upstream/mercurial-mirror Files · tests/test-cat.t

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

Yuya Nishihara - - Load All Authors

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        $ hg init

        $ echo 0 > a

        $ echo 0 > b

        $ hg ci -A -m m

        adding a

        adding b

        $ hg rm a

        $ hg cat a

        0

        $ hg cat --decode a # more tests in test-encode

        0

        $ echo 1 > b

        $ hg ci -m m

        $ echo 2 > b

        $ hg cat -r 0 a

        0

        $ hg cat -r 0 b

        0

        $ hg cat -r 1 a

        a: no such file in rev 7040230c159c

        [1]

        $ hg cat -r 1 b

        1

      Test multiple files

        $ echo 3 > c

        $ hg ci -Am addmore c

        $ hg cat b c

        1

        3

        $ hg cat .

        1

        3

        $ hg cat . c

        1

        3

      Test fileset

        $ hg cat 'set:not(b) or a'

        3

        $ hg cat 'set:c or b'

        1

        3

        $ mkdir tmp

        $ hg cat --output tmp/HH_%H c

        $ hg cat --output tmp/RR_%R c

        $ hg cat --output tmp/h_%h c

        $ hg cat --output tmp/r_%r c

        $ hg cat --output tmp/%s_s c

        $ hg cat --output tmp/%d%%_d c

        $ hg cat --output tmp/%p_p c

        $ hg log -r . --template "{rev}: {node|short}\n"

        2: 45116003780e

        $ find tmp -type f | sort

        tmp/.%_d

        tmp/HH_45116003780e3678b333fb2c99fa7d559c8457e9

        tmp/RR_2

        tmp/c_p

        tmp/c_s

        tmp/h_45116003780e

        tmp/r_2

      Test template output

        $ hg --cwd tmp cat ../b ../c -T '== {path|relpath} ({path}) r{rev} ==\n{data}'

        == ../b (b) r2 ==

        1

        == ../c (c) r2 ==

        3

        $ hg cat b c -Tjson --output -

        [

         {

          "data": "1\n",

          "path": "b"

         },

         {

          "data": "3\n",

          "path": "c"

         }

        ]

        $ hg cat b c -Tjson --output 'tmp/%p.json'

        $ cat tmp/b.json

        [

         {

          "data": "1\n",

          "path": "b"

         }

        ]

        $ cat tmp/c.json

        [

         {

          "data": "3\n",

          "path": "c"

         }

        ]

      Test working directory

        $ echo b-wdir > b

        $ hg cat -r 'wdir()' b

        b-wdir

      Environment variables are not visible by default

        $ PATTERN='t4' hg log -r '.' -T "{ifcontains('PATTERN', envvars, 'yes', 'no')}\n"

        no

      Environment variable visibility can be explicit

        $ PATTERN='t4' hg log -r '.' -T "{envvars % '{key} -> {value}\n'}" \

        >                 --config "experimental.exportableenviron=PATTERN"

        PATTERN -> t4

      Test behavior of output when directory structure does not already exist

        $ mkdir foo

        $ echo a > foo/a

        $ hg add foo/a

        $ hg commit -qm "add foo/a"

        $ hg cat --output "output/%p" foo/a

        $ cat output/foo/a

        a

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	Repositories
g s	Goto summary page
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				$ hg init
				$ echo 0 > a
				$ echo 0 > b
				$ hg ci -A -m m
				adding a
				adding b
				$ hg rm a
				$ hg cat a
				0
				$ hg cat --decode a # more tests in test-encode
				0
				$ echo 1 > b
				$ hg ci -m m
				$ echo 2 > b
				$ hg cat -r 0 a
				0
				$ hg cat -r 0 b
				0
				$ hg cat -r 1 a
				a: no such file in rev 7040230c159c
				[1]
				$ hg cat -r 1 b
				1

				Test multiple files

				$ echo 3 > c
				$ hg ci -Am addmore c
				$ hg cat b c
				1
				3
				$ hg cat .
				1
				3
				$ hg cat . c
				1
				3

				Test fileset

				$ hg cat 'set:not(b) or a'
				3
				$ hg cat 'set:c or b'
				1
				3

				$ mkdir tmp
				$ hg cat --output tmp/HH_%H c
				$ hg cat --output tmp/RR_%R c
				$ hg cat --output tmp/h_%h c
				$ hg cat --output tmp/r_%r c
				$ hg cat --output tmp/%s_s c
				$ hg cat --output tmp/%d%%_d c
				$ hg cat --output tmp/%p_p c
				$ hg log -r . --template "{rev}: {node\|short}\n"
				2: 45116003780e
				$ find tmp -type f \| sort
				tmp/.%_d
				tmp/HH_45116003780e3678b333fb2c99fa7d559c8457e9
				tmp/RR_2
				tmp/c_p
				tmp/c_s
				tmp/h_45116003780e
				tmp/r_2

				Test template output

				$ hg --cwd tmp cat ../b ../c -T '== {path\|relpath} ({path}) r{rev} ==\n{data}'
				== ../b (b) r2 ==
				1
				== ../c (c) r2 ==
				3

				$ hg cat b c -Tjson --output -
				[
				{
				"data": "1\n",
				"path": "b"
				},
				{
				"data": "3\n",
				"path": "c"
				}
				]

				$ hg cat b c -Tjson --output 'tmp/%p.json'
				$ cat tmp/b.json
				[
				{
				"data": "1\n",
				"path": "b"
				}
				]
				$ cat tmp/c.json
				[
				{
				"data": "3\n",
				"path": "c"
				}
				]

				Test working directory

				$ echo b-wdir > b
				$ hg cat -r 'wdir()' b
				b-wdir

				Environment variables are not visible by default

				$ PATTERN='t4' hg log -r '.' -T "{ifcontains('PATTERN', envvars, 'yes', 'no')}\n"
				no

				Environment variable visibility can be explicit

				$ PATTERN='t4' hg log -r '.' -T "{envvars % '{key} -> {value}\n'}" \
				> --config "experimental.exportableenviron=PATTERN"
				PATTERN -> t4

				Test behavior of output when directory structure does not already exist

				$ mkdir foo
				$ echo a > foo/a
				$ hg add foo/a
				$ hg commit -qm "add foo/a"
				$ hg cat --output "output/%p" foo/a
				$ cat output/foo/a
				a