hugvey/hugvey/central_command.py

472 lines
16 KiB
Python

"""
"Conscript reporting"
This server controls all hugveys and the processing of their narratives. It exposes itself for control to the panopticon server.
"""
import os
import time
import yaml
import zmq
from zmq.asyncio import Context
import asyncio
from hugvey.communication import getTopic, zmqSend, zmqReceive
from hugvey.panopticon import Panopticon
from hugvey.story import Story
from hugvey.voice.google import GoogleVoiceClient
from hugvey.voice.player import Player
from hugvey.voice.streamer import AudioStreamer
import json
import logging
import queue
import threading
logger = logging.getLogger("command")
# def exceptionEmitter(a):
# print(a)
# def decorate(func):
# print('decorate')
# async def call(*args, **kwargs):
# print('call')
# # pre(func, *args, **kwargs)
# try:
# result = await func(*args, **kwargs)
# except Exception as e:
# logger.critical(e, "in", func)
# raise e
# # post(func, *args, **kwargs)
# return result
# return call
# return decorate
class CentralCommand(object):
"""docstring for CentralCommand."""
def __init__(self, debug_mode=False):
self.debug = debug_mode
self.eventQueue = asyncio.Queue()
self.commandQueue = asyncio.Queue()
self.isRunning = threading.Event()
self.hugveys = {}
self.ctx = Context.instance()
self.hugveyLock = asyncio.Lock()
self.start_time = time.time()
self.languageFiles = {}
def loadConfig(self, filename):
if hasattr(self, 'config'):
raise Exception("Overriding config not supported yet")
with open(filename, 'r') as fp:
logger.debug('Load config from {}'.format(filename))
self.config = yaml.safe_load(fp)
self.hugvey_ids = [i + 1 for i in range(self.config['hugveys'])]
self.loadLanguages()
self.panopticon = Panopticon(self, self.config)
def loadLanguages(self):
logger.debug('load language files')
self.languages = {}
for lang in self.config['languages']:
lang_filename = os.path.join(self.config['web']['files_dir'], lang['file'])
self.languageFiles[lang['code']] = lang['file']
with open(lang_filename, 'r') as fp:
self.languages[lang['code']] = json.load(fp)
def getHugveyStatus(self, hv_id):
status = {'id': hv_id}
if not hv_id in self.hugveys:
status['status'] = 'off'
return status
hv = self.hugveys[hv_id]
if not hv.story:
status['status'] = 'off'
return status
status['status'] = hv.getStatus()
status['language'] = hv.language_code
status['msg'] = hv.story.currentMessage.id if hv.story.currentMessage else None
status['finished'] = hv.story.isFinished()
status['history'] = hv.story.getLogSummary()
status['counts'] = {t: len(a) for t, a in status['history'].items() if t != 'directions' }
return status
def getStatusSummary(self):
status = {
'uptime': time.time() - self.start_time,
'languages': self.config['languages'],
'hugveys': [],
}
for hv_id in self.hugvey_ids:
status['hugveys'].append(self.getHugveyStatus(hv_id))
return status
def commandHugvey(self, hv_id, msg):
"""
prepare command to be picked up by the sender
"""
if threading.current_thread().getName() != 'MainThread':
# Threading nightmares! Adding to queue from other thread/loop (not sure which is the isse)
# won't trigger asyncios queue.get() so we have to do this thread
# safe, in the right loop
self.loop.call_soon_threadsafe(self._queueCommand, hv_id, msg)
else:
self._queueCommand(hv_id, msg)
def _queueCommand(self, hv_id, msg):
self.commandQueue.put_nowait((hv_id, msg))
# if msg['action'] == 'play':
# self.commandQueue.put_nowait((hv_id, {
# 'action': 'play',
# 'msg': "This is an interrption",
# 'id': 'test',
# }))
def commandAllHugveys(self, msg):
for hv_id in self.hugvey_ids:
self.commandHugvey(hv_id, msg)
def commandAllActiveHugveys(self, msg):
for hv_id in self.hugveys:
self.commandHugvey(hv_id, msg)
async def commandSender(self):
s = self.ctx.socket(zmq.PUB)
s.bind(self.config['events']['cmd_address'])
self.commandAllHugveys({'action': 'show_yourself'})
# sleep to allow pending connections to connect
await asyncio.sleep(1)
logger.info("Ready to publish commands on: {}".format(
self.config['events']['cmd_address']))
logger.debug('Already {} items in queue'.format(
self.commandQueue.qsize()))
while self.isRunning.is_set():
hv_id, cmd = await self.commandQueue.get()
logger.info('Got command to send: {} {}'.format(hv_id, cmd))
zmqSend(s, hv_id, cmd)
logger.warn('Stopping command sender')
s.close()
async def instantiateHugvey(self, hugvey_id, msg):
'''
Start a HugveyState, according to a show_yourself reply
'event': 'connection',
'id': self.hugvey_id,
'host': socket.gethostname(),
'ip': self.getIp(),
'''
async with self.hugveyLock: # lock to prevent duplicates on creation
if not hugvey_id in self.hugveys:
logger.info(f'Instantiate hugvey #{hugvey_id}')
h = HugveyState(hugvey_id, self)
h.config(msg['host'], msg['ip'])
self.hugveys[hugvey_id] = h
thread = threading.Thread(
target=h.start, name=f"hugvey#{hugvey_id}")
thread.start()
else:
logger.info(f'Reconfigure hugvey #{hugvey_id}')
# (re)configure exisitng hugveys
h.config(msg['host'], msg['ip'])
async def eventListener(self):
s = self.ctx.socket(zmq.SUB)
s.bind(self.config['events']['listen_address'])
logger.info("Listen for events on: {}".format(
self.config['events']['listen_address']))
for id in self.hugvey_ids:
s.subscribe(getTopic(id))
while self.isRunning.is_set():
try:
hugvey_id, msg = await zmqReceive(s)
if hugvey_id not in self.hugvey_ids:
logger.critical(
"Message from alien Hugvey: {}".format(hugvey_id))
continue
elif hugvey_id not in self.hugveys:
if msg['event'] == 'connection':
# Create a hugvey
await self.instantiateHugvey(hugvey_id, msg)
else:
logger.warning(
"Message from uninstantiated Hugvey {}".format(hugvey_id))
logger.debug("Message contains: {}".format(msg))
continue
else:
self.hugveys[hugvey_id].queueEvent(msg)
# await self.hugveys[hugvey_id].eventQueue.put(msg)
except Exception as e:
logger.critical(f"Exception while running event loop:")
logger.exception(e)
def start(self):
self.isRunning.set()
self.loop = asyncio.get_event_loop()
# self.panopticon_loop = asyncio.new_event_loop()
self.tasks = {} # collect tasks so we can cancel in case of error
self.tasks['eventListener'] = self.loop.create_task(
self.eventListener())
self.tasks['commandSender'] = self.loop.create_task(
self.commandSender())
# we want the web interface in a separate thread
self.panopticon_thread = threading.Thread(
target=self.panopticon.start, name="Panopticon")
self.panopticon_thread.start()
self.loop.run_forever()
def stop(self):
self.isRunning.clear()
class HugveyState(object):
"""Represents the state of a Hugvey client on the server.
Manages server connections & voice parsing etc.
"""
STATE_PAUSE = "paused"
STATE_GONE = "gone"
STATE_RUNNING = "running"
def __init__(self, id: int, command: CentralCommand):
self.id = id
self.command = command
self.logger = logging.getLogger(f"hugvey{self.id}")
self.loop = asyncio.new_event_loop()
self.isConfigured = False
self.isRunning = asyncio.Event(loop=self.loop)
self.eventQueue = None
self.language_code = 'en-GB'
self.story = None
self.streamer = None
self.status = self.STATE_PAUSE
self.google = None
self.notShuttingDown = True # TODO: allow shutdown of object
def getStatus(self):
if self.story.isFinished():
return "finished"
return self.status
def config(self, hostname, ip):
self.ip = ip
self.hostname = hostname
self.logger.info(
f"Hugvey {self.id} at {self.ip}, host: {self.hostname}")
if self.isConfigured == True:
# a reconfiguration/reconnection
pass
self.isConfigured = True
def sendCommand(self, msg):
"""
Send message or command to hugvey
@param msg: The message to be sent. Probably a dict()
"""
self.command.commandHugvey(self.id, msg)
def start(self):
"""
Start the tasks
"""
self.isRunning.set()
self.status = self.STATE_RUNNING
tasks = asyncio.gather(
self.catchException(self.processAudio()),
self.catchException(self.handleEvents()),
self.catchException(self.playStory()),
loop=self.loop)
# self.pause()
self.loop.run_until_complete(tasks)
async def catchException(self, awaitable):
try:
await awaitable
except Exception as e:
logger.exception(e)
logger.critical(f"Hugvey restart required but not implemented yet")
# TODO: restart
def queueEvent(self, msg):
if 'time' not in msg:
# add time, so we can track time passed
msg['time'] = time.time()
if not self.eventQueue:
self.logger.critical("No event queue to put {}".format(msg))
else:
# Allow for both the Hugvey Command, or the Story handle the event.
self.loop.call_soon_threadsafe(self._queueEvent, msg)
def _queueEvent(self, msg):
self.logger.debug(f"Queue event in hugvey loop: {msg}")
self.eventQueue.put_nowait(msg)
self.story.events.append(msg)
async def handleEvents(self):
self.eventQueue = asyncio.Queue() # start event queue here, to avoid loop issues
while self.command.isRunning.is_set():
event = await self.eventQueue.get()
self.logger.info("Received: {}".format(event))
if event['event'] == 'connection' and not self.isRunning.is_set():
self.restart()
if event['event'] == 'language':
self.setLanguage(event['code'])
if event['event'] == 'pause':
self.pause()
if event['event'] == 'restart':
self.restart()
if event['event'] == 'resume':
self.resume()
if event['event'] == 'change_language':
self.setLanguage(event['lang_code'])
if event['event'] == 'play_msg':
self.logger.info("DO PLAY :-)")
if not self.story:
self.logger.critical("No story to play message in")
else:
#restart first so that story loads the new json
self.restart()
# wait a tat for the restart loops to complete
await asyncio.sleep(.1)
msg = self.story.get(event['msg_id'])
if not msg:
self.logger.critical("Invalid ID to play: {}".format(event['msg_id']))
else:
self.story.setCurrentMessage(msg)
self.eventQueue = None
def setLanguage(self, language_code):
if language_code not in self.command.languages:
raise Exception("Invalid language {}".format(language_code))
self.logger.info(f"set language: {language_code}")
self.language_code = language_code
self.google.setLanguage(language_code)
self.restart()
# self.story.reset()
# self.story.setStoryData(self.command.languages[language_code])
def pause(self):
self.logger.info('Pause')
if self.google:
self.google.pause()
if self.story:
self.story.pause()
self.isRunning.clear()
self.status = self.STATE_PAUSE
def resume(self):
""" Start playing without reset"""
self.logger.info('Resume')
if self.google:
self.google.resume()
if self.story:
self.story.resume()
self.isRunning.set()
self.status = self.STATE_RUNNING
def restart(self):
""" Start playing with reset"""
self.logger.info('Restart')
if self.story:
self.story.stop()
self.resume()
self.isRunning.set()
def gone(self):
'''Status to 'gone' as in, shutdown/crashed/whatever
'''
self.pause()
if self.story:
self.story.stop()
self.logger.info('Gone')
self.status = self.STATE_GONE
async def playStory(self):
while self.notShuttingDown:
await self.isRunning.wait()
# new story instance on each run
self.story = Story(self)
self.story.setStoryData(self.command.languages[self.language_code])
await self.story.run()
# self.story = None
def getStreamer(self):
if not self.streamer:
self.streamer = AudioStreamer(
self.command.config['voice']['chunk'],
self.ip,
int(self.command.config['voice']['port']))
if self.command.debug:
self.logger.warn("Debug on: Connecting Audio player")
self.player = Player(
self.command.config['voice']['src_rate'], self.command.config['voice']['out_rate'])
self.streamer.addConsumer(self.player)
self.logger.info("Start Speech")
self.google = GoogleVoiceClient(
hugvey=self,
src_rate=self.command.config['voice']['src_rate'],
credential_file=self.command.config['voice']['google_credentials'],
language_code=self.language_code
)
self.streamer.addConsumer(self.google)
return self.streamer
async def processAudio(self):
'''
Start the audio streamer service
'''
self.logger.info("Start audio stream")
while self.notShuttingDown:
await self.isRunning.wait()
self.logger.info("Start audio stream")
await self.getStreamer().run()
self.logger.warn("stream has left the building")
# if we end up here, the streamer finished, probably meaning hte hugvey shutdown
self.gone()