232 lines
7.2 KiB
Python
232 lines
7.2 KiB
Python
#!/usr/local/bin/python
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import urllib
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import logging
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import logging.config
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import json
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import time
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import datetime
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import os
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import sys
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import shutil
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from Queue import Queue
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from commandlistener import CommandListener
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from configobj import ConfigObj
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from poster.encode import multipart_encode
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from poster.streaminghttp import register_openers
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import urllib2
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from subprocess import Popen
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from threading import Thread
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import mutagen
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from api_clients import api_client
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# configure logging
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try:
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logging.config.fileConfig("logging.cfg")
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except Exception, e:
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print 'Error configuring logging: ', e
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sys.exit()
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# loading config file
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try:
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config = ConfigObj('/etc/airtime/recorder.cfg')
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except Exception, e:
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logger = logging.getLogger()
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logger.error('Error loading config file: %s', e)
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sys.exit()
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def getDateTimeObj(time):
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timeinfo = time.split(" ")
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date = timeinfo[0].split("-")
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time = timeinfo[1].split(":")
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return datetime.datetime(int(date[0]), int(date[1]), int(date[2]), int(time[0]), int(time[1]), int(time[2]))
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class ShowRecorder(Thread):
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def __init__ (self, show_instance, show_name, filelength, start_time, filetype):
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Thread.__init__(self)
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self.api_client = api_client.api_client_factory(config)
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self.filelength = filelength
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self.start_time = start_time
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self.filetype = filetype
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self.show_instance = show_instance
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self.show_name = show_name
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self.logger = logging.getLogger('root')
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self.p = None
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def record_show(self):
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length = str(self.filelength)+".0"
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filename = self.start_time
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filename = filename.replace(" ", "-")
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filepath = "%s%s.%s" % (config["base_recorded_files"], filename, self.filetype)
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command = "ecasound -i alsa -o %s -t:%s" % (filepath, length)
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#-ge:0.1,0.1,0,-1
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args = command.split(" ")
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self.logger.info("starting record")
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self.logger.info("command " + command)
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self.p = Popen(args)
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#blocks at the following line until the child process
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#quits
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code = self.p.wait()
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self.p = None
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self.logger.info("finishing record, return code %s", code)
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return code, filepath
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def cancel_recording(self):
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#add 3 second delay before actually cancelling the show. The reason
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#for this is because it appears that ecasound starts 1 second later than
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#it should, and therefore this method is sometimes incorrectly called 1
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#second before the show ends.
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time.sleep(3)
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#send signal interrupt (2)
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self.logger.info("Show manually cancelled!")
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if (self.p is not None):
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self.p.terminate()
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self.p = None
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#if self.p is defined, then the child process ecasound is recording
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def is_recording(self):
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return (self.p is not None)
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def upload_file(self, filepath):
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filename = os.path.split(filepath)[1]
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# Register the streaming http handlers with urllib2
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register_openers()
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# headers contains the necessary Content-Type and Content-Length
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# datagen is a generator object that yields the encoded parameters
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datagen, headers = multipart_encode({"file": open(filepath, "rb"), 'name': filename, 'show_instance': self.show_instance})
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self.api_client.upload_recorded_show(datagen, headers)
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def set_metadata_and_save(self, filepath):
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try:
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date = self.start_time
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md = date.split(" ")
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time = md[1].replace(":", "-")
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self.logger.info("time: %s" % time)
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name = time+"-"+self.show_name
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name.encode('utf-8')
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artist = "AIRTIMERECORDERSOURCEFABRIC".encode('utf-8')
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#set some metadata for our file daemon
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recorded_file = mutagen.File(filepath, easy=True)
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recorded_file['title'] = name
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recorded_file['artist'] = artist
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recorded_file['date'] = md[0]
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recorded_file['tracknumber'] = self.show_instance
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recorded_file.save()
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except Exception, e:
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self.logger.error("Exception: %s", e)
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def run(self):
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code, filepath = self.record_show()
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if code == 0:
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try:
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self.logger.info("Preparing to upload %s" % filepath)
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self.set_metadata_and_save(filepath)
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self.upload_file(filepath)
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except Exceptio, e:
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self.logger.error(e)
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else:
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self.logger.info("problem recording show")
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class RecordScheduler(Thread):
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def __init__(self, q):
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Thread.__init__(self)
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self.queue = q
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self.shows_to_record = {}
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self.logger = logging.getLogger('root')
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def process_shows(self, shows):
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self.logger.info("Processing show schedules...")
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self.shows_to_record = {}
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temp = shows[u'shows']
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for show in temp:
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show_starts = getDateTimeObj(show[u'starts'])
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show_end = getDateTimeObj(show[u'ends'])
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time_delta = show_end - show_starts
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self.shows_to_record[show[u'starts']] = [time_delta, show[u'instance_id'], show[u'name']]
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self.logger.info(self.shows_to_record)
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def check_record(self):
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if len(self.shows_to_record) != 0:
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try:
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tnow = datetime.datetime.now()
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sorted_show_keys = sorted(self.shows_to_record.keys())
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start_time = sorted_show_keys[0]
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next_show = getDateTimeObj(start_time)
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self.logger.debug("Next show %s", next_show)
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self.logger.debug("Now %s", tnow)
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delta = next_show - tnow
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min_delta = datetime.timedelta(seconds=5)
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if delta <= min_delta:
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self.logger.debug("sleeping %s seconds until show", delta.seconds)
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time.sleep(delta.seconds)
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show_length = self.shows_to_record[start_time][0]
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show_instance = self.shows_to_record[start_time][1]
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show_name = self.shows_to_record[start_time][2]
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self.sr = ShowRecorder(show_instance, show_name, show_length.seconds, start_time, filetype="mp3")
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self.sr.start()
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#remove show from shows to record.
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del self.shows_to_record[start_time]
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except Exception,e :
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self.logger.error(e)
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else:
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self.logger.info("No recording schedule...")
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def run(self):
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self.logger.info("RecordScheduler started...")
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while True:
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if not self.queue.empty():
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try:
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self.logger.debug("Received data from command handler")
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shows = self.queue.get()
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self.logger.debug('shows %s' % shows)
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self.process_shows(shows)
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except Exception, e:
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self.logger.error(e)
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self.check_record()
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time.sleep(1)
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if __name__ == '__main__':
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q = Queue()
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cl = CommandListener(q)
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cl.start()
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rs = RecordScheduler(q)
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rs.start()
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