Mercurial > hg
view tests/test-blackbox.t @ 26755:bb0b955d050d
streamclone: support for producing and consuming stream clone bundles
Up to this point, stream clones only existed as a dynamically generated
data format produced and consumed during streaming clones. In order to
support this efficient cloning format with the clone bundles feature, we
need a more formal, on disk representation of the streaming clone data.
This patch introduces a new "bundle" type for streaming clones. Unlike
existing bundles, it does not contain changegroup data. It does,
however, share the same concepts like the 4 byte header which identifies
the type of data that follows and the 2 byte abbreviation for
compression types (of which only "UN" is currently supported).
The new bundle format is essentially the existing stream clone version 1
data format with some headers at the beginning.
Content negotiation at stream clone request time checked for repository
format/requirements compatibility before initiating a stream clone. We
can't do active content negotiation when using clone bundles. So, we put
this set of requirements inside the payload so consumers have a built-in
mechanism for checking compatibility before reading and applying lots of
data. Of course, we will also advertise this requirements set in clone
bundles. But that's for another patch.
We currently don't have a mechanism to produce and consume this new
bundle format. This will be implemented in upcoming patches.
It's worth noting that if a legacy client attempts to `hg unbundle` a
stream clone bundle (with the "HGS1" header), it will abort with:
"unknown bundle version S1," which seems appropriate.
author | Gregory Szorc <gregory.szorc@gmail.com> |
---|---|
date | Sat, 17 Oct 2015 11:14:52 -0700 |
parents | 949e8c626d19 |
children | 142891ab6e89 |
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setup $ cat >> $HGRCPATH <<EOF > [extensions] > blackbox= > mock=$TESTDIR/mockblackbox.py > mq= > EOF $ hg init blackboxtest $ cd blackboxtest command, exit codes, and duration $ echo a > a $ hg add a $ hg blackbox 1970/01/01 00:00:00 bob (*)> add a (glob) 1970/01/01 00:00:00 bob (*)> add a exited 0 after * seconds (glob) incoming change tracking create two heads to verify that we only see one change in the log later $ hg commit -ma $ hg up null 0 files updated, 0 files merged, 1 files removed, 0 files unresolved $ echo b > b $ hg commit -Amb adding b created new head clone, commit, pull $ hg clone . ../blackboxtest2 updating to branch default 1 files updated, 0 files merged, 0 files removed, 0 files unresolved $ echo c > c $ hg commit -Amc adding c $ cd ../blackboxtest2 $ hg pull pulling from $TESTTMP/blackboxtest (glob) searching for changes adding changesets adding manifests adding file changes added 1 changesets with 1 changes to 1 files (run 'hg update' to get a working copy) $ hg blackbox -l 5 1970/01/01 00:00:00 bob (*)> pull (glob) 1970/01/01 00:00:00 bob (*)> updated served branch cache in ?.???? seconds (glob) 1970/01/01 00:00:00 bob (*)> wrote served branch cache with 1 labels and 2 nodes (glob) 1970/01/01 00:00:00 bob (*)> 1 incoming changes - new heads: d02f48003e62 (glob) 1970/01/01 00:00:00 bob (*)> pull exited 0 after * seconds (glob) we must not cause a failure if we cannot write to the log $ hg rollback repository tip rolled back to revision 1 (undo pull) #if unix-permissions no-root $ chmod 000 .hg/blackbox.log $ hg --debug incoming warning: cannot write to blackbox.log: Permission denied comparing with $TESTTMP/blackboxtest (glob) query 1; heads searching for changes all local heads known remotely changeset: 2:d02f48003e62c24e2659d97d30f2a83abe5d5d51 tag: tip phase: draft parent: 1:6563da9dcf87b1949716e38ff3e3dfaa3198eb06 parent: -1:0000000000000000000000000000000000000000 manifest: 2:ab9d46b053ebf45b7996f2922b9893ff4b63d892 user: test date: Thu Jan 01 00:00:00 1970 +0000 files+: c extra: branch=default description: c #endif $ hg pull pulling from $TESTTMP/blackboxtest (glob) searching for changes adding changesets adding manifests adding file changes added 1 changesets with 1 changes to 1 files (run 'hg update' to get a working copy) a failure reading from the log is fine #if unix-permissions no-root $ hg blackbox -l 3 abort: Permission denied: $TESTTMP/blackboxtest2/.hg/blackbox.log [255] $ chmod 600 .hg/blackbox.log #endif backup bundles get logged $ touch d $ hg commit -Amd adding d created new head $ hg strip tip 0 files updated, 0 files merged, 1 files removed, 0 files unresolved saved backup bundle to $TESTTMP/blackboxtest2/.hg/strip-backup/*-backup.hg (glob) $ hg blackbox -l 5 1970/01/01 00:00:00 bob (*)> strip tip (glob) 1970/01/01 00:00:00 bob (*)> saved backup bundle to $TESTTMP/blackboxtest2/.hg/strip-backup/*-backup.hg (glob) 1970/01/01 00:00:00 bob (*)> updated base branch cache in ?.???? seconds (glob) 1970/01/01 00:00:00 bob (*)> wrote base branch cache with 1 labels and 2 nodes (glob) 1970/01/01 00:00:00 bob (*)> strip tip exited 0 after * seconds (glob) extension and python hooks - use the eol extension for a pythonhook $ echo '[extensions]' >> .hg/hgrc $ echo 'eol=' >> .hg/hgrc $ echo '[hooks]' >> .hg/hgrc $ echo 'update = echo hooked' >> .hg/hgrc $ hg update hooked 1 files updated, 0 files merged, 0 files removed, 0 files unresolved $ hg blackbox -l 5 1970/01/01 00:00:00 bob (*)> update (glob) 1970/01/01 00:00:00 bob (*)> writing .hg/cache/tags2-visible with 0 tags (glob) 1970/01/01 00:00:00 bob (*)> pythonhook-preupdate: hgext.eol.preupdate finished in * seconds (glob) 1970/01/01 00:00:00 bob (*)> exthook-update: echo hooked finished in * seconds (glob) 1970/01/01 00:00:00 bob (*)> update exited 0 after * seconds (glob) log rotation $ echo '[blackbox]' >> .hg/hgrc $ echo 'maxsize = 20 b' >> .hg/hgrc $ echo 'maxfiles = 3' >> .hg/hgrc $ hg status $ hg status $ hg status $ hg tip -q 2:d02f48003e62 $ ls .hg/blackbox.log* .hg/blackbox.log .hg/blackbox.log.1 .hg/blackbox.log.2 cleanup $ cd ..