Mercurial > hg
view tests/test-debugcommands.t @ 29859:a1092e2d70a3
help: internals topic for wire protocol
The Mercurial wire protocol is under-documented. This includes a lack
of source docstrings and comments as well as pages on the official
wiki.
This patch adds the beginnings of "internals" documentation on the
wire protocol.
The documentation should have nearly complete coverage on the
lower-level parts of the protocol, such as the different transport
mechanims, how commands and arguments are sent, capabilities, and,
of course, the commands themselves.
As part of writing this documentation, I discovered a number of
deficiencies in the protocol and bugs in the implementation. I've
started sending patches for some of the issues. I hope to send a lot
more.
This patch starts with the scaffolding for a new internals page.
author | Gregory Szorc <gregory.szorc@gmail.com> |
---|---|
date | Mon, 22 Aug 2016 19:46:39 -0700 |
parents | 4efb36ecaaec |
children | 932b18c95e11 |
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$ cat << EOF >> $HGRCPATH > [format] > usegeneraldelta=yes > EOF $ hg init debugrevlog $ cd debugrevlog $ echo a > a $ hg ci -Am adda adding a $ hg debugrevlog -m format : 1 flags : inline, generaldelta 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) debugdelta chain basic output $ hg debugdeltachain -m rev chain# chainlen prev delta size rawsize chainsize ratio lindist extradist extraratio 0 1 1 -1 base 44 43 44 1.02326 44 0 0.00000 $ hg debugdeltachain -m -T '{rev} {chainid} {chainlen}\n' 0 1 1 $ hg debugdeltachain -m -Tjson [ { "chainid": 1, "chainlen": 1, "chainratio": 1.02325581395, "chainsize": 44, "compsize": 44, "deltatype": "base", "extradist": 0, "extraratio": 0.0, "lindist": 44, "prevrev": -1, "rev": 0, "uncompsize": 43 } ] 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)