From: robk-tahoe Date: Thu, 3 Apr 2008 22:57:07 +0000 (-0700) Subject: key_generator: service related cleanups, incorporation into system test X-Git-Url: https://git.rkrishnan.org/components/%22news.html/about.html?a=commitdiff_plain;h=1ae2c39862039a6c8856c301505de210a383a5ac;p=tahoe-lafs%2Ftahoe-lafs.git key_generator: service related cleanups, incorporation into system test this cleans up KeyGenerator to be a service (a subservice of the KeyGeneratorService as instantiated by the key-generator.tac app) this means that the timer which replenishes the keypool will be shutdown cleanly when the service is stopped. adds checks on the key_generator service and client into the system test 'test_mutable' such that one of the nodes (clients[3]) uses the key_generator service, and checks that mutable file creation in that node, via a variety of means, are all consuming keys from the key_generator. --- diff --git a/src/allmydata/key_generator.py b/src/allmydata/key_generator.py index 35ada63d..964b2b38 100644 --- a/src/allmydata/key_generator.py +++ b/src/allmydata/key_generator.py @@ -3,7 +3,6 @@ import os import time import foolscap -from foolscap.eventual import eventually from zope.interface import implements from twisted.internet import reactor from twisted.application import service @@ -12,7 +11,7 @@ from twisted.python import log from pycryptopp.publickey import rsa from allmydata.interfaces import RIKeyGenerator -class KeyGenerator(foolscap.Referenceable): +class KeyGenerator(service.MultiService, foolscap.Referenceable): implements(RIKeyGenerator) DEFAULT_KEY_SIZE = 2048 @@ -21,9 +20,18 @@ class KeyGenerator(foolscap.Referenceable): verbose = False def __init__(self): + service.MultiService.__init__(self) self.keypool = [] self.last_fetch = 0 - eventually(self.maybe_refill_pool) + + def startService(self): + self.timer = reactor.callLater(0, self.maybe_refill_pool) + return service.MultiService.startService(self) + + def stopService(self): + if self.timer.active(): + self.timer.cancel() + return service.MultiService.stopService(self) def __repr__(self): return '' % (len(self.keypool),) @@ -34,7 +42,10 @@ class KeyGenerator(foolscap.Referenceable): def reset_timer(self): self.last_fetch = time.time() - reactor.callLater(self.pool_refresh_delay, self.maybe_refill_pool) + if self.timer.active(): + self.timer.reset(self.pool_refresh_delay) + else: + self.timer = reactor.callLater(self.pool_refresh_delay, self.maybe_refill_pool) def maybe_refill_pool(self): now = time.time() @@ -63,11 +74,13 @@ class KeyGenerator(foolscap.Referenceable): class KeyGeneratorService(service.MultiService): furl_file = 'key_generator.furl' - def __init__(self, display_furl=True): + def __init__(self, basedir='.', display_furl=True): service.MultiService.__init__(self) - self.tub = foolscap.Tub(certFile='key_generator.pem') + self.basedir = basedir + self.tub = foolscap.Tub(certFile=os.path.join(self.basedir, 'key_generator.pem')) self.tub.setServiceParent(self) self.key_generator = KeyGenerator() + self.key_generator.setServiceParent(self) portnum = self.get_portnum() self.listener = self.tub.listenOn(portnum or 'tcp:0') @@ -78,14 +91,17 @@ class KeyGeneratorService(service.MultiService): d.addErrback(log.err) def get_portnum(self): - if os.path.exists('portnum'): - return file('portnum', 'rb').read().strip() + portnumfile = os.path.join(self.basedir, 'portnum') + if os.path.exists(portnumfile): + return file(portnumfile, 'rb').read().strip() def save_portnum(self, junk): portnum = self.listener.getPortnum() - file('portnum', 'wb').write('%d\n' % (portnum,)) + portnumfile = os.path.join(self.basedir, 'portnum') + file(portnumfile, 'wb').write('%d\n' % (portnum,)) def tub_ready(self, junk, display_furl): - self.keygen_furl = self.tub.registerReference(self.key_generator, furlFile=self.furl_file) + kgf = os.path.join(self.basedir, self.furl_file) + self.keygen_furl = self.tub.registerReference(self.key_generator, furlFile=kgf) if display_furl: - print 'key generator at:', self.keygen_furl + print 'key generator at:', self.keygen_furl diff --git a/src/allmydata/test/test_keygen.py b/src/allmydata/test/test_keygen.py index 692681a6..7db87539 100644 --- a/src/allmydata/test/test_keygen.py +++ b/src/allmydata/test/test_keygen.py @@ -52,7 +52,7 @@ class KeyGenService(unittest.TestCase, testutil.PollMixin): d = eventual.fireEventually() d.addCallback(p, 'waiting for pool to fill up') d.addCallback(lambda junk: self.poll(keypool_full, timeout=16)) - + d.addCallback(p, 'grabbing a few keys') # grab a few keys, check that pool size shrinks def get_key(junk=None): @@ -89,7 +89,7 @@ class KeyGenService(unittest.TestCase, testutil.PollMixin): # and check it still works (will gen key synchronously on demand) d.addCallback(get_key) d.addCallback(check_key_works) - + d.addCallback(p, 'checking pool replenishment') # check that the pool will refill timeout = 2*kgs.key_generator.pool_size + kgs.key_generator.pool_refresh_delay diff --git a/src/allmydata/test/test_system.py b/src/allmydata/test/test_system.py index 8227b528..e19c57d6 100644 --- a/src/allmydata/test/test_system.py +++ b/src/allmydata/test/test_system.py @@ -16,7 +16,8 @@ from allmydata.scripts import runner from allmydata.interfaces import IDirectoryNode, IFileNode, IFileURI from allmydata.mutable import NotMutableError from allmydata.stats import PickleStatsGatherer -from foolscap.eventual import flushEventualQueue +from allmydata.key_generator import KeyGeneratorService +from foolscap.eventual import flushEventualQueue, fireEventually from foolscap import DeadReferenceError, Tub from twisted.python.failure import Failure from twisted.web.client import getPage @@ -80,6 +81,7 @@ class SystemTest(testutil.SignalMixin, testutil.PollMixin, unittest.TestCase): d = self.introducer.when_tub_ready() d.addCallback(self._get_introducer_web) d.addCallback(self._set_up_stats_gatherer) + d.addCallback(self._set_up_key_generator) d.addCallback(self._set_up_nodes_2) d.addCallback(self._grab_stats) return d @@ -102,6 +104,25 @@ class SystemTest(testutil.SignalMixin, testutil.PollMixin, unittest.TestCase): self.add_service(self.stats_gatherer) self.stats_gatherer_furl = self.stats_gatherer.get_furl() + def _set_up_key_generator(self, res): + kgsdir = self.getdir("key_generator") + fileutil.make_dirs(kgsdir) + + self.key_generator_svc = KeyGeneratorService(kgsdir, display_furl=False) + self.key_generator_svc.key_generator.pool_size = 4 + self.key_generator_svc.key_generator.pool_refresh_delay = 60 + self.add_service(self.key_generator_svc) + + d = fireEventually() + def check_for_furl(): + return os.path.exists(os.path.join(kgsdir, 'key_generator.furl')) + d.addCallback(lambda junk: self.poll(check_for_furl, timeout=30)) + def get_furl(junk): + kgf = os.path.join(kgsdir, 'key_generator.furl') + self.key_generator_furl = file(kgf, 'rb').read().strip() + d.addCallback(get_furl) + return d + def _set_up_nodes_2(self, res): q = self.introducer self.introducer_furl = q.introducer_url @@ -112,12 +133,14 @@ class SystemTest(testutil.SignalMixin, testutil.PollMixin, unittest.TestCase): basedirs.append(basedir) fileutil.make_dirs(basedir) if i == 0: - # client[0] runs a webserver and a helper + # client[0] runs a webserver and a helper, no key_generator open(os.path.join(basedir, "webport"), "w").write("tcp:0:interface=127.0.0.1") open(os.path.join(basedir, "run_helper"), "w").write("yes\n") if i == 3: - # client[3] runs a webserver and uses a helper + # client[3] runs a webserver and uses a helper, uses key_generator open(os.path.join(basedir, "webport"), "w").write("tcp:0:interface=127.0.0.1") + kgf = "%s\n" % (self.key_generator_furl,) + open(os.path.join(basedir, "key_generator.furl"), "w").write(kgf) if self.createprivdir: fileutil.make_dirs(os.path.join(basedir, "private")) open(os.path.join(basedir, "private", "root_dir.cap"), "w") @@ -801,6 +824,23 @@ class SystemTest(testutil.SignalMixin, testutil.PollMixin, unittest.TestCase): return d1 d.addCallback(_created_dirnode) + def wait_for_c3_kg_conn(): + return self.clients[3]._key_generator is not None + d.addCallback(lambda junk: self.poll(wait_for_c3_kg_conn)) + + def check_kg_poolsize(junk, size_delta): + self.failUnlessEqual(len(self.key_generator_svc.key_generator.keypool), + self.key_generator_svc.key_generator.pool_size + size_delta) + + d.addCallback(check_kg_poolsize, 0) + d.addCallback(lambda junk: self.clients[3].create_mutable_file('hello, world')) + d.addCallback(check_kg_poolsize, -1) + d.addCallback(lambda junk: self.clients[3].create_empty_dirnode()) + d.addCallback(check_kg_poolsize, -2) + # use_helper induces use of clients[3], which is the using-key_gen client + d.addCallback(lambda junk: self.POST("uri", use_helper=True, t="mkdir", name='george')) + d.addCallback(check_kg_poolsize, -3) + return d # The default 120 second timeout went off when running it under valgrind # on my old Windows laptop, so I'm bumping up the timeout.