def test_create(self, event_loop):
"""Smoketest that we can create a PubPen object"""
pubpen = PubPen(event_loop)
# Test internals were setup
assert len(pubpen._event_handlers) == 0
assert len(pubpen._event_list) == 0
def test_create_with_event_list(self, event_loop):
"""Test that creating a PubPen with an event_list stores the event_list"""
pubpen = PubPen(event_loop, ['one', 'two'])
# Test internals of saving the event_list worked
assert len(pubpen._event_handlers) == 0
assert len(pubpen._event_list) == 2
assert 'one' in pubpen._event_list
assert 'two' in pubpen._event_list
def pubpen_multi_callback(event_loop):
pubpen = PubPen(event_loop)
# Fake up the internal data structures that unsubscribe uses
pubpen._subscriptions[0] = 'test_event1'
pubpen._subscriptions[1] = 'test_event1'
pubpen._subscriptions[2] = 'test_event1'
pubpen._event_handlers['test_event1'][0] = 'handler1'
pubpen._event_handlers['test_event1'][1] = 'handler2'
pubpen._event_handlers['test_event1'][2] = 'handler3'
return pubpen
async def start():
if PY37:
loop = asyncio.get_running_loop()
else:
loop = asyncio.get_event_loop()
pubpen = PubPen(loop)
server = Server(pubpen)
# We create a client but never call it directly. Instead, it subscribes to the `server_msg`
# event and does something whenever that event occurs.
client = Client(pubpen)
await server.heartbeat()
def run(self):
"""
Run the program. This is the main entrypoint to the magnate client
"""
# Create the statedir if it doesn't exist
if not os.path.exists(self.cfg['state_dir']):
os.makedirs(self.cfg['state_dir'])
twiggy.dict_config(self.cfg['logging'])
# Base data attributes
self._load_data_definitions()
ui_plugins = load('magnate.ui', subclasses=UserInterface)
for UIClass in ui_plugins: #pylint: disable=invalid-name
if UIClass.__module__.startswith('magnate.ui.{}'.format(
self.cfg['ui_plugin'])):
break
else:
print('Unknown user ui: {}'.format(self.cfg['ui_plugin']))
return 1
# Try using uvloop instead of the asyncio event loop
if self.cfg['use_uvloop']:
try:
import uvloop
except Exception:
print(
'Could not import uvloop. Falling back on asyncio event loop'
)
try:
asyncio.set_event_loop_policy(uvloop.EventLoopPolicy())
except Exception:
print(
'Could not set uvloop to be the event loop. Falling back on asyncio event loop'
)
loop = asyncio.get_event_loop()
self.pubpen = PubPen(loop)
self._setup_markets()
self.dispatcher = Dispatcher(self, self.markets)
# UIClass is always available because we'd have already returned (via
# the for-else) if UIClass was not defined
try:
user_interface = UIClass(self.pubpen, self.cfg['ui_args']) # pylint: disable=undefined-loop-variable
return user_interface.run()
except Exception as e:
mlog.trace('error').error(
'Exception raised while running the user interface')
raise
async def start():
if PY37:
loop = asyncio.get_running_loop()
else:
loop = asyncio.get_event_loop()
queue = asyncio.Queue()
loop.add_reader(sys.stdin, get_stdin_data, loop, queue)
pubpen = PubPen(loop)
server = Server(pubpen)
client = Client(pubpen, queue)
await asyncio.wait((client.await_input(), server.heartbeat()))
def pubpen_handlers_dealloc(event_loop):
pubpen = PubPen(event_loop)
pubpen.loop = mock.MagicMock()
pubpen._subscriptions[0] = 'test_event1'
pubpen._subscriptions[1] = 'test_event1'
# In the real code, we store a weakref to the handlers. We use lambda
# here to wrape the actual handler once to emulate the aspects of the
# weakref that are important to this test
pubpen._event_handlers['test_event1'][0] = lambda: handler1
# But this one represents a weakref where the target has been deallocated.
# In that case, calling the weakref returns None
pubpen._event_handlers['test_event1'][1] = lambda: None
return pubpen
def pubpen(event_loop):
pubpen = PubPen(event_loop)
pubpen.loop = mock.MagicMock()
# In the real code, we store a weakref to the handlers. We use lambda
# here to wrape the actual handler once to emulate the aspects of the
# weakref that are important to this test
pubpen._event_handlers['test_event1'][0] = lambda: handler1
pubpen._event_handlers['test_event2'][1] = lambda: handler2
pubpen._event_handlers['test_event2'][2] = lambda: handler3
return pubpen
def pubpen_handlers_partially_removed(event_loop):
"""
The handler has been deallocated (because it's a weakref) but it's only
been removed from the _subscriptions list already.
"""
pubpen = PubPen(event_loop)
pubpen.loop = mock.MagicMock()
pubpen._subscriptions[0] = 'test_event1'
# In the real code, we store a weakref to the handlers. We use lambda
# here to wrape the actual handler once to emulate the aspects of the
# weakref that are important to this test
pubpen._event_handlers['test_event1'][0] = lambda: handler1
# But this one represents a weakref where the target has been deallocated.
# In that case, calling the weakref returns None
pubpen._event_handlers['test_event1'][1] = lambda: None
return pubpen
async def start():
if PY37:
loop = asyncio.get_running_loop()
else:
loop = asyncio.get_event_loop()
pubpen = PubPen(loop)
with Display(pubpen) as display:
try:
# try Client first
connection = loop.create_unix_connection(
partial(TalkProtocol, pubpen), PATH)
await connection
except (ConnectionRefusedError, FileNotFoundError):
# server
connection = loop.create_unix_server(partial(TalkProtocol, pubpen),
PATH)
await connection
while True:
await display.get_ch()
def pubpen(event_loop):
pubpen = PubPen(event_loop)
return pubpen
def pubpen_partially_dealloc(event_loop):
"""The event handler has been partially removed already."""
pubpen = PubPen(event_loop)
pubpen._subscriptions[0] = 'test_event1'
return pubpen
def pubpen_predefined(event_loop):
pubpen = PubPen(event_loop, event_list=['test_event1', 'test_event2'])
pubpen.loop = mock.MagicMock()
return pubpen
async def setup_db(_app, loop):
await sqlite.make_table()
_app.event = PubPen(loop)
def pubpen(request, event_loop):
pubpen = PubPen(event_loop)
return pubpen
def pubpen_predefined(event_loop):
pubpen = PubPen(event_loop, event_list=['test_event1', 'test_event2'])
return pubpen
def data_received(self, data):
self.pubpen.publish('incoming', data.decode('utf-8', errors='replace'),
"<you>")
def error_received(self, exc):
self.pubpen.publish('error', exc)
def connection_lost(self, exc):
self.pubpen.publish('conn_lost', exc)
self.pubpen.loop.stop()
if __name__ == '__main__':
loop = asyncio.get_event_loop()
pubpen = PubPen(loop)
with Display(pubpen) as display:
try:
# try Client first
connection = loop.create_unix_connection(
partial(TalkProtocol, pubpen), PATH)
loop.run_until_complete(connection)
except ConnectionRefusedError:
# server
connection = loop.create_unix_server(partial(TalkProtocol, pubpen),
PATH)
loop.run_until_complete(connection)
task = loop.create_task(display.get_ch())
loop.run_forever()
def pubpen_emit(event_loop):
pubpen = PubPen(event_loop)
pubpen.publish = mock.MagicMock()
return pubpen