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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-revset-legacy-lookup.t
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$ cat >> $HGRCPATH << EOF
> [ui]
> logtemplate="{rev}:{node|short} {desc} [{tags}]\n"
> EOF
$ hg init legacy-lookup
$ cd legacy-lookup
$ echo a > a
$ hg add a
$ hg commit -m 'first'
$ echo aa > a
$ hg commit -m 'second'
$ hg log -G
@ 1:43114e71eddd second [tip]
|
o 0:a87874c6ec31 first []
Create a tag that looks like a revset
$ hg tag 'rev(0)'
$ hg log -G
@ 2:fb616635b18f Added tag rev(0) for changeset 43114e71eddd [tip]
|
o 1:43114e71eddd second [rev(0)]
|
o 0:a87874c6ec31 first []
See how various things are resolved
-----------------------------------
Revision numbers
$ hg log -r '0'
0:a87874c6ec31 first []
$ hg log -r '1'
1:43114e71eddd second [rev(0)]
"rev(x)" form (the one conflicting with the tags)
(resolved as a label)
$ hg log -r 'rev(0)'
1:43114e71eddd second [rev(0)]
$ hg log -r 'rev(1)'
1:43114e71eddd second [rev(0)]
same within a simple revspec
(still resolved as the label)
$ hg log -r ':rev(0)'
0:a87874c6ec31 first []
1:43114e71eddd second [rev(0)]
$ hg log -r 'rev(0):'
1:43114e71eddd second [rev(0)]
2:fb616635b18f Added tag rev(0) for changeset 43114e71eddd [tip]
within a more advances revset
(still resolved as the label)
$ hg log -r 'rev(0) and branch(default)'
0:a87874c6ec31 first []
with explicit revset resolution
(still resolved as the label)
$ hg log -r 'revset(rev(0))'
0:a87874c6ec31 first []
some of the above with quote to force its resolution as a label
$ hg log -r ':"rev(0)"'
0:a87874c6ec31 first []
1:43114e71eddd second [rev(0)]
$ hg log -r '"rev(0)":'
1:43114e71eddd second [rev(0)]
2:fb616635b18f Added tag rev(0) for changeset 43114e71eddd [tip]
$ hg log -r '"rev(0)" and branch(default)'
1:43114e71eddd second [rev(0)]
confusing bits within parents
$ hg log -r '(rev(0))'
0:a87874c6ec31 first []
$ hg log -r '( rev(0))'
0:a87874c6ec31 first []
$ hg log -r '("rev(0)")'
1:43114e71eddd second [rev(0)]
Test label with quote in them.
$ hg tag '"foo"'
$ hg log -r '"foo"'
2:fb616635b18f Added tag rev(0) for changeset 43114e71eddd ["foo"]
$ hg log -r '("foo")'
abort: unknown revision 'foo'!
[255]
$ hg log -r 'revset("foo")'
abort: unknown revision 'foo'!
[255]
$ hg log -r '("\"foo\"")'
2:fb616635b18f Added tag rev(0) for changeset 43114e71eddd ["foo"]
$ hg log -r 'revset("\"foo\"")'
2:fb616635b18f Added tag rev(0) for changeset 43114e71eddd ["foo"]
Test label with dash in them.
$ hg tag 'foo-bar'
$ hg log -r 'foo-bar'
3:a50aae922707 Added tag "foo" for changeset fb616635b18f [foo-bar]
$ hg log -r '(foo-bar)'
3:a50aae922707 Added tag "foo" for changeset fb616635b18f [foo-bar]
$ hg log -r '"foo-bar"'
3:a50aae922707 Added tag "foo" for changeset fb616635b18f [foo-bar]
$ hg log -r '("foo-bar")'
3:a50aae922707 Added tag "foo" for changeset fb616635b18f [foo-bar]
Test label with + in them.
$ hg tag 'foo+bar'
$ hg log -r 'foo+bar'
4:bbf52b87b370 Added tag foo-bar for changeset a50aae922707 [foo+bar]
$ hg log -r '(foo+bar)'
abort: unknown revision 'foo'!
[255]
$ hg log -r 'revset(foo+bar)'
abort: unknown revision 'foo'!
[255]
$ hg log -r '"foo+bar"'
4:bbf52b87b370 Added tag foo-bar for changeset a50aae922707 [foo+bar]
$ hg log -r '("foo+bar")'
4:bbf52b87b370 Added tag foo-bar for changeset a50aae922707 [foo+bar]
Test tag with numeric version number.
$ hg tag '1.2'
$ hg log -r '1.2'
5:ff42fde8edbb Added tag foo+bar for changeset bbf52b87b370 [1.2]
$ hg log -r '(1.2)'
5:ff42fde8edbb Added tag foo+bar for changeset bbf52b87b370 [1.2]
$ hg log -r 'revset(1.2)'
5:ff42fde8edbb Added tag foo+bar for changeset bbf52b87b370 [1.2]
$ hg log -r '"1.2"'
5:ff42fde8edbb Added tag foo+bar for changeset bbf52b87b370 [1.2]
$ hg log -r '("1.2")'
5:ff42fde8edbb Added tag foo+bar for changeset bbf52b87b370 [1.2]
$ hg log -r '::"1.2"'
0:a87874c6ec31 first []
1:43114e71eddd second [rev(0)]
2:fb616635b18f Added tag rev(0) for changeset 43114e71eddd ["foo"]
3:a50aae922707 Added tag "foo" for changeset fb616635b18f [foo-bar]
4:bbf52b87b370 Added tag foo-bar for changeset a50aae922707 [foo+bar]
5:ff42fde8edbb Added tag foo+bar for changeset bbf52b87b370 [1.2]
$ hg log -r '::1.2'
0:a87874c6ec31 first []
1:43114e71eddd second [rev(0)]
2:fb616635b18f Added tag rev(0) for changeset 43114e71eddd ["foo"]
3:a50aae922707 Added tag "foo" for changeset fb616635b18f [foo-bar]
4:bbf52b87b370 Added tag foo-bar for changeset a50aae922707 [foo+bar]
5:ff42fde8edbb Added tag foo+bar for changeset bbf52b87b370 [1.2]
Test tag with parenthesis (but not a valid revset)
$ hg tag 'release_4.1(candidate1)'
$ hg log -r 'release_4.1(candidate1)'
6:db72e24fe069 Added tag 1.2 for changeset ff42fde8edbb [release_4.1(candidate1)]
$ hg log -r '(release_4.1(candidate1))'
hg: parse error: unknown identifier: release_4.1
[255]
$ hg log -r 'revset(release_4.1(candidate1))'
hg: parse error: unknown identifier: release_4.1
[255]
$ hg log -r '"release_4.1(candidate1)"'
6:db72e24fe069 Added tag 1.2 for changeset ff42fde8edbb [release_4.1(candidate1)]
$ hg log -r '("release_4.1(candidate1)")'
6:db72e24fe069 Added tag 1.2 for changeset ff42fde8edbb [release_4.1(candidate1)]
$ hg log -r '::"release_4.1(candidate1)"'
0:a87874c6ec31 first []
1:43114e71eddd second [rev(0)]
2:fb616635b18f Added tag rev(0) for changeset 43114e71eddd ["foo"]
3:a50aae922707 Added tag "foo" for changeset fb616635b18f [foo-bar]
4:bbf52b87b370 Added tag foo-bar for changeset a50aae922707 [foo+bar]
5:ff42fde8edbb Added tag foo+bar for changeset bbf52b87b370 [1.2]
6:db72e24fe069 Added tag 1.2 for changeset ff42fde8edbb [release_4.1(candidate1)]
$ hg log -r '::release_4.1(candidate1)'
hg: parse error: unknown identifier: release_4.1
[255]
Test tag with parenthesis and other function like char
$ hg tag 'release_4.1(arch=x86,arm)'
$ hg log -r 'release_4.1(arch=x86,arm)'
7:b29b25d7d687 Added tag release_4.1(candidate1) for changeset db72e24fe069 [release_4.1(arch=x86,arm)]
$ hg log -r '(release_4.1(arch=x86,arm))'
hg: parse error: unknown identifier: release_4.1
[255]
$ hg log -r 'revset(release_4.1(arch=x86,arm))'
hg: parse error: unknown identifier: release_4.1
[255]
$ hg log -r '"release_4.1(arch=x86,arm)"'
7:b29b25d7d687 Added tag release_4.1(candidate1) for changeset db72e24fe069 [release_4.1(arch=x86,arm)]
$ hg log -r '("release_4.1(arch=x86,arm)")'
7:b29b25d7d687 Added tag release_4.1(candidate1) for changeset db72e24fe069 [release_4.1(arch=x86,arm)]
$ hg log -r '::"release_4.1(arch=x86,arm)"'
0:a87874c6ec31 first []
1:43114e71eddd second [rev(0)]
2:fb616635b18f Added tag rev(0) for changeset 43114e71eddd ["foo"]
3:a50aae922707 Added tag "foo" for changeset fb616635b18f [foo-bar]
4:bbf52b87b370 Added tag foo-bar for changeset a50aae922707 [foo+bar]
5:ff42fde8edbb Added tag foo+bar for changeset bbf52b87b370 [1.2]
6:db72e24fe069 Added tag 1.2 for changeset ff42fde8edbb [release_4.1(candidate1)]
7:b29b25d7d687 Added tag release_4.1(candidate1) for changeset db72e24fe069 [release_4.1(arch=x86,arm)]
$ hg log -r '::release_4.1(arch=x86,arm)'
hg: parse error: unknown identifier: release_4.1
[255]
Test tag conflicting with revset function
$ hg tag 'secret(team=foo,project=bar)'
$ hg log -r 'secret(team=foo,project=bar)'
8:6b2e2d4ea455 Added tag release_4.1(arch=x86,arm) for changeset b29b25d7d687 [secret(team=foo,project=bar)]
$ hg log -r '(secret(team=foo,project=bar))'
hg: parse error: secret takes no arguments
[255]
$ hg log -r 'revset(secret(team=foo,project=bar))'
hg: parse error: secret takes no arguments
[255]
$ hg log -r '"secret(team=foo,project=bar)"'
8:6b2e2d4ea455 Added tag release_4.1(arch=x86,arm) for changeset b29b25d7d687 [secret(team=foo,project=bar)]
$ hg log -r '("secret(team=foo,project=bar)")'
8:6b2e2d4ea455 Added tag release_4.1(arch=x86,arm) for changeset b29b25d7d687 [secret(team=foo,project=bar)]
$ hg log -r '::"secret(team=foo,project=bar)"'
0:a87874c6ec31 first []
1:43114e71eddd second [rev(0)]
2:fb616635b18f Added tag rev(0) for changeset 43114e71eddd ["foo"]
3:a50aae922707 Added tag "foo" for changeset fb616635b18f [foo-bar]
4:bbf52b87b370 Added tag foo-bar for changeset a50aae922707 [foo+bar]
5:ff42fde8edbb Added tag foo+bar for changeset bbf52b87b370 [1.2]
6:db72e24fe069 Added tag 1.2 for changeset ff42fde8edbb [release_4.1(candidate1)]
7:b29b25d7d687 Added tag release_4.1(candidate1) for changeset db72e24fe069 [release_4.1(arch=x86,arm)]
8:6b2e2d4ea455 Added tag release_4.1(arch=x86,arm) for changeset b29b25d7d687 [secret(team=foo,project=bar)]
$ hg log -r '::secret(team=foo,project=bar)'
hg: parse error: secret takes no arguments
[255]
Test tag with space
$ hg tag 'my little version'
$ hg log -r 'my little version'
9:269192bf8fc3 Added tag secret(team=foo,project=bar) for changeset 6b2e2d4ea455 [my little version]
$ hg log -r '(my little version)'
hg: parse error at 4: unexpected token: symbol
((my little version)
^ here)
[255]
$ hg log -r 'revset(my little version)'
hg: parse error at 10: unexpected token: symbol
(revset(my little version)
^ here)
[255]
$ hg log -r '"my little version"'
9:269192bf8fc3 Added tag secret(team=foo,project=bar) for changeset 6b2e2d4ea455 [my little version]
$ hg log -r '("my little version")'
9:269192bf8fc3 Added tag secret(team=foo,project=bar) for changeset 6b2e2d4ea455 [my little version]
$ hg log -r '::"my little version"'
0:a87874c6ec31 first []
1:43114e71eddd second [rev(0)]
2:fb616635b18f Added tag rev(0) for changeset 43114e71eddd ["foo"]
3:a50aae922707 Added tag "foo" for changeset fb616635b18f [foo-bar]
4:bbf52b87b370 Added tag foo-bar for changeset a50aae922707 [foo+bar]
5:ff42fde8edbb Added tag foo+bar for changeset bbf52b87b370 [1.2]
6:db72e24fe069 Added tag 1.2 for changeset ff42fde8edbb [release_4.1(candidate1)]
7:b29b25d7d687 Added tag release_4.1(candidate1) for changeset db72e24fe069 [release_4.1(arch=x86,arm)]
8:6b2e2d4ea455 Added tag release_4.1(arch=x86,arm) for changeset b29b25d7d687 [secret(team=foo,project=bar)]
9:269192bf8fc3 Added tag secret(team=foo,project=bar) for changeset 6b2e2d4ea455 [my little version]
$ hg log -r '::my little version'
hg: parse error at 5: invalid token
(::my little version
^ here)
[255]