branchcache: skip entries that are topological heads in the on disk file
In the majority of cases, topological heads are also branch heads. We have
efficient way to get the topological heads and efficient way to retrieve
their branch information. So there is little value in putting them in the branch
cache file explicitly. On the contrary, writing them explicitly tend to create
very large cache file that are inefficient to read and update.
So the branch cache v3 format is no longer including them. This changeset focus
on the format aspect and have no focus on the performance aspect. We will cover
that later.
#require serve
Some tests for hgweb responding to HEAD requests
$ hg init test
$ cd test
$ mkdir da
$ echo foo > da/foo
$ echo foo > foo
$ hg ci -Ambase
adding da/foo
adding foo
$ hg bookmark -r0 '@'
$ hg bookmark -r0 'a b c'
$ hg bookmark -r0 'd/e/f'
$ hg serve -n test -p $HGPORT -d --pid-file=hg.pid -A access.log -E errors.log
$ cat hg.pid >> $DAEMON_PIDS
manifest
$ get-with-headers.py localhost:$HGPORT --method=HEAD 'file/tip/?style=raw' - date etag server
200 Script output follows
content-type: text/plain; charset=ascii
$ get-with-headers.py localhost:$HGPORT --method=HEAD 'file/tip/da?style=raw' - date etag server
200 Script output follows
content-type: text/plain; charset=ascii
plain file
$ get-with-headers.py localhost:$HGPORT --method=HEAD 'file/tip/foo?style=raw' - date etag server
200 Script output follows
content-disposition: inline; filename="foo"
content-length: 4
content-type: application/binary
should give a 404 - static file that does not exist
$ get-with-headers.py localhost:$HGPORT --method=HEAD 'static/bogus' - date etag server
404 Not Found
content-type: text/html; charset=ascii
[1]
should give a 404 - bad revision
$ get-with-headers.py localhost:$HGPORT --method=HEAD 'file/spam/foo?style=raw' - date etag server
404 Not Found
content-type: text/plain; charset=ascii
[1]
should give a 400 - bad command
$ get-with-headers.py localhost:$HGPORT --method=HEAD 'file/tip/foo?cmd=spam&style=raw' - date etag server
400* (glob)
content-type: text/plain; charset=ascii
[1]
should give a 404 - file does not exist
$ get-with-headers.py localhost:$HGPORT --method=HEAD 'file/tip/bork?style=raw' - date etag server
404 Not Found
content-type: text/plain; charset=ascii
[1]
try bad style
$ get-with-headers.py localhost:$HGPORT --method=HEAD 'file/tip/?style=foobar' - date etag server
200 Script output follows
content-type: text/html; charset=ascii
log
$ get-with-headers.py localhost:$HGPORT --method=HEAD 'log?style=raw' - date etag server
200 Script output follows
content-type: text/plain; charset=ascii
access bookmarks
$ get-with-headers.py localhost:$HGPORT --method=HEAD 'rev/@?style=paper' - date etag server
200 Script output follows
content-type: text/html; charset=ascii
static file
$ get-with-headers.py localhost:$HGPORT --method=HEAD 'static/style-gitweb.css' - date etag server
200 Script output follows
content-length: 9074
content-type: text/css
$ killdaemons.py
$ cd ..