': '1', 'operation': 'amend', 'user': 'test'}
amend touching the user only
----------------------------
$ mkcommit B0
$ hg commit --amend -u "bob <bob@bob.com>"
check result
$ hg debugobsolete --rev .
ef4a313b1e0ade55718395d80e6b88c5ccd875eb 5485c92d34330dac9d7a63dc07e1e3373835b964 0 (Thu Jan 01 00:00:00 1970 +0000) {'ef1': '16', 'operation': 'amend', 'user': 'test'}
amend touching the date only
----------------------------
$ mkcommit B1
$ hg commit --amend -d "42 0"
check result
$ hg debugobsolete --rev .
2ef0680ff45038ac28c9f1ff3644341f54487280 4dd84345082e9e5291c2e6b3f335bbf8bf389378 0 (Thu Jan 01 00:00:00 1970 +0000) {'ef1': '32', 'operation': 'amend', 'user': 'test'}
amend touching the branch only
----------------------------
$ mkcommit B2
$ hg branch my-branch
marked working directory as branch my-branch
(branches are permanent and global, did you want a bookmark?)
$ hg commit --amend
check result
$ hg debugobsolete --rev .
bd3db8264ceebf1966319f5df3be7aac6acd1a8e 14a01456e0574f0e0a0b15b2345486a6364a8d79 0 (Thu Jan 01 00:00:00 1970 +0000) {'ef1': '64', 'operation': 'amend', 'user': 'test'}
$ hg up default
0 files updated, 0 files merged, 1 files removed, 0 files unresolved
rebase (parents change)
-----------------------
$ mkcommit C0
$ mkcommit D0
$ hg rebase -r . -d 'desc(B0)'
rebasing 10:c85eff83a034 "D0" (tip)
check result
$ hg debugobsolete --rev .
c85eff83a0340efd9da52b806a94c350222f3371 da86aa2f19a30d6686b15cae15c7b6c908ec9699 0 (Thu Jan 01 00:00:00 1970 +0000) {'ef1': '4', 'operation': 'rebase', 'user': 'test'}
amend touching the diff
-----------------------
$ mkcommit E0
$ echo 42 >> E0
$ hg commit --amend
check result
$ hg debugobsolete --rev .
ebfe0333e0d96f68a917afd97c0a0af87f1c3b5f 75781fdbdbf58a987516b00c980bccda1e9ae588 0 (Thu Jan 01 00:00:00 1970 +0000) {'ef1': '8', 'operation': 'amend', 'user': 'test'}
amend with multiple effect (desc and meta)
-------------------------------------------
$ mkcommit F0
$ hg branch my-other-branch
marked working directory as branch my-other-branch
$ hg commit --amend -m F1 -u "bob <bob@bob.com>" -d "42 0"
check result
$ hg debugobsolete --rev .
fad47e5bd78e6aa4db1b5a0a1751bc12563655ff a94e0fd5f1c81d969381a76eb0d37ce499a44fae 0 (Thu Jan 01 00:00:00 1970 +0000) {'ef1': '113', 'operation': 'amend', 'user': 'test'}
rebase not touching the diff
----------------------------
$ cat << EOF > H0
> 0
> 1
> 2
> 3
> 4
> 5
> 6
> 7
> 8
> 9
> 10
> EOF
$ hg add H0
$ hg commit -m 'H0'
$ echo "H1" >> H0
$ hg commit -m "H1"
$ hg up -r "desc(H0)"
1 files updated, 0 files merged, 0 files removed, 0 files unresolved
$ cat << EOF > H0
> H2
> 0
> 1
> 2
> 3
> 4
> 5
> 6
> 7
> 8
> 9
> 10
> EOF
$ hg commit -m "H2"
created new head
$ hg rebase -s "desc(H1)" -d "desc(H2)" -t :merge3
rebasing 17:b57fed8d8322 "H1"
merging H0
$ hg debugobsolete -r tip
b57fed8d83228a8ae3748d8c3760a77638dd4f8c e509e2eb3df5d131ff7c02350bf2a9edd0c09478 0 (Thu Jan 01 00:00:00 1970 +0000) {'ef1': '4', 'operation': 'rebase', 'user': 'test'}
amend closing the branch should be detected as meta change
----------------------------------------------------------
$ hg branch closedbranch
marked working directory as branch closedbranch
$ mkcommit G0
$ mkcommit I0
$ hg commit --amend --close-branch
check result
$ hg debugobsolete -r .
2f599e54c1c6974299065cdf54e1ad640bfb7b5d 12c6238b5e371eea00fd2013b12edce3f070928b 0 (Thu Jan 01 00:00:00 1970 +0000) {'ef1': '2', 'operation': 'amend', 'user': 'test'}