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Merge branch '2.5.x-installer' into saas-installer-albert

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Conflicts:
	.gitignore
	airtime_mvc/application/Bootstrap.php
	airtime_mvc/application/configs/conf.php
	airtime_mvc/application/controllers/SystemstatusController.php
	airtime_mvc/application/controllers/UpgradeController.php
	airtime_mvc/application/upgrade/Upgrades.php
	airtime_mvc/application/views/scripts/systemstatus/index.phtml
	airtime_mvc/build/airtime.conf
	airtime_mvc/build/sql/defaultdata.sql
	airtime_mvc/public/index.php
	airtime_mvc/tests/application/helpers/AirtimeInstall.php
	install_minimal/airtime-install
	install_minimal/include/airtime-constants.php
	install_minimal/include/airtime-copy-files.sh
	install_minimal/include/airtime-db-install.php
	install_minimal/include/airtime-initialize.sh
	install_minimal/include/airtime-install.php
	install_minimal/include/airtime-installed-check.php
	install_minimal/include/airtime-remove-files.sh
	install_minimal/include/airtime-upgrade.php
	python_apps/media-monitor/install/media-monitor-copy-files.py
	python_apps/monit/monit-airtime-generic.cfg
	python_apps/pypo/airtime-playout
	python_apps/pypo/install/pypo-copy-files.py
	python_apps/pypo/liquidsoap/generate_liquidsoap_cfg.py
	python_apps/pypo/liquidsoap/ls_script.liq
	python_apps/pypo/pypo/__main__.py
	python_apps/pypo/pypo/media/update/replaygain.py
	python_apps/pypo/pypo/media/update/replaygainupdater.py
	python_apps/pypo/pypo/media/update/silananalyzer.py
	python_apps/python-virtualenv/airtime_virtual_env.pybundle
	python_apps/python-virtualenv/requirements
	utils/airtime-check-system.php
This commit is contained in:
Albert Santoni 2015-05-22 16:05:29 -04:00
commit 11c6818e61
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This tool was born out of a collaboration between Open Broadcast
and Sourcefabric. The authors of the code are:
Original Authors:
Jonas Ohrstrom <jonas@digris.ch>
Paul Baranowski <paul.baranowski@sourcefabric.org>
James Moon <james.moon@sourcefabric.org>
Almost a complete refactor/rewrite by: Martin Konecny <martin.konecny@gmail.com>

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If the disclaimer of warranty and limitation of liability provided
above cannot be given local legal effect according to their terms,
reviewing courts shall apply local law that most closely approximates
an absolute waiver of all civil liability in connection with the
Program, unless a warranty or assumption of liability accompanies a
copy of the Program in return for a fee.
END OF TERMS AND CONDITIONS
How to Apply These Terms to Your New Programs
If you develop a new program, and you want it to be of the greatest
possible use to the public, the best way to achieve this is to make it
free software which everyone can redistribute and change under these terms.
To do so, attach the following notices to the program. It is safest
to attach them to the start of each source file to most effectively
state the exclusion of warranty; and each file should have at least
the "copyright" line and a pointer to where the full notice is found.
<one line to give the program's name and a brief idea of what it does.>
Copyright (C) <year> <name of author>
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
Also add information on how to contact you by electronic and paper mail.
If the program does terminal interaction, make it output a short
notice like this when it starts in an interactive mode:
<program> Copyright (C) <year> <name of author>
This program comes with ABSOLUTELY NO WARRANTY; for details type `show w'.
This is free software, and you are welcome to redistribute it
under certain conditions; type `show c' for details.
The hypothetical commands `show w' and `show c' should show the appropriate
parts of the General Public License. Of course, your program's commands
might be different; for a GUI interface, you would use an "about box".
You should also get your employer (if you work as a programmer) or school,
if any, to sign a "copyright disclaimer" for the program, if necessary.
For more information on this, and how to apply and follow the GNU GPL, see
<http://www.gnu.org/licenses/>.
The GNU General Public License does not permit incorporating your program
into proprietary programs. If your program is a subroutine library, you
may consider it more useful to permit linking proprietary applications with
the library. If this is what you want to do, use the GNU Lesser General
Public License instead of this License. But first, please read
<http://www.gnu.org/philosophy/why-not-lgpl.html>.

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"""
Python part of radio playout (pypo)
"""
from optparse import OptionParser
from datetime import datetime
import telnetlib
import time
import sys
import signal
import logging
import locale
import os
import re
from Queue import Queue
from threading import Lock
from pypopush import PypoPush
from pypofetch import PypoFetch
from pypofile import PypoFile
from recorder import Recorder
from listenerstat import ListenerStat
from pypomessagehandler import PypoMessageHandler
from pypoliquidsoap import PypoLiquidsoap
from timeout import ls_timeout
from configobj import ConfigObj
# custom imports
from api_clients import api_client
from std_err_override import LogWriter
import pure
# Set up command-line options
parser = OptionParser()
# help screen / info
usage = "%prog [options]" + " - python playout system"
parser = OptionParser(usage=usage)
# Options
parser.add_option("-v", "--compat",
help="Check compatibility with server API version",
default=False,
action="store_true",
dest="check_compat")
parser.add_option("-t", "--test",
help="Do a test to make sure everything is working properly.",
default=False,
action="store_true",
dest="test")
parser.add_option("-b",
"--cleanup",
help="Cleanup",
default=False,
action="store_true",
dest="cleanup")
parser.add_option("-c",
"--check",
help="Check the cached schedule and exit",
default=False,
action="store_true",
dest="check")
# parse options
(options, args) = parser.parse_args()
LIQUIDSOAP_MIN_VERSION = "1.1.1"
PYPO_HOME='/var/tmp/airtime/pypo/'
def configure_environment():
os.environ["HOME"] = PYPO_HOME
os.environ["TERM"] = 'xterm'
configure_environment()
# need to wait for Python 2.7 for this..
logging.captureWarnings(True)
# configure logging
try:
logging.config.fileConfig("/etc/airtime/pypo_logging.cfg")
logger = logging.getLogger()
LogWriter.override_std_err(logger)
except Exception, e:
print "Couldn't configure logging", e
sys.exit(1)
def configure_locale():
"""
Silly hacks to force Python 2.x to run in UTF-8 mode. Not portable at all,
however serves our purpose at the moment.
More information available here:
http://stackoverflow.com/questions/3828723/why-we-need-sys-setdefaultencodingutf-8-in-a-py-script
"""
logger.debug("Before %s", locale.nl_langinfo(locale.CODESET))
current_locale = locale.getlocale()
if current_locale[1] is None:
logger.debug("No locale currently set. Attempting to get default locale.")
default_locale = locale.getdefaultlocale()
if default_locale[1] is None:
logger.debug("No default locale exists. Let's try loading from \
/etc/default/locale")
if os.path.exists("/etc/default/locale"):
locale_config = ConfigObj('/etc/default/locale')
lang = locale_config.get('LANG')
new_locale = lang
else:
logger.error("/etc/default/locale could not be found! Please \
run 'sudo update-locale' from command-line.")
sys.exit(1)
else:
new_locale = default_locale
logger.info("New locale set to: %s", \
locale.setlocale(locale.LC_ALL, new_locale))
reload(sys)
sys.setdefaultencoding("UTF-8")
current_locale_encoding = locale.getlocale()[1].lower()
logger.debug("sys default encoding %s", sys.getdefaultencoding())
logger.debug("After %s", locale.nl_langinfo(locale.CODESET))
if current_locale_encoding not in ['utf-8', 'utf8']:
logger.error("Need a UTF-8 locale. Currently '%s'. Exiting..." % \
current_locale_encoding)
sys.exit(1)
configure_locale()
# loading config file
try:
config = ConfigObj('/etc/airtime/airtime.conf')
except Exception, e:
logger.error('Error loading config file: %s', e)
sys.exit(1)
class Global:
def __init__(self, api_client):
self.api_client = api_client
def selfcheck(self):
return self.api_client.is_server_compatible()
def test_api(self):
self.api_client.test()
def keyboardInterruptHandler(signum, frame):
logger = logging.getLogger()
logger.info('\nKeyboard Interrupt\n')
sys.exit(0)
@ls_timeout
def liquidsoap_get_info(telnet_lock, host, port, logger):
logger.debug("Checking to see if Liquidsoap is running")
try:
telnet_lock.acquire()
tn = telnetlib.Telnet(host, port)
msg = "version\n"
tn.write(msg)
tn.write("exit\n")
response = tn.read_all()
except Exception, e:
logger.error(str(e))
return None
finally:
telnet_lock.release()
return get_liquidsoap_version(response)
def get_liquidsoap_version(version_string):
m = re.match(r"Liquidsoap (\d+.\d+.\d+)", version_string)
if m:
return m.group(1)
else:
return None
if m:
current_version = m.group(1)
return pure.version_cmp(current_version, LIQUIDSOAP_MIN_VERSION) >= 0
return False
def liquidsoap_startup_test():
liquidsoap_version_string = \
liquidsoap_get_info(telnet_lock, ls_host, ls_port, logger)
while not liquidsoap_version_string:
logger.warning("Liquidsoap doesn't appear to be running!, " + \
"Sleeping and trying again")
time.sleep(1)
liquidsoap_version_string = \
liquidsoap_get_info(telnet_lock, ls_host, ls_port, logger)
while pure.version_cmp(liquidsoap_version_string, LIQUIDSOAP_MIN_VERSION) < 0:
logger.warning("Liquidsoap is running but in incorrect version! " + \
"Make sure you have at least Liquidsoap %s installed" % LIQUIDSOAP_MIN_VERSION)
time.sleep(1)
liquidsoap_version_string = \
liquidsoap_get_info(telnet_lock, ls_host, ls_port, logger)
logger.info("Liquidsoap version string found %s" % liquidsoap_version_string)
if __name__ == '__main__':
logger.info('###########################################')
logger.info('# *** pypo *** #')
logger.info('# Liquidsoap Scheduled Playout System #')
logger.info('###########################################')
#Although all of our calculations are in UTC, it is useful to know what timezone
#the local machine is, so that we have a reference for what time the actual
#log entries were made
logger.info("Timezone: %s" % str(time.tzname))
logger.info("UTC time: %s" % str(datetime.utcnow()))
signal.signal(signal.SIGINT, keyboardInterruptHandler)
api_client = api_client.AirtimeApiClient()
g = Global(api_client)
while not g.selfcheck():
time.sleep(5)
success = False
while not success:
try:
api_client.register_component('pypo')
success = True
except Exception, e:
logger.error(str(e))
time.sleep(10)
telnet_lock = Lock()
ls_host = config['pypo']['ls_host']
ls_port = config['pypo']['ls_port']
liquidsoap_startup_test()
if options.test:
g.test_api()
sys.exit(0)
pypoFetch_q = Queue()
recorder_q = Queue()
pypoPush_q = Queue()
pypo_liquidsoap = PypoLiquidsoap(logger, telnet_lock,\
ls_host, ls_port)
"""
This queue is shared between pypo-fetch and pypo-file, where pypo-file
is the consumer. Pypo-fetch will send every schedule it gets to pypo-file
and pypo will parse this schedule to determine which file has the highest
priority, and retrieve it.
"""
media_q = Queue()
# Pass only the configuration sections needed; PypoMessageHandler only needs rabbitmq settings
pmh = PypoMessageHandler(pypoFetch_q, recorder_q, config['rabbitmq'])
pmh.daemon = True
pmh.start()
pfile = PypoFile(media_q, config['pypo'])
pfile.daemon = True
pfile.start()
pf = PypoFetch(pypoFetch_q, pypoPush_q, media_q, telnet_lock, pypo_liquidsoap, config['pypo'])
pf.daemon = True
pf.start()
pp = PypoPush(pypoPush_q, telnet_lock, pypo_liquidsoap, config['pypo'])
pp.daemon = True
pp.start()
recorder = Recorder(recorder_q)
recorder.daemon = True
recorder.start()
stat = ListenerStat(config)
stat.daemon = True
stat.start()
pf.join()
logger.info("System exit")

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FILE = "file"
EVENT = "event"
STREAM_BUFFER_START = "stream_buffer_start"
STREAM_OUTPUT_START = "stream_output_start"
STREAM_BUFFER_END = "stream_buffer_end"
STREAM_OUTPUT_END = "stream_output_end"

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from threading import Thread
import urllib2
import xml.dom.minidom
import base64
from datetime import datetime
import traceback
import logging
import time
from api_clients import api_client
class ListenerStat(Thread):
HTTP_REQUEST_TIMEOUT = 30 # 30 second HTTP request timeout
def __init__(self, config, logger=None):
Thread.__init__(self)
self.config = config
self.api_client = api_client.AirtimeApiClient()
if logger is None:
self.logger = logging.getLogger()
else:
self.logger = logger
def get_node_text(self, nodelist):
rc = []
for node in nodelist:
if node.nodeType == node.TEXT_NODE:
rc.append(node.data)
return ''.join(rc)
def get_stream_parameters(self):
#[{"user":"", "password":"", "url":"", "port":""},{},{}]
return self.api_client.get_stream_parameters()
def get_stream_server_xml(self, ip, url, is_shoutcast=False):
encoded = base64.b64encode("%(admin_user)s:%(admin_pass)s" % ip)
header = {"Authorization":"Basic %s" % encoded}
if is_shoutcast:
#user agent is required for shoutcast auth, otherwise it returns 404.
user_agent = "Mozilla/5.0 (Linux; rv:22.0) Gecko/20130405 Firefox/22.0"
header["User-Agent"] = user_agent
req = urllib2.Request(
#assuming that the icecast stats path is /admin/stats.xml
#need to fix this
url=url,
headers=header)
f = urllib2.urlopen(req, timeout=ListenerStat.HTTP_REQUEST_TIMEOUT)
document = f.read()
return document
def get_icecast_stats(self, ip):
document = None
if "airtime.pro" in ip["host"].lower():
url = 'http://%(host)s:%(port)s/stats.xsl' % ip
document = self.get_stream_server_xml(ip, url)
else:
url = 'http://%(host)s:%(port)s/admin/stats.xml' % ip
document = self.get_stream_server_xml(ip, url)
dom = xml.dom.minidom.parseString(document)
sources = dom.getElementsByTagName("source")
mount_stats = None
for s in sources:
#drop the leading '/' character
mount_name = s.getAttribute("mount")[1:]
if mount_name == ip["mount"]:
timestamp = datetime.utcnow().strftime("%Y-%m-%d %H:%M:%S")
listeners = s.getElementsByTagName("listeners")
num_listeners = 0
if len(listeners):
num_listeners = self.get_node_text(listeners[0].childNodes)
mount_stats = {"timestamp":timestamp, \
"num_listeners": num_listeners, \
"mount_name": mount_name}
return mount_stats
def get_shoutcast_stats(self, ip):
url = 'http://%(host)s:%(port)s/admin.cgi?sid=1&mode=viewxml' % ip
document = self.get_stream_server_xml(ip, url, is_shoutcast=True)
dom = xml.dom.minidom.parseString(document)
current_listeners = dom.getElementsByTagName("CURRENTLISTENERS")
timestamp = datetime.utcnow().strftime("%Y-%m-%d %H:%M:%S")
num_listeners = 0
if len(current_listeners):
num_listeners = self.get_node_text(current_listeners[0].childNodes)
mount_stats = {"timestamp":timestamp, \
"num_listeners": num_listeners, \
"mount_name": "shoutcast"}
return mount_stats
def get_stream_stats(self, stream_parameters):
stats = []
#iterate over stream_parameters which is a list of dicts. Each dict
#represents one Airtime stream (currently this limit is 3).
#Note that there can be optimizations done, since if all three
#streams are the same server, we will still initiate 3 separate
#connections
for k, v in stream_parameters.items():
if v["enable"] == 'true':
try:
if v["output"] == "icecast":
mount_stats = self.get_icecast_stats(v)
if mount_stats: stats.append(mount_stats)
else:
stats.append(self.get_shoutcast_stats(v))
self.update_listener_stat_error(v["mount"], 'OK')
except Exception as e:
try:
self.update_listener_stat_error(v["mount"], str(e))
except Exception as e:
self.logger.error('Exception: %s', e)
return stats
def push_stream_stats(self, stats):
self.api_client.push_stream_stats(stats)
def update_listener_stat_error(self, stream_id, error):
keyname = '%s_listener_stat_error' % stream_id
data = {keyname: error}
self.api_client.update_stream_setting_table(data)
def run(self):
#Wake up every 120 seconds and gather icecast statistics. Note that we
#are currently querying the server every 2 minutes for list of
#mountpoints as well. We could remove this query if we hooked into
#rabbitmq events, and listened for these changes instead.
while True:
try:
stream_parameters = self.get_stream_parameters()
stats = self.get_stream_stats(stream_parameters["stream_params"])
if stats:
self.push_stream_stats(stats)
except Exception, e:
self.logger.error('Exception: %s', e)
time.sleep(120)
if __name__ == "__main__":
# create logger
logger = logging.getLogger('std_out')
logger.setLevel(logging.DEBUG)
# create console handler and set level to debug
#ch = logging.StreamHandler()
#ch.setLevel(logging.DEBUG)
# create formatter
formatter = logging.Formatter('%(asctime)s - %(name)s - %(lineno)s - %(levelname)s - %(message)s')
# add formatter to ch
#ch.setFormatter(formatter)
# add ch to logger
#logger.addHandler(ch)
#ls = ListenerStat(logger=logger)
#ls.run()

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python_apps/pypo/pypo/media/__init__.py Normal file
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python_apps/pypo/pypo/media/update/__init__.py Normal file
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python_apps/pypo/pypo/pure.py Normal file
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import re
def version_cmp(version1, version2):
def normalize(v):
return [int(x) for x in re.sub(r'(\.0+)*$','', v).split(".")]
return cmp(normalize(version1), normalize(version2))
def date_interval_to_seconds(interval):
"""
Convert timedelta object into int representing the number of seconds. If
number of seconds is less than 0, then return 0.
"""
seconds = (interval.microseconds + \
(interval.seconds + interval.days * 24 * 3600) * 10 ** 6) / float(10 ** 6)
return seconds

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# -*- coding: utf-8 -*-
import os
import sys
import time
import logging.config
import json
import telnetlib
import copy
import subprocess
import signal
from datetime import datetime
import traceback
import pure
from Queue import Empty
from threading import Thread
from subprocess import Popen, PIPE
from api_clients import api_client
from std_err_override import LogWriter
from timeout import ls_timeout
# configure logging
logging_cfg = "/etc/airtime/pypo_logging.cfg"
logging.config.fileConfig(logging_cfg)
logger = logging.getLogger()
LogWriter.override_std_err(logger)
def keyboardInterruptHandler(signum, frame):
logger = logging.getLogger()
logger.info('\nKeyboard Interrupt\n')
sys.exit(0)
signal.signal(signal.SIGINT, keyboardInterruptHandler)
#need to wait for Python 2.7 for this..
#logging.captureWarnings(True)
POLL_INTERVAL = 480
class PypoFetch(Thread):
def __init__(self, pypoFetch_q, pypoPush_q, media_q, telnet_lock, pypo_liquidsoap, config):
Thread.__init__(self)
#Hacky...
PypoFetch.ref = self
self.api_client = api_client.AirtimeApiClient()
self.fetch_queue = pypoFetch_q
self.push_queue = pypoPush_q
self.media_prepare_queue = media_q
self.last_update_schedule_timestamp = time.time()
self.config = config
self.listener_timeout = POLL_INTERVAL
self.telnet_lock = telnet_lock
self.logger = logging.getLogger()
self.pypo_liquidsoap = pypo_liquidsoap
self.cache_dir = os.path.join(config["cache_dir"], "scheduler")
self.logger.debug("Cache dir %s", self.cache_dir)
try:
if not os.path.isdir(dir):
"""
We get here if path does not exist, or path does exist but
is a file. We are not handling the second case, but don't
think we actually care about handling it.
"""
self.logger.debug("Cache dir does not exist. Creating...")
os.makedirs(dir)
except Exception, e:
pass
self.schedule_data = []
self.logger.info("PypoFetch: init complete")
"""
Handle a message from RabbitMQ, put it into our yucky global var.
Hopefully there is a better way to do this.
"""
def handle_message(self, message):
try:
self.logger.info("Received event from Pypo Message Handler: %s" % message)
m = json.loads(message)
command = m['event_type']
self.logger.info("Handling command: " + command)
if command == 'update_schedule':
self.schedule_data = m['schedule']
self.process_schedule(self.schedule_data)
elif command == 'reset_liquidsoap_bootstrap':
self.set_bootstrap_variables()
elif command == 'update_stream_setting':
self.logger.info("Updating stream setting...")
self.regenerate_liquidsoap_conf(m['setting'])
elif command == 'update_stream_format':
self.logger.info("Updating stream format...")
self.update_liquidsoap_stream_format(m['stream_format'])
elif command == 'update_station_name':
self.logger.info("Updating station name...")
self.update_liquidsoap_station_name(m['station_name'])
elif command == 'update_transition_fade':
self.logger.info("Updating transition_fade...")
self.update_liquidsoap_transition_fade(m['transition_fade'])
elif command == 'switch_source':
self.logger.info("switch_on_source show command received...")
self.pypo_liquidsoap.\
get_telnet_dispatcher().\
switch_source(m['sourcename'], m['status'])
elif command == 'disconnect_source':
self.logger.info("disconnect_on_source show command received...")
self.pypo_liquidsoap.get_telnet_dispatcher().\
disconnect_source(m['sourcename'])
else:
self.logger.info("Unknown command: %s" % command)
# update timeout value
if command == 'update_schedule':
self.listener_timeout = POLL_INTERVAL
else:
self.listener_timeout = self.last_update_schedule_timestamp - time.time() + POLL_INTERVAL
if self.listener_timeout < 0:
self.listener_timeout = 0
self.logger.info("New timeout: %s" % self.listener_timeout)
except Exception, e:
top = traceback.format_exc()
self.logger.error('Exception: %s', e)
self.logger.error("traceback: %s", top)
self.logger.error("Exception in handling Message Handler message: %s", e)
def switch_source_temp(self, sourcename, status):
self.logger.debug('Switching source: %s to "%s" status', sourcename, status)
command = "streams."
if sourcename == "master_dj":
command += "master_dj_"
elif sourcename == "live_dj":
command += "live_dj_"
elif sourcename == "scheduled_play":
command += "scheduled_play_"
if status == "on":
command += "start\n"
else:
command += "stop\n"
return command
"""
Initialize Liquidsoap environment
"""
def set_bootstrap_variables(self):
self.logger.debug('Getting information needed on bootstrap from Airtime')
try:
info = self.api_client.get_bootstrap_info()
except Exception, e:
self.logger.error('Unable to get bootstrap info.. Exiting pypo...')
self.logger.error(str(e))
self.logger.debug('info:%s', info)
commands = []
for k, v in info['switch_status'].iteritems():
commands.append(self.switch_source_temp(k, v))
stream_format = info['stream_label']
station_name = info['station_name']
fade = info['transition_fade']
commands.append(('vars.stream_metadata_type %s\n' % stream_format).encode('utf-8'))
commands.append(('vars.station_name %s\n' % station_name).encode('utf-8'))
commands.append(('vars.default_dj_fade %s\n' % fade).encode('utf-8'))
self.pypo_liquidsoap.get_telnet_dispatcher().telnet_send(commands)
self.pypo_liquidsoap.clear_all_queues()
self.pypo_liquidsoap.clear_queue_tracker()
def restart_liquidsoap(self):
try:
"""do not block - if we receive the lock then good - no other thread
will try communicating with Liquidsoap. If we don't receive, it may
mean some thread blocked and is still holding the lock. Restarting
Liquidsoap will cause that thread to release the lock as an Exception
will be thrown."""
self.telnet_lock.acquire(False)
self.logger.info("Restarting Liquidsoap")
subprocess.call('/etc/init.d/airtime-liquidsoap restart', shell=True, close_fds=True)
#Wait here and poll Liquidsoap until it has started up
self.logger.info("Waiting for Liquidsoap to start")
while True:
try:
tn = telnetlib.Telnet(self.config['ls_host'], self.config['ls_port'])
tn.write("exit\n")
tn.read_all()
self.logger.info("Liquidsoap is up and running")
break
except Exception, e:
#sleep 0.5 seconds and try again
time.sleep(0.5)
except Exception, e:
self.logger.error(e)
finally:
if self.telnet_lock.locked():
self.telnet_lock.release()
"""
TODO: This function needs to be way shorter, and refactored :/ - MK
"""
def regenerate_liquidsoap_conf(self, setting):
self.restart_liquidsoap()
self.update_liquidsoap_connection_status()
@ls_timeout
def update_liquidsoap_connection_status(self):
"""
updates the status of Liquidsoap connection to the streaming server
This function updates the bootup time variable in Liquidsoap script
"""
try:
self.telnet_lock.acquire()
tn = telnetlib.Telnet(self.config['ls_host'], self.config['ls_port'])
# update the boot up time of Liquidsoap. Since Liquidsoap is not restarting,
# we are manually adjusting the bootup time variable so the status msg will get
# updated.
current_time = time.time()
boot_up_time_command = "vars.bootup_time " + str(current_time) + "\n"
self.logger.info(boot_up_time_command)
tn.write(boot_up_time_command)
connection_status = "streams.connection_status\n"
self.logger.info(connection_status)
tn.write(connection_status)
tn.write('exit\n')
output = tn.read_all()
except Exception, e:
self.logger.error(str(e))
finally:
self.telnet_lock.release()
output_list = output.split("\r\n")
stream_info = output_list[2]
# streamin info is in the form of:
# eg. s1:true,2:true,3:false
streams = stream_info.split(",")
self.logger.info(streams)
fake_time = current_time + 1
for s in streams:
info = s.split(':')
stream_id = info[0]
status = info[1]
if(status == "true"):
self.api_client.notify_liquidsoap_status("OK", stream_id, str(fake_time))
@ls_timeout
def update_liquidsoap_stream_format(self, stream_format):
# Push stream metadata to liquidsoap
# TODO: THIS LIQUIDSOAP STUFF NEEDS TO BE MOVED TO PYPO-PUSH!!!
try:
self.telnet_lock.acquire()
tn = telnetlib.Telnet(self.config['ls_host'], self.config['ls_port'])
command = ('vars.stream_metadata_type %s\n' % stream_format).encode('utf-8')
self.logger.info(command)
tn.write(command)
tn.write('exit\n')
tn.read_all()
except Exception, e:
self.logger.error("Exception %s", e)
finally:
self.telnet_lock.release()
@ls_timeout
def update_liquidsoap_transition_fade(self, fade):
# Push stream metadata to liquidsoap
# TODO: THIS LIQUIDSOAP STUFF NEEDS TO BE MOVED TO PYPO-PUSH!!!
try:
self.telnet_lock.acquire()
tn = telnetlib.Telnet(self.config['ls_host'], self.config['ls_port'])
command = ('vars.default_dj_fade %s\n' % fade).encode('utf-8')
self.logger.info(command)
tn.write(command)
tn.write('exit\n')
tn.read_all()
except Exception, e:
self.logger.error("Exception %s", e)
finally:
self.telnet_lock.release()
@ls_timeout
def update_liquidsoap_station_name(self, station_name):
# Push stream metadata to liquidsoap
# TODO: THIS LIQUIDSOAP STUFF NEEDS TO BE MOVED TO PYPO-PUSH!!!
try:
try:
self.telnet_lock.acquire()
tn = telnetlib.Telnet(self.config['ls_host'], self.config['ls_port'])
command = ('vars.station_name %s\n' % station_name).encode('utf-8')
self.logger.info(command)
tn.write(command)
tn.write('exit\n')
tn.read_all()
except Exception, e:
self.logger.error(str(e))
finally:
self.telnet_lock.release()
except Exception, e:
self.logger.error("Exception %s", e)
"""
Process the schedule
- Reads the scheduled entries of a given range (actual time +/- "prepare_ahead" / "cache_for")
- Saves a serialized file of the schedule
- playlists are prepared. (brought to liquidsoap format) and, if not mounted via nsf, files are copied
to the cache dir (Folder-structure: cache/YYYY-MM-DD-hh-mm-ss)
- runs the cleanup routine, to get rid of unused cached files
"""
def process_schedule(self, schedule_data):
self.last_update_schedule_timestamp = time.time()
self.logger.debug(schedule_data)
media = schedule_data["media"]
media_filtered = {}
# Download all the media and put playlists in liquidsoap "annotate" format
try:
"""
Make sure cache_dir exists
"""
download_dir = self.cache_dir
try:
os.makedirs(download_dir)
except Exception, e:
pass
media_copy = {}
for key in media:
media_item = media[key]
if (media_item['type'] == 'file'):
self.sanity_check_media_item(media_item)
fileExt = os.path.splitext(media_item['uri'])[1]
dst = os.path.join(download_dir, unicode(media_item['id']) + fileExt)
media_item['dst'] = dst
media_item['file_ready'] = False
media_filtered[key] = media_item
media_item['start'] = datetime.strptime(media_item['start'],
"%Y-%m-%d-%H-%M-%S")
media_item['end'] = datetime.strptime(media_item['end'],
"%Y-%m-%d-%H-%M-%S")
media_copy[key] = media_item
self.media_prepare_queue.put(copy.copy(media_filtered))
except Exception, e: self.logger.error("%s", e)
# Send the data to pypo-push
self.logger.debug("Pushing to pypo-push")
self.push_queue.put(media_copy)
# cleanup
try: self.cache_cleanup(media)
except Exception, e: self.logger.error("%s", e)
#do basic validation of file parameters. Useful for debugging
#purposes
def sanity_check_media_item(self, media_item):
start = datetime.strptime(media_item['start'], "%Y-%m-%d-%H-%M-%S")
end = datetime.strptime(media_item['end'], "%Y-%m-%d-%H-%M-%S")
length1 = pure.date_interval_to_seconds(end - start)
length2 = media_item['cue_out'] - media_item['cue_in']
if abs(length2 - length1) > 1:
self.logger.error("end - start length: %s", length1)
self.logger.error("cue_out - cue_in length: %s", length2)
self.logger.error("Two lengths are not equal!!!")
def is_file_opened(self, path):
#Capture stderr to avoid polluting py-interpreter.log
proc = Popen(["lsof", path], stdout=PIPE, stderr=PIPE)
out = proc.communicate()[0].strip()
return bool(out)
def cache_cleanup(self, media):
"""
Get list of all files in the cache dir and remove them if they aren't being used anymore.
Input dict() media, lists all files that are scheduled or currently playing. Not being in this
dict() means the file is safe to remove.
"""
cached_file_set = set(os.listdir(self.cache_dir))
scheduled_file_set = set()
for mkey in media:
media_item = media[mkey]
if media_item['type'] == 'file':
fileExt = os.path.splitext(media_item['uri'])[1]
scheduled_file_set.add(unicode(media_item["id"]) + fileExt)
expired_files = cached_file_set - scheduled_file_set
self.logger.debug("Files to remove " + str(expired_files))
for f in expired_files:
try:
path = os.path.join(self.cache_dir, f)
self.logger.debug("Removing %s" % path)
#check if this file is opened (sometimes Liquidsoap is still
#playing the file due to our knowledge of the track length
#being incorrect!)
if not self.is_file_opened(path):
os.remove(path)
self.logger.info("File '%s' removed" % path)
else:
self.logger.info("File '%s' not removed. Still busy!" % path)
except Exception, e:
self.logger.error("Problem removing file '%s'" % f)
self.logger.error(traceback.format_exc())
def manual_schedule_fetch(self):
success, self.schedule_data = self.api_client.get_schedule()
if success:
self.process_schedule(self.schedule_data)
return success
def persistent_manual_schedule_fetch(self, max_attempts=1):
success = False
num_attempts = 0
while not success and num_attempts < max_attempts:
success = self.manual_schedule_fetch()
num_attempts += 1
return success
def main(self):
#Make sure all Liquidsoap queues are empty. This is important in the
#case where we've just restarted the pypo scheduler, but Liquidsoap still
#is playing tracks. In this case let's just restart everything from scratch
#so that we can repopulate our dictionary that keeps track of what
#Liquidsoap is playing much more easily.
self.pypo_liquidsoap.clear_all_queues()
self.set_bootstrap_variables()
# Bootstrap: since we are just starting up, we need to grab the
# most recent schedule. After that we fetch the schedule every 30
# minutes or wait for schedule updates to get pushed.
success = self.persistent_manual_schedule_fetch(max_attempts=5)
if success:
self.logger.info("Bootstrap schedule received: %s", self.schedule_data)
loops = 1
while True:
self.logger.info("Loop #%s", loops)
try:
"""
our simple_queue.get() requires a timeout, in which case we
fetch the Airtime schedule manually. It is important to fetch
the schedule periodically because if we didn't, we would only
get schedule updates via RabbitMq if the user was constantly
using the Airtime interface.
If the user is not using the interface, RabbitMq messages are not
sent, and we will have very stale (or non-existent!) data about the
schedule.
Currently we are checking every POLL_INTERVAL seconds
"""
message = self.fetch_queue.get(block=True, timeout=self.listener_timeout)
self.handle_message(message)
except Empty, e:
self.logger.info("Queue timeout. Fetching schedule manually")
self.persistent_manual_schedule_fetch(max_attempts=5)
except Exception, e:
top = traceback.format_exc()
self.logger.error('Exception: %s', e)
self.logger.error("traceback: %s", top)
loops += 1
def run(self):
"""
Entry point of the thread
"""
self.main()

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python_apps/pypo/pypo/pypofile.py Normal file
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# -*- coding: utf-8 -*-
from threading import Thread
from Queue import Empty
import logging
import shutil
import os
import sys
import stat
import requests
import ConfigParser
import json
import hashlib
from requests.exceptions import ConnectionError, HTTPError, Timeout
from std_err_override import LogWriter
CONFIG_PATH = '/etc/airtime/airtime.conf'
# configure logging
logging_cfg = "/etc/airtime/pypo_logging.cfg"
logging.config.fileConfig(logging_cfg)
logger = logging.getLogger()
LogWriter.override_std_err(logger)
#need to wait for Python 2.7 for this..
#logging.captureWarnings(True)
class PypoFile(Thread):
def __init__(self, schedule_queue, config):
Thread.__init__(self)
self.logger = logging.getLogger()
self.media_queue = schedule_queue
self.media = None
self.cache_dir = os.path.join(config["cache_dir"], "scheduler")
def copy_file(self, media_item):
"""
Copy media_item from local library directory to local cache directory.
"""
src = media_item['uri']
dst = media_item['dst']
src_size = media_item['filesize']
dst_exists = True
try:
dst_size = os.path.getsize(dst)
except Exception, e:
dst_exists = False
do_copy = False
if dst_exists:
if src_size != dst_size:
do_copy = True
else:
self.logger.debug("file %s already exists in local cache as %s, skipping copying..." % (src, dst))
else:
do_copy = True
media_item['file_ready'] = not do_copy
if do_copy:
self.logger.debug("copying from %s to local cache %s" % (src, dst))
try:
config = self.read_config_file(CONFIG_PATH)
CONFIG_SECTION = "general"
username = config.get(CONFIG_SECTION, 'api_key')
host = config.get(CONFIG_SECTION, 'base_url')
url = "http://%s/rest/media/%s/download" % (host, media_item["id"])
with open(dst, "wb") as handle:
response = requests.get(url, auth=requests.auth.HTTPBasicAuth(username, ''), stream=True, verify=False)
if not response.ok:
self.logger.error(response)
raise Exception("%s - Error occurred downloading file" % response.status_code)
for chunk in response.iter_content(1024):
if not chunk:
break
handle.write(chunk)
#make file world readable
os.chmod(dst, stat.S_IRUSR | stat.S_IRGRP | stat.S_IROTH)
if media_item['filesize'] == 0:
file_size = self.report_file_size_and_md5_to_airtime(dst, media_item["id"], host, username)
media_item["filesize"] = file_size
media_item['file_ready'] = True
except Exception, e:
self.logger.error("Could not copy from %s to %s" % (src, dst))
self.logger.error(e)
def report_file_size_and_md5_to_airtime(self, file_path, file_id, host_name, api_key):
try:
file_size = os.path.getsize(file_path)
with open(file_path, 'rb') as fh:
m = hashlib.md5()
while True:
data = fh.read(8192)
if not data:
break
m.update(data)
md5_hash = m.hexdigest()
except (OSError, IOError) as e:
file_size = 0
self.logger.error("Error getting file size and md5 hash for file id %s" % file_id)
self.logger.error(e)
# Make PUT request to Airtime to update the file size and hash
error_msg = "Could not update media file %s with file size and md5 hash" % file_id
try:
put_url = "http://%s/rest/media/%s" % (host_name, file_id)
payload = json.dumps({'filesize': file_size, 'md5': md5_hash})
response = requests.put(put_url, data=payload, auth=requests.auth.HTTPBasicAuth(api_key, ''))
if not response.ok:
self.logger.error(error_msg)
except (ConnectionError, Timeout):
self.logger.error(error_msg)
except Exception as e:
self.logger.error(error_msg)
self.logger.error(e)
return file_size
def get_highest_priority_media_item(self, schedule):
"""
Get highest priority media_item in the queue. Currently the highest
priority is decided by how close the start time is to "now".
"""
if schedule is None or len(schedule) == 0:
return None
sorted_keys = sorted(schedule.keys())
if len(sorted_keys) == 0:
return None
highest_priority = sorted_keys[0]
media_item = schedule[highest_priority]
self.logger.debug("Highest priority item: %s" % highest_priority)
"""
Remove this media_item from the dictionary. On the next iteration
(from the main function) we won't consider it for prioritization
anymore. If on the next iteration we have received a new schedule,
it is very possible we will have to deal with the same media_items
again. In this situation, the worst possible case is that we try to
copy the file again and realize we already have it (thus aborting the copy).
"""
del schedule[highest_priority]
return media_item
def read_config_file(self, config_path):
"""Parse the application's config file located at config_path."""
config = ConfigParser.SafeConfigParser()
try:
config.readfp(open(config_path))
except IOError as e:
logging.debug("Failed to open config file at %s: %s" % (config_path, e.strerror))
sys.exit()
except Exception as e:
logging.debug(e.strerror)
sys.exit()
return config
def main(self):
while True:
try:
if self.media is None or len(self.media) == 0:
"""
We have no schedule, so we have nothing else to do. Let's
do a blocked wait on the queue
"""
self.media = self.media_queue.get(block=True)
else:
"""
We have a schedule we need to process, but we also want
to check if a newer schedule is available. In this case
do a non-blocking queue.get and in either case (we get something
or we don't), get back to work on preparing getting files.
"""
try:
self.media = self.media_queue.get_nowait()
except Empty, e:
pass
media_item = self.get_highest_priority_media_item(self.media)
if media_item is not None:
self.copy_file(media_item)
except Exception, e:
import traceback
top = traceback.format_exc()
self.logger.error(str(e))
self.logger.error(top)
raise
def run(self):
"""
Entry point of the thread
"""
self.main()

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python_apps/pypo/pypo/pypoliqqueue.py Normal file
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from threading import Thread
from collections import deque
from datetime import datetime
import traceback
import sys
import time
from Queue import Empty
import signal
def keyboardInterruptHandler(signum, frame):
logger = logging.getLogger()
logger.info('\nKeyboard Interrupt\n')
sys.exit(0)
signal.signal(signal.SIGINT, keyboardInterruptHandler)
class PypoLiqQueue(Thread):
def __init__(self, q, pypo_liquidsoap, logger):
Thread.__init__(self)
self.queue = q
self.logger = logger
self.pypo_liquidsoap = pypo_liquidsoap
def main(self):
time_until_next_play = None
schedule_deque = deque()
media_schedule = None
while True:
try:
if time_until_next_play is None:
self.logger.info("waiting indefinitely for schedule")
media_schedule = self.queue.get(block=True)
else:
self.logger.info("waiting %ss until next scheduled item" % \
time_until_next_play)
media_schedule = self.queue.get(block=True, \
timeout=time_until_next_play)
except Empty, e:
#Time to push a scheduled item.
media_item = schedule_deque.popleft()
self.pypo_liquidsoap.play(media_item)
if len(schedule_deque):
time_until_next_play = \
self.date_interval_to_seconds(
schedule_deque[0]['start'] - datetime.utcnow())
if time_until_next_play < 0:
time_until_next_play = 0
else:
time_until_next_play = None
else:
self.logger.info("New schedule received: %s", media_schedule)
#new schedule received. Replace old one with this.
schedule_deque.clear()
keys = sorted(media_schedule.keys())
for i in keys:
schedule_deque.append(media_schedule[i])
if len(keys):
time_until_next_play = self.date_interval_to_seconds(
media_schedule[keys[0]]['start'] -
datetime.utcnow())
else:
time_until_next_play = None
def date_interval_to_seconds(self, interval):
"""
Convert timedelta object into int representing the number of seconds. If
number of seconds is less than 0, then return 0.
"""
seconds = (interval.microseconds + \
(interval.seconds + interval.days * 24 * 3600) * 10 ** 6) / float(10 ** 6)
if seconds < 0: seconds = 0
return seconds
def run(self):
try: self.main()
except Exception, e:
self.logger.error('PypoLiqQueue Exception: %s', traceback.format_exc())

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python_apps/pypo/pypo/pypoliquidsoap.py Normal file
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from pypofetch import PypoFetch
from telnetliquidsoap import TelnetLiquidsoap
from datetime import datetime
from datetime import timedelta
import eventtypes
import time
class PypoLiquidsoap():
def __init__(self, logger, telnet_lock, host, port):
self.logger = logger
self.liq_queue_tracker = {
"s0": None,
"s1": None,
"s2": None,
"s3": None,
"s4": None,
}
self.telnet_liquidsoap = TelnetLiquidsoap(telnet_lock, \
logger,\
host,\
port,\
self.liq_queue_tracker.keys())
def get_telnet_dispatcher(self):
return self.telnet_liquidsoap
def play(self, media_item):
if media_item["type"] == eventtypes.FILE:
self.handle_file_type(media_item)
elif media_item["type"] == eventtypes.EVENT:
self.handle_event_type(media_item)
elif media_item["type"] == eventtypes.STREAM_BUFFER_START:
self.telnet_liquidsoap.start_web_stream_buffer(media_item)
elif media_item["type"] == eventtypes.STREAM_OUTPUT_START:
if media_item['row_id'] != self.telnet_liquidsoap.current_prebuffering_stream_id:
#this is called if the stream wasn't scheduled sufficiently ahead of time
#so that the prebuffering stage could take effect. Let's do the prebuffering now.
self.telnet_liquidsoap.start_web_stream_buffer(media_item)
self.telnet_liquidsoap.start_web_stream(media_item)
elif media_item['type'] == eventtypes.STREAM_BUFFER_END:
self.telnet_liquidsoap.stop_web_stream_buffer()
elif media_item['type'] == eventtypes.STREAM_OUTPUT_END:
self.telnet_liquidsoap.stop_web_stream_output()
else: raise UnknownMediaItemType(str(media_item))
def handle_file_type(self, media_item):
"""
Wait 200 seconds (2000 iterations) for file to become ready,
otherwise give up on it.
"""
iter_num = 0
while not media_item['file_ready'] and iter_num < 2000:
time.sleep(0.1)
iter_num += 1
if media_item['file_ready']:
available_queue = self.find_available_queue()
try:
self.telnet_liquidsoap.queue_push(available_queue, media_item)
self.liq_queue_tracker[available_queue] = media_item
except Exception as e:
self.logger.error(e)
raise
else:
self.logger.warn("File %s did not become ready in less than 5 seconds. Skipping...", media_item['dst'])
def handle_event_type(self, media_item):
if media_item['event_type'] == "kick_out":
self.telnet_liquidsoap.disconnect_source("live_dj")
elif media_item['event_type'] == "switch_off":
self.telnet_liquidsoap.switch_source("live_dj", "off")
def is_media_item_finished(self, media_item):
if media_item is None:
return True
else:
return datetime.utcnow() > media_item['end']
def find_available_queue(self):
available_queue = None
for i in self.liq_queue_tracker:
mi = self.liq_queue_tracker[i]
if mi == None or self.is_media_item_finished(mi):
#queue "i" is available. Push to this queue
available_queue = i
if available_queue == None:
raise NoQueueAvailableException()
return available_queue
def verify_correct_present_media(self, scheduled_now):
#verify whether Liquidsoap is currently playing the correct files.
#if we find an item that Liquidsoap is not playing, then push it
#into one of Liquidsoap's queues. If Liquidsoap is already playing
#it do nothing. If Liquidsoap is playing a track that isn't in
#currently_playing then stop it.
#Check for Liquidsoap media we should source.skip
#get liquidsoap items for each queue. Since each queue can only have one
#item, we should have a max of 8 items.
#2013-03-21-22-56-00_0: {
#id: 1,
#type: "stream_output_start",
#row_id: 41,
#uri: "http://stream2.radioblackout.org:80/blackout.ogg",
#start: "2013-03-21-22-56-00",
#end: "2013-03-21-23-26-00",
#show_name: "Untitled Show",
#independent_event: true
#},
try:
scheduled_now_files = \
filter(lambda x: x["type"] == eventtypes.FILE, scheduled_now)
scheduled_now_webstream = \
filter(lambda x: x["type"] == eventtypes.STREAM_OUTPUT_START, \
scheduled_now)
schedule_ids = set(map(lambda x: x["row_id"], scheduled_now_files))
row_id_map = {}
liq_queue_ids = set()
for i in self.liq_queue_tracker:
mi = self.liq_queue_tracker[i]
if not self.is_media_item_finished(mi):
liq_queue_ids.add(mi["row_id"])
row_id_map[mi["row_id"]] = mi
to_be_removed = set()
to_be_added = set()
#Iterate over the new files, and compare them to currently scheduled
#tracks. If already in liquidsoap queue still need to make sure they don't
#have different attributes
#if replay gain changes, it shouldn't change the amplification of the currently playing song
for i in scheduled_now_files:
if i["row_id"] in row_id_map:
mi = row_id_map[i["row_id"]]
correct = mi['start'] == i['start'] and \
mi['end'] == i['end'] and \
mi['row_id'] == i['row_id']
if not correct:
#need to re-add
self.logger.info("Track %s found to have new attr." % i)
to_be_removed.add(i["row_id"])
to_be_added.add(i["row_id"])
to_be_removed.update(liq_queue_ids - schedule_ids)
to_be_added.update(schedule_ids - liq_queue_ids)
if to_be_removed:
self.logger.info("Need to remove items from Liquidsoap: %s" % \
to_be_removed)
#remove files from Liquidsoap's queue
for i in self.liq_queue_tracker:
mi = self.liq_queue_tracker[i]
if mi is not None and mi["row_id"] in to_be_removed:
self.stop(i)
if to_be_added:
self.logger.info("Need to add items to Liquidsoap *now*: %s" % \
to_be_added)
for i in scheduled_now_files:
if i["row_id"] in to_be_added:
self.modify_cue_point(i)
self.play(i)
#handle webstreams
current_stream_id = self.telnet_liquidsoap.get_current_stream_id()
if scheduled_now_webstream:
if int(current_stream_id) != int(scheduled_now_webstream[0]["row_id"]):
self.play(scheduled_now_webstream[0])
elif current_stream_id != "-1":
#something is playing and it shouldn't be.
self.telnet_liquidsoap.stop_web_stream_buffer()
self.telnet_liquidsoap.stop_web_stream_output()
except KeyError as e:
self.logger.error("Error: Malformed event in schedule. " + str(e))
def stop(self, queue):
self.telnet_liquidsoap.queue_remove(queue)
self.liq_queue_tracker[queue] = None
def is_file(self, media_item):
return media_item["type"] == eventtypes.FILE
def clear_queue_tracker(self):
for i in self.liq_queue_tracker.keys():
self.liq_queue_tracker[i] = None
def modify_cue_point(self, link):
assert self.is_file(link)
tnow = datetime.utcnow()
link_start = link['start']
diff_td = tnow - link_start
diff_sec = self.date_interval_to_seconds(diff_td)
if diff_sec > 0:
self.logger.debug("media item was supposed to start %s ago. Preparing to start..", diff_sec)
original_cue_in_td = timedelta(seconds=float(link['cue_in']))
link['cue_in'] = self.date_interval_to_seconds(original_cue_in_td) + diff_sec
def date_interval_to_seconds(self, interval):
"""
Convert timedelta object into int representing the number of seconds. If
number of seconds is less than 0, then return 0.
"""
seconds = (interval.microseconds + \
(interval.seconds + interval.days * 24 * 3600) * 10 ** 6) / float(10 ** 6)
if seconds < 0: seconds = 0
return seconds
def clear_all_queues(self):
self.telnet_liquidsoap.queue_clear_all()
class UnknownMediaItemType(Exception):
pass
class NoQueueAvailableException(Exception):
pass

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python_apps/pypo/pypo/pypomessagehandler.py Normal file
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# -*- coding: utf-8 -*-
import logging
import traceback
import os
import sys
from threading import Thread
import time
# For RabbitMQ
from kombu.connection import BrokerConnection
from kombu.messaging import Exchange, Queue
from kombu.simple import SimpleQueue
from amqplib.client_0_8.exceptions import AMQPConnectionException
import json
from std_err_override import LogWriter
# configure logging
logging_cfg = "/etc/airtime/pypo_logging.cfg"
logging.config.fileConfig(logging_cfg)
logger = logging.getLogger('message_h')
LogWriter.override_std_err(logger)
#need to wait for Python 2.7 for this..
#logging.captureWarnings(True)
class PypoMessageHandler(Thread):
def __init__(self, pq, rq, config):
Thread.__init__(self)
self.logger = logging.getLogger('message_h')
self.pypo_queue = pq
self.recorder_queue = rq
self.config = config
def init_rabbit_mq(self):
self.logger.info("Initializing RabbitMQ stuff")
try:
schedule_exchange = Exchange("airtime-pypo", "direct", durable=True, auto_delete=True)
schedule_queue = Queue("pypo-fetch", exchange=schedule_exchange, key="foo")
connection = BrokerConnection(self.config["host"], \
self.config["user"], \
self.config["password"], \
self.config["vhost"])
channel = connection.channel()
self.simple_queue = SimpleQueue(channel, schedule_queue)
except Exception, e:
self.logger.error(e)
return False
return True
"""
Handle a message from RabbitMQ, put it into our yucky global var.
Hopefully there is a better way to do this.
"""
def handle_message(self, message):
try:
self.logger.info("Received event from RabbitMQ: %s" % message)
m = json.loads(message)
command = m['event_type']
self.logger.info("Handling command: " + command)
if command == 'update_schedule':
self.logger.info("Updating schdule...")
self.pypo_queue.put(message)
elif command == 'reset_liquidsoap_bootstrap':
self.logger.info("Resetting bootstrap vars...")
self.pypo_queue.put(message)
elif command == 'update_stream_setting':
self.logger.info("Updating stream setting...")
self.pypo_queue.put(message)
elif command == 'update_stream_format':
self.logger.info("Updating stream format...")
self.pypo_queue.put(message)
elif command == 'update_station_name':
self.logger.info("Updating station name...")
self.pypo_queue.put(message)
elif command == 'switch_source':
self.logger.info("switch_source command received...")
self.pypo_queue.put(message)
elif command == 'update_transition_fade':
self.logger.info("Updating trasition fade...")
self.pypo_queue.put(message)
elif command == 'disconnect_source':
self.logger.info("disconnect_source command received...")
self.pypo_queue.put(message)
elif command == 'update_recorder_schedule':
self.recorder_queue.put(message)
elif command == 'cancel_recording':
self.recorder_queue.put(message)
else:
self.logger.info("Unknown command: %s" % command)
except Exception, e:
self.logger.error("Exception in handling RabbitMQ message: %s", e)
def main(self):
while not self.init_rabbit_mq():
self.logger.error("Error connecting to RabbitMQ Server. Trying again in few seconds")
time.sleep(5)
loops = 1
while True:
self.logger.info("Loop #%s", loops)
try:
message = self.simple_queue.get(block=True)
self.handle_message(message.payload)
# ACK the message to take it off the queue
message.ack()
except (IOError, AttributeError, AMQPConnectionException), e:
self.logger.error('Exception: %s', e)
self.logger.error("traceback: %s", traceback.format_exc())
while not self.init_rabbit_mq():
self.logger.error("Error connecting to RabbitMQ Server. Trying again in few seconds")
time.sleep(5)
except Exception, e:
"""
sleep 5 seconds so that we don't spin inside this
while loop and eat all the CPU
"""
time.sleep(5)
"""
There is a problem with the RabbitMq messenger service. Let's
log the error and get the schedule via HTTP polling
"""
self.logger.error('Exception: %s', e)
self.logger.error("traceback: %s", traceback.format_exc())
loops += 1
"""
Main loop of the thread:
Wait for schedule updates from RabbitMQ, but in case there arent any,
poll the server to get the upcoming schedule.
"""
def run(self):
while True:
self.main()

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python_apps/pypo/pypo/pypopush.py Normal file
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# -*- coding: utf-8 -*-
from datetime import datetime
from datetime import timedelta
from configobj import ConfigObj
import sys
import time
import logging.config
import telnetlib
import calendar
import math
import traceback
import os
from pypofetch import PypoFetch
from pypoliqqueue import PypoLiqQueue
from Queue import Empty, Queue
from threading import Thread
from api_clients import api_client
from std_err_override import LogWriter
from timeout import ls_timeout
# configure logging
logging_cfg = "/etc/airtime/pypo_logging.cfg"
logging.config.fileConfig(logging_cfg)
logger = logging.getLogger()
LogWriter.override_std_err(logger)
#need to wait for Python 2.7 for this..
#logging.captureWarnings(True)
PUSH_INTERVAL = 2
def is_stream(media_item):
return media_item['type'] == 'stream_output_start'
def is_file(media_item):
return media_item['type'] == 'file'
class PypoPush(Thread):
def __init__(self, q, telnet_lock, pypo_liquidsoap, config):
Thread.__init__(self)
self.api_client = api_client.AirtimeApiClient()
self.queue = q
self.telnet_lock = telnet_lock
self.config = config
self.pushed_objects = {}
self.logger = logging.getLogger('push')
self.current_prebuffering_stream_id = None
self.queue_id = 0
self.future_scheduled_queue = Queue()
self.pypo_liquidsoap = pypo_liquidsoap
self.plq = PypoLiqQueue(self.future_scheduled_queue, \
self.pypo_liquidsoap, \
self.logger)
self.plq.daemon = True
self.plq.start()
def main(self):
loops = 0
heartbeat_period = math.floor(30 / PUSH_INTERVAL)
media_schedule = None
while True:
try:
media_schedule = self.queue.get(block=True)
except Exception, e:
self.logger.error(str(e))
raise
else:
self.logger.debug(media_schedule)
#separate media_schedule list into currently_playing and
#scheduled_for_future lists
currently_playing, scheduled_for_future = \
self.separate_present_future(media_schedule)
self.pypo_liquidsoap.verify_correct_present_media(currently_playing)
self.future_scheduled_queue.put(scheduled_for_future)
if loops % heartbeat_period == 0:
self.logger.info("heartbeat")
loops = 0
loops += 1
def separate_present_future(self, media_schedule):
tnow = datetime.utcnow()
present = []
future = {}
sorted_keys = sorted(media_schedule.keys())
for mkey in sorted_keys:
media_item = media_schedule[mkey]
diff_td = tnow - media_item['start']
diff_sec = self.date_interval_to_seconds(diff_td)
if diff_sec >= 0:
present.append(media_item)
else:
future[mkey] = media_item
return present, future
def date_interval_to_seconds(self, interval):
"""
Convert timedelta object into int representing the number of seconds. If
number of seconds is less than 0, then return 0.
"""
seconds = (interval.microseconds + \
(interval.seconds + interval.days * 24 * 3600) * 10 ** 6) / float(10 ** 6)
return seconds
@ls_timeout
def stop_web_stream_all(self):
try:
self.telnet_lock.acquire()
tn = telnetlib.Telnet(self.config['LS_HOST'], self.config['LS_PORT'])
#msg = 'dynamic_source.read_stop_all xxx\n'
msg = 'http.stop\n'
self.logger.debug(msg)
tn.write(msg)
msg = 'dynamic_source.output_stop\n'
self.logger.debug(msg)
tn.write(msg)
msg = 'dynamic_source.id -1\n'
self.logger.debug(msg)
tn.write(msg)
tn.write("exit\n")
self.logger.debug(tn.read_all())
except Exception, e:
self.logger.error(str(e))
finally:
self.telnet_lock.release()
def run(self):
while True:
try: self.main()
except Exception, e:
top = traceback.format_exc()
self.logger.error('Pypo Push Exception: %s', top)
time.sleep(5)

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# -*- coding: utf-8 -*-
import logging
import json
import time
import datetime
import os
import sys
import pytz
import signal
import math
import traceback
import re
from configobj import ConfigObj
from poster.encode import multipart_encode
from poster.streaminghttp import register_openers
from subprocess import Popen
from subprocess import PIPE
from threading import Thread
import mutagen
from api_clients import api_client as apc
def api_client(logger):
"""
api_client returns the correct instance of AirtimeApiClient. Although there is only one
instance to choose from at the moment.
"""
return apc.AirtimeApiClient(logger)
# loading config file
try:
config = ConfigObj('/etc/airtime/airtime.conf')
except Exception, e:
print ('Error loading config file: %s', e)
sys.exit()
# TODO : add docstrings everywhere in this module
def getDateTimeObj(time):
# TODO : clean up for this function later.
# - use tuples to parse result from split (instead of indices)
# - perhaps validate the input before doing dangerous casts?
# - rename this function to follow the standard convention
# - rename time to something else so that the module name does not get
# shadowed
# - add docstring to document all behaviour of this function
timeinfo = time.split(" ")
date = [ int(x) for x in timeinfo[0].split("-") ]
my_time = [ int(x) for x in timeinfo[1].split(":") ]
return datetime.datetime(date[0], date[1], date[2], my_time[0], my_time[1], my_time[2], 0, None)
PUSH_INTERVAL = 2
class ShowRecorder(Thread):
def __init__ (self, show_instance, show_name, filelength, start_time):
Thread.__init__(self)
self.logger = logging.getLogger('recorder')
self.api_client = api_client(self.logger)
self.filelength = filelength
self.start_time = start_time
self.show_instance = show_instance
self.show_name = show_name
self.p = None
def record_show(self):
length = str(self.filelength)
filename = self.start_time
filename = filename.replace(" ", "-")
if config["pypo"]["record_file_type"] in ["mp3", "ogg"]:
filetype = config["pypo"]["record_file_type"]
else:
filetype = "ogg";
joined_path = os.path.join(config["base_recorded_files"], filename)
filepath = "%s.%s" % (joined_path, filetype)
br = config["pypo"]["record_bitrate"]
sr = config["pypo"]["record_samplerate"]
c = config["pypo"]["record_channels"]
ss = config["pypo"]["record_sample_size"]
#-f:16,2,44100
#-b:256
command = "ecasound -f:%s,%s,%s -i alsa -o %s,%s000 -t:%s" % \
(ss, c, sr, filepath, br, length)
args = command.split(" ")
self.logger.info("starting record")
self.logger.info("command " + command)
self.p = Popen(args,stdout=PIPE)
#blocks at the following line until the child process
#quits
self.p.wait()
outmsgs = self.p.stdout.readlines()
for msg in outmsgs:
m = re.search('^ERROR',msg)
if not m == None:
self.logger.info('Recording error is found: %s', outmsgs)
self.logger.info("finishing record, return code %s", self.p.returncode)
code = self.p.returncode
self.p = None
return code, filepath
def cancel_recording(self):
#send signal interrupt (2)
self.logger.info("Show manually cancelled!")
if (self.p is not None):
self.p.send_signal(signal.SIGINT)
#if self.p is defined, then the child process ecasound is recording
def is_recording(self):
return (self.p is not None)
def upload_file(self, filepath):
filename = os.path.split(filepath)[1]
# Register the streaming http handlers with urllib2
register_openers()
# headers contains the necessary Content-Type and Content-Length
# datagen is a generator object that yields the encoded parameters
datagen, headers = multipart_encode({"file": open(filepath, "rb"), 'name': filename, 'show_instance': self.show_instance})
self.api_client.upload_recorded_show(datagen, headers)
def set_metadata_and_save(self, filepath):
"""
Writes song to 'filepath'. Uses metadata from:
self.start_time, self.show_name, self.show_instance
"""
try:
full_date, full_time = self.start_time.split(" ",1)
# No idea why we translated - to : before
#full_time = full_time.replace(":","-")
self.logger.info("time: %s" % full_time)
artist = "Airtime Show Recorder"
#set some metadata for our file daemon
recorded_file = mutagen.File(filepath, easy = True)
recorded_file['artist'] = artist
recorded_file['date'] = full_date
recorded_file['title'] = "%s-%s-%s" % (self.show_name,
full_date, full_time)
#You cannot pass ints into the metadata of a file. Even tracknumber needs to be a string
recorded_file['tracknumber'] = unicode(self.show_instance)
recorded_file.save()
except Exception, e:
top = traceback.format_exc()
self.logger.error('Exception: %s', e)
self.logger.error("traceback: %s", top)
def run(self):
code, filepath = self.record_show()
if code == 0:
try:
self.logger.info("Preparing to upload %s" % filepath)
self.set_metadata_and_save(filepath)
self.upload_file(filepath)
os.remove(filepath)
except Exception, e:
self.logger.error(e)
else:
self.logger.info("problem recording show")
os.remove(filepath)
class Recorder(Thread):
def __init__(self, q):
Thread.__init__(self)
self.logger = logging.getLogger('recorder')
self.api_client = api_client(self.logger)
self.sr = None
self.shows_to_record = {}
self.server_timezone = ''
self.queue = q
self.loops = 0
self.logger.info("RecorderFetch: init complete")
success = False
while not success:
try:
self.api_client.register_component('show-recorder')
success = True
except Exception, e:
self.logger.error(str(e))
time.sleep(10)
def handle_message(self):
if not self.queue.empty():
message = self.queue.get()
msg = json.loads(message)
command = msg["event_type"]
self.logger.info("Received msg from Pypo Message Handler: %s", msg)
if command == 'cancel_recording':
if self.currently_recording():
self.cancel_recording()
else:
self.process_recorder_schedule(msg)
self.loops = 0
if self.shows_to_record:
self.start_record()
def process_recorder_schedule(self, m):
self.logger.info("Parsing recording show schedules...")
temp_shows_to_record = {}
shows = m['shows']
for show in shows:
show_starts = getDateTimeObj(show[u'starts'])
show_end = getDateTimeObj(show[u'ends'])
time_delta = show_end - show_starts
temp_shows_to_record[show[u'starts']] = [time_delta,
show[u'instance_id'], show[u'name'], m['server_timezone']]
self.shows_to_record = temp_shows_to_record
def get_time_till_next_show(self):
if len(self.shows_to_record) != 0:
tnow = datetime.datetime.utcnow()
sorted_show_keys = sorted(self.shows_to_record.keys())
start_time = sorted_show_keys[0]
next_show = getDateTimeObj(start_time)
delta = next_show - tnow
s = '%s.%s' % (delta.seconds, delta.microseconds)
out = float(s)
if out < 5:
self.logger.debug("Shows %s", self.shows_to_record)
self.logger.debug("Next show %s", next_show)
self.logger.debug("Now %s", tnow)
return out
def cancel_recording(self):
self.sr.cancel_recording()
self.sr = None
def currently_recording(self):
if self.sr is not None and self.sr.is_recording():
return True
else:
return False
def start_record(self):
if len(self.shows_to_record) == 0: return None
try:
delta = self.get_time_till_next_show()
if delta < 5:
self.logger.debug("sleeping %s seconds until show", delta)
time.sleep(delta)
sorted_show_keys = sorted(self.shows_to_record.keys())
start_time = sorted_show_keys[0]
show_length = self.shows_to_record[start_time][0]
show_instance = self.shows_to_record[start_time][1]
show_name = self.shows_to_record[start_time][2]
server_timezone = self.shows_to_record[start_time][3]
T = pytz.timezone(server_timezone)
start_time_on_UTC = getDateTimeObj(start_time)
start_time_on_server = start_time_on_UTC.replace(tzinfo=pytz.utc).astimezone(T)
start_time_formatted = '%(year)d-%(month)02d-%(day)02d %(hour)02d:%(min)02d:%(sec)02d' % \
{'year': start_time_on_server.year, 'month': start_time_on_server.month, 'day': start_time_on_server.day, \
'hour': start_time_on_server.hour, 'min': start_time_on_server.minute, 'sec': start_time_on_server.second}
seconds_waiting = 0
#avoiding CC-5299
while(True):
if self.currently_recording():
self.logger.info("Previous record not finished, sleeping 100ms")
seconds_waiting = seconds_waiting + 0.1
time.sleep(0.1)
else:
show_length_seconds = show_length.seconds - seconds_waiting
self.sr = ShowRecorder(show_instance, show_name, show_length_seconds, start_time_formatted)
self.sr.start()
break
#remove show from shows to record.
del self.shows_to_record[start_time]
#self.time_till_next_show = self.get_time_till_next_show()
except Exception, e :
top = traceback.format_exc()
self.logger.error('Exception: %s', e)
self.logger.error("traceback: %s", top)
def run(self):
"""
Main loop of the thread:
Wait for schedule updates from RabbitMQ, but in case there arent any,
poll the server to get the upcoming schedule.
"""
try:
self.logger.info("Started...")
# Bootstrap: since we are just starting up, we need to grab the
# most recent schedule. After that we can just wait for updates.
try:
temp = self.api_client.get_shows_to_record()
if temp is not None:
self.process_recorder_schedule(temp)
self.logger.info("Bootstrap recorder schedule received: %s", temp)
except Exception, e:
self.logger.error( traceback.format_exc() )
self.logger.error(e)
self.logger.info("Bootstrap complete: got initial copy of the schedule")
self.loops = 0
heartbeat_period = math.floor(30 / PUSH_INTERVAL)
while True:
if self.loops * PUSH_INTERVAL > 3600:
self.loops = 0
"""
Fetch recorder schedule
"""
try:
temp = self.api_client.get_shows_to_record()
if temp is not None:
self.process_recorder_schedule(temp)
self.logger.info("updated recorder schedule received: %s", temp)
except Exception, e:
self.logger.error( traceback.format_exc() )
self.logger.error(e)
try: self.handle_message()
except Exception, e:
self.logger.error( traceback.format_exc() )
self.logger.error('Pypo Recorder Exception: %s', e)
time.sleep(PUSH_INTERVAL)
self.loops += 1
except Exception, e :
top = traceback.format_exc()
self.logger.error('Exception: %s', e)
self.logger.error("traceback: %s", top)

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import telnetlib
from timeout import ls_timeout
def create_liquidsoap_annotation(media):
# We need liq_start_next value in the annotate. That is the value that controls overlap duration of crossfade.
filename = media['dst']
annotation = ('annotate:media_id="%s",liq_start_next="0",liq_fade_in="%s",' + \
'liq_fade_out="%s",liq_cue_in="%s",liq_cue_out="%s",' + \
'schedule_table_id="%s",replay_gain="%s dB"') % \
(media['id'],
float(media['fade_in']) / 1000,
float(media['fade_out']) / 1000,
float(media['cue_in']),
float(media['cue_out']),
media['row_id'],
media['replay_gain'])
# Override the the artist/title that Liquidsoap extracts from a file's metadata
# with the metadata we get from Airtime. (You can modify metadata in Airtime's library,
# which doesn't get saved back to the file.)
if 'metadata' in media:
if 'artist_name' in media['metadata']:
artist_name = media['metadata']['artist_name']
if isinstance(artist_name, str):
annotation += ',artist="%s"' % (artist_name.replace('"', '\\"'))
if 'track_title' in media['metadata']:
track_title = media['metadata']['track_title']
if isinstance(track_title, str):
annotation += ',title="%s"' % (track_title.replace('"', '\\"'))
annotation += ":" + filename
return annotation
class TelnetLiquidsoap:
def __init__(self, telnet_lock, logger, ls_host, ls_port, queues):
self.telnet_lock = telnet_lock
self.ls_host = ls_host
self.ls_port = ls_port
self.logger = logger
self.queues = queues
self.current_prebuffering_stream_id = None
def __connect(self):
return telnetlib.Telnet(self.ls_host, self.ls_port)
def __is_empty(self, queue_id):
return True
tn = self.__connect()
msg = '%s.queue\nexit\n' % queue_id
tn.write(msg)
output = tn.read_all().splitlines()
if len(output) == 3:
return len(output[0]) == 0
else:
raise Exception("Unexpected list length returned: %s" % output)
@ls_timeout
def queue_clear_all(self):
try:
self.telnet_lock.acquire()
tn = self.__connect()
for i in self.queues:
msg = 'queues.%s_skip\n' % i
self.logger.debug(msg)
tn.write(msg)
tn.write("exit\n")
self.logger.debug(tn.read_all())
except Exception:
raise
finally:
self.telnet_lock.release()
@ls_timeout
def queue_remove(self, queue_id):
try:
self.telnet_lock.acquire()
tn = self.__connect()
msg = 'queues.%s_skip\n' % queue_id
self.logger.debug(msg)
tn.write(msg)
tn.write("exit\n")
self.logger.debug(tn.read_all())
except Exception:
raise
finally:
self.telnet_lock.release()
@ls_timeout
def queue_push(self, queue_id, media_item):
try:
self.telnet_lock.acquire()
if not self.__is_empty(queue_id):
raise QueueNotEmptyException()
tn = self.__connect()
annotation = create_liquidsoap_annotation(media_item)
msg = '%s.push %s\n' % (queue_id, annotation.encode('utf-8'))
self.logger.debug(msg)
tn.write(msg)
show_name = media_item['show_name']
msg = 'vars.show_name %s\n' % show_name.encode('utf-8')
tn.write(msg)
self.logger.debug(msg)
tn.write("exit\n")
self.logger.debug(tn.read_all())
except Exception:
raise
finally:
self.telnet_lock.release()
@ls_timeout
def stop_web_stream_buffer(self):
try:
self.telnet_lock.acquire()
tn = telnetlib.Telnet(self.ls_host, self.ls_port)
#dynamic_source.stop http://87.230.101.24:80/top100station.mp3
msg = 'http.stop\n'
self.logger.debug(msg)
tn.write(msg)
msg = 'dynamic_source.id -1\n'
self.logger.debug(msg)
tn.write(msg)
tn.write("exit\n")
self.logger.debug(tn.read_all())
except Exception, e:
self.logger.error(str(e))
finally:
self.telnet_lock.release()
@ls_timeout
def stop_web_stream_output(self):
try:
self.telnet_lock.acquire()
tn = telnetlib.Telnet(self.ls_host, self.ls_port)
#dynamic_source.stop http://87.230.101.24:80/top100station.mp3
msg = 'dynamic_source.output_stop\n'
self.logger.debug(msg)
tn.write(msg)
tn.write("exit\n")
self.logger.debug(tn.read_all())
except Exception, e:
self.logger.error(str(e))
finally:
self.telnet_lock.release()
@ls_timeout
def start_web_stream(self, media_item):
try:
self.telnet_lock.acquire()
tn = telnetlib.Telnet(self.ls_host, self.ls_port)
#TODO: DO we need this?
msg = 'streams.scheduled_play_start\n'
tn.write(msg)
msg = 'dynamic_source.output_start\n'
self.logger.debug(msg)
tn.write(msg)
tn.write("exit\n")
self.logger.debug(tn.read_all())
self.current_prebuffering_stream_id = None
except Exception, e:
self.logger.error(str(e))
finally:
self.telnet_lock.release()
@ls_timeout
def start_web_stream_buffer(self, media_item):
try:
self.telnet_lock.acquire()
tn = telnetlib.Telnet(self.ls_host, self.ls_port)
msg = 'dynamic_source.id %s\n' % media_item['row_id']
self.logger.debug(msg)
tn.write(msg)
msg = 'http.restart %s\n' % media_item['uri'].encode('latin-1')
self.logger.debug(msg)
tn.write(msg)
tn.write("exit\n")
self.logger.debug(tn.read_all())
self.current_prebuffering_stream_id = media_item['row_id']
except Exception, e:
self.logger.error(str(e))
finally:
self.telnet_lock.release()
@ls_timeout
def get_current_stream_id(self):
try:
self.telnet_lock.acquire()
tn = telnetlib.Telnet(self.ls_host, self.ls_port)
msg = 'dynamic_source.get_id\n'
self.logger.debug(msg)
tn.write(msg)
tn.write("exit\n")
stream_id = tn.read_all().splitlines()[0]
self.logger.debug("stream_id: %s" % stream_id)
return stream_id
except Exception, e:
self.logger.error(str(e))
finally:
self.telnet_lock.release()
@ls_timeout
def disconnect_source(self, sourcename):
self.logger.debug('Disconnecting source: %s', sourcename)
command = ""
if(sourcename == "master_dj"):
command += "master_harbor.kick\n"
elif(sourcename == "live_dj"):
command += "live_dj_harbor.kick\n"
try:
self.telnet_lock.acquire()
tn = telnetlib.Telnet(self.ls_host, self.ls_port)
self.logger.info(command)
tn.write(command)
tn.write('exit\n')
tn.read_all()
except Exception, e:
self.logger.error(traceback.format_exc())
finally:
self.telnet_lock.release()
@ls_timeout
def telnet_send(self, commands):
try:
self.telnet_lock.acquire()
tn = telnetlib.Telnet(self.ls_host, self.ls_port)
for i in commands:
self.logger.info(i)
tn.write(i)
tn.write('exit\n')
tn.read_all()
except Exception, e:
self.logger.error(str(e))
finally:
self.telnet_lock.release()
def switch_source(self, sourcename, status):
self.logger.debug('Switching source: %s to "%s" status', sourcename, status)
command = "streams."
if sourcename == "master_dj":
command += "master_dj_"
elif sourcename == "live_dj":
command += "live_dj_"
elif sourcename == "scheduled_play":
command += "scheduled_play_"
if status == "on":
command += "start\n"
else:
command += "stop\n"
self.telnet_send([command])
class DummyTelnetLiquidsoap:
def __init__(self, telnet_lock, logger):
self.telnet_lock = telnet_lock
self.liquidsoap_mock_queues = {}
self.logger = logger
for i in range(4):
self.liquidsoap_mock_queues["s"+str(i)] = []
@ls_timeout
def queue_push(self, queue_id, media_item):
try:
self.telnet_lock.acquire()
self.logger.info("Pushing %s to queue %s" % (media_item, queue_id))
from datetime import datetime
print "Time now: %s" % datetime.utcnow()
annotation = create_liquidsoap_annotation(media_item)
self.liquidsoap_mock_queues[queue_id].append(annotation)
except Exception:
raise
finally:
self.telnet_lock.release()
@ls_timeout
def queue_remove(self, queue_id):
try:
self.telnet_lock.acquire()
self.logger.info("Purging queue %s" % queue_id)
from datetime import datetime
print "Time now: %s" % datetime.utcnow()
except Exception:
raise
finally:
self.telnet_lock.release()
class QueueNotEmptyException(Exception):
pass

98
python_apps/pypo/pypo/testpypoliqqueue.py Normal file
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from pypoliqqueue import PypoLiqQueue
from telnetliquidsoap import DummyTelnetLiquidsoap, TelnetLiquidsoap
from Queue import Queue
from threading import Lock
import sys
import signal
import logging
from datetime import datetime
from datetime import timedelta
def keyboardInterruptHandler(signum, frame):
logger = logging.getLogger()
logger.info('\nKeyboard Interrupt\n')
sys.exit(0)
signal.signal(signal.SIGINT, keyboardInterruptHandler)
# configure logging
format = '%(levelname)s - %(pathname)s - %(lineno)s - %(asctime)s - %(message)s'
logging.basicConfig(level=logging.DEBUG, format=format)
logging.captureWarnings(True)
telnet_lock = Lock()
pypoPush_q = Queue()
pypoLiq_q = Queue()
liq_queue_tracker = {
"s0": None,
"s1": None,
"s2": None,
"s3": None,
}
#dummy_telnet_liquidsoap = DummyTelnetLiquidsoap(telnet_lock, logging)
dummy_telnet_liquidsoap = TelnetLiquidsoap(telnet_lock, logging, \
"localhost", \
1234)
plq = PypoLiqQueue(pypoLiq_q, telnet_lock, logging, liq_queue_tracker, \
dummy_telnet_liquidsoap)
plq.daemon = True
plq.start()
print "Time now: %s" % datetime.utcnow()
media_schedule = {}
start_dt = datetime.utcnow() + timedelta(seconds=1)
end_dt = datetime.utcnow() + timedelta(seconds=6)
media_schedule[start_dt] = {"id": 5, \
"type":"file", \
"row_id":9, \
"uri":"", \
"dst":"/home/martin/Music/ipod/Hot Chocolate - You Sexy Thing.mp3", \
"fade_in":0, \
"fade_out":0, \
"cue_in":0, \
"cue_out":300, \
"start": start_dt, \
"end": end_dt, \
"show_name":"Untitled", \
"replay_gain": 0, \
"independent_event": True \
}
start_dt = datetime.utcnow() + timedelta(seconds=2)
end_dt = datetime.utcnow() + timedelta(seconds=6)
media_schedule[start_dt] = {"id": 5, \
"type":"file", \
"row_id":9, \
"uri":"", \
"dst":"/home/martin/Music/ipod/Good Charlotte - bloody valentine.mp3", \
"fade_in":0, \
"fade_out":0, \
"cue_in":0, \
"cue_out":300, \
"start": start_dt, \
"end": end_dt, \
"show_name":"Untitled", \
"replay_gain": 0, \
"independent_event": True \
}
pypoLiq_q.put(media_schedule)
plq.join()

38
python_apps/pypo/pypo/timeout.py Normal file
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import threading
import pypofetch
def __timeout(func, timeout_duration, default, args, kwargs):
class InterruptableThread(threading.Thread):
def __init__(self):
threading.Thread.__init__(self)
self.result = default
def run(self):
self.result = func(*args, **kwargs)
first_attempt = True
while True:
it = InterruptableThread()
it.start()
if not first_attempt:
timeout_duration = timeout_duration * 2
it.join(timeout_duration)
if it.isAlive():
"""Restart Liquidsoap and try the command one more time. If it
fails again then there is something critically wrong..."""
if first_attempt:
#restart liquidsoap
pypofetch.PypoFetch.ref.restart_liquidsoap()
else:
raise Exception("Thread did not terminate")
else:
return it.result
first_attempt = False
def ls_timeout(f, timeout=15, default=None):
def new_f(*args, **kwargs):
return __timeout(f, timeout, default, args, kwargs)
return new_f