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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

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test-manifest.t
95 lines | 1.5 KiB | text/troff | Tads3Lexer
Matt Mackall
tests: fix a bunch of pointless #s in unified tests
r12328 Source bundle was generated with the following script:
Adrian Buehlmann
tests: unify test-manifest*
r12253 # hg init
# echo a > a
# ln -s a l
# hg ci -Ama -d'0 0'
# mkdir b
# echo a > b/a
# chmod +x b/a
# hg ci -Amb -d'1 0'
$ hg init
Gregory Szorc
commands: document the layering violation in `manifest --all`...
r37455 $ hg unbundle "$TESTDIR/bundles/test-manifest.hg"
adding changesets
adding manifests
adding file changes
added 2 changesets with 3 changes to 3 files
Boris Feld
phase: report number of non-public changeset alongside the new range...
r39516 new changesets b73562a03cfe:5bdc995175ba (2 drafts)
Gregory Szorc
commands: document the layering violation in `manifest --all`...
r37455 (run 'hg update' to get a working copy)
Adrian Buehlmann
tests: unify test-manifest*
r12253
The next call is expected to return nothing:
$ hg manifest
$ hg co
3 files updated, 0 files merged, 0 files removed, 0 files unresolved
$ hg manifest
a
b/a
l
Matt Mackall
files: add new command unifying locate and manifest functionality
r22423 $ hg files -vr .
2 a
Matt Harbison
tests: remove (glob) annotations that were only for '\' matches...
r35394 2 x b/a
Matt Mackall
files: add new command unifying locate and manifest functionality
r22423 1 l l
$ hg files -r . -X b
a
l
Yuya Nishihara
files: automatically populate fields referenced from template
r38559 $ hg files -T '{path} {size} {flags}\n'
a 2
b/a 2 x
l 1 l
Yuya Nishihara
files: add support for log-like template keywords and functions...
r38560 $ hg files -T '{path} {node|shortest}\n' -r.
a 5bdc
b/a 5bdc
l 5bdc
Matt Mackall
files: add new command unifying locate and manifest functionality
r22423
Adrian Buehlmann
tests: unify test-manifest*
r12253 $ hg manifest -v
644 a
755 * b/a
644 @ l
Yuya Nishihara
manifest: add support for log-like template keywords and functions...
r38561 $ hg manifest -T '{path} {rev}\n'
a 1
b/a 1
l 1
Adrian Buehlmann
tests: unify test-manifest*
r12253
$ hg manifest --debug
b789fdd96dc2f3bd229c1dd8eedf0fc60e2b68e3 644 a
b789fdd96dc2f3bd229c1dd8eedf0fc60e2b68e3 755 * b/a
047b75c6d7a3ef6a2243bd0e99f94f6ea6683597 644 @ l
$ hg manifest -r 0
a
l
$ hg manifest -r 1
a
b/a
l
$ hg manifest -r tip
a
b/a
l
$ hg manifest tip
a
b/a
l
Adrian Buehlmann
add new option --all to manifest command...
r14399 $ hg manifest --all
Gregory Szorc
commands: don't violate storage abstractions in `manifest --all`...
r37456 a
b/a
l
Adrian Buehlmann
tests: unify test-manifest*
r12253
The next two calls are expected to abort:
$ hg manifest -r 2
abort: unknown revision '2'!
Matt Mackall
tests: add exit codes to unified tests
r12316 [255]
Adrian Buehlmann
tests: unify test-manifest*
r12253
$ hg manifest -r tip tip
abort: please specify just one revision
Matt Mackall
tests: add exit codes to unified tests
r12316 [255]