Mercurial > hg
view tests/test-bundle2-pushback.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 | 622782ea9cf3 |
children | 8e6f4939a69a |
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$ cat > bundle2.py << EOF > """A small extension to test bundle2 pushback parts. > Current bundle2 implementation doesn't provide a way to generate those > parts, so they must be created by extensions. > """ > from mercurial import bundle2, pushkey, exchange, util > def _newhandlechangegroup(op, inpart): > """This function wraps the changegroup part handler for getbundle. > It issues an additional pushkey part to send a new > bookmark back to the client""" > result = bundle2.handlechangegroup(op, inpart) > if 'pushback' in op.reply.capabilities: > params = {'namespace': 'bookmarks', > 'key': 'new-server-mark', > 'old': '', > 'new': 'tip'} > encodedparams = [(k, pushkey.encode(v)) for (k,v) in params.items()] > op.reply.newpart('pushkey', mandatoryparams=encodedparams) > else: > op.reply.newpart('output', data='pushback not enabled') > return result > _newhandlechangegroup.params = bundle2.handlechangegroup.params > bundle2.parthandlermapping['changegroup'] = _newhandlechangegroup > EOF $ cat >> $HGRCPATH <<EOF > [ui] > ssh = python "$TESTDIR/dummyssh" > username = nobody <no.reply@example.com> > > [alias] > tglog = log -G -T "{desc} [{phase}:{node|short}]" > EOF Set up server repository $ hg init server $ cd server $ echo c0 > f0 $ hg commit -Am 0 adding f0 Set up client repository $ cd .. $ hg clone ssh://user@dummy/server client -q $ cd client Enable extension $ cat >> $HGRCPATH <<EOF > [extensions] > bundle2=$TESTTMP/bundle2.py > EOF Without config $ cd ../client $ echo c1 > f1 $ hg commit -Am 1 adding f1 $ hg push pushing to ssh://user@dummy/server searching for changes remote: adding changesets remote: adding manifests remote: adding file changes remote: added 1 changesets with 1 changes to 1 files remote: pushback not enabled $ hg bookmark no bookmarks set $ cd ../server $ hg tglog o 1 [public:2b9c7234e035] | @ 0 [public:6cee5c8f3e5b] With config $ cd ../client $ echo '[experimental]' >> .hg/hgrc $ echo 'bundle2.pushback = True' >> .hg/hgrc $ echo c2 > f2 $ hg commit -Am 2 adding f2 $ hg push pushing to ssh://user@dummy/server searching for changes remote: adding changesets remote: adding manifests remote: adding file changes remote: added 1 changesets with 1 changes to 1 files $ hg bookmark new-server-mark 2:0a76dfb2e179 $ cd ../server $ hg tglog o 2 [public:0a76dfb2e179] | o 1 [public:2b9c7234e035] | @ 0 [public:6cee5c8f3e5b]