wireproto: use CBOR for command requests
Now that we're using CBOR in the new wire protocol, let's convert
command requests to it.
Before I wrote this patch and was even thinking about CBOR, I was
thinking about how commands should be issued and came to the
conclusion that we didn't need separate frames to represent the
command name from its arguments. I already had a partially
completed patch prepared to merge the frames.
But with CBOR, it makes the implementation a bit simpler because
we don't need to roll our own serialization.
The changes here are a bit invasive. I tried to split this into
multiple commits to make it easier to review. But it was just too
hard.
* "command name" and "command argument" frames have been collapsed
into a "command request" frame.
* The flags for this new frame are totally different.
* Frame processing has been overhauled to reflect the new order
of things.
* Test fallout was significant. A handful of tests were removed.
Altogether, I think the new code is simpler. We don't have
complicated state around receiving commands. We're either receiving
command request frames or command data frames. We /could/
potentially collapse command data frames into command request
frames. Although I'd have to think a bit more about this before
I do it.
Differential Revision: https://phab.mercurial-scm.org/D2951
#!/usr/bin/env python
#
# check-perf-code - (historical) portability checker for contrib/perf.py
from __future__ import absolute_import
import os
import sys
# write static check patterns here
perfpypats = [
[
(r'(branchmap|repoview)\.subsettable',
"use getbranchmapsubsettable() for early Mercurial"),
(r'\.(vfs|svfs|opener|sopener)',
"use getvfs()/getsvfs() for early Mercurial"),
(r'ui\.configint',
"use getint() instead of ui.configint() for early Mercurial"),
],
# warnings
[
]
]
def modulewhitelist(names):
replacement = [('.py', ''), ('.c', ''), # trim suffix
('mercurial%s' % (os.sep), ''), # trim "mercurial/" path
]
ignored = {'__init__'}
modules = {}
# convert from file name to module name, and count # of appearances
for name in names:
name = name.strip()
for old, new in replacement:
name = name.replace(old, new)
if name not in ignored:
modules[name] = modules.get(name, 0) + 1
# list up module names, which appear multiple times
whitelist = []
for name, count in modules.items():
if count > 1:
whitelist.append(name)
return whitelist
if __name__ == "__main__":
# in this case, it is assumed that result of "hg files" at
# multiple revisions is given via stdin
whitelist = modulewhitelist(sys.stdin)
assert whitelist, "module whitelist is empty"
# build up module whitelist check from file names given at runtime
perfpypats[0].append(
# this matching pattern assumes importing modules from
# "mercurial" package in the current style below, for simplicity
#
# from mercurial import (
# foo,
# bar,
# baz
# )
((r'from mercurial import [(][a-z0-9, \n#]*\n(?! *%s,|^[ #]*\n|[)])'
% ',| *'.join(whitelist)),
"import newer module separately in try clause for early Mercurial"
))
# import contrib/check-code.py as checkcode
assert 'RUNTESTDIR' in os.environ, "use check-perf-code.py in *.t script"
contribpath = os.path.join(os.environ['RUNTESTDIR'], '..', 'contrib')
sys.path.insert(0, contribpath)
checkcode = __import__('check-code')
# register perf.py specific entry with "checks" in check-code.py
checkcode.checks.append(('perf.py', r'contrib/perf.py$', '',
checkcode.pyfilters, perfpypats))
sys.exit(checkcode.main())