main.py
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#!/usr/bin/env python
###############################################################################
# mjc-broker #
# main.py #
# #
# (C) 2016 David Zhong #
# #
# Permission is hereby granted, free of charge, to any person obtaining a #
# copy of this software and associated documentation files (the "Software"), #
# to deal in the Software without restriction, including without limitation #
# the rights to use, copy, modify, merge, publish, distribute, sublicense, #
# and/or sell copies of the Software, and to permit persons to whom the #
# Software is furnished to do so, subject to the following conditions: #
# #
# The above copyright notice and this permission notice shall be included in #
# all copies or substantial portions of the Software. #
# #
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR #
# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, #
# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE #
# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER #
# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING #
# FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER #
# DEALINGS IN THE SOFTWARE. #
###############################################################################
import asyncore
import json
import subprocess
import wx
import sys
import configurator
from client import BrokerClient
from version import TITLE, VERSION
class MainApp(wx.App):
def OnInit(self):
self.frame = AppFrame()
self.frame.Show()
return True
class AppFrame(wx.Frame):
def __init__(self):
wx.Frame.__init__(self, parent=None, title=TITLE + " - " + VERSION, size=(250,320))
# Load config
self.config = load_json("config.json")
# Create panel elements
self.panel = wx.Panel(self)
wx.StaticText(self.panel, label="Name", pos=(5,5))
wx.StaticText(self.panel, label="IP Addr", pos=(5,88))
self.ctrl_name = wx.TextCtrl(self.panel, pos=(5,25), size=(230,-1))
self.ctrl_ipaddr = wx.TextCtrl(self.panel, pos=(55,85), size=(180,-1), style=wx.TE_READONLY)
self.ctrl_register = wx.Button(self.panel, pos=(5,55), label="Register")
self.ctrl_pair = wx.Button(self.panel, pos=(5,245), label="Pair")
self.ctrl_list = wx.ListBox(self.panel, pos=(5,115), size=(230,120), style=wx.LB_SINGLE)
self.SetStatusBar(wx.StatusBar(self))
# Set gui initial state
self.ctrl_pair.Disable()
self.SetStatusText("closed")
# Bind element event handlers
self.Bind(wx.EVT_BUTTON, lambda _: self.DoRegister(), self.ctrl_register)
self.Bind(wx.EVT_BUTTON, lambda _: self.DoPair(), self.ctrl_pair)
# Create client
self.client = BrokerClient(self.config["server"]["address"], self.config["server"]["port"])
self.client.subscribe(self.MessageHandler)
self.client_timer = wx.Timer(self)
self.Bind(wx.EVT_TIMER, lambda _: asyncore.poll(), self.client_timer)
self.client_timer.Start(100)
self.client.Connect()
def MessageHandler(self, topic, message):
if topic == "status":
self.SetStatusText(message)
if message == "registered":
self.OnRegistered()
else:
self.OnDeregistered()
elif topic == "address":
self.SetIPAddress(message)
elif topic == "clients":
self.SetClientList(message)
elif topic == "error":
self.ShowError(message, False)
elif topic == "fatal":
self.ShowError(message, True)
elif topic == "pair":
sim = self.ApplySettings(*message[1:])
self.ShowPairResult(sim, *message)
self.Close()
def OnRegistered(self):
self.ctrl_name.Disable()
self.ctrl_register.Disable()
self.ctrl_pair.Enable()
def OnDeregistered(self):
self.ctrl_name.Enable()
self.ctrl_register.Enable()
self.ctrl_pair.Disable()
def SetIPAddress(self, addr):
self.ctrl_ipaddr.SetValue(addr)
def SetClientList(self, clients):
self.ctrl_list.SetItems(clients)
idx = self.ctrl_list.FindString(self.GetName())
if idx >= 0:
self.ctrl_list.Delete(idx)
def ShowPairResult(self, sim, name, local_port, remote_addr, remote_port):
message = "Sim: %s\nPairing with '%s'\nLocal port: %d\nRemote: %s:%d" % (sim, name, local_port, remote_addr, remote_port)
wx.MessageDialog(self, message=message, caption="Pairing Request", style=wx.OK|wx.ICON_INFORMATION).ShowModal()
def ShowWarning(self, message):
wx.MessageDialog(self, message=message, caption="Warning", style=wx.OK|wx.ICON_WARNING).ShowModal()
def ShowError(self, message, fatal):
if fatal:
caption = "Fatal Error"
else:
caption = "Error"
wx.MessageDialog(self, message=message, caption=caption, style=wx.OK|wx.ICON_ERROR).ShowModal()
if fatal:
self.Close()
def DoRegister(self):
self.client.DoRegister(self.GetName())
def DoPair(self):
try:
self.client.DoRequestPair(self.GetSelection())
except IndexError:
self.ShowWarning("Please select a partner")
def ApplySettings(self, local_port, remote_addr, remote_port):
mjcroot = self.config["mjcroot"]
sim = "Loaded from config.json"
if not mjcroot:
sim, mjcroot = configurator.GetMJCPath()[0]
configurator.SetPairingData(local_port, remote_addr, remote_port, mjcroot)
return sim
def GetName(self):
return self.ctrl_name.GetValue()
def GetSelection(self):
idx = self.ctrl_list.GetSelection()
if idx < 0:
raise IndexError("no selection has been made")
return self.ctrl_list.GetString(idx)
def excepthook(etype, value, trace):
with open("crash.log", "w") as fh:
fh.write(''.join(traceback.format_exception(etype, value, trace)))
sys.exit(1)
def load_json(filename):
with open(filename) as fh:
return json.load(fh)
def main():
import logging
logging.basicConfig(filename="mjc-broker.log", format="%(levelname)s:%(asctime)s:%(message)s")
sys.excepthook = excepthook
try:
MainApp(redirect=True).MainLoop()
except:
logging.exception("fatal error")
if __name__ == "__main__":
main()