view tests/test-wireproto.py @ 37112:43ffd9070da1

merge: use constants for actions

We finish up establishing named constants in this file with
actions.

I remember scratching my head trying to figure out what this
code was doing as part of addressing a recent security issue with
subrepos. Having the named constants in place definitely makes
things easier to read.

I'm not convinced the new constants have the best names (I'm not
an expert in this code). But they can be changed easily enough.

Also, since these constants are internal only, we might want
to change their values to something more human readable to
facilitate debugging. Or maybe we could employ an enum type
some day...

Differential Revision: https://phab.mercurial-scm.org/D2701

from __future__ import absolute_import, print_function

from mercurial import (
    error,
    pycompat,
    ui as uimod,
    util,
    wireproto,
    wireprototypes,
)
stringio = util.stringio

class proto(object):
    def __init__(self, args):
        self.args = args
    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

class clientpeer(wireproto.wirepeer):
    def __init__(self, serverrepo, ui):
        self.serverrepo = serverrepo
        self._ui = ui

    @property
    def ui(self):
        return self._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 = wireproto.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))

    @wireproto.batchable
    def greet(self, name):
        f = wireproto.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)))

wireproto.commands[b'greet'] = (greet, b'name',)

srv = serverrepo()
clt = clientpeer(srv, uimod.ui())

print(clt.greet(b"Foobar"))
b = clt.iterbatch()
list(map(b.greet, (b'Fo, =;:<o', b'Bar')))
b.submit()
print([r for r in b.results()])