upstream/mercurial-mirror Files · tests/test-revlog-packentry.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

Gregory Szorc - - Load All Authors

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        Pradeepkumar Gayam
    
tests: unify test-revlog-packentry

              r11919
            
        $ hg init repo

        $ cd repo

        $ touch foo

        $ hg ci -Am 'add foo'

        adding foo

        $ hg up -C null

        0 files updated, 0 files merged, 1 files removed, 0 files unresolved

      this should be stored as a delta against rev 0

        $ echo foo bar baz > foo

        $ hg ci -Am 'add foo again'

        adding foo

        created new head

        Sune Foldager
    
tests: fix deprecated use of hg debugdata/debugindex...

              r14182
            
        $ hg debugindex foo

        Gregory Szorc
    
debugcommands: drop offset and length from debugindex by default...

              r37301
            
           rev linkrev nodeid       p1           p2

             0       0 b80de5d13875 000000000000 000000000000

             1       1 0376abec49b8 000000000000 000000000000

        Mads Kiilerich
    
tests: add missing trailing 'cd ..'...

              r16913
            
        $ cd ..

	Site-wide shortcuts
/	Use quick search box
g h	Goto home page
g g	Goto my private gists page
g G	Goto my public gists page
g 0-9	Goto bookmarked items from 0-9
n r	New repository page
n g	New gist page

	Repositories
g s	Goto summary page
g c	Goto changelog page
g f	Goto files page
g F	Goto files page with file search activated
g p	Goto pull requests page
g o	Goto repository settings
g O	Goto repository access permissions settings
t s	Toggle sidebar on some pages

Pradeepkumar Gayam tests: unify test-revlog-packentry	r11919	$ hg init repo
		$ cd repo

		$ touch foo
		$ hg ci -Am 'add foo'
		adding foo

		$ hg up -C null
		0 files updated, 0 files merged, 1 files removed, 0 files unresolved

		this should be stored as a delta against rev 0

		$ echo foo bar baz > foo
		$ hg ci -Am 'add foo again'
		adding foo
		created new head

Sune Foldager tests: fix deprecated use of hg debugdata/debugindex...	r14182	$ hg debugindex foo
Gregory Szorc debugcommands: drop offset and length from debugindex by default...	r37301	rev linkrev nodeid p1 p2
		0 0 b80de5d13875 000000000000 000000000000
		1 1 0376abec49b8 000000000000 000000000000
Mads Kiilerich tests: add missing trailing 'cd ..'...	r16913
		$ cd ..