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from unittest import TestCase
import time
import threading
from dogpile.core.nameregistry import NameRegistry
import random
import logging
log = logging.getLogger(__name__)
class NameRegistryTest(TestCase):
def test_name_registry(self):
success = [True]
num_operations = [0]
def create(identifier):
log.debug("Creator running for id: " + identifier)
return threading.Lock()
registry = NameRegistry(create)
baton = {
"beans":False,
"means":False,
"please":False
}
def do_something(name):
for iteration in xrange(20):
name = baton.keys()[random.randint(0, 2)]
lock = registry.get(name)
lock.acquire()
try:
if baton[name]:
success[0] = False
log.debug("Baton is already populated")
break
baton[name] = True
try:
time.sleep(random.random() * .01)
finally:
num_operations[0] += 1
baton[name] = False
finally:
lock.release()
log.debug("thread completed operations")
threads = []
for id_ in range(1, 20):
t = threading.Thread(target=do_something, args=("somename",))
t.start()
threads.append(t)
for t in threads:
t.join()
assert success[0]
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