Test stream cloning while a revlog split happens

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

#testcases stream-bundle2-v2 stream-bundle2-v3

#if stream-bundle2-v3

  $ cat << EOF >> $HGRCPATH

  > [experimental]

  > stream-v3 = yes

  > EOF

#endif

setup a repository for tests

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

  $ cat >> $HGRCPATH << EOF

  > [format]

  > # skip compression to make it easy to trigger a split

  > revlog-compression=none

  > [phases]

  > publish=no

  > EOF

  $ hg init server

  $ cd server

  $ file="some-file"

  $ printf '%20d' '1' > $file

  $ hg commit -Aqma

  $ printf '%1024d' '1' > $file

  $ hg commit -Aqmb

  $ printf '%20d' '1' > $file

  $ hg commit -Aqmc

check the revlog is inline

  $ f -s .hg/store/data/some-file*

  .hg/store/data/some-file.i: size=1259

  $ hg debug-revlog-index some-file

     rev linkrev       nodeid    p1-nodeid    p2-nodeid

       0       0 ed70cecbc103 000000000000 000000000000

       1       1 7241018db64c ed70cecbc103 000000000000

       2       2 fa1120531cc1 7241018db64c 000000000000

  $ cd ..

setup synchronisation file

  $ HG_TEST_STREAM_WALKED_FILE_1="$TESTTMP/sync_file_walked_1"

  $ export HG_TEST_STREAM_WALKED_FILE_1

  $ HG_TEST_STREAM_WALKED_FILE_2="$TESTTMP/sync_file_walked_2"

  $ export HG_TEST_STREAM_WALKED_FILE_2

  $ HG_TEST_STREAM_WALKED_FILE_3="$TESTTMP/sync_file_walked_3"

  $ export HG_TEST_STREAM_WALKED_FILE_3

Test stream-clone raced by a revlog-split

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

Test stream-clone where the file is split right after the lock section is done

Start the server

  $ hg serve -R server \

  >   -p $HGPORT1 -d --error errors.log --pid-file=hg.pid \

  >   --config extensions.stream_steps="$RUNTESTDIR/testlib/ext-stream-clone-steps.py"

  $ cat hg.pid >> $DAEMON_PIDS

Start a client doing a streaming clone

  $ ( \

  >    hg clone --debug --stream -U http://localhost:$HGPORT1 \

  >    clone-while-split > client.log 2>&1; \

  >    touch "$HG_TEST_STREAM_WALKED_FILE_3" \

  > ) &

Wait for the server to be done collecting data

  $ $RUNTESTDIR/testlib/wait-on-file 10 $HG_TEST_STREAM_WALKED_FILE_1

trigger a split

  $ dd if=/dev/zero of=server/$file bs=1k count=128 > /dev/null 2>&1

  $ hg -R server ci -m "triggering a split" --config ui.timeout.warn=-1

unlock the stream generation

  $ touch $HG_TEST_STREAM_WALKED_FILE_2

wait for the client to be done cloning.

  $ $RUNTESTDIR/testlib/wait-on-file 10 $HG_TEST_STREAM_WALKED_FILE_3

Check everything is fine

  $ cat client.log

  using http://localhost:$HGPORT1/

  sending capabilities command

  query 1; heads

  sending batch command

  streaming all changes

  sending getbundle command

  bundle2-input-bundle: with-transaction

  bundle2-input-part: "stream2" (params: 3 mandatory) supported (stream-bundle2-v2 !)

  applying stream bundle

  adding [s] phaseroots (43 bytes)

  adding [s] 00manifest.i (348 bytes)

  adding [s] 00changelog.i (381 bytes)

  adding [c] branch2-served (94 bytes)

  adding [c] rbc-names-v1 (7 bytes)

  adding [c] rbc-revs-v1 (24 bytes)

  updating the branch cache

  transferred 2.11 KB in * seconds (* */sec) (glob)

  bundle2-input-part: "listkeys" (params: 1 mandatory) supported

  bundle2-input-bundle: 2 parts total

  checking for updated bookmarks

  updating the branch cache

  (sent 3 HTTP requests and * bytes; received * bytes in responses) (glob)

  $ tail -2 errors.log

  $ hg -R clone-while-split verify

  checking changesets

  checking manifests

  crosschecking files in changesets and manifests

  checking files

  checking dirstate

  checked 3 changesets with 3 changes to 1 files

  $ hg -R clone-while-split tip

  changeset:   2:dbd9854c38a6

  tag:         tip

  user:        test

  date:        Thu Jan 01 00:00:00 1970 +0000

  summary:     c

  $ hg -R clone-while-split debug-revlog-index some-file

     rev linkrev       nodeid    p1-nodeid    p2-nodeid

       0       0 ed70cecbc103 000000000000 000000000000

       1       1 7241018db64c ed70cecbc103 000000000000

       2       2 fa1120531cc1 7241018db64c 000000000000

  $ hg -R server phase --rev 'all()'

  0: draft

  1: draft

  2: draft

  3: draft

  $ hg -R clone-while-split phase --rev 'all()'

  0: draft

  1: draft

  2: draft

subsequent pull work

  $ hg -R clone-while-split pull

  pulling from http://localhost:$HGPORT1/

  searching for changes

  adding changesets

  adding manifests

  adding file changes

  added 1 changesets with 1 changes to 1 files

  new changesets df05c6cb1406 (1 drafts)

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

  $ hg -R clone-while-split debug-revlog-index some-file

     rev linkrev       nodeid    p1-nodeid    p2-nodeid

       0       0 ed70cecbc103 000000000000 000000000000

       1       1 7241018db64c ed70cecbc103 000000000000

       2       2 fa1120531cc1 7241018db64c 000000000000

       3       3 a631378adaa3 fa1120531cc1 000000000000

  $ hg -R clone-while-split verify

  checking changesets

  checking manifests

  crosschecking files in changesets and manifests

  checking files

  checking dirstate

  checked 4 changesets with 4 changes to 1 files