Mercurial > hg
view tests/test-wireproto.py @ 40026:7e807b8a9e56
wireprotov2: client support for following content redirects
And with the server actually sending content redirects, it is finally
time to implement client support for following them!
When a redirect response is seen, we wait until all data for that
request has been received (it should be nearly immediate since no
data is expected to follow the redirect message). Then we use
a URL opener to make a request. We stuff that response into the
client handler and construct a new response object to track it.
When readdata() is called for servicing requests, we attempt to
read data from the first redirected response. During data reading,
data is processed similarly to as if it came from a frame payload.
The existing test for the functionality demonstrates the client
transparently following the redirect and obtaining the command
response data from an alternate URL!
There is still plenty of work to do here, including shoring up
testing. I'm not convinced things will work in the presence of
multiple redirect responses. And we don't yet implement support
for integrity verification or configuring server certificates
to validate the connection. But it's a start. And it should enable
us to start experimenting with "real" caches.
Differential Revision: https://phab.mercurial-scm.org/D4778
author | Gregory Szorc <gregory.szorc@gmail.com> |
---|---|
date | Wed, 26 Sep 2018 18:08:08 -0700 |
parents | 32bc3815efae |
children | d6569f1e9b37 |
line wrap: on
line source
from __future__ import absolute_import, print_function import sys from mercurial import ( error, pycompat, ui as uimod, util, wireprototypes, wireprotov1peer, wireprotov1server, ) from mercurial.utils import ( stringutil, ) stringio = util.stringio class proto(object): def __init__(self, args): self.args = args self.name = 'dummyproto' def getargs(self, spec): args = self.args args.setdefault(b'*', {}) names = spec.split() return [args[n] for n in names] def checkperm(self, perm): pass wireprototypes.TRANSPORTS['dummyproto'] = { 'transport': 'dummy', 'version': 1, } class clientpeer(wireprotov1peer.wirepeer): def __init__(self, serverrepo, ui): self.serverrepo = serverrepo self.ui = ui def url(self): return b'test' def local(self): return None def peer(self): return self def canpush(self): return True def close(self): pass def capabilities(self): return [b'batch'] def _call(self, cmd, **args): args = pycompat.byteskwargs(args) res = wireprotov1server.dispatch(self.serverrepo, proto(args), cmd) if isinstance(res, wireprototypes.bytesresponse): return res.data elif isinstance(res, bytes): return res else: raise error.Abort('dummy client does not support response type') def _callstream(self, cmd, **args): return stringio(self._call(cmd, **args)) @wireprotov1peer.batchable def greet(self, name): f = wireprotov1peer.future() yield {b'name': mangle(name)}, f yield unmangle(f.value) class serverrepo(object): def greet(self, name): return b"Hello, " + name def filtered(self, name): return self def mangle(s): return b''.join(pycompat.bytechr(ord(c) + 1) for c in pycompat.bytestr(s)) def unmangle(s): return b''.join(pycompat.bytechr(ord(c) - 1) for c in pycompat.bytestr(s)) def greet(repo, proto, name): return mangle(repo.greet(unmangle(name))) wireprotov1server.commands[b'greet'] = (greet, b'name') srv = serverrepo() clt = clientpeer(srv, uimod.ui()) def printb(data, end=b'\n'): out = getattr(sys.stdout, 'buffer', sys.stdout) out.write(data + end) out.flush() printb(clt.greet(b"Foobar")) with clt.commandexecutor() as e: fgreet1 = e.callcommand(b'greet', {b'name': b'Fo, =;:<o'}) fgreet2 = e.callcommand(b'greet', {b'name': b'Bar'}) printb(stringutil.pprint([f.result() for f in (fgreet1, fgreet2)], bprefix=True))