upstream/mercurial-mirror Files · tests/test-push-checkheads-unpushed-D2.t

httppeer: implement command executor for version 2 peer...

httppeer: implement command executor for version 2 peer Now that we have a new API for issuing commands which is compatible with wire protocol version 2, we can start using it with wire protocol version 2. This commit replaces our hacky implementation of _call() with something a bit more robust based on the new command executor interface. We now have proper support for issuing multiple commands per HTTP request. Each HTTP request maintains its own client reactor. The implementation is similar to the one in the legacy wire protocol. We use a ThreadPoolExecutor for spinning up a thread to read the HTTP response in the background. This allows responses to resolve in any order. While not implemented on the server yet, a client could use concurrent.futures.as_completed() with a collection of futures and handle responses as they arrive from the server. The return value from issued commands is still a simple list of raw or decoded CBOR data. This is still super hacky. We will want a rich data type for representing command responses. But at least this commit gets us one step closer to a proper peer implementation. Differential Revision: https://phab.mercurial-scm.org/D3297

Martin von Zweigbergk - - Load All Authors

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      ====================================

      Testing head checking code: Case D-2

      ====================================

      Mercurial checks for the introduction of new heads on push. Evolution comes

      into play to detect if existing branches on the server are being replaced by

      some of the new one we push.

      This case is part of a series of tests checking this behavior.

      Category D: remote head is "obs-affected" locally, but result is not part of the push

      TestCase 1: remote branch has 2 changes, head is pruned, other is rewritten but result is not pushed

      .. old-state:

      ..

      .. * 1 changeset branch

      ..

      .. new-state:

      ..

      .. * old head is pruned

      .. * 1 new branch succeeding to the other changeset in the old branch

      .. * 1 new unrelated branch

      ..

      .. expected-result:

      ..

      .. * push allowed

      .. * pushing only the unrelated branch: denied

      ..

      .. graph-summary:

      ..

      ..   B ⊗

      ..     |

      ..   A ø⇠○ A'

      ..     |/

      ..     | ◔ C

      ..     |/

      ..     ●

        $ . $TESTDIR/testlib/push-checkheads-util.sh

      Test setup

      ----------

        $ mkdir D2

        $ cd D2

        $ setuprepos

        creating basic server and client repo

        updating to branch default

        2 files updated, 0 files merged, 0 files removed, 0 files unresolved

        $ cd server

        $ mkcommit B0

        $ cd ../client

        $ hg pull

        pulling from $TESTTMP/D2/server

        searching for changes

        adding changesets

        adding manifests

        adding file changes

        added 1 changesets with 1 changes to 1 files

        new changesets d73caddc5533

        (run 'hg update' to get a working copy)

        $ hg up 0

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

        $ mkcommit A1

        created new head

        $ hg debugobsolete `getid "desc(A0)" ` `getid "desc(A1)"`

        obsoleted 1 changesets

        1 new orphan changesets

        $ hg debugobsolete --record-parents `getid "desc(B0)"`

        obsoleted 1 changesets

        $ hg up 0

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

        $ mkcommit C0

        created new head

        $ hg log -G --hidden

        @  0f88766e02d6 (draft): C0

        |

        | o  f6082bc4ffef (draft): A1

        |/

        | x  d73caddc5533 (draft): B0

        | |

        | x  8aaa48160adc (draft): A0

        |/

        o  1e4be0697311 (public): root

      Actual testing

      --------------

        $ hg push --rev 'desc(C0)'

        pushing to $TESTTMP/D2/server

        searching for changes

        abort: push creates new remote head 0f88766e02d6!

        (merge or see 'hg help push' for details about pushing new heads)

        [255]

        $ cd ../..

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				====================================
				Testing head checking code: Case D-2
				====================================

				Mercurial checks for the introduction of new heads on push. Evolution comes
				into play to detect if existing branches on the server are being replaced by
				some of the new one we push.

				This case is part of a series of tests checking this behavior.

				Category D: remote head is "obs-affected" locally, but result is not part of the push
				TestCase 1: remote branch has 2 changes, head is pruned, other is rewritten but result is not pushed

				.. old-state:
				..
				.. * 1 changeset branch
				..
				.. new-state:
				..
				.. * old head is pruned
				.. * 1 new branch succeeding to the other changeset in the old branch
				.. * 1 new unrelated branch
				..
				.. expected-result:
				..
				.. * push allowed
				.. * pushing only the unrelated branch: denied
				..
				.. graph-summary:
				..
				.. B ⊗
				.. \|
				.. A ø⇠○ A'
				.. \|/
				.. \| ◔ C
				.. \|/
				.. ●

				$ . $TESTDIR/testlib/push-checkheads-util.sh

				Test setup
				----------

				$ mkdir D2
				$ cd D2
				$ setuprepos
				creating basic server and client repo
				updating to branch default
				2 files updated, 0 files merged, 0 files removed, 0 files unresolved
				$ cd server
				$ mkcommit B0
				$ cd ../client
				$ hg pull
				pulling from $TESTTMP/D2/server
				searching for changes
				adding changesets
				adding manifests
				adding file changes
				added 1 changesets with 1 changes to 1 files
				new changesets d73caddc5533
				(run 'hg update' to get a working copy)
				$ hg up 0
				0 files updated, 0 files merged, 1 files removed, 0 files unresolved
				$ mkcommit A1
				created new head
				$ hg debugobsolete `getid "desc(A0)" ` `getid "desc(A1)"`
				obsoleted 1 changesets
				1 new orphan changesets
				$ hg debugobsolete --record-parents `getid "desc(B0)"`
				obsoleted 1 changesets
				$ hg up 0
				0 files updated, 0 files merged, 1 files removed, 0 files unresolved
				$ mkcommit C0
				created new head
				$ hg log -G --hidden
				@ 0f88766e02d6 (draft): C0
				\|
				\| o f6082bc4ffef (draft): A1
				\|/
				\| x d73caddc5533 (draft): B0
				\| \|
				\| x 8aaa48160adc (draft): A0
				\|/
				o 1e4be0697311 (public): root


				Actual testing
				--------------

				$ hg push --rev 'desc(C0)'
				pushing to $TESTTMP/D2/server
				searching for changes
				abort: push creates new remote head 0f88766e02d6!
				(merge or see 'hg help push' for details about pushing new heads)
				[255]

				$ cd ../..