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ipythonchat.py
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ipythonchat.py
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import ipywidgets as widgets
import zmq
import threading
import time
import ipythonchat_state
def get_chat_window(my_nickname,socket_address):
def handle_input(sender):
context = zmq.Context()
push_socket = context.socket(zmq.PUSH)
push_socket.connect(socket_address)
push_socket.send_json({'plain_message':{'nickname':my_nickname,'message':sender.value}})
sender.value = ''
console_container = widgets.VBox(visible=False)
console_container.padding = '10px'
output_box = widgets.Textarea()
output_box.height = '400px'
output_box.font_family = 'monospace'
output_box.color = '#AAAAAA'
output_box.background_color = 'black'
output_box.width = '600px'
input_box = widgets.Text()
input_box.font_family = 'monospace'
input_box.color = '#AAAAAA'
input_box.background_color = 'black'
input_box.width = '800px'
console_container.children = [output_box, input_box]
console_container.visible = True
input_box.on_submit(handle_input)
return output_box,console_container
def chat_room(kernel,output_box,socket_address):
context = zmq.Context()
subscribe_socket = context.socket(zmq.SUB)
subscribe_socket.connect(socket_address)
subscribe_socket.setsockopt(zmq.SUBSCRIBE, '')
print '>>> welcome to the zmq chatroom'
while True:
# print 'loop'
zr,zw,zx = zmq.select([subscribe_socket],[],[],timeout = 0.0)
if subscribe_socket in zr:
# print 'ok got message'
message = subscribe_socket.recv_json()
if 'plain_message' in message:
plain_message = message['plain_message']
output_box.value += '{}: {}\n'.format(plain_message['nickname'],plain_message['message'])
elif 'object_transfer' in message:
# print 'aqcuiring lock on shared state'
ipythonchat_state.shared_state_lock.acquire()
#ok now we no, nobody else is manipulating the shared_state object
sender = message['object_transfer']['sender']
import pickle
from_sender = pickle.loads(message['object_transfer']['payload'])
output_box.value += '<< got data object from {}>>\n'.format(sender)
ipythonchat_state.shared_state = from_sender
ipythonchat_state.shared_state_lock.release()
# print 'released lock, shared state is: ', ipythonchat_state.shared_state
kernel.do_one_iteration()
time.sleep(0.01)
def get_obj():
ipythonchat_state.shared_state_lock.acquire()
#ok now we no, nobody else is manipulating the shared_state object
copied = dict(**ipythonchat_state.shared_state) if ipythonchat_state.shared_state else None
ipythonchat_state.shared_state_lock.release()
return copied
def start_chat(kernel,output_box,socket_addess):
p = threading.Thread(target = chat_room, args = (kernel,output_box,socket_addess))
p.start()
def bootstrap(nickname, write_to, read_from):
output_box,console_container = get_chat_window(nickname,write_to)
start_chat(get_ipython().kernel,output_box,read_from)
def send_obj(obj):
import pickle
msg = {'object_transfer':{'payload':pickle.dumps(obj),'sender':nickname}}
context = zmq.Context()
push_socket = context.socket(zmq.PUSH)
push_socket.connect(write_to)
push_socket.send_json(msg)
return send_obj,console_container