class TestZookeeperWatcher(TestCase):
def __init__(self, name, hosts):
self.hosts = hosts
self.file_path = '/test_path'
self.file_data = 'test_data'
self.pointer_path = '/test_pointer'
self.pointer_data = self.file_path
TestCase.__init__(self, name)
def setUp(self):
self.zoo_client = KazooClient(hosts=self.hosts)
self.zoo_client.start()
# prepare data
self.zoo_client.ensure_path(self.file_path)
self.zoo_client.set(self.file_path, self.file_data.encode('utf-8'))
self.zoo_client.ensure_path(self.pointer_path)
self.zoo_client.set(self.pointer_path,
self.pointer_data.encode('utf-8'))
self.zoo_watcher = ZookeeperWatcher(hosts=self.hosts,
filepath=self.file_path,
pointer=False,
ensure=False,
valid_init=True)
def test_ping(self):
self.assertTrue(self.zoo_watcher.ping())
def test_get_file_contents(self):
pointer_zoo_watcher = ZookeeperWatcher(hosts=self.hosts,
filepath=self.pointer_path,
pointer=True,
ensure=False,
valid_init=True)
self.assertEqual(self.zoo_watcher.get_file_contents(), self.file_data)
self.assertEqual(pointer_zoo_watcher.get_file_contents(),
self.file_data)
self.assertEqual(pointer_zoo_watcher.get_file_contents(True),
self.pointer_data)
pointer_zoo_watcher.close()
def tearDown(self):
self.zoo_watcher.close()
self.zoo_client.ensure_path(self.file_path)
self.zoo_client.delete(self.file_path)
self.zoo_client.ensure_path(self.pointer_path)
self.zoo_client.delete(self.pointer_path)
self.zoo_client.stop()
self.zoo_client.close()
def test_get_file_contents(self):
pointer_zoo_watcher = ZookeeperWatcher(hosts=self.hosts,
filepath=self.pointer_path,
pointer=True,
ensure=False,
valid_init=True)
self.assertEqual(self.zoo_watcher.get_file_contents(), self.file_data)
self.assertEqual(pointer_zoo_watcher.get_file_contents(),
self.file_data)
self.assertEqual(pointer_zoo_watcher.get_file_contents(True),
self.pointer_data)
pointer_zoo_watcher.close()
zoo_watcher = ZookeeperWatcher(hosts,
file,
valid_handler=valid_file,
config_handler=change_file,
error_handler=error_file,
pointer=True,
ensure=True,
valid_init=valid)
else:
if poll:
zoo_watcher = ZookeeperWatcher(hosts, file, ensure=True)
elif event:
zoo_watcher = ZookeeperWatcher(hosts,
file,
valid_handler=valid_file,
config_handler=change_file,
error_handler=error_file,
valid_init=valid,
ensure=True)
print "Use a keyboard interrupt to shut down the process."
try:
while True:
if poll:
print "Valid File?", zoo_watcher.is_valid()
print "Contents:", zoo_watcher.get_file_contents()
sleep(sleep_time)
except:
pass
zoo_watcher.close()
# You can use any or all of these, polling + handlers, some handlers, etc
if pointer:
if poll:
zoo_watcher = ZookeeperWatcher(hosts, file, ensure=True,pointer=True)
elif event:
zoo_watcher = ZookeeperWatcher(hosts, file,
valid_handler=valid_file,
config_handler=change_file,
error_handler=error_file,
pointer=True, ensure=True, valid_init=valid)
else:
if poll:
zoo_watcher = ZookeeperWatcher(hosts, file, ensure=True)
elif event:
zoo_watcher = ZookeeperWatcher(hosts, file,
valid_handler=valid_file,
config_handler=change_file,
error_handler=error_file,
valid_init=valid, ensure=True)
print "Use a keyboard interrupt to shut down the process."
try:
while True:
if poll:
print "Valid File?", zoo_watcher.is_valid()
print "Contents:", zoo_watcher.get_file_contents()
sleep(sleep_time)
except:
pass
zoo_watcher.close()