revlog: addgroup checks if incoming deltas add censored revs, sets flag bit
A censored revision stored in a revlog should have the censored revlog index
flag bit set. This implies we must know if a revision is censored before we
add it to the revlog. When adding revisions from exchanged deltas, we would
prefer to determine this flag without decoding every single full text.
This change introduces a heuristic based on assumptions around the Mercurial
delta format and filelog metadata. Since deltas which produce a censored
revision must be full-replacement deltas, we can read the delta's first bytes
to check the filelog metadata. Since "censored" is the alphabetically first
filelog metadata key, censored filelog revisions have a well-known prefix we
can look for.
For more on the design and background of the censorship feature, see:
http://mercurial.selenic.com/wiki/CensorPlan
#require killdaemons
Test wire protocol unbundle with hashed heads (capability: unbundlehash)
Create a remote repository.
$ hg init remote
$ hg serve -R remote --config web.push_ssl=False --config web.allow_push=* -p $HGPORT -d --pid-file=hg1.pid -E error.log -A access.log
$ cat hg1.pid >> $DAEMON_PIDS
Clone the repository and push a change.
$ hg clone http://localhost:$HGPORT/ local
no changes found
updating to branch default
0 files updated, 0 files merged, 0 files removed, 0 files unresolved
$ touch local/README
$ hg ci -R local -A -m hoge
adding README
$ hg push -R local
pushing to http://localhost:$HGPORT/
searching for changes
remote: adding changesets
remote: adding manifests
remote: adding file changes
remote: added 1 changesets with 1 changes to 1 files
Ensure hashed heads format is used.
The hash here is always the same since the remote repository only has the null head.
$ cat access.log | grep unbundle
* - - [*] "POST /?cmd=unbundle HTTP/1.1" 200 - x-hgarg-1:heads=686173686564+6768033e216468247bd031a0a2d9876d79818f8f (glob)
Explicitly kill daemons to let the test exit on Windows
$ "$TESTDIR/killdaemons.py" $DAEMON_PIDS