class OpsDroid():
"""Root object for opsdroid."""
# pylint: disable=too-many-instance-attributes
# All are reasonable in this case.
instances = []
def __init__(self, config=None):
"""Start opsdroid."""
self.bot_name = 'opsdroid'
self._running = False
self.sys_status = 0
self.connectors = []
self.connector_tasks = []
self.eventloop = asyncio.get_event_loop()
if os.name != 'nt':
for sig in (signal.SIGINT, signal.SIGTERM):
self.eventloop.add_signal_handler(
sig, lambda: asyncio.ensure_future(self.handle_signal()))
self.eventloop.set_exception_handler(self.handle_async_exception)
self.skills = []
self.memory = Memory()
self.modules = {}
self.cron_task = None
self.loader = Loader(self)
if config is None:
self.config = {}
else:
self.config = config
self.stats = {
"messages_parsed": 0,
"webhooks_called": 0,
"total_response_time": 0,
"total_responses": 0,
}
self.web_server = None
self.stored_path = []
def __enter__(self):
"""Add self to existing instances."""
self.stored_path = copy.copy(sys.path)
if not self.__class__.instances:
self.__class__.instances.append(weakref.proxy(self))
else:
self.critical("opsdroid has already been started", 1)
return self
def __exit__(self, exc_type, exc_value, traceback):
"""Remove self from existing instances."""
sys.path = self.stored_path
self.__class__.instances = []
asyncio.set_event_loop(asyncio.new_event_loop())
@property
def default_connector(self):
"""Return the default connector."""
default_connector = None
for connector in self.connectors:
if "default" in connector.config and connector.config["default"]:
default_connector = connector
break
if default_connector is None:
default_connector = self.connectors[0]
return default_connector
def exit(self):
"""Exit application."""
_LOGGER.info(_("Exiting application with return code %s"),
str(self.sys_status))
sys.exit(self.sys_status)
def critical(self, error, code):
"""Exit due to unrecoverable error."""
self.sys_status = code
_LOGGER.critical(error)
self.exit()
@staticmethod
def handle_async_exception(loop, context):
"""Handle exceptions from async coroutines."""
_LOGGER.error(_("Caught exception"))
_LOGGER.error(context)
def is_running(self):
"""Check whether opsdroid is running."""
return self._running
async def handle_signal(self):
"""Handle signals."""
self._running = False
await self.unload()
def run(self):
"""Start the event loop."""
_LOGGER.info(_("Opsdroid is now running, press ctrl+c to exit."))
if not self.is_running():
self._running = True
while self.is_running():
pending = asyncio.Task.all_tasks()
with contextlib.suppress(asyncio.CancelledError):
self.eventloop.run_until_complete(asyncio.gather(*pending))
self.eventloop.stop()
self.eventloop.close()
_LOGGER.info(_("Bye!"))
self.exit()
else:
_LOGGER.error(_("Oops! Opsdroid is already running."))
def load(self):
"""Load modules."""
self.modules = self.loader.load_modules_from_config(self.config)
_LOGGER.debug(_("Loaded %i skills"), len(self.modules["skills"]))
self.setup_skills(self.modules["skills"])
self.web_server = Web(self)
self.web_server.setup_webhooks(self.skills)
self.train_parsers(self.modules["skills"])
if self.modules["databases"] is not None:
self.start_databases(self.modules["databases"])
self.start_connectors(self.modules["connectors"])
self.cron_task = self.eventloop.create_task(parse_crontab(self))
self.eventloop.create_task(self.web_server.start())
async def unload(self, future=None):
"""Stop the event loop."""
_LOGGER.info(_("Received stop signal, exiting."))
_LOGGER.info(_("Removing skills..."))
for skill in self.skills:
_LOGGER.info(_("Removed %s"), skill.config['name'])
self.skills.remove(skill)
for connector in self.connectors:
_LOGGER.info(_("Stopping connector %s..."), connector.name)
await connector.disconnect()
self.connectors.remove(connector)
_LOGGER.info(_("Stopped connector %s"), connector.name)
for database in self.memory.databases:
_LOGGER.info(_("Stopping database %s..."), database.name)
await database.disconnect()
self.memory.databases.remove(database)
_LOGGER.info(_("Stopped database %s"), database.name)
_LOGGER.info(_("Stopping web server..."))
await self.web_server.stop()
self.web_server = None
_LOGGER.info(_("Stopped web server"))
_LOGGER.info(_("Stopping cron..."))
self.cron_task.cancel()
self.cron_task = None
_LOGGER.info(_("Stopped cron"))
_LOGGER.info(_("Stopping pending tasks..."))
tasks = asyncio.Task.all_tasks()
for task in list(tasks):
if not task.done() and task is not asyncio.Task.current_task():
task.cancel()
_LOGGER.info(_("Stopped pending tasks"))
async def reload(self):
"""Reload opsdroid."""
await self.unload()
self.config = Loader.load_config_file([
"configuration.yaml", DEFAULT_CONFIG_PATH,
"/etc/opsdroid/configuration.yaml"
])
self.load()
def setup_skills(self, skills):
"""Call the setup function on the loaded skills.
Iterates through all the skills which have been loaded and runs
any setup functions which have been defined in the skill.
Args:
skills (list): A list of all the loaded skills.
"""
for skill in skills:
for func in skill["module"].__dict__.values():
if (isinstance(func, type) and issubclass(func, Skill)
and func != Skill):
skill_obj = func(self, skill['config'])
for name in skill_obj.__dir__():
# pylint: disable=broad-except
# Getting an attribute of
# an object might raise any type of exceptions, for
# example within an external library called from an
# object property. Since we are only interested in
# skill methods, we can safely ignore these.
try:
method = getattr(skill_obj, name)
except Exception:
continue
if hasattr(method, 'skill'):
self.skills.append(method)
continue
if hasattr(func, "skill"):
_LOGGER.warning(
_("Function based skills are deprecated "
"and will be removed in a future "
"release. Please use class-based skills "
"instead."))
func.config = skill['config']
self.skills.append(func)
with contextlib.suppress(AttributeError):
for skill in skills:
skill["module"].setup(self, self.config)
_LOGGER.warning(
_("<skill module>.setup() is deprecated and "
"will be removed in a future release. "
"Please use class-based skills instead."))
def train_parsers(self, skills):
"""Train the parsers."""
if "parsers" in self.config:
parsers = self.config["parsers"] or []
tasks = []
rasanlu = [p for p in parsers if p["name"] == "rasanlu"]
if len(rasanlu) == 1 and \
("enabled" not in rasanlu[0] or
rasanlu[0]["enabled"] is not False):
tasks.append(
asyncio.ensure_future(train_rasanlu(rasanlu[0], skills),
loop=self.eventloop))
self.eventloop.run_until_complete(
asyncio.gather(*tasks, loop=self.eventloop))
def start_connectors(self, connectors):
"""Start the connectors."""
for connector_module in connectors:
for _, cls in connector_module["module"].__dict__.items():
if isinstance(cls, type) and \
issubclass(cls, Connector) and\
cls is not Connector:
connector = cls(connector_module["config"], self)
self.connectors.append(connector)
if connectors:
for connector in self.connectors:
if self.eventloop.is_running():
self.eventloop.create_task(connector.connect())
else:
self.eventloop.run_until_complete(connector.connect())
for connector in self.connectors:
task = self.eventloop.create_task(connector.listen())
self.connector_tasks.append(task)
else:
self.critical("All connectors failed to load", 1)
def start_databases(self, databases):
"""Start the databases."""
if not databases:
_LOGGER.debug(databases)
_LOGGER.warning(_("All databases failed to load"))
for database_module in databases:
for name, cls in database_module["module"].__dict__.items():
if isinstance(cls, type) and \
issubclass(cls, Database) and \
cls is not Database:
_LOGGER.debug(_("Adding database: %s"), name)
database = cls(database_module["config"])
self.memory.databases.append(database)
self.eventloop.run_until_complete(database.connect())
async def run_skill(self, skill, config, message):
"""Execute a skill."""
# pylint: disable=broad-except
# We want to catch all exceptions coming from a skill module and not
# halt the application. If a skill throws an exception it just doesn't
# give a response to the user, so an error response should be given.
try:
if len(inspect.signature(skill).parameters.keys()) > 1:
await skill(self, config, message)
else:
await skill(message)
except Exception:
if message:
await message.respond(_("Whoops there has been an error"))
await message.respond(_("Check the log for details"))
_LOGGER.exception(_("Exception when running skill '%s' "),
str(config["name"]))
async def get_ranked_skills(self, skills, message):
"""Take a message and return a ranked list of matching skills."""
ranked_skills = []
ranked_skills += await parse_regex(self, skills, message)
if "parsers" in self.config:
_LOGGER.debug(_("Processing parsers..."))
parsers = self.config["parsers"] or []
dialogflow = [
p for p in parsers
if p["name"] == "dialogflow" or p["name"] == "apiai"
]
# Show deprecation message but parse message
# Once it stops working remove this bit
apiai = [p for p in parsers if p["name"] == "apiai"]
if apiai:
_LOGGER.warning(
_("Api.ai is now called Dialogflow. This "
"parser will stop working in the future "
"please swap: 'name: apiai' for "
"'name: dialogflow' in configuration.yaml"))
if len(dialogflow) == 1 and \
("enabled" not in dialogflow[0] or
dialogflow[0]["enabled"] is not False):
_LOGGER.debug(_("Checking dialogflow..."))
ranked_skills += \
await parse_dialogflow(self, skills,
message, dialogflow[0])
luisai = [p for p in parsers if p["name"] == "luisai"]
if len(luisai) == 1 and \
("enabled" not in luisai[0] or
luisai[0]["enabled"] is not False):
_LOGGER.debug("Checking luisai...")
ranked_skills += \
await parse_luisai(self, skills,
message, luisai[0])
recastai = [p for p in parsers if p["name"] == "recastai"]
if len(recastai) == 1 and \
("enabled" not in recastai[0] or
recastai[0]["enabled"] is not False):
_LOGGER.debug(_("Checking Recast.AI..."))
ranked_skills += \
await parse_recastai(self, skills,
message, recastai[0])
witai = [p for p in parsers if p["name"] == "witai"]
if len(witai) == 1 and \
("enabled" not in witai[0] or
witai[0]["enabled"] is not False):
_LOGGER.debug(_("Checking wit.ai..."))
ranked_skills += \
await parse_witai(self, skills,
message, witai[0])
rasanlu = [p for p in parsers if p["name"] == "rasanlu"]
if len(rasanlu) == 1 and \
("enabled" not in rasanlu[0] or
rasanlu[0]["enabled"] is not False):
_LOGGER.debug(_("Checking Rasa NLU..."))
ranked_skills += \
await parse_rasanlu(self, skills,
message, rasanlu[0])
return sorted(ranked_skills, key=lambda k: k["score"], reverse=True)
async def _constrain_skills(self, skills, message):
"""Remove skills with contraints which prohibit them from running.
Args:
skills (list): A list of skills to be checked for constraints.
message (opsdroid.events.Message): The message currently being
parsed.
Returns:
list: A list of the skills which were not constrained.
"""
for skill in skills:
for constraint in skill.constraints:
if not constraint(message):
skills.remove(skill)
return skills
async def parse(self, message):
"""Parse a string against all skills."""
self.stats["messages_parsed"] = self.stats["messages_parsed"] + 1
tasks = []
if message is not None and message.text.strip() != "":
_LOGGER.debug(_("Parsing input: %s"), message.text)
tasks.append(
self.eventloop.create_task(parse_always(self, message)))
unconstrained_skills = await self._constrain_skills(
self.skills, message)
ranked_skills = await self.get_ranked_skills(
unconstrained_skills, message)
if ranked_skills:
tasks.append(
self.eventloop.create_task(
self.run_skill(ranked_skills[0]["skill"],
ranked_skills[0]["config"], message)))
return tasks
class OpsDroid:
"""Root object for opsdroid."""
# pylint: disable=too-many-instance-attributes
# All are reasonable in this case.
instances = []
def __init__(self, config=None):
"""Start opsdroid."""
self.bot_name = "opsdroid"
self._running = False
self.sys_status = 0
self.connectors = []
self.connector_tasks = []
self.eventloop = asyncio.get_event_loop()
if os.name != "nt":
for sig in (signal.SIGINT, signal.SIGTERM):
self.eventloop.add_signal_handler(
sig, lambda: asyncio.ensure_future(self.handle_signal()))
self.eventloop.set_exception_handler(self.handle_async_exception)
self.skills = []
self.memory = Memory()
self.modules = {}
self.cron_task = None
self.loader = Loader(self)
if config is None:
self.config = {}
else:
self.config = config
self.stats = {
"messages_parsed": 0,
"webhooks_called": 0,
"total_response_time": 0,
"total_responses": 0,
}
self.web_server = None
self.stored_path = []
def __enter__(self):
"""Add self to existing instances."""
self.stored_path = copy.copy(sys.path)
if not self.__class__.instances:
self.__class__.instances.append(weakref.proxy(self))
else:
self.critical("opsdroid has already been started", 1)
return self
def __exit__(self, exc_type, exc_value, traceback):
"""Remove self from existing instances."""
sys.path = self.stored_path
self.__class__.instances = []
asyncio.set_event_loop(asyncio.new_event_loop())
@property
def default_connector(self):
"""Return the default connector.
Returns:
default_connector (connector object): A connector that was configured as default.
"""
default_connector = None
for connector in self.connectors:
if "default" in connector.config and connector.config["default"]:
default_connector = connector
break
if default_connector is None:
default_connector = self.connectors[0]
return default_connector
def exit(self):
"""Exit application."""
_LOGGER.info(_("Exiting application with return code %s."),
str(self.sys_status))
sys.exit(self.sys_status)
def critical(self, error, code):
"""Exit due to unrecoverable error.
Args:
error (String): Describes the error encountered.
code (Integer): Error code to exit with.
"""
self.sys_status = code
_LOGGER.critical(error)
self.exit()
@staticmethod
def handle_async_exception(loop, context):
"""Handle exceptions from async coroutines.
Args:
loop (asyncio.loop): Running loop that raised the exception.
context (String): Describes the exception encountered.
"""
print("ERROR: Unhandled exception in opsdroid, exiting...")
if "future" in context:
try: # pragma: nocover
context["future"].result()
# pylint: disable=broad-except
except Exception: # pragma: nocover
print("Caught exception")
print(context)
def is_running(self):
"""Check whether opsdroid is running."""
return self._running
async def handle_signal(self):
"""Handle signals."""
self._running = False
await self.unload()
def run(self):
"""Start the event loop."""
self.sync_load()
_LOGGER.info(_("Opsdroid is now running, press ctrl+c to exit."))
if not self.is_running():
self._running = True
while self.is_running():
pending = asyncio.Task.all_tasks()
with contextlib.suppress(asyncio.CancelledError):
self.eventloop.run_until_complete(asyncio.gather(*pending))
self.eventloop.stop()
self.eventloop.close()
_LOGGER.info(_("Bye!"))
self.exit()
else:
_LOGGER.error(_("Oops! Opsdroid is already running."))
def sync_load(self):
"""Run the load modules method synchronously."""
self.eventloop.run_until_complete(self.load())
async def load(self):
"""Load modules."""
self.modules = self.loader.load_modules_from_config(self.config)
_LOGGER.debug(_("Loaded %i skills."), len(self.modules["skills"]))
self.setup_skills(self.modules["skills"])
self.web_server = Web(self)
self.web_server.setup_webhooks(self.skills)
await self.train_parsers(self.modules["skills"])
if self.modules["databases"] is not None:
await self.start_databases(self.modules["databases"])
await self.start_connectors(self.modules["connectors"])
self.cron_task = self.eventloop.create_task(parse_crontab(self))
self.eventloop.create_task(self.web_server.start())
self.eventloop.create_task(self.parse(events.OpsdroidStarted()))
async def unload(self, future=None):
"""Stop the event loop."""
_LOGGER.info(_("Received stop signal, exiting."))
_LOGGER.info(_("Removing skills..."))
for skill in self.skills:
_LOGGER.info(_("Removed %s."), skill.config["name"])
self.skills.remove(skill)
for connector in self.connectors:
_LOGGER.info(_("Stopping connector %s..."), connector.name)
await connector.disconnect()
self.connectors.remove(connector)
_LOGGER.info(_("Stopped connector %s."), connector.name)
for database in self.memory.databases:
_LOGGER.info(_("Stopping database %s..."), database.name)
await database.disconnect()
self.memory.databases.remove(database)
_LOGGER.info(_("Stopped database %s."), database.name)
_LOGGER.info(_("Stopping web server..."))
await self.web_server.stop()
self.web_server = None
_LOGGER.info(_("Stopped web server."))
_LOGGER.info(_("Stopping cron..."))
self.cron_task.cancel()
self.cron_task = None
_LOGGER.info(_("Stopped cron"))
_LOGGER.info(_("Stopping pending tasks..."))
tasks = asyncio.Task.all_tasks()
for task in list(tasks):
if not task.done() and task is not asyncio.Task.current_task():
task.cancel()
_LOGGER.info(_("Stopped pending tasks."))
async def reload(self):
"""Reload opsdroid."""
await self.unload()
self.config = load_config_file([
"configuration.yaml",
DEFAULT_CONFIG_PATH,
"/etc/opsdroid/configuration.yaml",
])
await self.load()
def setup_skills(self, skills):
"""Call the setup function on the loaded skills.
Iterates through all the skills which have been loaded and runs
any setup functions which have been defined in the skill.
Args:
skills (list): A list of all the loaded skills.
"""
for skill in skills:
for func in skill["module"].__dict__.values():
if isinstance(func, type) and issubclass(
func, Skill) and func != Skill:
skill_obj = func(self, skill["config"])
for name in skill_obj.__dir__():
# pylint: disable=broad-except
# Getting an attribute of
# an object might raise any type of exceptions, for
# example within an external library called from an
# object property. Since we are only interested in
# skill methods, we can safely ignore these.
try:
method = getattr(skill_obj, name)
except Exception:
continue
if hasattr(method, "skill"):
self.skills.append(method)
continue
if hasattr(func, "skill"):
func.config = skill["config"]
self.skills.append(func)
with contextlib.suppress(AttributeError):
for skill in skills:
skill["module"].setup(self, self.config)
async def train_parsers(self, skills):
"""Train the parsers.
Args:
skills (list): A list of all the loaded skills.
"""
if "parsers" in self.config:
parsers = self.config["parsers"] or {}
rasanlu = parsers.get("rasanlu")
if rasanlu and rasanlu["enabled"]:
await train_rasanlu(rasanlu, skills)
async def start_connectors(self, connectors):
"""Start the connectors.
Iterates through all the connectors parsed in the argument,
spawns all that can be loaded, and keeps them open (listening).
Args:
connectors (list): A list of all the connectors to be loaded.
"""
for connector_module in connectors:
for _, cls in connector_module["module"].__dict__.items():
if (isinstance(cls, type) and issubclass(cls, Connector)
and cls is not Connector):
connector = cls(connector_module["config"], self)
self.connectors.append(connector)
if connectors:
for connector in self.connectors:
await self.eventloop.create_task(connector.connect())
for connector in self.connectors:
task = self.eventloop.create_task(connector.listen())
self.connector_tasks.append(task)
else:
self.critical("All connectors failed to load.", 1)
# pylint: disable=W0640
@property
def _connector_names(self): # noqa: D401
"""Mapping of names to connector instances.
Returns:
names (list): A list of the names of connectors that are running.
"""
if not self.connectors:
raise ValueError("No connectors have been started")
names = {}
for connector in self.connectors:
name = connector.config.get("name", connector.name)
# Deduplicate any names
if name in names:
# Calculate the number of keys in names which start with name.
n_key = len(list(filter(lambda x: x.startswith(name), names)))
name += "_{}".format(n_key)
names[name] = connector
return names
async def start_databases(self, databases):
"""Start the databases.
Iterates through all the database modules parsed
in the argument, connects and starts them.
Args:
databases (list): A list of all database modules to be started.
"""
if not databases:
_LOGGER.debug(databases)
_LOGGER.warning(_("All databases failed to load."))
for database_module in databases:
for name, cls in database_module["module"].__dict__.items():
if (isinstance(cls, type) and issubclass(cls, Database)
and cls is not Database):
_LOGGER.debug(_("Adding database: %s."), name)
database = cls(database_module["config"], opsdroid=self)
self.memory.databases.append(database)
await database.connect()
async def run_skill(self, skill, config, event):
"""Execute a skill.
Attempts to run the skill parsed and provides other arguments to the skill if necessary.
Also handles the exception encountered if th e
Args:
skill: name of the skill to be run.
config: The configuration the skill must be loaded in.
event: Message/event to be parsed to the chat service.
"""
# pylint: disable=broad-except
# We want to catch all exceptions coming from a skill module and not
# halt the application. If a skill throws an exception it just doesn't
# give a response to the user, so an error response should be given.
try:
if len(inspect.signature(skill).parameters.keys()) > 1:
return await skill(self, config, event)
else:
return await skill(event)
except Exception:
_LOGGER.exception(_("Exception when running skill '%s'."),
str(config["name"]))
if event:
await event.respond(
events.Message(_("Whoops there has been an error.")))
await event.respond(
events.Message(_("Check the log for details.")))
async def get_ranked_skills(self, skills, message):
"""Take a message and return a ranked list of matching skills.
Args:
skills (list): List of all available skills.
message (string): Context message to base the ranking of skills on.
Returns:
ranked_skills (list): List of all available skills sorted and ranked based on the score they muster when matched against the message parsed.
"""
ranked_skills = []
if isinstance(message, events.Message):
ranked_skills += await parse_regex(self, skills, message)
ranked_skills += await parse_format(self, skills, message)
if "parsers" in self.config:
_LOGGER.debug(_("Processing parsers..."))
parsers = self.config["parsers"] or {}
dialogflow = parsers.get("dialogflow")
if dialogflow and dialogflow["enabled"]:
_LOGGER.debug(_("Checking dialogflow..."))
ranked_skills += await parse_dialogflow(
self, skills, message, dialogflow)
luisai = parsers.get("luisai")
if luisai and luisai["enabled"]:
_LOGGER.debug(_("Checking luisai..."))
ranked_skills += await parse_luisai(self, skills, message,
luisai)
sapcai = parsers.get("sapcai")
if sapcai and sapcai["enabled"]:
_LOGGER.debug(_("Checking SAPCAI..."))
ranked_skills += await parse_sapcai(self, skills, message,
sapcai)
witai = parsers.get("witai")
if witai and witai["enabled"]:
_LOGGER.debug(_("Checking wit.ai..."))
ranked_skills += await parse_witai(self, skills, message,
witai)
watson = parsers.get("watson")
if watson and watson["enabled"]:
_LOGGER.debug(_("Checking IBM Watson..."))
ranked_skills += await parse_watson(self, skills, message,
watson)
rasanlu = parsers.get("rasanlu")
if rasanlu and rasanlu["enabled"]:
_LOGGER.debug(_("Checking Rasa NLU..."))
ranked_skills += await parse_rasanlu(self, skills, message,
rasanlu)
return sorted(ranked_skills, key=lambda k: k["score"], reverse=True)
async def _constrain_skills(self, skills, message):
"""Remove skills with contraints which prohibit them from running.
Args:
skills (list): A list of skills to be checked for constraints.
message (opsdroid.events.Message): The message currently being
parsed.
Returns:
list: A list of the skills which were not constrained.
"""
return [
skill for skill in skills if all(
constraint(message) for constraint in skill.constraints)
]
async def parse(self, event):
"""Parse a string against all skills.
Args:
event (String): The string to parsed against all available skills.
Returns:
tasks (list): Task that tells the skill which best matches the parsed event.
"""
self.stats["messages_parsed"] = self.stats["messages_parsed"] + 1
tasks = []
tasks.append(self.eventloop.create_task(parse_always(self, event)))
tasks.append(self.eventloop.create_task(parse_event_type(self, event)))
if isinstance(event, events.Message):
_LOGGER.debug(_("Parsing input: %s."), event)
unconstrained_skills = await self._constrain_skills(
self.skills, event)
ranked_skills = await self.get_ranked_skills(
unconstrained_skills, event)
if ranked_skills:
tasks.append(
self.eventloop.create_task(
self.run_skill(
ranked_skills[0]["skill"],
ranked_skills[0]["config"],
ranked_skills[0]["message"],
)))
await asyncio.gather(*tasks)
return tasks
async def send(self, event):
"""Send an event.
If ``event.connector`` is not set this method will use
`OpsDroid.default_connector`. If ``event.connector`` is a string, it
will be resolved to the name of the connectors configured in this
instance.
Args:
event (opsdroid.events.Event): The event to send.
"""
if isinstance(event.connector, str):
event.connector = self._connector_names[event.connector]
if not event.connector:
event.connector = self.default_connector
return await event.connector.send(event)
class OpsDroid():
"""Root object for opsdroid."""
# pylint: disable=too-many-instance-attributes
# All are reasonable in this case.
instances = []
def __init__(self, config=None):
"""Start opsdroid."""
self.bot_name = 'opsdroid'
self._running = False
self.sys_status = 0
self.connectors = []
self.connector_tasks = []
self.eventloop = asyncio.get_event_loop()
if os.name != 'nt':
for sig in (signal.SIGINT, signal.SIGTERM):
self.eventloop.add_signal_handler(
sig,
lambda: asyncio.ensure_future(self.handle_signal()))
self.eventloop.set_exception_handler(self.handle_async_exception)
self.skills = []
self.memory = Memory()
self.modules = {}
self.cron_task = None
self.loader = Loader(self)
if config is None:
self.config = {}
else:
self.config = config
self.stats = {
"messages_parsed": 0,
"webhooks_called": 0,
"total_response_time": 0,
"total_responses": 0,
}
self.web_server = None
self.stored_path = []
def __enter__(self):
"""Add self to existing instances."""
self.stored_path = copy.copy(sys.path)
if not self.__class__.instances:
self.__class__.instances.append(weakref.proxy(self))
else:
self.critical("opsdroid has already been started", 1)
return self
def __exit__(self, exc_type, exc_value, traceback):
"""Remove self from existing instances."""
sys.path = self.stored_path
self.__class__.instances = []
asyncio.set_event_loop(asyncio.new_event_loop())
@property
def default_connector(self):
"""Return the default connector."""
default_connector = None
for connector in self.connectors:
if "default" in connector.config and connector.config["default"]:
default_connector = connector
break
if default_connector is None:
default_connector = self.connectors[0]
return default_connector
def exit(self):
"""Exit application."""
_LOGGER.info(_("Exiting application with return code %s"),
str(self.sys_status))
sys.exit(self.sys_status)
def critical(self, error, code):
"""Exit due to unrecoverable error."""
self.sys_status = code
_LOGGER.critical(error)
self.exit()
@staticmethod
def handle_async_exception(loop, context):
"""Handle exceptions from async coroutines."""
_LOGGER.error(_("Caught exception"))
_LOGGER.error(context)
def is_running(self):
"""Check whether opsdroid is running."""
return self._running
async def handle_signal(self):
"""Handle signals."""
self._running = False
await self.unload()
def run(self):
"""Start the event loop."""
_LOGGER.info(_("Opsdroid is now running, press ctrl+c to exit."))
if not self.is_running():
self._running = True
while self.is_running():
pending = asyncio.Task.all_tasks()
with contextlib.suppress(asyncio.CancelledError):
self.eventloop.run_until_complete(asyncio.gather(*pending))
self.eventloop.stop()
self.eventloop.close()
_LOGGER.info(_("Bye!"))
self.exit()
else:
_LOGGER.error(_("Oops! Opsdroid is already running."))
def load(self):
"""Load modules."""
self.modules = self.loader.load_modules_from_config(self.config)
_LOGGER.debug(_("Loaded %i skills"), len(self.modules["skills"]))
self.setup_skills(self.modules["skills"])
self.web_server = Web(self)
self.web_server.setup_webhooks(self.skills)
self.train_parsers(self.modules["skills"])
if self.modules["databases"] is not None:
self.start_databases(self.modules["databases"])
self.start_connectors(self.modules["connectors"])
self.cron_task = self.eventloop.create_task(parse_crontab(self))
self.eventloop.create_task(self.web_server.start())
async def unload(self, future=None):
"""Stop the event loop."""
_LOGGER.info(_("Received stop signal, exiting."))
_LOGGER.info(_("Removing skills..."))
for skill in self.skills:
_LOGGER.info(_("Removed %s"), skill.config['name'])
self.skills.remove(skill)
for connector in self.connectors:
_LOGGER.info(_("Stopping connector %s..."), connector.name)
await connector.disconnect()
self.connectors.remove(connector)
_LOGGER.info(_("Stopped connector %s"), connector.name)
for database in self.memory.databases:
_LOGGER.info(_("Stopping database %s..."), database.name)
await database.disconnect()
self.memory.databases.remove(database)
_LOGGER.info(_("Stopped database %s"), database.name)
_LOGGER.info(_("Stopping web server..."))
await self.web_server.stop()
self.web_server = None
_LOGGER.info(_("Stopped web server"))
_LOGGER.info(_("Stopping cron..."))
self.cron_task.cancel()
self.cron_task = None
_LOGGER.info(_("Stopped cron"))
_LOGGER.info(_("Stopping pending tasks..."))
tasks = asyncio.Task.all_tasks()
for task in list(tasks):
if not task.done() and task is not asyncio.Task.current_task():
task.cancel()
_LOGGER.info(_("Stopped pending tasks"))
async def reload(self):
"""Reload opsdroid."""
await self.unload()
self.config = Loader.load_config_file([
"configuration.yaml",
DEFAULT_CONFIG_PATH,
"/etc/opsdroid/configuration.yaml"
])
self.load()
def setup_skills(self, skills):
"""Call the setup function on the loaded skills.
Iterates through all the skills which have been loaded and runs
any setup functions which have been defined in the skill.
Args:
skills (list): A list of all the loaded skills.
"""
for skill in skills:
for func in skill["module"].__dict__.values():
if (isinstance(func, type) and
issubclass(func, Skill) and
func != Skill):
skill_obj = func(self, skill['config'])
for name in skill_obj.__dir__():
# pylint: disable=broad-except
# Getting an attribute of
# an object might raise any type of exceptions, for
# example within an external library called from an
# object property. Since we are only interested in
# skill methods, we can safely ignore these.
try:
method = getattr(skill_obj, name)
except Exception:
continue
if hasattr(method, 'skill'):
self.skills.append(method)
continue
if hasattr(func, "skill"):
_LOGGER.warning(_("Function based skills are deprecated "
"and will be removed in a future "
"release. Please use class-based skills "
"instead."))
func.config = skill['config']
self.skills.append(func)
with contextlib.suppress(AttributeError):
for skill in skills:
skill["module"].setup(self, self.config)
_LOGGER.warning(_("<skill module>.setup() is deprecated and "
"will be removed in a future release. "
"Please use class-based skills instead."))
def train_parsers(self, skills):
"""Train the parsers."""
if "parsers" in self.config:
parsers = self.config["parsers"] or []
tasks = []
rasanlu = [p for p in parsers if p["name"] == "rasanlu"]
if len(rasanlu) == 1 and \
("enabled" not in rasanlu[0] or
rasanlu[0]["enabled"] is not False):
tasks.append(
asyncio.ensure_future(
train_rasanlu(rasanlu[0], skills),
loop=self.eventloop))
self.eventloop.run_until_complete(
asyncio.gather(*tasks, loop=self.eventloop))
def start_connectors(self, connectors):
"""Start the connectors."""
for connector_module in connectors:
for _, cls in connector_module["module"].__dict__.items():
if isinstance(cls, type) and \
issubclass(cls, Connector) and\
cls is not Connector:
connector = cls(connector_module["config"], self)
self.connectors.append(connector)
if connectors:
for connector in self.connectors:
if self.eventloop.is_running():
self.eventloop.create_task(connector.connect())
else:
self.eventloop.run_until_complete(connector.connect())
for connector in self.connectors:
task = self.eventloop.create_task(connector.listen())
self.connector_tasks.append(task)
else:
self.critical("All connectors failed to load", 1)
# pylint: disable=W0640
@property
def _connector_names(self): # noqa: D401
"""Mapping of names to connector instances."""
if not self.connectors:
raise ValueError("No connectors have been started")
names = {}
for connector in self.connectors:
name = connector.config.get("name", connector.name)
# Deduplicate any names
if name in names:
# Calculate the number of keys in names which start with name.
n_key = len(list(filter(lambda x: x.startswith(name), names)))
name += "_{}".format(n_key)
names[name] = connector
return names
def start_databases(self, databases):
"""Start the databases."""
if not databases:
_LOGGER.debug(databases)
_LOGGER.warning(_("All databases failed to load"))
for database_module in databases:
for name, cls in database_module["module"].__dict__.items():
if isinstance(cls, type) and \
issubclass(cls, Database) and \
cls is not Database:
_LOGGER.debug(_("Adding database: %s"), name)
database = cls(database_module["config"])
self.memory.databases.append(database)
self.eventloop.run_until_complete(database.connect())
async def run_skill(self, skill, config, message):
"""Execute a skill."""
# pylint: disable=broad-except
# We want to catch all exceptions coming from a skill module and not
# halt the application. If a skill throws an exception it just doesn't
# give a response to the user, so an error response should be given.
try:
if len(inspect.signature(skill).parameters.keys()) > 1:
await skill(self, config, message)
else:
await skill(message)
except Exception:
if message:
await message.respond(_("Whoops there has been an error"))
await message.respond(_("Check the log for details"))
_LOGGER.exception(_("Exception when running skill '%s' "),
str(config["name"]))
async def get_ranked_skills(self, skills, message):
"""Take a message and return a ranked list of matching skills."""
ranked_skills = []
ranked_skills += await parse_regex(self, skills, message)
if "parsers" in self.config:
_LOGGER.debug(_("Processing parsers..."))
parsers = self.config["parsers"] or []
dialogflow = [p for p in parsers if p["name"] == "dialogflow"
or p["name"] == "apiai"]
# Show deprecation message but parse message
# Once it stops working remove this bit
apiai = [p for p in parsers if p["name"] == "apiai"]
if apiai:
_LOGGER.warning(_("Api.ai is now called Dialogflow. This "
"parser will stop working in the future "
"please swap: 'name: apiai' for "
"'name: dialogflow' in configuration.yaml"))
if len(dialogflow) == 1 and \
("enabled" not in dialogflow[0] or
dialogflow[0]["enabled"] is not False):
_LOGGER.debug(_("Checking dialogflow..."))
ranked_skills += \
await parse_dialogflow(self, skills,
message, dialogflow[0])
luisai = [p for p in parsers if p["name"] == "luisai"]
if len(luisai) == 1 and \
("enabled" not in luisai[0] or
luisai[0]["enabled"] is not False):
_LOGGER.debug("Checking luisai...")
ranked_skills += \
await parse_luisai(self, skills,
message, luisai[0])
sapcai = [p for p in parsers if p["name"] == "sapcai"]
if len(sapcai) == 1 and \
("enabled" not in sapcai[0] or
sapcai[0]["enabled"] is not False):
_LOGGER.debug(_("Checking Recast.AI..."))
ranked_skills += \
await parse_sapcai(self, skills,
message, sapcai[0])
witai = [p for p in parsers if p["name"] == "witai"]
if len(witai) == 1 and \
("enabled" not in witai[0] or
witai[0]["enabled"] is not False):
_LOGGER.debug(_("Checking wit.ai..."))
ranked_skills += \
await parse_witai(self, skills,
message, witai[0])
rasanlu = [p for p in parsers if p["name"] == "rasanlu"]
if len(rasanlu) == 1 and \
("enabled" not in rasanlu[0] or
rasanlu[0]["enabled"] is not False):
_LOGGER.debug(_("Checking Rasa NLU..."))
ranked_skills += \
await parse_rasanlu(self, skills,
message, rasanlu[0])
return sorted(ranked_skills, key=lambda k: k["score"], reverse=True)
async def _constrain_skills(self, skills, message):
"""Remove skills with contraints which prohibit them from running.
Args:
skills (list): A list of skills to be checked for constraints.
message (opsdroid.events.Message): The message currently being
parsed.
Returns:
list: A list of the skills which were not constrained.
"""
return [
skill for skill in skills if all(
constraint(message)
for constraint in skill.constraints
)
]
async def parse(self, message):
"""Parse a string against all skills."""
self.stats["messages_parsed"] = self.stats["messages_parsed"] + 1
tasks = []
if message is not None:
if str(message.text).strip():
_LOGGER.debug(_("Parsing input: %s"), message.text)
tasks.append(
self.eventloop.create_task(parse_always(self, message)))
unconstrained_skills = await self._constrain_skills(
self.skills, message)
ranked_skills = await self.get_ranked_skills(
unconstrained_skills, message)
if ranked_skills:
tasks.append(
self.eventloop.create_task(
self.run_skill(ranked_skills[0]["skill"],
ranked_skills[0]["config"],
ranked_skills[0]["message"])))
return tasks
async def send(self, event):
"""Send an event.
If ``event.connector`` is not set this method will use
`OpsDroid.default_connector`. If ``event.connector`` is a string, it
will be resolved to the name of the connectors configured in this
instance.
Args:
event (opsdroid.events.Event): The event to send.
"""
if isinstance(event.connector, str):
event.connector = self._connector_names[event.connector]
if not event.connector:
event.connector = self.default_connector
return await event.connector.send(event)
