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CC-3336: Refactor schedule API used by pypo 

-done
This commit is contained in:
Martin Konecny 2012-02-29 21:27:42 -05:00
parent 08048cd403
commit 92f19139b9
5 changed files with 46 additions and 65 deletions
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24
airtime_mvc/application/controllers/ApiController.php
View File

@ -27,6 +27,7 @@ class ApiController extends Zend_Controller_Action
->addActionContext('live-chat', 'json')
->addActionContext('update-file-system-mount', 'json')
->addActionContext('handle-watched-dir-missing', 'json')
->addActionContext('rabbitmq-do-push', 'json')
->initContext();
}
@ -318,6 +319,7 @@ class ApiController extends Zend_Controller_Action
}
}
/*
public function notifyScheduleGroupPlayAction()
{
global $CC_CONFIG;
@ -357,6 +359,7 @@ class ApiController extends Zend_Controller_Action
exit;
}
}
*/
public function recordedShowsAction()
{
@ -903,5 +906,26 @@ class ApiController extends Zend_Controller_Action
$dir = base64_decode($request->getParam('dir'));
Application_Model_MusicDir::removeWatchedDir($dir, false);
}
/* This action is for use by our dev scripts, that make
* a change to the database and we want rabbitmq to send
* out a message to pypo that a potential change has been made. */
public function rabbitmqDoPushAction(){
global $CC_CONFIG;
$request = $this->getRequest();
$api_key = $request->getParam('api_key');
if (!in_array($api_key, $CC_CONFIG["apiKey"]))
{
header('HTTP/1.0 401 Unauthorized');
print 'You are not allowed to access this resource.';
exit;
}
Logging::log("Notifying RabbitMQ to send message to pypo");
Application_Model_RabbitMq::PushSchedule();
}
}

34
python_apps/api_clients/api_client.py
View File

@ -81,14 +81,6 @@ class ApiClientInterface:
def get_media(self, src, dst):
pass
# Implementation: optional
#
# Called from: push loop
#
# Tell server that the scheduled *playlist* has started.
def notify_scheduled_item_start_playing(self, pkey, schedule):
pass
# Implementation: optional
# You dont actually have to implement this function for the liquidsoap playout to work.
#
@ -285,32 +277,6 @@ class AirTimeApiClient(ApiClientInterface):
except Exception, e:
logger.error("%s", e)
"""
Tell server that the scheduled *playlist* has started.
"""
def notify_scheduled_item_start_playing(self, pkey, schedule):
logger = self.logger
playlist = schedule[pkey]
schedule_id = playlist["schedule_id"]
url = "http://%s:%s/%s/%s" % (self.config["base_url"], str(self.config["base_port"]), self.config["api_base"], self.config["update_item_url"])
url = url.replace("%%schedule_id%%", str(schedule_id))
logger.debug(url)
url = url.replace("%%api_key%%", self.config["api_key"])
try:
response = urllib.urlopen(url)
response = json.loads(response.read())
logger.info("API-Status %s", response['status'])
logger.info("API-Message %s", response['message'])
except Exception, e:
logger.error("Unable to connect - %s", e)
return response
"""
This is a callback from liquidsoap, we use this to notify about the
currently playing *song*. We get passed a JSON string which we handed to

2
python_apps/pypo/pypo-notify.py
View File

@ -34,7 +34,7 @@ import json
from configobj import ConfigObj
# custom imports
from util import *
#from util import *
from api_clients import *
# Set up command-line options

13
python_apps/pypo/pypofetch.py
View File

@ -336,7 +336,7 @@ class PypoFetch(Thread):
if self.handle_media_file(media_item, dst):
entry = self.create_liquidsoap_annotation(media_item, dst)
entry['show_name'] = "TODO"
media_item['show_name'] = "TODO"
media_item["annotation"] = entry
except Exception, e:
@ -346,7 +346,7 @@ class PypoFetch(Thread):
def create_liquidsoap_annotation(self, media, dst):
pl_entry = \
entry = \
'annotate:media_id="%s",liq_start_next="%s",liq_fade_in="%s",liq_fade_out="%s",liq_cue_in="%s",liq_cue_out="%s",schedule_table_id="%s":%s' \
% (media['id'], 0, \
float(media['fade_in']) / 1000, \
@ -355,15 +355,6 @@ class PypoFetch(Thread):
float(media['cue_out']), \
media['row_id'], dst)
"""
Tracks are only added to the playlist if they are accessible
on the file system and larger than 0 bytes.
So this can lead to playlists shorter than expectet.
(there is a hardware silence detector for this cases...)
"""
entry = dict()
entry['type'] = 'file'
entry['annotate'] = pl_entry
return entry
def check_for_previous_crash(self, media_item):

38
python_apps/pypo/pypopush.py
View File

@ -39,9 +39,11 @@ class PypoPush(Thread):
self.media = dict()
self.liquidsoap_state_play = True
self.push_ahead = 30
self.push_ahead = 10
self.last_end_time = 0
self.logger = logging.getLogger('push')
def push(self):
"""
The Push Loop - the push loop periodically checks if there is a playlist
@ -49,7 +51,6 @@ class PypoPush(Thread):
If yes, the current liquidsoap playlist gets replaced with the corresponding one,
then liquidsoap is asked (via telnet) to reload and immediately play it.
"""
logger = logging.getLogger('push')
timenow = time.time()
# get a new schedule from pypo-fetch
@ -57,8 +58,8 @@ class PypoPush(Thread):
# make sure we get the latest schedule
while not self.queue.empty():
self.media = self.queue.get()
logger.debug("Received data from pypo-fetch")
logger.debug('media %s' % json.dumps(self.media))
self.logger.debug("Received data from pypo-fetch")
self.logger.debug('media %s' % json.dumps(self.media))
media = self.media
@ -77,17 +78,13 @@ class PypoPush(Thread):
"""
If the media item starts in the next 30 seconds, push it to the queue.
"""
logger.debug('Preparing to push media item scheduled at: %s', key)
self.logger.debug('Preparing to push media item scheduled at: %s', key)
if self.push_to_liquidsoap(media_item):
logger.debug("Pushed to liquidsoap, updating 'played' status.")
self.logger.debug("Pushed to liquidsoap, updating 'played' status.")
currently_on_air = True
self.liquidsoap_state_play = True
# Call API to update schedule states
logger.debug("Doing callback to server to update 'played' status.")
self.api_client.notify_scheduled_item_start_playing(key, schedule)
def push_to_liquidsoap(self, media_item):
"""
@ -133,15 +130,15 @@ class PypoPush(Thread):
#Return the time as a floating point number expressed in seconds since the epoch, in UTC.
epoch_now = time.time()
logger.debug("Epoch start: %s" % epoch_start)
logger.debug("Epoch now: %s" % epoch_now)
self.logger.debug("Epoch start: %s" % epoch_start)
self.logger.debug("Epoch now: %s" % epoch_now)
sleep_time = epoch_start - epoch_now
if sleep_time < 0:
sleep_time = 0
logger.debug('sleeping for %s s' % (sleep_time))
self.logger.debug('sleeping for %s s' % (sleep_time))
time.sleep(sleep_time)
def telnet_to_liquidsoap(self, media_item):
@ -156,25 +153,28 @@ class PypoPush(Thread):
#tn.write(("vars.pypo_data %s\n"%liquidsoap_data["schedule_id"]).encode('utf-8'))
annotation = media_item['annotation']
tn.write('queue.push %s\n' % annotation.encode('utf-8'))
msg = 'queue.push %s\n' % annotation.encode('utf-8')
tn.write(msg)
self.logger.debug(msg)
show_name = media_item['show_name']
tn.write('vars.show_name %s\n' % show_name.encode('utf-8'))
msg = 'vars.show_name %s\n' % show_name.encode('utf-8')
tn.write(msg)
self.logger.debug(msg)
tn.write("exit\n")
logger.debug(tn.read_all())
self.logger.debug(tn.read_all())
def run(self):
loops = 0
heartbeat_period = math.floor(30/PUSH_INTERVAL)
logger = logging.getLogger('push')
while True:
if loops % heartbeat_period == 0:
logger.info("heartbeat")
self.logger.info("heartbeat")
loops = 0
try: self.push()
except Exception, e:
logger.error('Pypo Push Exception: %s', e)
self.logger.error('Pypo Push Exception: %s', e)
time.sleep(PUSH_INTERVAL)
loops += 1