Mercurial > hg
view tests/test-batching.py @ 40955:f6187e60f792
help: present boolean arguments as "--[no-]foo"
This should make it much more discoverable (we document it in `hg help
flags`, but most users don't think to look there).
Note that flags that default to None (and not False) will not get this
new presentation. We can change the defaults to False later for flags
where it makes sense (probably almost all boolean flags).
Differential Revision: https://phab.mercurial-scm.org/D5432
author | Martin von Zweigbergk <martinvonz@google.com> |
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date | Fri, 14 Dec 2018 13:44:46 -0800 |
parents | 33a6eee08db2 |
children | b81ca9a3f4e4 |
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# test-batching.py - tests for transparent command batching # # Copyright 2011 Peter Arrenbrecht <peter@arrenbrecht.ch> # # This software may be used and distributed according to the terms of the # GNU General Public License version 2 or any later version. from __future__ import absolute_import, print_function import contextlib from mercurial import ( localrepo, wireprotov1peer, ) # equivalent of repo.repository class thing(object): def hello(self): return "Ready." # equivalent of localrepo.localrepository class localthing(thing): def foo(self, one, two=None): if one: return "%s and %s" % (one, two,) return "Nope" def bar(self, b, a): return "%s und %s" % (b, a,) def greet(self, name=None): return "Hello, %s" % name @contextlib.contextmanager def commandexecutor(self): e = localrepo.localcommandexecutor(self) try: yield e finally: e.close() # usage of "thing" interface def use(it): # Direct call to base method shared between client and server. print(it.hello()) # Direct calls to proxied methods. They cause individual roundtrips. print(it.foo("Un", two="Deux")) print(it.bar("Eins", "Zwei")) # Batched call to a couple of proxied methods. with it.commandexecutor() as e: ffoo = e.callcommand('foo', {'one': 'One', 'two': 'Two'}) fbar = e.callcommand('bar', {'b': 'Eins', 'a': 'Zwei'}) fbar2 = e.callcommand('bar', {'b': 'Uno', 'a': 'Due'}) print(ffoo.result()) print(fbar.result()) print(fbar2.result()) # local usage mylocal = localthing() print() print("== Local") use(mylocal) # demo remoting; mimicks what wireproto and HTTP/SSH do # shared def escapearg(plain): return (plain .replace(':', '::') .replace(',', ':,') .replace(';', ':;') .replace('=', ':=')) def unescapearg(escaped): return (escaped .replace(':=', '=') .replace(':;', ';') .replace(':,', ',') .replace('::', ':')) # server side # equivalent of wireproto's global functions class server(object): def __init__(self, local): self.local = local def _call(self, name, args): args = dict(arg.split('=', 1) for arg in args) return getattr(self, name)(**args) def perform(self, req): print("REQ:", req) name, args = req.split('?', 1) args = args.split('&') vals = dict(arg.split('=', 1) for arg in args) res = getattr(self, name)(**vals) print(" ->", res) return res def batch(self, cmds): res = [] for pair in cmds.split(';'): name, args = pair.split(':', 1) vals = {} for a in args.split(','): if a: n, v = a.split('=') vals[n] = unescapearg(v) res.append(escapearg(getattr(self, name)(**vals))) return ';'.join(res) def foo(self, one, two): return mangle(self.local.foo(unmangle(one), unmangle(two))) def bar(self, b, a): return mangle(self.local.bar(unmangle(b), unmangle(a))) def greet(self, name): return mangle(self.local.greet(unmangle(name))) myserver = server(mylocal) # local side # equivalent of wireproto.encode/decodelist, that is, type-specific marshalling # here we just transform the strings a bit to check we're properly en-/decoding def mangle(s): return ''.join(chr(ord(c) + 1) for c in s) def unmangle(s): return ''.join(chr(ord(c) - 1) for c in s) # equivalent of wireproto.wirerepository and something like http's wire format class remotething(thing): def __init__(self, server): self.server = server def _submitone(self, name, args): req = name + '?' + '&'.join(['%s=%s' % (n, v) for n, v in args]) return self.server.perform(req) def _submitbatch(self, cmds): req = [] for name, args in cmds: args = ','.join(n + '=' + escapearg(v) for n, v in args) req.append(name + ':' + args) req = ';'.join(req) res = self._submitone('batch', [('cmds', req,)]) for r in res.split(';'): yield r @contextlib.contextmanager def commandexecutor(self): e = wireprotov1peer.peerexecutor(self) try: yield e finally: e.close() @wireprotov1peer.batchable def foo(self, one, two=None): encargs = [('one', mangle(one),), ('two', mangle(two),)] encresref = wireprotov1peer.future() yield encargs, encresref yield unmangle(encresref.value) @wireprotov1peer.batchable def bar(self, b, a): encresref = wireprotov1peer.future() yield [('b', mangle(b),), ('a', mangle(a),)], encresref yield unmangle(encresref.value) # greet is coded directly. It therefore does not support batching. If it # does appear in a batch, the batch is split around greet, and the call to # greet is done in its own roundtrip. def greet(self, name=None): return unmangle(self._submitone('greet', [('name', mangle(name),)])) # demo remote usage myproxy = remotething(myserver) print() print("== Remote") use(myproxy)