mirror of
https://github.com/tahoe-lafs/tahoe-lafs.git
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239 lines
8.1 KiB
Python
239 lines
8.1 KiB
Python
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import os, time
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from zope.interface import implements
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from twisted.application import service
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from twisted.internet import defer
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from twisted.internet.interfaces import IConsumer
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from foolscap.api import Referenceable
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from allmydata.interfaces import RIControlClient, IFileNode
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from allmydata.util import fileutil, mathutil
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from allmydata.immutable import upload
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from twisted.python import log
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def get_memory_usage():
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# this is obviously linux-specific
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stat_names = ("VmPeak",
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"VmSize",
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#"VmHWM",
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"VmData")
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stats = {}
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try:
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for line in open("/proc/self/status", "r").readlines():
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name, right = line.split(":",2)
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if name in stat_names:
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assert right.endswith(" kB\n")
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right = right[:-4]
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stats[name] = int(right) * 1024
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except:
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# Probably not on (a compatible version of) Linux
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stats['VmSize'] = 0
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stats['VmPeak'] = 0
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return stats
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def log_memory_usage(where=""):
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stats = get_memory_usage()
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log.msg("VmSize: %9d VmPeak: %9d %s" % (stats["VmSize"],
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stats["VmPeak"],
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where))
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class FileWritingConsumer:
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implements(IConsumer)
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def __init__(self, filename):
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self.done = False
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self.f = open(filename, "wb")
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def registerProducer(self, p, streaming):
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if streaming:
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p.resumeProducing()
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else:
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while not self.done:
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p.resumeProducing()
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def write(self, data):
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self.f.write(data)
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def unregisterProducer(self):
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self.done = True
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self.f.close()
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class ControlServer(Referenceable, service.Service):
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implements(RIControlClient)
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def remote_wait_for_client_connections(self, num_clients):
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return self.parent.debug_wait_for_client_connections(num_clients)
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def remote_upload_from_file_to_uri(self, filename, convergence):
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uploader = self.parent.getServiceNamed("uploader")
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u = upload.FileName(filename, convergence=convergence)
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d = uploader.upload(u)
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d.addCallback(lambda results: results.uri)
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return d
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def remote_download_from_uri_to_file(self, uri, filename):
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filenode = self.parent.create_node_from_uri(uri, name=filename)
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if not IFileNode.providedBy(filenode):
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raise AssertionError("The URI does not reference a file.")
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c = FileWritingConsumer(filename)
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d = filenode.read(c)
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d.addCallback(lambda res: filename)
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return d
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def remote_speed_test(self, count, size, mutable):
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assert size > 8
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log.msg("speed_test: count=%d, size=%d, mutable=%s" % (count, size,
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mutable))
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st = SpeedTest(self.parent, count, size, mutable)
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return st.run()
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def remote_get_memory_usage(self):
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return get_memory_usage()
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def remote_measure_peer_response_time(self):
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# I'd like to average together several pings, but I don't want this
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# phase to take more than 10 seconds. Expect worst-case latency to be
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# 300ms.
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results = {}
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sb = self.parent.get_storage_broker()
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everyone = sb.get_all_servers()
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num_pings = int(mathutil.div_ceil(10, (len(everyone) * 0.3)))
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everyone = list(everyone) * num_pings
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d = self._do_one_ping(None, everyone, results)
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return d
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def _do_one_ping(self, res, everyone_left, results):
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if not everyone_left:
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return results
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peerid, connection = everyone_left.pop(0)
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start = time.time()
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d = connection.callRemote("get_buckets", "\x00"*16)
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def _done(ignored):
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stop = time.time()
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elapsed = stop - start
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if peerid in results:
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results[peerid].append(elapsed)
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else:
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results[peerid] = [elapsed]
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d.addCallback(_done)
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d.addCallback(self._do_one_ping, everyone_left, results)
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def _average(res):
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averaged = {}
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for peerid,times in results.iteritems():
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averaged[peerid] = sum(times) / len(times)
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return averaged
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d.addCallback(_average)
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return d
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class SpeedTest:
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def __init__(self, parent, count, size, mutable):
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self.parent = parent
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self.count = count
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self.size = size
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self.mutable_mode = mutable
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self.uris = {}
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self.basedir = os.path.join(self.parent.basedir, "_speed_test_data")
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def run(self):
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self.create_data()
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d = self.do_upload()
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d.addCallback(lambda res: self.do_download())
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d.addBoth(self.do_cleanup)
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d.addCallback(lambda res: (self.upload_time, self.download_time))
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return d
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def create_data(self):
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fileutil.make_dirs(self.basedir)
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for i in range(self.count):
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s = self.size
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fn = os.path.join(self.basedir, str(i))
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if os.path.exists(fn):
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os.unlink(fn)
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f = open(fn, "w")
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f.write(os.urandom(8))
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s -= 8
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while s > 0:
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chunk = min(s, 4096)
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f.write("\x00" * chunk)
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s -= chunk
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f.close()
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def do_upload(self):
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d = defer.succeed(None)
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def _create_slot(res):
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d1 = self.parent.create_mutable_file("")
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def _created(n):
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self._n = n
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d1.addCallback(_created)
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return d1
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if self.mutable_mode == "upload":
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d.addCallback(_create_slot)
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def _start(res):
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self._start = time.time()
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d.addCallback(_start)
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def _record_uri(uri, i):
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self.uris[i] = uri
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def _upload_one_file(ignored, i):
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if i >= self.count:
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return
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fn = os.path.join(self.basedir, str(i))
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if self.mutable_mode == "create":
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data = open(fn,"rb").read()
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d1 = self.parent.create_mutable_file(data)
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d1.addCallback(lambda n: n.get_uri())
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elif self.mutable_mode == "upload":
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data = open(fn,"rb").read()
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d1 = self._n.overwrite(data)
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d1.addCallback(lambda res: self._n.get_uri())
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else:
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up = upload.FileName(fn, convergence=None)
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d1 = self.parent.upload(up)
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d1.addCallback(lambda results: results.uri)
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d1.addCallback(_record_uri, i)
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d1.addCallback(_upload_one_file, i+1)
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return d1
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d.addCallback(_upload_one_file, 0)
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def _upload_done(ignored):
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stop = time.time()
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self.upload_time = stop - self._start
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d.addCallback(_upload_done)
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return d
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def do_download(self):
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start = time.time()
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d = defer.succeed(None)
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def _download_one_file(ignored, i):
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if i >= self.count:
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return
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n = self.parent.create_node_from_uri(self.uris[i])
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if not IFileNode.providedBy(n):
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raise AssertionError("The URI does not reference a file.")
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if n.is_mutable():
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d1 = n.download_best_version()
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else:
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d1 = n.read(DiscardingConsumer())
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d1.addCallback(_download_one_file, i+1)
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return d1
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d.addCallback(_download_one_file, 0)
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def _download_done(ignored):
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stop = time.time()
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self.download_time = stop - start
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d.addCallback(_download_done)
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return d
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def do_cleanup(self, res):
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for i in range(self.count):
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fn = os.path.join(self.basedir, str(i))
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os.unlink(fn)
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return res
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class DiscardingConsumer:
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implements(IConsumer)
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def __init__(self):
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self.done = False
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def registerProducer(self, p, streaming):
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if streaming:
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p.resumeProducing()
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else:
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while not self.done:
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p.resumeProducing()
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def write(self, data):
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pass
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def unregisterProducer(self):
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self.done = True
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