def __split_group_message(self, msg: ReliableMessage,
members: List[ID]) -> Optional[Content]:
""" Split group message for each member """
messages = msg.split(members=members)
success_list = []
failed_list = []
for item in messages:
if item.delegate is None:
item.delegate = msg.delegate
if self.__forward_group_message(msg=item):
success_list.append(item.receiver)
else:
failed_list.append(item.receiver)
response = ReceiptCommand(message='Group message delivering')
if len(success_list) > 0:
response['success'] = ID.revert(success_list)
if len(failed_list) > 0:
response['failed'] = ID.revert(failed_list)
# failed to get keys for this members,
# query from sender by invite members
sender = msg.sender
group = msg.receiver
cmd = GroupCommand.invite(group=group, members=failed_list)
self.send_content(sender=None, receiver=sender, content=cmd)
return response
def execute(self, cmd: Command, msg: ReliableMessage) -> Optional[Content]:
assert isinstance(cmd, InviteCommand) or isinstance(cmd, ResetCommand), 'group command error: %s' % cmd
facebook = self.facebook
from ..facebook import Facebook
assert isinstance(facebook, Facebook), 'entity delegate error: %s' % facebook
# 0. check group
group = cmd.group
owner = facebook.owner(identifier=group)
members = facebook.members(identifier=group)
if owner is None or members is None or len(members) == 0:
# FIXME: group profile lost?
# FIXME: how to avoid strangers impersonating group members?
return self.__temporary_save(cmd=cmd, sender=msg.sender)
# 1. check permission
sender = msg.sender
if sender != owner:
# not the owner? check assistants
assistants = facebook.assistants(identifier=group)
if assistants is None or sender not in assistants:
text = '%s is not the owner/assistant of group %s, cannot reset members' % (sender, group)
raise AssertionError(text)
# 2. resetting members
new_members = self.members(cmd=cmd)
if new_members is None or len(new_members) == 0:
raise ValueError('group command error: %s' % cmd)
# 2.1. check owner
if owner not in new_members:
raise AssertionError('cannot expel owner (%s) of group: %s' % (owner, group))
# 2.2. build expelled-list
remove_list = []
for item in members:
if item not in new_members:
# removing member found
remove_list.append(item)
# 2.3. build invited-list
add_list = []
for item in new_members:
if item not in members:
# adding member found
add_list.append(item)
# 2.4. do reset
if len(add_list) > 0 or len(remove_list) > 0:
if facebook.save_members(members=new_members, identifier=group):
if len(add_list) > 0:
cmd['added'] = ID.revert(add_list)
if len(remove_list) > 0:
cmd['removed'] = ID.revert(remove_list)
# 3. response (no need to response this group command)
return None
def __broadcast_message(self, msg: ReliableMessage) -> Optional[Content]:
""" Deliver message to everyone@everywhere, including all neighbours """
self.debug('broadcasting message from: %s' % msg.sender)
if self.__traced(msg=msg, station=self.station):
self.error('ignore traced msg: %s in %s' % (self.station, msg.get('traces')))
return None
session_server = self.session_server
# push to all neighbors connected th current station
neighbors = self.__neighbors.copy()
sent_neighbors = []
success = 0
for sid in neighbors:
if sid == self.station:
continue
sessions = session_server.active_sessions(identifier=sid)
if len(sessions) == 0:
self.warning('remote station (%s) not connected, try later.' % sid)
continue
if self.__push_message(msg=msg, receiver=sid, sessions=sessions):
sent_neighbors.append(sid)
success += 1
# push to the bridge (octopus) of current station
sid = self.station
sessions = session_server.active_sessions(identifier=sid)
if len(sessions) > 0:
# tell the bridge ignore this neighbor stations
sent_neighbors.append(sid)
msg['sent_neighbors'] = ID.revert(sent_neighbors)
self.__push_message(msg=msg, receiver=sid, sessions=sessions)
# FIXME: what about the failures
# response
text = 'Message broadcast to %d/%d stations' % (success, len(neighbors))
res = TextContent(text=text)
res.group = msg.group
return res
def save_contacts(self, contacts: List[ID], user: ID) -> bool:
assert contacts is not None, 'contacts cannot be empty'
# store into memory cache
self.__contacts[user] = contacts
# store into local storage
path = self.__contacts_path(identifier=user)
self.info('Saving contacts into: %s' % path)
contacts = ID.revert(members=contacts)
text = '\n'.join(contacts)
return self.write_text(text=text, path=path)
def save_members(self, members: List[ID], group: ID) -> bool:
assert len(
members) > 0, 'group members should not be empty: %s' % group
# 1. store into memory cache
self.__members[group] = members
# 2. store into local storage
path = self.__members_path(identifier=group)
self.info('Saving members into: %s' % path)
members = ID.revert(members=members)
text = '\n'.join(members)
return self.write_text(text=text, path=path)
def execute(self, cmd: Command, msg: ReliableMessage) -> Optional[Content]:
assert isinstance(cmd, InviteCommand), 'group command error: %s' % cmd
facebook = self.facebook
from ..facebook import Facebook
assert isinstance(facebook,
Facebook), 'entity delegate error: %s' % facebook
# 0. check group
group = cmd.group
owner = facebook.owner(identifier=group)
members = facebook.members(identifier=group)
if owner is None or members is None or len(members) == 0:
# NOTICE: group membership lost?
# reset group members
return self.__reset(cmd=cmd, msg=msg)
# 1. check permission
sender = msg.sender
if sender not in members:
# not a member? check assistants
assistants = facebook.assistants(identifier=group)
if assistants is None or sender not in assistants:
raise AssertionError('only member/assistant can invite: %s' %
msg)
# 2. inviting members
invite_list = self.members(cmd=cmd)
if invite_list is None or len(invite_list) == 0:
raise ValueError('invite command error: %s' % cmd)
# 2.1. check for reset
if sender == owner and owner in invite_list:
# NOTICE: owner invites owner?
# it means this should be a 'reset' command
return self.__reset(cmd=cmd, msg=msg)
# 2.2. build invited-list
add_list = []
for item in invite_list:
if item in members:
continue
# new member found
add_list.append(item)
members.append(item)
# 2.3. do invite
if len(add_list) > 0:
if facebook.save_members(members=members, identifier=group):
cmd['added'] = ID.revert(add_list)
# 3. response (no need to response this group command)
return None
def execute(self, cmd: Command, msg: ReliableMessage) -> Optional[Content]:
assert isinstance(cmd, ExpelCommand), 'group command error: %s' % cmd
facebook = self.facebook
from ..facebook import Facebook
assert isinstance(facebook,
Facebook), 'entity delegate error: %s' % facebook
# 0. check group
group = cmd.group
owner = facebook.owner(identifier=group)
members = facebook.members(identifier=group)
if owner is None or members is None or len(members) == 0:
raise LookupError('Group not ready: %s' % group)
# 1. check permission
sender = msg.sender
if sender != owner:
# not the owner? check assistants
assistants = facebook.assistants(identifier=group)
if assistants is None or sender not in assistants:
text = '%s is not the owner/assistant of group %s, cannot expel member' % (
sender, group)
raise AssertionError(text)
# 2. expelling members
expel_list = self.members(cmd=cmd)
if expel_list is None or len(expel_list) == 0:
raise ValueError('expel command error: %s' % cmd)
# 2.1. check owner
if owner in expel_list:
raise AssertionError('cannot expel owner %s of group %s' %
(owner, group))
# 2.2. build removed-list
remove_list = []
for item in expel_list:
if item not in members:
continue
# expelled member found
remove_list.append(item)
members.remove(item)
# 2.3. do expel
if len(remove_list) > 0:
if facebook.save_members(members=members, identifier=group):
cmd['removed'] = ID.revert(remove_list)
# 3. response (no need to response this group command)
return None
def __traced(self, msg: ReliableMessage, station: ID) -> bool:
traces = msg.get('traces')
if traces is None:
# broadcast message starts from here
traces = [station]
else:
for node in traces:
if isinstance(node, str):
if station == node:
return True
elif isinstance(node, dict):
if station == node.get('ID'):
return True
else:
self.error('traces node error: %s' % node)
# broadcast message go through here
traces.append(station)
msg['traces'] = ID.revert(members=traces)
return False
def users(self, value: List[ID]):
if value is None:
self.pop('users', None)
else:
self['users'] = ID.revert(members=value)
self.__users = value
def mute_list(self, value: List[ID]):
if value is None:
self.pop('list', None)
else:
self['list'] = ID.revert(members=value)
