exchange: parse requirements from stream clone specification string
Stream clone bundles can only be consumed if the consumer supports the
exact format requirements that were present on the producer.
This patch adds support for encoding and verifying the format
requirements on the bundle specification string for a stream clone
bundle are supported by the local repository. If they aren't, we raise
an UnsupportedBundleSpecification, just like we do when an unknown
compression or bundle type is encountered.
The impetus for this patch is so the clone bundles manifest can
advertise stream clone bundles and so clients can filter out stream
clones with unsupported format requirements. e.g. a stream clone
produced with the not-yet-invented "revlogv2" format will be ignored by
clients that only support "revlogv1."
$ hg init debugrevlog
$ cd debugrevlog
$ echo a > a
$ hg ci -Am adda
adding a
$ hg debugrevlog -m
format : 1
flags : inline
revisions : 1
merges : 0 ( 0.00%)
normal : 1 (100.00%)
revisions : 1
full : 1 (100.00%)
deltas : 0 ( 0.00%)
revision size : 44
full : 44 (100.00%)
deltas : 0 ( 0.00%)
avg chain length : 0
max chain length : 0
compression ratio : 0
uncompressed data size (min/max/avg) : 43 / 43 / 43
full revision size (min/max/avg) : 44 / 44 / 44
delta size (min/max/avg) : 0 / 0 / 0
Test debugindex, with and without the --debug flag
$ hg debugindex a
rev offset length .... linkrev nodeid p1 p2 (re)
0 0 3 .... 0 b789fdd96dc2 000000000000 000000000000 (re)
$ hg --debug debugindex a
rev offset length .... linkrev nodeid p1 p2 (re)
0 0 3 .... 0 b789fdd96dc2f3bd229c1dd8eedf0fc60e2b68e3 0000000000000000000000000000000000000000 0000000000000000000000000000000000000000 (re)
$ hg debugindex -f 1 a
rev flag offset length size .... link p1 p2 nodeid (re)
0 0000 0 3 2 .... 0 -1 -1 b789fdd96dc2 (re)
$ hg --debug debugindex -f 1 a
rev flag offset length size .... link p1 p2 nodeid (re)
0 0000 0 3 2 .... 0 -1 -1 b789fdd96dc2f3bd229c1dd8eedf0fc60e2b68e3 (re)
Test max chain len
$ cat >> $HGRCPATH << EOF
> [format]
> maxchainlen=4
> EOF
$ printf "This test checks if maxchainlen config value is respected also it can serve as basic test for debugrevlog -d <file>.\n" >> a
$ hg ci -m a
$ printf "b\n" >> a
$ hg ci -m a
$ printf "c\n" >> a
$ hg ci -m a
$ printf "d\n" >> a
$ hg ci -m a
$ printf "e\n" >> a
$ hg ci -m a
$ printf "f\n" >> a
$ hg ci -m a
$ printf 'g\n' >> a
$ hg ci -m a
$ printf 'h\n' >> a
$ hg ci -m a
$ hg debugrevlog -d a
# rev p1rev p2rev start end deltastart base p1 p2 rawsize totalsize compression heads chainlen
0 -1 -1 0 ??? 0 0 0 0 ??? ???? ? 1 0 (glob)
1 0 -1 ??? ??? 0 0 0 0 ??? ???? ? 1 1 (glob)
2 1 -1 ??? ??? ??? ??? ??? 0 ??? ???? ? 1 2 (glob)
3 2 -1 ??? ??? ??? ??? ??? 0 ??? ???? ? 1 3 (glob)
4 3 -1 ??? ??? ??? ??? ??? 0 ??? ???? ? 1 4 (glob)
5 4 -1 ??? ??? ??? ??? ??? 0 ??? ???? ? 1 0 (glob)
6 5 -1 ??? ??? ??? ??? ??? 0 ??? ???? ? 1 1 (glob)
7 6 -1 ??? ??? ??? ??? ??? 0 ??? ???? ? 1 2 (glob)
8 7 -1 ??? ??? ??? ??? ??? 0 ??? ???? ? 1 3 (glob)
$ cd ..
Test internal debugstacktrace command
$ cat > debugstacktrace.py << EOF
> from mercurial.util import debugstacktrace, dst, sys
> def f():
> dst('hello world')
> def g():
> f()
> debugstacktrace(skip=-5, f=sys.stdout)
> g()
> EOF
$ python debugstacktrace.py
hello world at:
debugstacktrace.py:7 in * (glob)
debugstacktrace.py:5 in g
debugstacktrace.py:3 in f
stacktrace at:
debugstacktrace.py:7 *in * (glob)
debugstacktrace.py:6 *in g (glob)
*/util.py:* in debugstacktrace (glob)