Mercurial > hg
view tests/test-batching.py @ 25591:f1d46075b13a
verify: check the subrepository references in .hgsubstate
While hopefully atypical, there are reasons that a subrepository revision can be
lost that aren't covered by corruption of the .hgsubstate revlog. Such things
can happen when a subrepo is amended, stripped or simply isn't pulled from
upstream because the parent repo revision wasn't updated yet. There's no way to
know if it is an error, but this will find potential problems sooner than when
some random revision is updated.
Until recently, convert made no attempt at rewriting the .hgsubstate file. The
impetuous for this is to verify the conversion of some repositories, and this is
orders of magnitude faster than a bash script from 0..tip that does an
'hg update -C $rev'. But it is equally useful to determine if everything has
been pulled down before taking a thumb drive on the go.
It feels somewhat wrong to leave this out of verifymod (mostly because the file
is already read in there, and the final summary is printed before the subrepos
are checked). But verifymod looks very low level, so importing subrepo stuff
there seems more wrong.
author | Matt Harbison <matt_harbison@yahoo.com> |
---|---|
date | Tue, 16 Jun 2015 16:15:15 -0400 |
parents | a7d5816087a9 |
children | cbbdd085c991 |
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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 mercurial.wireproto import localbatch, remotebatch, batchable, future # 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 def batch(self): '''Support for local batching.''' return localbatch(self) # 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 (possibly proxied) methods. batch = it.batch() # The calls return futures to eventually hold results. foo = batch.foo(one="One", two="Two") foo2 = batch.foo(None) bar = batch.bar("Eins", "Zwei") # We can call non-batchable proxy methods, but the break the current batch # request and cause additional roundtrips. greet = batch.greet(name="John Smith") # We can also add local methods into the mix, but they break the batch too. hello = batch.hello() bar2 = batch.bar(b="Uno", a="Due") # Only now are all the calls executed in sequence, with as few roundtrips # as possible. batch.submit() # After the call to submit, the futures actually contain values. print foo.value print foo2.value print bar.value print greet.value print hello.value print bar2.value # 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,)]) return res.split(';') def batch(self): return remotebatch(self) @batchable def foo(self, one, two=None): if not one: yield "Nope", None encargs = [('one', mangle(one),), ('two', mangle(two),)] encresref = future() yield encargs, encresref yield unmangle(encresref.value) @batchable def bar(self, b, a): encresref = 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)