def broadcast_task(broadcast_id):
with DatabaseSession():
broadcast = Broadcast.get_by(id=broadcast_id, single=True)
# The broadcast entry could be delted by user
if not broadcast:
return
# Either broadcast in progress or already sent
if broadcast.status != BroadcastStatusEnum.QUEUED:
return
# The user may have changed the broadcasting time, ignore it as it
# should be automatically rescheduled.
if broadcast.scheduled_time >= datetime.now():
return
broadcast.status = BroadcastStatusEnum.SENDING
try:
DatabaseManager.commit()
except (InvalidRequestError, IntegrityError):
# The broadcast task have changed during our modification, retry.
DatabaseManager.rollback()
return broadcast_task(broadcast_id)
# Do the actually broadcast
bot = Bot.get_by(id=broadcast.bot_id,
account_id=broadcast.account_id,
single=True)
# Bot may have been deleted
if not bot:
return
messages = [Message.FromDict(m) for m in broadcast.messages]
broadcast_message_async(bot, messages)
def step(self, bot, user, user_input=None, input_vars=None):
"""Main function for executing a node."""
try: # pylint: disable=R0101
now = datetime.datetime.now()
if user.session is None:
if user_input:
user_input.disable_jump()
user.goto(Bot.START_STABLE_ID)
g.user = user
if user_input:
if config.STORE_CONVERSATION:
Conversation(bot_id=user.bot_id, user_id=user.id,
sender_enum=SenderEnum.Human,
msg=user_input).add()
# Parse audio as text if there are audio payload
user_input.ParseAudioAsText(user)
user_input = user_input.RunInputTransformation()
# If there was admin interaction, and admin_interaction_timeout
# haven't reached yet, do not run engine.
if (bot.admin_interaction_timeout > 0 and
((now - user.last_admin_seen).total_seconds() <
bot.admin_interaction_timeout)):
return
# Check has been idle for too long, reset it's state if yes.
if (bot.session_timeout > 0 and
((now - user.last_seen).total_seconds() >
bot.session_timeout)):
user.last_seen = datetime.datetime.now()
user.goto(Bot.ROOT_STABLE_ID)
if user_input and user_input.jump():
node = Node.get_by(stable_id=user_input.jump_node_id,
bot_id=bot.id, single=True)
# Check if the node belongs to current bot
if node is None:
logger.critical('Invalid jump node_id %s' %
user_input.jump_node_id)
# If payload button is pressed, we need to jump to the
# corresponding node if payload's node_id != current_node_id
elif user_input.jump_node_id != user.session.node_id:
user.goto(user_input.jump_node_id)
user.session.message_sent = True
node = Node.get_by(stable_id=user.session.node_id, bot_id=bot.id,
eager=['content_module', 'parser_module'],
single=True)
g.node = node
if node is None:
logger.critical('Invalid node_id %s' % user.session.node_id)
user.goto(Bot.ROOT_STABLE_ID)
user.session.message_sent = True
return self.step(bot, user, user_input)
track(TrackingInfo.Pageview(user.platform_user_ident,
'/%s' % node.stable_id))
# Shared global variables
global_variables = {
'user': user.to_json(),
'bot_id': bot.id
}
if not user.session.message_sent:
env = {
'platform_type': SupportedPlatform(
user.platform.type_enum.value)
}
# Prepare input variables
input_vars = input_vars or {}
input_vars.update(global_variables)
# TODO(aitjcize): figure out how to deal with cm exceptions
cm = node.content_module.get_module()
# Send message
messages = cm.run(node.content_config, env, input_vars)
messaging.send_message(user, messages)
user.session.message_sent = True
# Store InputTransformation in session
user.session.input_transformation = InputTransformation.get()
if not node.expect_input:
# There are no parser module, which means we are at end of
# subgraph.
if node.parser_module is None:
user.goto(Bot.ROOT_STABLE_ID)
user.session.message_sent = True
return
elif node.parser_module.id == PASSTHROUGH_MODULE_ID:
return self.step(bot, user)
else:
raise RuntimeError('Node `%s\' with parser module '
'not expecting input' % node)
else:
# We are already at root node and there is no user input.
# Display root node again.
if not user_input and node.stable_id == Bot.ROOT_STABLE_ID:
user.session.message_sent = False
return self.step(bot, user, user_input)
# No parser module associate with this node, go back to root
# node.
if node.parser_module is None:
user.goto(Bot.ROOT_STABLE_ID)
user.session.message_sent = True
# Run at root instead, so disable jump
user_input.disable_jump()
return self.step(bot, user, user_input)
if (not user_input and
node.parser_module.id != PASSTHROUGH_MODULE_ID):
raise RuntimeError('no user input when running parser')
result, variables = self.run_parser_module(
node, user, user_input, global_variables, False)
# Node parser failed, try root parser:
if result.errored and node.stable_id != Bot.ROOT_STABLE_ID:
root_result, root_variables = self.run_parser_module(
bot.root_node, user, user_input, global_variables,
True)
# If root paser matched, use root_parser result as result.
if not root_result.errored:
result = root_result
variables = root_variables
if result.ack_message:
self.send_ack_message(user, result.ack_message, variables)
# end_node_id may be None, either there is a bug or parser
# module decide not to move at all.
if result.end_node_id:
user.goto(result.end_node_id)
# If we are going back the same node, assume there is an
# error and we want to retry. don't send message in this
# case.
if (result.end_node_id == node.stable_id and
node.stable_id != Bot.ROOT_STABLE_ID and
result.skip_content_module):
user.session.message_sent = True
return
else:
# There is no link, replay current node.
user.session.message_sent = False
# Run next content module
return self.step(bot, user, None, variables)
except Exception as e:
logger.exception(e)
# Rollback when error happens, so user won't get stuck in some
# weird state.
DatabaseManager.rollback()
finally:
user.last_seen = datetime.datetime.now()
DatabaseManager.commit()