CC-2607: Abilitiy to adjust stream bitrate, type, etc from the UI

interface

- dummy page "Stream Setting" page for the test
- StreamSetting model is added
- set owner and group as 'pypo' for liquidsoap.cfg
- pypofech handle 'update_stream_setting' command

airtime_mvc/application/configs/navigation.php

@@ -58,6 +58,12 @@ $pages = array(
                 'module'     => 'default',
                 'controller' => 'Preference',
                 'action'     => 'directory-config'
+            ),
+            array(
+                'label'      => 'Stream Setting',
+                'module'     => 'default',
+                'controller' => 'Preference',
+                'action'     => 'stream-setting'
             )
         )
     ),

airtime_mvc/application/controllers/ApiController.php

@@ -609,7 +609,7 @@ class ApiController extends Zend_Controller_Action
     }
     
     public function getStreamSettingAction() {
-        global $CC_CONFIG, $CC_DBC;
+        global $CC_CONFIG;
         
         $request = $this->getRequest();
         $api_key = $request->getParam('api_key');
@@ -619,12 +619,8 @@ class ApiController extends Zend_Controller_Action
             print 'You are not allowed to access this resource.';
             exit;
         }
-        $sql = "SELECT *"
-                ." FROM cc_stream_setting";
 
-        $rows = $CC_DBC->getAll($sql);
+        $this->view->msg = Application_Model_StreamSetting::getStreamSetting();
-
-        $this->view->msg = $rows;
     }
 }
 

airtime_mvc/application/controllers/PreferenceController.php

@@ -14,6 +14,7 @@ class PreferenceController extends Zend_Controller_Action
                     ->addActionContext('reload-watch-directory', 'json')
                     ->addActionContext('remove-watch-directory', 'json')
                     ->addActionContext('is-import-in-progress', 'json')
+                    ->addActionContext('change-stream-setting', 'json')
                     ->initContext();
     }
 
@@ -82,6 +83,16 @@ class PreferenceController extends Zend_Controller_Action
 
         $this->view->form = $watched_dirs_pref;
     }
+    
+    public function streamSettingAction()
+    {
+        $request = $this->getRequest();
+        $baseUrl = $request->getBaseUrl();
+        
+        $this->view->headScript()->appendFile($baseUrl.'/js/airtime/preferences/streamsetting.js','text/javascript');
+        
+        $this->view->form = new Application_Form_StreamSetting();
+    }
 
     public function serverBrowseAction()
     {
@@ -134,6 +145,16 @@ class PreferenceController extends Zend_Controller_Action
 
         $this->view->subform = $watched_dirs_form->render();
     }
+    
+    public function changeStreamSettingAction()
+    {
+        $data = array();
+        $data['setting'] = Application_Model_StreamSetting::getStreamSetting();
+        RabbitMq::SendMessageToPypo("update_stream_setting", $data);
+        
+        $form = new Application_Form_StreamSetting();
+        $this->view->subform = $form->render();
+    }
 
     public function reloadWatchDirectoryAction()
     {

airtime_mvc/application/forms/StreamSetting.php

@@ -0,0 +1,13 @@
+<?php
+
+class Application_Form_StreamSetting extends Zend_Form_SubForm
+{
+
+    public function init()
+    {
+        $this->setDecorators(array(
+            array('ViewScript', array('viewScript' => 'form/stream_setting.phtml'))
+        ));
+    }
+}
+

airtime_mvc/application/models/RabbitMq.php

@@ -57,7 +57,7 @@ class RabbitMq
         $channel = $conn->channel();
         $channel->access_request($CC_CONFIG["rabbitmq"]["vhost"], false, false, true, true);
 
-        $EXCHANGE = 'airtime-schedule';
+        $EXCHANGE = 'airtime-pypo';
         $channel->exchange_declare($EXCHANGE, 'direct', false, true);
 
         $data = json_encode($md);

airtime_mvc/application/models/StreamSetting.php

@@ -0,0 +1,14 @@
+<?php
+class Application_Model_StreamSetting {
+    public function __construct(){
+        
+    }
+    public static function getStreamSetting(){
+        global $CC_DBC;
+        $sql = "SELECT *"
+                ." FROM cc_stream_setting";
+
+        $rows = $CC_DBC->getAll($sql);
+        return $rows;
+    }
+}

airtime_mvc/application/views/scripts/form/stream_setting.phtml

@@ -0,0 +1 @@
+<input id="change_setting" type="button" value="change setting"></input>

airtime_mvc/application/views/scripts/preference/stream-setting.phtml

@@ -0,0 +1,4 @@
+<div id="stream-setting-section" class="ui-widget ui-widget-content block-shadow simple-formblock clearfix padded-strong manage-folders">
+<h2>Stream Setting</h2>
+<?php echo $this->form; ?>
+</div>

airtime_mvc/public/js/airtime/preferences/streamsetting.js

@@ -0,0 +1,13 @@
+$(document).ready(function() {
+
+    $('#change_setting').click(function(){
+        var url;
+        
+        url = "/Preference/change-stream-setting";
+
+        $.post(url,
+            {format: "json"}
+        );
+    });
+
+});

install_minimal/include/AirtimeIni.php

@@ -81,6 +81,11 @@ class AirtimeIni
         if (!copy(__DIR__."/../../python_apps/pypo/liquidsoap_scripts/liquidsoap.cfg", AirtimeIni::CONF_FILE_LIQUIDSOAP)){
             echo "Could not copy liquidsoap.cfg to /etc/airtime/. Exiting.";
             exit(1);
+        }else{
+            if (!chown(AirtimeIni::CONF_FILE_LIQUIDSOAP, "pypo") || !chgrp(AirtimeIni::CONF_FILE_LIQUIDSOAP, "pypo") ){
+                echo "Could not set ownership of liquidsoap.cfg to 'pypo'. Exiting.";
+                exit(1);
+            }
         }
         if (!copy(__DIR__."/../../python_apps/media-monitor/media-monitor.cfg", AirtimeIni::CONF_FILE_MEDIAMONITOR)){
             echo "Could not copy media-monitor.cfg to /etc/airtime/. Exiting.";

python_apps/api_clients/api_client.py

@@ -528,7 +528,7 @@ class AirTimeApiClient(ApiClientInterface):
         return response
     
     def get_stream_setting(self):
-        #logger = logging.getLogger()
+        logger = logging.getLogger()
         try:
             url = "http://%s:%s/%s/%s" % (self.config["base_url"], str(self.config["base_port"]), self.config["api_base"], self.config["get_stream_setting"])
             
@@ -538,7 +538,7 @@ class AirTimeApiClient(ApiClientInterface):
             response = json.loads(response)
         except Exception, e:
             response = None
-            #logger.error("Exception: %s", e)
+            logger.error("Exception: %s", e)
 
         return response
 

python_apps/pypo/pypofetch.py

@@ -13,6 +13,7 @@ from threading import Thread
 from subprocess import Popen, PIPE
 from datetime import datetime
 from datetime import timedelta
+import filecmp
 
 # For RabbitMQ
 from kombu.connection import BrokerConnection
@@ -37,17 +38,14 @@ except Exception, e:
     logger.error('Error loading config file: %s', e)
     sys.exit()
 
-# Yuk - using a global, i know!
-SCHEDULE_PUSH_MSG = []
-
 """
 Handle a message from RabbitMQ, put it into our yucky global var.
 Hopefully there is a better way to do this.
 """
-def handle_message(body, message):
+"""def handle_message(body, message):
     logger = logging.getLogger('fetch')
     global SCHEDULE_PUSH_MSG
-    logger.info("Received schedule from RabbitMQ: " + message.body)
+    logger.info("Received event from RabbitMQ: " + message.body)
     
     m =  json.loads(message.body)
     command = m['event_type']
@@ -59,10 +57,10 @@ def handle_message(body, message):
         logger.info("Setting timezone to %s", m['timezone'])
         os.environ['TZ'] = m['timezone']
         time.tzset()
-        
+    elif (command == 'update_stream_setting'):
+        logger.info("Updating stream setting: %s", m['setting'])
     # ACK the message to take it off the queue
-    message.ack()
+    message.ack()"""
-
 
 class PypoFetch(Thread):
     def __init__(self, q):
@@ -71,26 +69,103 @@ class PypoFetch(Thread):
         self.api_client = api_client.api_client_factory(config)
         self.set_export_source('scheduler')
         self.queue = q
+        self.schedule_data = []
         logger.info("PypoFetch: init complete")
 
     def init_rabbit_mq(self):
         logger = logging.getLogger('fetch')
         logger.info("Initializing RabbitMQ stuff")
         try:
-            schedule_exchange = Exchange("airtime-schedule", "direct", durable=True, auto_delete=True)
+            schedule_exchange = Exchange("airtime-pypo", "direct", durable=True, auto_delete=True)
             schedule_queue = Queue("pypo-fetch", exchange=schedule_exchange, key="foo")
             self.connection = BrokerConnection(config["rabbitmq_host"], config["rabbitmq_user"], config["rabbitmq_password"], "/")
             channel = self.connection.channel()
             consumer = Consumer(channel, schedule_queue)
-            consumer.register_callback(handle_message)
+            consumer.register_callback(self.handle_message)
             consumer.consume()
         except Exception, e:
             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, body, message):
+        logger = logging.getLogger('fetch')
+        logger.info("Received event from RabbitMQ: " + message.body)
+        
+        m =  json.loads(message.body)
+        command = m['event_type']
+        logger.info("Handling command: " + command)
+    
+        if(command == 'update_schedule'):
+            self.schedule_data  = m['schedule']
+            self.process_schedule(self.schedule_data, "scheduler", False)
+        elif (command == 'update_timezone'):
+            logger.info("Setting timezone to %s", m['timezone'])
+            os.environ['TZ'] = m['timezone']
+            time.tzset()
+        elif (command == 'update_stream_setting'):
+            logger.info("Updating stream setting: %s", m['setting'])
+            self.regenerateLiquidsoapConf(m['setting'])
+        # ACK the message to take it off the queue
+        message.ack()
+        
+    def regenerateLiquidsoapConf(self, setting):
+        logger = logging.getLogger('fetch')
+        existing = {}
+        # create a temp file
+        fh = open('/etc/airtime/liquidsoap.cfg', 'r')
+        # read existing conf file and build dict
+        while 1:
+            line = fh.readline()
+            if not line:
+                break;
+            key, value = line.split('=')
+            key = key.strip()
+            value = value.strip()
+            value = value.replace('"', '')
+            if value == "dummy_string" or value == "0":
+                value = ''
+            existing[key] =  value
+        fh.close()
+        # flag for any change in cofig
+        change = False
+        
+        # look for changes
+        for s in setting:
+            if not s[u'value'] == existing[s[u'keyname']]:
+                logger.info("Keyname: %s, Curent value: %s, New Value: %s", s[u'keyname'], s[u'value'], existing[s[u'keyname']])
+                change = True
+        # rewrite
+        if change:
+            fh = open('/etc/airtime/liquidsoap.cfg', 'w')
+            logger.info("Rewriting liquidsoap.cfg...")
+            for d in setting:
+                buffer = d[u'keyname'] + " = "
+                if(d[u'type'] == 'string'):
+                    temp = d[u'value']
+                    if(temp == ""):
+                        temp = "dummy_string"
+                    buffer += "\"" + temp + "\""
+                else:
+                    temp = d[u'value']
+                    if(temp == ""):
+                        temp = "0"
+                    buffer += temp
+                buffer += "\n"
+                fh.write(buffer)
+            fh.close()
+            # restart playout
+            logger.info("Restarting airtime-playout...")
+            p = Popen("/etc/init.d/airtime-playout restart >/dev/null 2>&1", shell=True)
+            sts = os.waitpid(p.pid, 0)[1]
+        else:
+            logger.info("No change detected in setting...")
         
-
     def set_export_source(self, export_source):
         logger = logging.getLogger('fetch')
         self.export_source = export_source
@@ -379,9 +454,9 @@ class PypoFetch(Thread):
 
         # Bootstrap: since we are just starting up, we need to grab the
         # most recent schedule.  After that we can just wait for updates. 
-        status, schedule_data = self.api_client.get_schedule()
+        status, self.schedule_data = self.api_client.get_schedule()
         if status == 1:
-            self.process_schedule(schedule_data, "scheduler", True)                
+            self.process_schedule(self.schedule_data , "scheduler", True)                
         logger.info("Bootstrap complete: got initial copy of the schedule")
 
         loops = 1        
@@ -391,15 +466,11 @@ class PypoFetch(Thread):
                 # Wait for messages from RabbitMQ.  Timeout if we
                 # dont get any after POLL_INTERVAL.
                 self.connection.drain_events(timeout=POLL_INTERVAL)
-                # Hooray for globals!
+            except Exception, e:    
-                schedule_data = SCHEDULE_PUSH_MSG
-                status = 1
-            except:    
                 # We didnt get a message for a while, so poll the server
                 # to get an updated schedule. 
-                status, schedule_data = self.api_client.get_schedule()
+                logger.info("Exception %s", e)
-            
+                status, self.schedule_data = self.api_client.get_schedule()
-            if status == 1:
+                self.process_schedule(self.schedule_data, "scheduler", False)
-                self.process_schedule(schedule_data, "scheduler", False)                
             loops += 1