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contrib: add pull_logger extension...
contrib: add pull_logger extension This extension logs the pull parameters, i.e. the remote and common heads, when pulling from the local repository. The collected data should give an idea of the state of a pair of repositories and allow replaying past synchronisations between them. This is particularly useful for working on data exchange, bundling and caching-related optimisations.

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test-contrib-pull-logger.t
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/ tests / test-contrib-pull-logger.t
Check that the pull logger plugins logs pulls
=============================================
Enable the extension
$ echo "[extensions]" >> $HGRCPATH
$ echo "pull-logger = $TESTDIR/../contrib/pull_logger.py" >> $HGRCPATH
Check the format of the generated log entries, with a bunch of elements in the
common and heads set
$ hg init server
$ hg -R server debugbuilddag '.*2+2'
$ hg clone ssh://user@dummy/server client --rev 0
adding changesets
adding manifests
adding file changes
added 1 changesets with 0 changes to 0 files
new changesets 1ea73414a91b
updating to branch default
0 files updated, 0 files merged, 0 files removed, 0 files unresolved
$ tail -1 server/.hg/pull_log.jsonl
{"common": ["0000000000000000000000000000000000000000"], "heads": ["1ea73414a91b0920940797d8fc6a11e447f8ea1e"], "logger_version": 0, "timestamp": *} (glob)
$ hg -R client pull --rev 1 --rev 2
pulling from ssh://user@dummy/server
searching for changes
adding changesets
adding manifests
adding file changes
added 2 changesets with 0 changes to 0 files (+1 heads)
new changesets d8736c3a2c84:fa28e81e283b
(run 'hg heads' to see heads, 'hg merge' to merge)
$ tail -1 server/.hg/pull_log.jsonl
{"common": ["1ea73414a91b0920940797d8fc6a11e447f8ea1e"], "heads": ["d8736c3a2c84ee759a2821385804bcb67f266ade", "fa28e81e283b3416de4d48ee0dd2d446e9e38d7c"], "logger_version": 0, "timestamp": *} (glob)
$ hg -R client pull --rev 2 --rev 3
pulling from ssh://user@dummy/server
searching for changes
adding changesets
adding manifests
adding file changes
added 1 changesets with 0 changes to 0 files
new changesets 944641ddcaef
(run 'hg update' to get a working copy)
$ tail -1 server/.hg/pull_log.jsonl
{"common": ["1ea73414a91b0920940797d8fc6a11e447f8ea1e", "fa28e81e283b3416de4d48ee0dd2d446e9e38d7c"], "heads": ["944641ddcaef174df7ce1bc2751a5f165129778b", "fa28e81e283b3416de4d48ee0dd2d446e9e38d7c"], "logger_version": 0, "timestamp": *} (glob)
Check the number of entries generated in the log when pulling from multiple
clients at the same time
$ rm -f server/.hg/pull_log.jsonl
$ for i in $($TESTDIR/seq.py 32); do
> hg clone ssh://user@dummy/server client_$i --rev 0
> done > /dev/null
$ for i in $($TESTDIR/seq.py 32); do
> hg -R client_$i pull --rev 1 &
> done > /dev/null
$ wait
$ wc -l server/.hg/pull_log.jsonl
\s*64 .* (re)