libraries/exceptions/exception_logger.py

+#
+#  engine
+#
+#  Playout Daemon for autoradio project
+#
+#
+#  Copyright (C) 2017-2018 Gottfried Gaisbauer <gottfried.gaisbauer@servus.at>
+#
+#  This file is part of engine.
+#
+#  engine 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
+#  any later version.
+#
+#  engine 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 engine. If not, see <http://www.gnu.org/licenses/>.
+#
+
+import simplejson
+import logging
+
+
+class ExceptionLogger:
+    logger = None
+    error_data = None
+    job_result = None
+
+    def __init__(self):
+        self.logger = logging.getLogger("AuraEngine")
+
+    # ------------------------------------------------------------------------------------------ #
+    def __get_error__(self, job, errornumber, data):
+        """
+        Privat: Ermittelt Fehlermeldung, Job-Name (Klassenmethode) und Fehlercode für den Job aus error/controller_error.js
+        @type errornumber:  string
+        @param errornumber: Die interne Fehlernummer der aufrufenden Methode
+        """
+
+        if data is None:
+            data = {}
+        if type(data) == type(str()):
+            data = simplejson.loads(data)
+
+        has_data = isinstance(data, (dict)) and len(data) > 0
+
+        if job in self.error_data:
+            err_msg = self.error_data[job][errornumber]
+            err_id = self.error_data[job]['id'] + str(errornumber)
+            if has_data:
+                for key in data.keys():
+                    err_msg = err_msg.replace('::' + key + '::', str(data[key]))
+            data['message'] = err_msg
+            data['job'] = job
+            data['code'] = err_id
+
+        return data
+
+    # ------------------------------------------------------------------------------------------ #
+    def success(self, job, data=None, errnum='00', value=''):
+        """
+        Erfolgsmeldung loggen
+        @type errnum:    string
+        @param errnum:   Errornummer der aufrufenden Funktion
+        @type value:     string
+        @param value:    Optionaler Wert
+        @type section:   string
+        @param section:  Gültigkeitsbereich
+        """
+        error = self.__get_error__(job, errnum, data)
+        self.job_result = {'message': error['message'],
+                           'code': error['code'],
+                           'success': 'success',
+                           'job': error['job'],
+                           'value': value}
+        self.logger.debug(job + " successfully done " + str(self.job_result))
+
+    # ------------------------------------------------------------------------------------------ #
+    def info(self, job, data=None, errnum='01', value=''):
+        """
+        Info loggen
+        @type errnum:    string
+        @param errnum:   Errornummer der aufrufenden Funktion
+        @type value:     string
+        @param value:    Optionaler Wert
+        @type section:   string
+        @param section:  Gültigkeitsbereich
+        """
+        error = self.__get_error__(job, errnum, data)
+        self.job_result = {'message': error['message'],
+                           'code': error['code'],
+                           'success': 'info',
+                           'job': error['job'],
+                           'value': value}
+        self.logger.info(str(self.job_result))
+
+
+    # ------------------------------------------------------------------------------------------ #
+    def warning(self, job, data=None, errnum='01', value=''):
+        """
+        Warnung loggen
+        @type errnum:    string
+        @param errnum:   Errornummer der aufrufenden Funktion
+        @type value:     string
+        @param value:    Optionaler Wert
+        """
+        error = self.__get_error__(job, errnum, data)
+        self.job_result = {'message': error['message'],
+                           'code': error['code'],
+                           'success': 'warning',
+                           'job': error['job'],
+                           'value': value}
+        self.logger.warning(str(self.job_result))
+
+    # ------------------------------------------------------------------------------------------ #
+    def error(self, job, data=None, errnum='01', value=''):
+        """
+        Error loggen
+        @type errnum:    string
+        @param errnum:   Errornummer der aufrufenden Funktion
+        @type value:     string
+        @param value:    Optionaler Wert
+        """
+        error = self.__get_error__(job, errnum, data)
+        self.job_result = {'message': error['message'],
+                           'code': error['code'],
+                           'success': 'error',
+                           'job': error['job'],
+                           'value': value}
+        self.logger.error(str(self.job_result))
+
+    # ------------------------------------------------------------------------------------------ #
+    def fatal(self, job, data=None, errnum='01', value='', section='execjob'):
+        """
+        Fatal error loggen
+        @type errnum:    string
+        @param errnum:   Errornummer der aufrufenden Funktion
+        @type value:     string
+        @param value:    Optionaler Wert
+        @type section:   string
+        @param section:  Gültigkeitsbereich
+        """
+        error = self.__get_error__(job, errnum, data)
+        self.job_result = {'message': error['message'],
+                           'code': error['code'],
+                           'success': 'fatal',
+                           'job': error['job'],
+                           'value': value,
+                           'section': section}
+        self.logger.critical(str(self.job_result))
\ No newline at end of file

modules/base/config.py

+#
+#  engine
+#
+#  Playout Daemon for autoradio project
+#
+#  Copyright 2014 BFR <info@freie-radios.de>
+#  Copyright (C) 2017-2018 Gottfried Gaisbauer <gottfried.gaisbauer@servus.at>
+#
+#  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; Version 3 of the License
+#
+#  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, the license can be downloaded here:
+#
+#  http://www.gnu.org/licenses/gpl.html
+
+# Meta
+__version__ = '0.1.1'
+__license__ = "GNU General Public License (GPL) Version 3"
+__version_info__ = (0, 1, 1)
+__author__ = 'Michael Liebler <michael-liebler@radio-z.net>'
+
+# massively enhanced by Gottfried Gaisbauer <gottfried.gaisbauer@servus.at>
+
+"""
+Comba Base Class  - lade Config
+"""
+import os
+import sys
+import socket
+import logging
+
+from configparser import ConfigParser
+
+
+class ConfigReader(object):
+    ini_path = ""
+    logger = None
+
+    def __init__(self):
+        self.logger = logging.getLogger("AuraEngine")
+
+    def set(self, key, value):
+        """
+        Set a property
+        @type    key: string
+        @param   key: The Key
+        @type    value: mixed
+        @param   value: Beliebiger Wert
+        """
+        try:
+            self.__dict__[key] = int(value)
+        except:
+            self.__dict__[key] = str(value)
+
+    # ------------------------------------------------------------------------------------------ #
+    def get(self, key, default=None):
+        """
+        get a loaded property
+        @type    key: string
+        @param   key: Der Key
+        @type    default: mixed
+        @param   default: Beliebiger Wert
+        """
+
+        if key not in self.__dict__:
+            if default:
+                self.set(key, default)
+            else:
+                self.logger.warning("Key " + key + " not found in configfile " + self.ini_path + "!")
+                return None
+
+        if key == "loglevel":
+            loglvl = self.__dict__[key]
+
+            if loglvl == "debug":
+                return logging.DEBUG
+            elif loglvl == "info":
+                return logging.INFO
+            elif loglvl == "warning":
+                return logging.WARNING
+            elif loglvl == "error":
+                return logging.ERROR
+            else:
+                return logging.CRITICAL
+
+        if key == "debug":
+            return self.__dict__[key].count("y")
+
+        return self.__dict__[key]
+
+    # ------------------------------------------------------------------------------------------ #
+    def load_config(self):
+        """
+        Set config defaults and load settings from file
+        :return:
+        """
+        self.ini_path = self.get('configpath', '/etc/aura/engine.ini')
+
+        if not os.path.isfile(self.ini_path):
+            self.logger.critical(self.ini_path + " not found  :(")
+            sys.exit(1)
+
+        # INI einlesen
+        f = open(self.ini_path, 'r')
+        ini_str = f.read()
+        f.close()
+
+        config_parser = ConfigParser()
+        try:
+            config_parser.read_string(ini_str)
+        except Exception as e:
+            self.logger.critical("Cannot read " + self.ini_path + "! Reason: " + str(e))
+            sys.exit(0)
+
+        for section in config_parser.sections():
+            for key, value in config_parser.items(section):
+                v = config_parser.get(section, key).replace('"', '').strip()
+                self.set(key, v)
+
+        self.set("install_dir", os.path.realpath(__file__ + "../../../.."))
+
+

modules/cli_tool/padavan.py

+#
+#  engine
+#
+#  Playout Daemon for autoradio project
+#
+#
+#  Copyright (C) 2017-2018 Gottfried Gaisbauer <gottfried.gaisbauer@servus.at>
+#
+#  This file is part of engine.
+#
+#  engine 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
+#  any later version.
+#
+#  engine 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 engine. If not, see <http://www.gnu.org/licenses/>.
+#
+
+import simplejson
+
+from libraries.enum.auraenumerations import RedisChannel, TerminalColors
+from modules.communication.redis.adapter import ClientRedisAdapter, ServerRedisAdapter
+from modules.communication.redis.messenger import RedisMessenger
+from libraries.database.broadcasts import AuraDatabaseModel
+
+
+class Padavan:
+    args = None
+    config = None
+
+    lsc = None
+    zmqclient = None
+    redisclient = None
+    stringreply = ""
+
+    # ------------------------------------------------------------------------------------------ #
+    def __init__(self, args, config):
+        self.args = args
+        self.config = config
+
+    # ------------------------------------------------------------------------------------------ #
+    def meditate(self):
+        if self.args.fetch_new_programme:
+            self.fetch_new_programme()
+
+        elif self.args.get_active_mixer:
+            self.get_active_mixer()
+
+        elif self.args.get_mixer_status:
+            self.get_mixer_status()
+
+        elif self.args.get_act_programme:
+            self.get_act_programme()
+
+        elif self.args.get_connection_status:
+            self.get_connection_status()
+
+        elif self.args.shutdown:
+            self.shutdown()
+
+        elif self.args.redis_message:
+            self.redis_message(self.args.redis_message[0], self.args.redis_message[1])
+
+        elif self.args.select_mixer != -1:
+            self.select_mixer(self.args.select_mixer)
+
+        elif self.args.deselect_mixer != -1:
+            self.select_mixer(self.args.deselect_mixer, False)
+
+        elif self.args.set_volume:
+            self.set_volume(self.args.set_volume[0], self.args.set_volume[1])
+
+        elif self.args.swap_playlist_entries:
+            self.swap_playlist_entries(self.args.swap_playlist_entries[0], self.args.swap_playlist_entries[1])
+
+        elif self.args.delete_playlist_entry:
+            self.delete_playlist_entry(self.args.delete_playlist_entry[0])
+
+        elif self.args.insert_playlist_entry:
+            self.insert_playlist_entry(self.args.insert_playlist_entry[0], self.args.insert_playlist_entry[1]) #, self.args.insert_playlist_entry[2])
+
+        elif self.args.print_message_queue:
+            self.print_message_queue()
+
+        elif self.args.get_file_for:
+            self.get_next_file(self.args.get_file_for)
+
+        elif self.args.set_file_for:
+            self.set_next_file(self.args.set_file_for[0], self.args.set_file_for[1])
+
+        elif self.args.now_playing:
+            print("")
+
+        elif self.args.init_player:
+            self.init_player()
+
+        elif self.args.recreatedb:
+            self.recreatedb()
+
+        # else:
+        #    raise Exception("")
+
+    # init liquid => faster exec time, when loading at runtime just what is needed
+    def init_liquidsoap_communication(self):
+        # import
+        from modules.communication.liquidsoap.communicator import LiquidSoapCommunicator
+
+        # init liquidsoap communication
+        self.lsc = LiquidSoapCommunicator(self.config)
+        # enable connection
+        self.lsc.enable_transaction()
+
+    def destroy_liquidsoap_communication(self):
+        # enable connection
+        self.lsc.disable_transaction()
+
+    def init_redis_communication(self, with_server=False):
+        self.redisclient = ClientRedisAdapter()
+
+        if with_server:
+            self.redisserver = ServerRedisAdapter()
+
+    def send_redis(self, channel, message):
+        self.init_redis_communication()
+        self.redisclient.publish(channel, message)
+
+    def send_and_wait_redis(self, channel, message, reply_channel):
+        self.init_redis_communication(True)
+        self.redisclient.publish(channel, message)
+        return self.redisserver.listen_for_one_message(reply_channel.value)
+
+    def shutdown(self):
+        self.send_redis("aura", "shutdown")
+        self.stringreply = "Shutdown message sent!"
+
+    def fetch_new_programme(self):
+        json_reply = self.send_and_wait_redis("aura", "fetch_new_programme", RedisChannel.FNP_REPLY)
+        if json_reply != "":
+            actprogramme = simplejson.loads(json_reply)
+            self.print_programme(actprogramme)
+        else:
+            print("No programme fetched")
+
+    def get_act_programme(self):
+        json_reply = self.send_and_wait_redis("aura", "get_act_programme", RedisChannel.GAP_REPLY)
+        actprogramme = simplejson.loads(json_reply)
+        self.print_programme(actprogramme)
+
+    def get_connection_status(self):
+        json_reply = self.send_and_wait_redis("aura", "get_connection_status", RedisChannel.GCS_REPLY)
+        connection_status = simplejson.loads(json_reply)
+        self.print_connection_status(connection_status)
+
+    def print_programme(self, programme):
+        for entry in programme:
+            self.stringreply += "idx: " + str(entry["programme_index"]) + \
+                " --- schedule id #" + str(entry["schedule_id"]) + "." + str(entry["entry_num"]) + \
+                " - show: " + entry["schedule"]["show_name"] + \
+                " - starts @ " + entry["entry_start"] + \
+                " - plays " + str(entry["source"]) + "\n"
+
+    def print_connection_status(self, connection_status):
+
+        if connection_status["pv"]:
+            self.stringreply = "Connection to pv:    " + TerminalColors.GREEN.value + " " + str(connection_status["pv"]) + TerminalColors.ENDC.value
+        else:
+            self.stringreply = "Connection to pv:    " + TerminalColors.RED.value + " " + str(connection_status["pv"]) + TerminalColors.ENDC.value
+
+        if connection_status["db"]:
+            self.stringreply += "\nConnection to db:    " + TerminalColors.GREEN.value + " " + str(connection_status["db"]) + TerminalColors.ENDC.value
+        else:
+            self.stringreply += "\nConnection to db:    " + TerminalColors.RED.value + " " + str(connection_status["db"]) + TerminalColors.ENDC.value
+
+        if connection_status["lqs"]:
+            self.stringreply += "\nConnection to lqs:   " + TerminalColors.GREEN.value + " " + str(connection_status["lqs"]) + TerminalColors.ENDC.value
+        else:
+            self.stringreply += "\nConnection to lqs:   " + TerminalColors.RED.value + " " + str(connection_status["lqs"]) + TerminalColors.ENDC.value
+
+        if connection_status["lqsr"]:
+            self.stringreply += "\nConnection to lqsr:  " + TerminalColors.GREEN.value + " " + str(connection_status["lqsr"]) + TerminalColors.ENDC.value
+        else:
+            self.stringreply += "\nConnection to lqsr:  " + TerminalColors.RED.value + " " + str(connection_status["lqsr"]) + TerminalColors.ENDC.value
+
+        if connection_status["tank"]:
+            self.stringreply += "\nConnection to tank:  " + TerminalColors.GREEN.value + " " + str(connection_status["tank"]) + TerminalColors.ENDC.value
+        else:
+            self.stringreply += "\nConnection to tank:  " + TerminalColors.RED.value + " " + str(connection_status["tank"]) + TerminalColors.ENDC.value
+
+        if connection_status["redis"]:
+            self.stringreply += "\nConnection to redis: " + TerminalColors.GREEN.value + " " + str(connection_status["redis"]) + TerminalColors.ENDC.value
+        else:
+            self.stringreply += "\nConnection to redis: " + TerminalColors.RED.value + " " + str(connection_status["redis"]) + TerminalColors.ENDC.value
+
+
+
+    def init_player(self):
+        self.stringreply = self.send_and_wait_redis("aura", "init_player", RedisChannel.IP_REPLY)
+
+    def recreatedb(self):
+        print("YOU WILL GET PROBLEMS DUE TO DATABASE BLOCKING IF aura.py IS RUNNING! NO CHECKS IMPLEMENTED SO FAR!")
+        x = AuraDatabaseModel()
+        x.recreate_db()
+        self.stringreply = "Database recreated!"
+
+    def redis_message(self, channel, message):
+        self.send_redis(channel, message)
+        self.stringreply = "Message '"+message+"' sent to channel '"+channel+"'"
+
+    def swap_playlist_entries(self, from_index, to_index):
+        json_reply = self.send_and_wait_redis("aura", "swap_playlist_entries " + str(from_index) + " " + str(to_index), RedisChannel.MPE_REPLY)
+        actprogramme = simplejson.loads(json_reply)
+        self.print_programme(actprogramme)
+
+    def delete_playlist_entry(self, index):
+        json_reply = self.send_and_wait_redis("aura", "delete_playlist_entry " + str(index), RedisChannel.DPE_REPLY)
+        actprogramme = simplejson.loads(json_reply)
+        self.print_programme(actprogramme)
+
+    def insert_playlist_entry(self, fromtime, source):
+        json_reply = self.send_and_wait_redis("aura", "insert_playlist_entry " + fromtime + " " + source, RedisChannel.IPE_REPLY)
+        actprogramme = simplejson.loads(json_reply)
+        self.print_programme(actprogramme)
+
+    def print_message_queue(self):
+        self.stringreply = self.send_and_wait_redis("aura", "print_message_queue", RedisChannel.PMQ_REPLY)
+
+    # LIQUIDSOAP #
+    def select_mixer(self, mixername, activate=True):
+        # init lqs
+        self.init_liquidsoap_communication()
+
+        # select mixer and return the feedback
+        self.stringreply = self.lsc.channel_activate(mixername, activate)
+
+        # disable connection
+        self.destroy_liquidsoap_communication()
+
+    def set_volume(self, mixernumber, volume):
+        # init lqs and enable comm
+        self.init_liquidsoap_communication()
+        self.stringreply = self.lsc.set_volume(mixernumber, volume)
+        # disable connection
+        self.destroy_liquidsoap_communication()
+
+    def get_active_mixer(self):
+        self.init_liquidsoap_communication()
+        am = self.lsc.get_active_mixer()
+
+        if len(am) == 0:
+            self.destroy_liquidsoap_communication()
+            raise Exception("Guru recognized a problem: No active source!!!")
+
+        self.stringreply = str(am)
+
+        # disable connection
+        self.destroy_liquidsoap_communication()
+
+    def get_mixer_status(self):
+        self.init_liquidsoap_communication()
+
+        status = self.lsc.get_mixer_status()
+
+        for k, v in status.items():
+            self.stringreply += "source: " + k + "\t status: " + v + "\n"
+
+        # disable connection
+        self.destroy_liquidsoap_communication()
+
+    # REDIS #
+    def get_next_file(self, type):
+        redis = RedisMessenger()
+
+        next_file = redis.get_next_file_for(type)
+        # "annotate:file_id='3541',length='400.0',title='Titel',artist='Artist',album='Album',canal='reggae':" +
+        #print(next_file)
+        if next_file == "":
+            next_file = "/var/audio/blank.flac"
+
+        #print("stringreply: "+next_file)
+        self.stringreply = next_file
+
+        self.send_redis("aura", "set_next_file " + type)
+
+    def set_next_file(self, type, file):
+        from modules.communication.redis.messenger import RedisMessenger
+        redis = RedisMessenger()
+
+        redis.set_next_file_for(type, file)
+        self.stringreply = "Set "+file+" for fallback '"+type+"'"

modules/communication/connection_tester.py

+#
+#  engine
+#
+#  Playout Daemon for autoradio project
+#
+#
+#  Copyright (C) 2017-2018 Gottfried Gaisbauer <gottfried.gaisbauer@servus.at>
+#
+#  This file is part of engine.
+#
+#  engine 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
+#  any later version.
+#
+#  engine 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 engine. If not, see <http://www.gnu.org/licenses/>.
+#
+
+import urllib
+import logging
+import simplejson
+
+from modules.communication.liquidsoap.communicator import LiquidSoapCommunicator
+from libraries.database.broadcasts import ScheduleEntry
+from libraries.base.config import AuraConfig
+
+
+class ConnectionTester(AuraConfig):
+
+    def __init__(self):
+        super(ConnectionTester, self).__init__()
+
+    def get_connection_status(self):
+        status = dict()
+        status["db"] = self.test_db_conn()
+        status["pv"] = self.test_pv_conn()
+        status["lqs"] = self.test_lqs_conn()
+        status["lqsr"] = False # self.test_lqsr_conn()
+        status["tank"] = self.test_tank_conn()
+        status["redis"] = self.test_redis_conn()
+
+        return simplejson.dumps(status)
+
+    def test_db_conn(self):
+        try:
+            ScheduleEntry.select_all()
+        except:
+            return False
+
+        return True
+
+    def test_lqs_conn(self):
+        try:
+            lsc = LiquidSoapCommunicator(self.config)
+            lsc.get_mixer_status()
+            return True
+
+        except Exception as e:
+            return False
+
+    def test_lqsr_conn(self):
+        try:
+            lsc = LiquidSoapCommunicator(self.config)
+            lsc.get_recorder_status()
+            return True
+
+        except Exception as e:
+            return False
+
+    def test_pv_conn(self):
+        return self.test_url_connection(self.config.get("calendarurl"))
+
+    def test_tank_conn(self):
+        # test load of playlist 1
+        return self.test_url_connection(self.config.get("importerurl")+"1")
+
+    def test_redis_conn(self):
+        from modules.communication.redis.adapter import ClientRedisAdapter
+        try:
+            cra = ClientRedisAdapter()
+            cra.publish("aura", "status")
+        except:
+            return False
+
+        return True
+
+    def test_url_connection(self, url):
+        try:
+            request = urllib.request.Request(url)
+            response = urllib.request.urlopen(request)
+            response.read()
+        except Exception as e:
+            return False
+
+        return True
\ No newline at end of file

modules/communication/liquidsoap/client.py

+#
+#  engine
+#
+#  Playout Daemon for autoradio project
+#
+#
+#  Copyright (C) 2017-2018 Gottfried Gaisbauer <gottfried.gaisbauer@servus.at>
+#
+#  This file is part of engine.
+#
+#  engine 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
+#  any later version.
+#
+#  engine 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 engine. If not, see <http://www.gnu.org/licenses/>.
+#
+
+import socket
+import urllib.parse
+import configparser
+import logging
+
+from multiprocessing import Lock
+
+from libraries.exceptions.auraexceptions import LQConnectionError
+
+
+""" 
+    LiquidSoapClient Class 
+    Connects to a LiquidSoap instance over a socket and sends commands to it
+"""
+
+
+class LiquidSoapClient:
+    mutex = None
+    logger = None
+    debug = False
+    socket_path = ""
+
+    def __init__(self, config, socket_filename):
+        """
+        Constructor
+        @type    socket_path: string
+        @param   socket_path: Der Pfad zum Socket des Liquidsoap-Scripts
+        """
+        self.logger = logging.getLogger("AuraEngine")
+        self.socket_path = config.get('socketdir') + '/' + socket_filename
+
+        self.logger.debug("LiquidSoapClient using socketpath: " + self.socket_path)
+
+        # init
+        self.mutex = Lock()
+        self.connected = False
+        self.can_connect = True
+        self.message = ''
+        self.socket = None
+        self.metareader = configparser.ConfigParser()
+
+    # ------------------------------------------------------------------------------------------ #
+    def connect(self):
+        """
+        Verbindung herstellen
+        """
+        try:
+            self.socket = socket.socket(socket.AF_UNIX, socket.SOCK_STREAM)
+            self.socket.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEADDR, 1)
+            self.socket.connect(self.socket_path)
+        except socket.error as e:
+            msg = "Cannot connect to socketpath " + self.socket_path + ". Reason: "+str(e)
+            self.logger.critical(msg)
+            self.can_connect = False
+            self.connected = False
+#            raise e
+        else:
+            self.can_connect = True
+            self.connected = True
+            return True
+
+    # ------------------------------------------------------------------------------------------ #
+    def is_connected(self):
+        return self.connected
+
+    # ------------------------------------------------------------------------------------------ #
+    def write(self, data):
+        """
+        Auf den Socket schreiben
+        @type    data: string
+        @param   data: Der String der gesendet wird
+        """
+        if self.connected:
+            self.socket.sendall(data.decode("UTF-8"))
+
+    # ------------------------------------------------------------------------------------------ #
+    def read_all(self, timeout=2):
+        """
+        Vom Socket lesen, bis dieser "END" sendet
+        @type    timeout: int
+        @param   timeout: Ein optionales Timeout
+        @rtype:  string
+        @return: Die Antwort des Liquidsoap-Servers
+        """
+        # make socket non blocking
+        # self.client.setblocking(0)
+
+        data = '';
+
+        try:
+            # set timeout
+            self.socket.settimeout(timeout)
+
+            # acquire the lock
+            self.mutex.acquire()
+
+            while True:
+                data += self.socket.recv(1).decode("utf-8")
+
+                # receive as long as we are not at the END or recv a Bye! from liquidsoap
+                if data.find("END\r\n") != -1 or data.find("Bye!\r\n") != -1:
+                    data.replace("END\r\n", "")
+                    break
+
+            # release the lock
+            self.mutex.release()
+
+        except Exception as e:
+            self.logger.error(str(e))
+            self.mutex.release()
+
+        return data
+
+    # ------------------------------------------------------------------------------------------ #
+    def read(self):
+        """
+        read from socket and store return value in self.message
+        @rtype:  string
+        @return: The answer of liquidsoap server
+        """
+        if self.connected:
+            ret = self.read_all().splitlines()
+
+            try:
+                last = ret.pop() # pop out end
+
+                if len(ret) > 1:
+                    self.message = str.join(" - ", ret)
+                elif len(ret) == 1:
+                    self.message = ret[0]
+
+                if last == "Bye!":
+                    self.message = last
+
+            except Exception as e:
+                self.logger.error(str(e))
+
+            return self.message
+
+    # ------------------------------------------------------------------------------------------ #
+    def close(self):
+        """
+        Quit senden und Verbindung schließen
+        """
+        if self.connected:
+            message = "quit\r"
+            self.socket.sendall(message.decode("UTF-8"))
+            self.socket.close()
+            self.connected = False
+
+    # ------------------------------------------------------------------------------------------ #
+    def command(self, namespace, command, param=""):
+        """
+        Kommando an Liquidosap senden
+        @type    command:   string
+        @param   command:   Kommando
+        @type    namespace: string
+        @param   namespace: Namespace/Kanal der angesprochen wird
+        @type    param:     mixed
+        @param   param:     ein optionaler Parameter
+        @rtype:  string
+        @return: Die Antwort des Liquidsoap-Servers
+        """
+
+        param = (param.strip() if param.strip() == "" else " " + urllib.parse.unquote(param.strip()))
+        if self.connected:
+            # print namespace + '.' + command + param + "\n"
+            if namespace is "":
+                message = str(command) + str(param) + str("\n")
+            else:
+                message = str(namespace) + str(".") + str(command) + str(param) + str("\n")
+
+            try:
+                self.logger.info("LiquidSoapClient sending to LiquidSoap Server: " + message[0:len(message)-1])
+
+                # send all the stuff over the socket to liquidsoap server
+                self.socket.sendall(message.encode())
+
+                self.logger.debug("LiquidSoapClient waiting for reply from LiquidSoap Server")
+
+                # wait for reply
+                self.read()
+
+                self.logger.info("LiquidSoapClient got reply: " + self.message)
+            except BrokenPipeError as e:
+                self.logger.error("Detected a problem with liquidsoap connection while sending: " + message + ". Reason: " + str(e) + "! Trying to reconnect.")
+                self.connect()
+                raise
+
+            except Exception as e:
+                self.logger.error("Unexpected error: " + str(e))
+                raise
+
+            return self.message
+        else:
+            msg = "LiquidsoapClient not connected to LiquidSoap Server"
+            self.logger.debug(msg)
+            raise LQConnectionError(msg)
+
+    # ------------------------------------------------------------------------------------------ #
+    def simplecommand(self, command):
+        """
+        Parameterloses Kommando ohne Namespace senden
+        @type    command:   string
+        @param   command:   Kommando
+        @rtype:  string
+        @return: Die Antwort des Liquidsoap-Servers
+        """
+
+        if self.connected:
+            message = str(command) + '\n'
+            self.socket.sendall(message.decode("UTF-8"))
+            self.read()
+            # self.client.close()
+            return self.message
+
+    # ------------------------------------------------------------------------------------------ #
+    def get_metadata(self, rid):
+        """
+        Parameterloses Kommando ohne Namespace senden
+        @type    rid:   string/int
+        @param   rid:   Die ID eines Requests
+        @rtype:  dict
+        @return: Die Metadaten als dict
+        """
+        meta = self.command('metadata ' + str(rid), 'request')
+
+        meta = '[root]\n' + meta
+        try:
+            self.metareader.read_string(meta)
+        except configparser.ParsingError as e:
+            self.logger.error("ParsingError. Reason: " + str(e))
+            return False
+        return self.metareader
+
+    # ------------------------------------------------------------------------------------------ #
+    def help(self):
+        """
+        get liquidsoap server help
+        @rtype:  string
+        @return: the response of the liquidsoap server
+        """
+        if self.connected:
+            self.command('help', '')
+            return self.message
+
+    # ------------------------------------------------------------------------------------------ #
+    def version(self):
+        """
+        Liquidsoap get version
+        @rtype:  string
+        @return: the response of the liquidsoap server
+        """
+        if self.connected:
+            message = 'version'
+            self.command(message, '')
+            return self.message
+
+    # ------------------------------------------------------------------------------------------ #
+    def uptime(self):
+        """
+        Liquidsoap get uptime
+        @rtype:  string
+        @return: Die Antwort des Liquidsoap-Servers
+        """
+
+        if self.connected:
+            self.command('uptime', '')
+            return self.message
+
+    # ------------------------------------------------------------------------------------------ #
+    def byebye(self):
+        """
+        Liquidsoap say byebye
+        @rtype:  string
+        @return: Die Antwort des Liquidsoap-Servers
+        """
+
+        if self.connected:
+            self.command("", "quit")
+            return self.message
\ No newline at end of file

modules/communication/liquidsoap/communicator.py

+#
+#  engine
+#
+#  Playout Daemon for autoradio project
+#
+#
+#  Copyright (C) 2017-2018 Gottfried Gaisbauer <gottfried.gaisbauer@servus.at>
+#
+#  This file is part of engine.
+#
+#  engine 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
+#  any later version.
+#
+#  engine 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 engine. If not, see <http://www.gnu.org/licenses/>.
+#
+
+import os
+import time
+import codecs
+import urllib
+import logging
+import tempfile
+import simplejson
+
+from modules.communication.liquidsoap.playerclient import LiquidSoapPlayerClient
+from modules.communication.liquidsoap.recorderclient import LiquidSoapRecorderClient
+from modules.communication.liquidsoap.initthread import LiquidSoapInitThread
+from modules.communication.mail.mail import AuraMailer
+
+from libraries.enum.auraenumerations import TerminalColors, ScheduleEntryType
+from libraries.exceptions.auraexceptions import LQConnectionError
+from libraries.database.broadcasts import TrackService
+from libraries.exceptions.exception_logger import ExceptionLogger
+
+""" 
+    LiquidSoapCommunicator Class 
+    Uses LiquidSoapClient, but introduces more complex commands, transactions and error handling
+"""
+
+class LiquidSoapCommunicator(ExceptionLogger):
+    client = None
+    lqcr = None
+    logger = None
+    transaction = 0
+    channels = None
+    scheduler = None
+    error_data = None
+    auramailer = None
+    aborttransaction = False
+    connection_attempts = 0
+
+    # ------------------------------------------------------------------------------------------ #
+    def __init__(self, config, logger=True):
+        """
+        Constructor
+        """
+        self.config = config
+        self.logger = logging.getLogger("AuraEngine")
+
+        self.client = LiquidSoapPlayerClient(config, "engine.sock")
+        # self.lqcr = LiquidSoapRecorderClient(config, "record.sock")
+
+        errors_file = self.config.get("install_dir") + "/errormessages/controller_error.js"
+        f = open(errors_file)
+        self.error_data = simplejson.load(f)
+        f.close()
+
+        self.auramailer = AuraMailer(self.config)
+
+    # ------------------------------------------------------------------------------------------ #
+    def set_volume(self, mixernumber, volume):
+        return self.__send_lqc_command__(self.client, "mixer", "volume", mixernumber, volume)
+
+    # ------------------------------------------------------------------------------------------ #
+    def get_active_mixer(self):
+        """
+        get active mixer in liquidsoap server
+        :return:
+        """
+        activeinputs = []
+
+        # enable more control over the connection
+        self.enable_transaction()
+
+        inputs = self.get_all_channels()
+
+        cnt = 0
+        for input in inputs:
+            status = self.__get_mixer_status__(cnt)
+
+            if "selected=true" in status:
+                activeinputs.append(input)
+
+            cnt = cnt + 1
+
+        self.disable_transaction()
+
+        return activeinputs
+
+    # ------------------------------------------------------------------------------------------ #
+    def get_active_channel(self):
+        """
+        gets active channel from programme
+        :return:
+        """
+        active_entry = self.scheduler.get_active_entry()
+        if active_entry is None:
+            return ""
+        return active_entry.type
+
+    # ------------------------------------------------------------------------------------------ #
+    def get_mixer_status(self):
+        inputstate = {}
+
+        self.enable_transaction()
+
+        inputs = self.get_all_channels()
+
+        cnt = 0
+        for input in inputs:
+            inputstate[input] = self.__get_mixer_status__(cnt)
+            cnt = cnt + 1
+
+        self.disable_transaction()
+
+        return inputstate
+
+    # ------------------------------------------------------------------------------------------ #
+    def get_recorder_status(self):
+        self.enable_transaction(self.lqcr)
+        recorder_state = self.__send_lqc_command__(self.lqcr, "record", "status")
+        self.disable_transaction(self.lqcr)
+
+        return recorder_state
+
+    # ------------------------------------------------------------------------------------------ #
+    def http_start_stop(self, start):
+        if start:
+            cmd = "start"
+        else:
+            cmd = "stop"
+
+        try:
+            self.enable_transaction()
+            self.__send_lqc_command__(self.client, "http", cmd)
+            self.disable_transaction()
+        except LQConnectionError as e:
+            # we already caught and handled this error in __send_lqc_command__, but we do not want to execute this function further
+            pass
+
+    # ------------------------------------------------------------------------------------------ #
+    def recorder_stop(self):
+        self.enable_transaction()
+
+        for i in range(5):
+            if self.config.get("rec_" + str(i)) == "y":
+                self.__send_lqc_command__(self.client, "recorder_" + str(i), "stop")
+
+        self.disable_transaction()
+
+    # ------------------------------------------------------------------------------------------ #
+    def recorder_start(self, num=-1):
+        self.enable_transaction()
+
+        if num == -1:
+            self.recorder_start_all()
+        else:
+            self.recorder_start_one(num)
+
+    # ------------------------------------------------------------------------------------------ #
+    def recorder_start_all(self):
+        self.enable_transaction()
+        for i in range(5):
+            self.recorder_start_one(i)
+        self.disable_transaction()
+
+    # ------------------------------------------------------------------------------------------ #
+    def recorder_start_one(self, num):
+
+        if self.config.get("rec_" + str(num)) == "y":
+            returnvalue = self.__send_lqc_command__(self.client, "recorder", str(num), "status")
+
+            if returnvalue == "off":
+                self.__send_lqc_command__(self.client, "recorder", str(num), "start")
+
+    # ------------------------------------------------------------------------------------------ #
+    def activate(self, entry):
+        active_type = self.scheduler.get_active_entry().type
+
+        try:
+            # enable transaction
+            self.enable_transaction()
+
+            if active_type == entry.type:
+                # push something to active channel
+                self.activate_same_channel(entry)
+            else:
+                # switch to another channel
+                self.activate_different_channel(entry, active_type)
+
+            # disable conn
+            self.disable_transaction()
+
+            # insert playlist entry
+            self.insert_track_service_entry(entry)
+        except LQConnectionError as e:
+            # we already caught and handled this error in __send_lqc_command__, but we do not want to execute this function further
+            pass
+
+    # ------------------------------------------------------------------------------------------ #
+    def activate_same_channel(self, entry, silent=False):
+        if not silent:
+            self.logger.info(TerminalColors.PINK.value + entry.type.value + " already active!" + TerminalColors.ENDC.value)
+
+        # push to fs or stream
+        if entry.type == ScheduleEntryType.FILESYSTEM:
+            self.playlist_push(entry.source)
+        if entry.type == ScheduleEntryType.STREAM:
+            self.http_start_stop(True)
+            self.set_http_url(entry.source)
+        # nothing to do when we are live => just leave it as is
+
+    # ------------------------------------------------------------------------------------------ #
+    def activate_different_channel(self, entry, active_type):
+        self.logger.info(TerminalColors.PINK.value + "LiquidSoapCommunicator is activating " + entry.type.value + " & deactivating " + active_type.value + "!" + TerminalColors.ENDC.value)
+
+        self.activate_same_channel(entry, True)
+
+        # set others to zero volume
+        others = self.all_inputs_but(entry.getChannel())
+        for o in others:
+            self.channel_volume(o, 0)
+        # set active channel to wanted volume
+        self.channel_volume(entry.type.value, entry.volume)
+
+    # ------------------------------------------------------------------------------------------ #
+    def insert_track_service_entry(self, schedule_entry):
+        trackservice_entry = TrackService()
+        trackservice_entry.playlist_id = schedule_entry.playlist_id
+        trackservice_entry.entry_num = schedule_entry.entry_num
+        trackservice_entry.source = schedule_entry.source
+
+        trackservice_entry.store(add=True, commit=True)
+
+    # ------------------------------------------------------------------------------------------ #
+    def all_inputs_but(self, input_type):
+        try:
+            activemixer_copy = self.get_all_channels().copy()
+            activemixer_copy.remove(input_type)
+        except ValueError as e:
+            self.logger.error("Requested channel (" + input_type + ") not in channellist. Reason: " + str(e))
+        except AttributeError:
+            self.logger.critical("Channellist is None")
+
+        return activemixer_copy
+
+    # ------------------------------------------------------------------------------------------ #
+    def get_all_channels(self):
+        if self.channels is None or len(self.channels) == 0:
+            self.channels = self.__send_lqc_command__(self.client, "mixer", "inputs")
+
+        return self.channels
+
+    # ------------------------------------------------------------------------------------------ #
+    def reload_channels(self):
+        self.channels = None
+        return self.get_all_channels()
+
+    # ------------------------------------------------------------------------------------------ #
+    def __get_mixer_status__(self, mixernumber):
+        return self.__send_lqc_command__(self.client, "mixer", "status", mixernumber)
+
+    # ------------------------------------------------------------------------------------------ #
+    def init_player(self):
+        t = LiquidSoapInitThread()
+        t.liquidsoapcommunicator = self
+        t.active_entry = self.scheduler.get_active_entry()
+        t.start()
+        return "LiquidSoapInitThread started!"
+
+    # ------------------------------------------------------------------------------------------ #
+    def all_data(self):
+        """
+        Gibt Metadaten aller Kanäle als JSON-String an den Client zurück
+        @rtype:   string/None
+        @return:  Die Antwort des Liquidsoap-Servers
+
+        """
+        channels = self.__send_lqc_command__(self.client, 'list_channels')
+
+        if not isinstance(channels, list):
+            self.warning('01')
+            self.notifyClient()
+            return
+
+        data = {}
+        pdata = {}
+
+        try:
+            self.is_intern = True
+            playlist_data = simplejson.loads(self.playlist_data(True))
+            self.is_intern = False
+        except:
+            self.warning('01')
+            self.notifyClient()
+            return
+
+        # Status des Playlistkanals abfragen
+        status = self.__send_lqc_command__(self.client, 'status', 'mixer', '0')
+
+        states = status.split(' ')
+        state_data = {}
+
+        # Die Stati in python dicts einlesen
+        for state in states:
+            item = state.split('=')
+            try:
+                state_data[item[0]] = item[1]
+            except:
+                self.warning('01')
+                self.notifyClient()
+                return
+
+        remaining = self.__send_lqc_command__(self.client, 'playlist_remaining')
+        state_data['remaining'] = remaining
+        # Die Metadaten der Playlist
+        pdata['state'] = state_data
+        pdata['tracks'] = playlist_data
+        data['playlist'] = pdata
+
+        # Servermeldungen abschalten
+        self.is_intern = True
+        # die channel queues einlesen
+
+        for channel in channels:
+            data[channel] = self.channel_queue(channel, True)
+        # Servermeldungen einschalten
+        self.is_intern = False
+        self.success('00', data)
+        self.notifyClient()
+
+    # ------------------------------------------------------------------------------------------ #
+    def ping(self):
+        """
+        dem Client antworten
+        """
+        return self.message('OK')
+
+    # ------------------------------------------------------------------------------------------ #
+    def channel_insert(self, channel, uri, pos):
+        """
+        Track in einen Channel einfuegen
+        @type     channel: string
+        @param    channel: Kanal
+        @type     uri:     string
+        @param    uri:     Uri - z.B. file:///my/audio/mp3
+        @type     pos:     int
+        @param    pos:     Die Position an der eingefügt werden soll
+        @rtype:   string/None
+        @return:  Die Antwort des Liquidsoap-Servers
+        """
+        message = self.__send_lqc_command__(self.client, 'insert', uri, pos, channel)
+        message = message.strip()
+
+        try:
+            if int(message) > -1:
+                self.success()
+                return self.message(message)
+        except:
+            self.warning('01')
+            self.notifyClient()
+
+    # ------------------------------------------------------------------------------------------ #
+    def channel_move(self, channel, fromPos, toPos):
+        """
+        Channel-Eintrag von Position fromPos nach Position toPos verschieben
+        @type     channel: string
+        @param    channel: Kanal
+        @type     fromPos: int
+        @param    fromPos: die Position des Eintrags, der verschoben wird
+        @type     toPos:   int
+        @param    toPos:   Zielposition
+        @rtype:   string
+        @return:  Die Antwort des Liquidsoap-Servers
+        """
+        message = self.__send_lqc_command__(self.client, 'get_queue', channel, 'secondary_queue')
+
+        rids = message.strip().split(' ')
+
+        try:
+            rid = rids[int(fromPos) - 1]
+        except:
+            self.warning('01')
+            self.notifyClient()
+            return
+        try:
+            target = rids[int(toPos) - 1]
+        except:
+            self.warning('01')
+            self.notifyClient()
+            return
+
+        if rids[int(fromPos) - 1] == rids[int(toPos) - 1]:
+            self.warning('02')
+            self.notifyClient()
+            return
+
+        message = self.__send_lqc_command__(self.client, 'move', rid, str(int(toPos) - 1), channel)
+        message = message.strip()
+
+        if message.strip().find('OK') > -1:
+            self.success()
+            self.notifyClient()
+            return
+        else:
+            self.warning('03')
+            self.notifyClient()
+
+    # ------------------------------------------------------------------------------------------ #
+    def channel_off(self, channel):
+        """
+        Channel deaktivieren
+        @type     channel: string
+        @param    channel: Kanal
+        @rtype:   string
+        @return:  Die Antwort des Liquidsoap-Servers
+        """
+        # internal channel name for playlist is 'common'
+        if channel == 'playlist':
+            channel = 'common'
+
+        channels = self.__send_lqc_command__(self.client, 'list_channels', False)
+
+        index = channels.index(channel)
+        message = self.__send_lqc_command__(self.client, 'deactivate', str(index))
+        if message.find('selected=false'):
+            self.success()
+        else:
+            self.warning('01')
+
+        self.notifyClient()
+
+    # ------------------------------------------------------------------------------------------ #
+    def channel_on(self, channel):
+        """
+        Channel aktivieren
+        @type     channel: string
+        @param    channel: Kanal
+        @rtype:   string
+        @return:  Die Antwort des Liquidsoap-Servers
+        """
+
+        # Find channels
+        if channel == 'playlist':
+            channel = 'common'
+
+        channels = self.__send_lqc_command__(self.client, 'list_channels', False)
+
+        index = channels.index(channel)
+        # a activate channel
+        message = self.__send_lqc_command__(self.client, 'activate', str(index))
+
+        if message.find('selected=true'):
+            self.success()
+        else:
+            self.warning('01')
+
+        self.notifyClient()
+
+    # ------------------------------------------------------------------------------------------ #
+    def channel_queue(self, channel, raw=False):
+        """
+        Channel Queue abrufen
+        @type     channel: string
+        @param    channel: Kanal
+        @type     raw:     boolean
+        @param    raw:     Wenn true, Rückgabe als Python dict Object, andernfalls als JSON-String
+        @rtype:   string/dict
+        @return:  Der Channel Queue
+        """
+        data = {}
+
+        # queue will return request id's (rids)
+
+        message = self.__send_lqc_command__(self.client, 'get_queue', channel)
+
+        rids = message.strip().split(' ')
+        data['tracks'] = []
+        for rid in rids:
+            if rid != '':
+                # get each rids metadata
+                metadata = self.__send_lqc_command__(self.client, 'getMetadata', rid)
+                track = self._metadata_format(metadata)
+                if not 'title' in track:
+                    if 'location' in track:
+                        track['title'] = os.path.basename(track['location'])
+                    elif 'filename' in track:
+                        track['title'] = os.path.basename(track['filename'])
+                    else:
+                        track['title'] = 'unknown'
+
+                data['tracks'].extend([track])
+        channels = self.__send_lqc_command__(self.client, 'list_channels')
+
+        """
+        now get channels state 
+        self.lqc.status: ready=false volume=100% single=false selected=false remaining=0.00
+        """
+        try:
+            index = channels.index(channel)
+            status = self.__send_lqc_command__(self.client, 'status', 'mixer', str(index + 1))
+            states = status.split(' ')
+            state_data = {}
+            for state in states:
+                item = state.split('=')
+                if len(item) > 1:
+                    state_data[item[0]] = item[1]
+        except:
+            state_data = {}
+            self.error('01')
+            self.notifyClient()
+            return
+
+        data['state'] = state_data
+
+        if raw:
+            # return the list internal
+            data['state'] = state_data
+            return data
+        else:
+            self.success('00', data)
+            self.notifyClient()
+
+    # ------------------------------------------------------------------------------------------ #
+    def channel_remove(self, channel, pos):
+        """
+        Channel-Eintrag löschen
+        @type     channel: string
+        @param    channel: Kanal
+        @type     pos:     int
+        @param    pos:     Position des Eintrags
+        """
+        # Es kann nur vom Secondary Queue gelöscht werden
+        # Falls der Track im Primary Queue gelöscht werden soll, ist ein skip nötg
+
+        message = self.__send_lqc_command__(self.client, 'get_queue', channel, 'secondary_queue')
+        rids = message.strip().split(' ')
+        try:
+            rid = rids[int(pos) - 1]
+        except:
+            self.warning('02')
+            self.notifyClient()
+            return
+        message = self.__send_lqc_command__(self.client, 'remove', rid, channel)
+        if message.find('OK') > -1:
+            self.success()
+        else:
+            self.warning('01')
+
+        self.notifyClient()
+
+    # ------------------------------------------------------------------------------------------ #
+    def channel_seek(self, channel, duration):
+        """
+        Im aktuell spielenden Track auf dem Kanal <channel> <duration> Sekunden "vorspulen"
+        @type     channel:  string
+        @param    channel:  Kanal
+        @type     duration: int
+        @param    duration: Dauer in Sekunden
+        """
+        # Liquidsoap Kommando
+        data = self.__send_lqc_command__(self.client, 'seek', duration, channel)
+
+        # Resultate prüfen
+        if self._check_result(data):
+            self.success('00', self.lq_error['value'])
+        else:
+            self.warning('01')
+
+        self.notifyClient()
+
+    # ------------------------------------------------------------------------------------------ #
+    def channel_skip(self, channel):
+        """
+        Kanal skippen
+        @type     channel:  string
+        @param    channel:  Kanal
+        """
+
+        # Liquidsoap Kommando
+        channels = self.__send_lqc_command__(self.client, 'list_channels')
+
+        foundChannel = ''
+        if not isinstance(channels, list):
+            self.error('02')
+        else:
+            for index, item in enumerate(channels):
+                if item == channel:
+                    foundChannel = self.__send_lqc_command__(self.client, 'skip', 'mixer', str(index + 1))
+                    break
+
+            if foundChannel.strip().find('OK') > -1:
+                self.success()
+            elif len(channels) < 1:
+                self.warning('01')
+            else:
+                self.error('03')
+
+        self.notifyClient()
+
+    # ------------------------------------------------------------------------------------------ #
+    def channel_activate(self, channel, activate):
+        channels = self.get_all_channels()
+
+        try:
+            index = channels.index(channel)
+            if len(channel) < 1:
+                self.warning('02')
+        except:
+            import traceback
+            traceback.print_exc()
+            self.error('03')
+
+        else:
+            message = self.__send_lqc_command__(self.client, "mixer", "select", index, activate)
+            return message
+
+
+    # ------------------------------------------------------------------------------------------ #
+    def channel_volume(self, channel, volume):
+        """
+        set volume of a channel
+        @type     channel:  string
+        @param    channel:  Channel
+        @type     volume:   int
+        @param    volume:   Volume between 0 and 100
+        """
+
+        try:
+            channels = self.get_all_channels()
+            index = channels.index(channel)
+
+            if len(channel) < 1:
+                self.warning(job="channel_volume", errnum="02")
+            else:
+                message = self.__send_lqc_command__(self.client, "mixer", "volume", str(index), str(int(volume)))
+
+                if message.find('volume=' + str(volume) + '%'):
+                    self.success("channel_volume", errnum="00", value=str(volume))
+                else:
+                    self.warning("channel_volume", errnum="01")
+
+                return message
+        except (AttributeError, ValueError): #(LQConnectionError, AttributeError):
+            self.disable_transaction(force=True)
+            self.error("channel_volume", errnum="03")
+
+    # ------------------------------------------------------------------------------------------ #
+    def auraengine_state(self):
+        state = self.__send_lqc_command__(self.client, "auraengine", "state")
+        return state
+
+    # ------------------------------------------------------------------------------------------ #
+    def current_data(self):
+        """
+        Metadaten des gespielten Tracks im JSON-Format
+        Beispiel: {"title": "Deserted Cities of the Heart", "filename": "/home/michel/Nas-audio/cream/the_very_best_of/17_Deserted_Cities_of_the_Heart.mp3", "source": "ch2", "on_air": "2014/07/23 23:46:37",  "rid": "2"}
+        """
+
+        # Liquidsoap Kommando
+        message = self.__send_lqc_command__(self.client, 'currentTrack')
+
+        rid = message.strip()
+
+        metadata = self.__send_lqc_command__(self.client, 'getMetadata', rid)
+
+        data = self._metadata_format(metadata)
+
+        if data:
+            self.success('00', simplejson.dumps(data))
+        elif rid == '':
+            self.warning('01')
+        else:
+            self.warning('02', rid)
+
+        self.notifyClient()
+
+    # ------------------------------------------------------------------------------------------ #
+    def get_channel_state(self, channel):
+
+        if channel == 'playlist':
+            channel = 'common'
+
+        channels = self.__send_lqc_command__(self.client, 'list_channels', False)
+
+        index = channels.index(channel)
+        state_data = {}
+        try:
+            index = channels.index(channel)
+            status = self.__send_lqc_command__(self.client, 'status', 'mixer', str(index + 1))
+            states = status.split(' ')
+            for state in states:
+                item = state.split('=')
+                if len(item) > 1:
+                    state_data[item[0]] = item[1]
+        except:
+            state_data = {}
+            self.error('01')
+            self.notifyClient()
+            return
+        self.success('00', simplejson.dumps(state_data))
+        self.notifyClient()
+
+    # ------------------------------------------------------------------------------------------ #
+    def help(self):
+        """
+        Gibt die Hilfe aus
+        """
+        try:
+            file = open(os.path.dirname(os.path.abspath(__file__)) + '/doc/comba.hlp', 'r')
+            doc = file.read()
+            return self.message(doc)
+        except:
+            self.warning('01')
+            self.notifyClient()
+
+    # ------------------------------------------------------------------------------------------ #
+    def liquidsoap_help(self):
+        data = self.__send_lqc_command__(self.client, 'help')
+        if not data:
+            self.warning('01')
+        else:
+            self.success('00', data)
+        self.notifyClient()
+
+    # ------------------------------------------------------------------------------------------ #
+    def list_channels(self):
+        """
+        Channels auflisten (Simple JSON)
+        """
+        # Liquidsoap Kommando
+
+        channels = self.__send_lqc_command__(self.client, 'list_channels')
+
+        if not isinstance(channels, list):
+            self.error('02')
+        elif len(channels) < 1:
+            self.warning('01')
+        else:
+            self.success('00', channels)
+
+        self.notifyClient()
+
+    # ------------------------------------------------------------------------------------------ #
+    def playlist_data(self, raw=False):
+        """
+        Aktuelle Playlist Daten im JSON-Format
+        """
+
+        # Liquidsoap Kommando
+        data = self.__send_lqc_command__(self.client, 'playlistData')
+        if not raw:
+            self.success('00', simplejson.loads(data))
+            self.notifyClient()
+        else:
+            return data
+
+    # ------------------------------------------------------------------------------------------ #
+    def playlist_flush(self):
+        """
+        Aktuelle Playlist leeren
+        """
+        data = self.__send_lqc_command__(self.client, 'flush')
+        self.success('00')
+        self.notifyClient()
+
+    # ------------------------------------------------------------------------------------------ #
+    def playlist_insert(self, uri, pos):
+        """
+        Track in die Playlist einfuegen
+        """
+        data = self.__send_lqc_command__(self.client, 'insert', uri, pos)
+        if not self._check_result(data):
+            self.warning('01')
+        else:
+            self.success('00')
+        self.notifyClient()
+
+    # ------------------------------------------------------------------------------------------ #
+    def playlist_load(self, uri):
+        """
+        Playlist laden
+        @type   uri:   string
+        @param  uri:   Uri der Playlist
+        """
+        try:
+            xml = urllib.urlopen(uri).read().decode("utf8")
+
+        except:
+            try:
+                xml = open(uri).read().decode("utf8")
+            except:
+                self.error("01", self.lq_error["message"])
+                self.notifyClient()
+                return
+
+        (num, filename) = tempfile.mkstemp(suffix=".xspf")
+
+        with codecs.open(filename, "w", encoding="utf8") as text_file:
+            text_file.write(xml)
+
+        # playlist = parsexml(xml)
+        self.logger.critical("playlist commented out, due to removal of parsexml")
+        playlist = dict()
+
+        if not isinstance(playlist, dict):
+            self.error("02")
+            self.notifyClient()
+        else:
+            self.__send_lqc_command__(self.client, "flush")
+            data = self.__send_lqc_command__(self.client, "loadPlaylist", filename)
+
+            if not self._check_result(data):
+                self.error("01", self.lq_error["message"])
+
+            else:
+                os.remove(filename)
+                self._updateEventQueue(playlist)
+                event = {"job": "loadplaylist", "uri": uri}
+                self.messenger.fire_event("loadplaylist", event, "player")
+                self.success("00")
+
+            self.notifyClient()
+
+    # ------------------------------------------------------------------------------------------ #
+    def playlist_move(self, fromPos, toPos):
+        """
+        Playlist-Eintrag von Position fromPos nach Position toPos verschieben
+        @type     fromPos: int
+        @param    fromPos: die Position des Eintrags, der verschoben wird
+        @type     toPos:   int
+        @param    toPos:   Zielposition
+        """
+        data = self.__send_lqc_command__(self.client, "move", str(int(fromPos) + 1), str(int(toPos) + 1))
+
+        if not self._check_result(data):
+            self.warning("01")
+        else:
+            self.success("00")
+
+        self.notifyClient()
+
+    # ------------------------------------------------------------------------------------------ #
+    def playlist_pause(self):
+        """
+        Playlist pausieren
+        """
+        data = self.__send_lqc_command__(self.client, "pause")
+
+        if not self._check_result(data):
+            self.info("01")
+        else:
+            self.success("00")
+
+        self.notifyClient()
+
+    # ------------------------------------------------------------------------------------------ #
+    def playlist_stop(self):
+        """
+        Playlist stoppen - der Kanal wird deaktiviert
+        """
+        # Kanal 0 (Playlist) deaktivieren
+        self.__send_lqc_command__(self.client, "deactivate", "0")
+
+        data = self.__send_lqc_command__(self.client, "pause")
+
+        if not self._check_result(data):
+            self.info("01")
+        else:
+            self.success("00")
+
+        self.notifyClient()
+
+    # ------------------------------------------------------------------------------------------ #
+    def playlist_play(self, when="now"):
+        """
+        Playlist starten
+        @type   when:   string
+        @param  when:   Wenn "now" werden alle anderen Kanäle deaktiviert und geskipped
+        """
+        # Playlist Kanal aktivieren
+        self.__send_lqc_command__(self.client, "activate", "0")
+
+        if when == "now":
+            # immediately skip all playing channels
+            # and activate the playlist channel
+            channels = self.__send_lqc_command__(self.client, "list_channels")
+            if not isinstance(channels, list):
+                self.error("03")
+            elif len(channels) < 1:
+                self.warning("02")
+            else:
+                # xrange
+                for i in range(len(channels)):
+                    status = self.__send_lqc_command__(self.client, "status", "mixer", str(i + 1))
+                    if "selected=true" in status:
+                        status = self.__send_lqc_command__(self.client, "deactivate", str(i + 1))
+                        status = self.__send_lqc_command__(self.client, "skip", "mixer", str(i + 1))
+                        self.__send_lqc_command__(self.client, "activate", "0")
+
+        # send the play command
+        data = self.__send_lqc_command__(self.client, "play")
+        if not self._check_result(data):
+            self.info("01")
+        else:
+            self.success("00")
+
+        self.notifyClient()
+
+    # ------------------------------------------------------------------------------------------ #
+    def set_http_url(self, uri):
+        return self.__send_lqc_command__(self.client, "http", "url", uri)
+
+    # ------------------------------------------------------------------------------------------ #
+    def playlist_push(self, uri):
+        """
+        Eine Uri in die Playlist einfügen
+        @type   uri:   str
+        @param  uri:   Die Uri
+        """
+        return self.__send_lqc_command__(self.client, "fs", "push", uri)
+#        self.notifyClient()
+
+    # ------------------------------------------------------------------------------------------ #
+    def playlist_remove(self, pos):
+        """
+        Playlist-Eintrag löschen
+        @type     pos:     int
+        @param    pos:     Position des Eintrags
+        """
+        data = self.__send_lqc_command__(self.client, "remove", pos)
+
+        if not self._check_result(data):
+            self.info("01")
+        else:
+            self.success("00")
+
+        self.notifyClient()
+
+    # ------------------------------------------------------------------------------------------ #
+    def playlist_seek(self, duration):
+        """
+        Im aktuell spielenden Track auf dem der Playlist "vorspulen"
+        @type     duration: int
+        @param    duration: Dauer in Sekunden
+        """
+        data = self.__send_lqc_command__(self.client, "seek", duration)
+
+        # Resultate prüfen
+        if self._check_result(data):
+            self.success("00", self.lq_error["value"])
+        else:
+            self.warning("01")
+
+        self.notifyClient()
+
+    # ------------------------------------------------------------------------------------------ #
+    def playlist_skip(self):
+        """
+        Playlist skippen
+        """
+        data = self.__send_lqc_command__(self.client, "skip")
+
+        self.success("00")
+
+        self.notifyClient()
+
+    # ------------------------------------------------------------------------------------------ #
+    def version(self):
+        """
+        get version
+        """
+        data = self.__send_lqc_command__(self.client, "version")
+        self.success("00", data)
+        self.notifyClient()
+
+    # ------------------------------------------------------------------------------------------ #
+    def uptime(self):
+        """
+        get uptime
+        """
+        data = self.__send_lqc_command__(self.client, "uptime")
+        self.success("00", data)
+        self.notifyClient()
+
+    # ------------------------------------------------------------------------------------------ #
+    def on_air(self):
+        """
+        get whats playing now
+        """
+        data = self.__send_lqc_command__(self.client, "on_air")
+        self.success("00", data)
+        self.notifyClient()
+
+    # ------------------------------------------------------------------------------------------ #
+    def recorder_data(self):
+        """
+        Status-Daten des Recorders
+        Rückgabe-Beispiel: /var/audio/rec/2014-05-13/2014-05-13-22-00.wav,30 - Aufnahme von 30% der angegebenen Audiodatei
+        """
+        message = self.__send_lqc_command__(self.lqcr, "recorder_data")
+        l = message.split(",")
+        data = {}
+
+        if not isinstance(l, list):
+            data = {"file": "", "recorded": ""}
+            self.warning("01")
+        else:
+            data["file"] = l[0]
+            if len(l) > 1:
+                data["recorded"] = l[1]
+            else:
+                data["recorded"] = ""
+            self.success("00", data)
+
+        self.notifyClient()
+
+    # ------------------------------------------------------------------------------------------ #
+    def __send_lqc_command__(self, lqs_instance, namespace, command, *args):
+        """
+        Ein Kommando an Liquidsoap senden
+        @type  lqs_instance: object
+        @param lqs_instance: Instance of LiquidSoap Client
+        @type  namespace:    string
+        @param namespace:    Namespace of function
+        @type  command:      string
+        @param command:      Function name
+        @type args:          list
+        @param args:         List of parameters
+        @rtype:              string
+        @return:             Response from LiquidSoap
+        """
+        try:
+            if namespace == "recorder":
+                self.logger.info("LiquidSoapCommunicator is calling " + str(namespace) + "_" + str(command) + "." + str(args))
+            else:
+                self.logger.info("LiquidSoapCommunicator is calling " + str(namespace) + "." + str(command) + str(args))
+
+            # call wanted function ...
+            func = getattr(lqs_instance, namespace)
+            # ... and fetch the result
+            result = func(command, *args)
+
+            self.logger.debug("LiquidSoapCommunicator got response " + str(result))
+
+            self.connection_attempts = 0
+
+            return result
+
+        except LQConnectionError as e:
+            self.logger.info("Connection Error when sending " + str(namespace) + "." + str(command) + str(args))
+            if self.try_to_reconnect():
+                time.sleep(0.2)
+                self.connection_attempts += 1
+                if self.connection_attempts < 5:
+                    # reconnect
+                    self.__open_conn(self.client)
+                    self.logger.info("Trying to resend " + str(namespace) + "." + str(command) + str(args))
+                    # grab return value
+                    retval = self.__send_lqc_command__(lqs_instance, namespace, command, *args)
+                    # disconnect
+                    self.__close_conn(self.client)
+                    # return the val
+                    return retval
+                else:
+                    self.logger.info("Rethrowing Exception while trying to send " + str(namespace) + "." + str(command) + str(args))
+                    self.disable_transaction(socket=self.client, force=True)
+                    raise e
+            else:
+                # also store when was last admin mail sent with which content...
+                self.logger.critical("SEND ADMIN MAIL AT THIS POINT")
+                raise e
+
+    # ------------------------------------------------------------------------------------------ #
+    def try_to_reconnect(self):
+        self.enable_transaction()
+        return self.transaction > 0
+
+    # ------------------------------------------------------------------------------------------ #
+    def enable_transaction(self, socket=None):
+        # set socket to playout if nothing else is given
+        if socket is None:
+            socket = self.client
+
+        self.transaction = self.transaction + 1
+
+        self.logger.debug(TerminalColors.WARNING.value + "ENabling transaction! cnt: " + str(self.transaction) + TerminalColors.ENDC.value)
+
+        if self.transaction > 1:
+            return
+
+        try:
+            self.__open_conn(socket)
+        except FileNotFoundError:
+            self.disable_transaction(socket=socket, force=True)
+
+            msg = TerminalColors.RED.value + "socket file " + socket.socket_path + " not found. Is liquidsoap running?" + TerminalColors.ENDC.value
+            self.logger.critical(msg)
+            self.auramailer.send_admin_mail("[AuraEngine] CRITICAL Exception", msg)
+
+    # ------------------------------------------------------------------------------------------ #
+    def disable_transaction(self, socket=None, force=False):
+        if not force:
+            # nothing to disable
+            if self.transaction == 0:
+                return
+
+            # decrease transaction counter
+            self.transaction = self.transaction - 1
+
+            # debug msg
+            self.logger.debug(TerminalColors.WARNING.value + "DISabling transaction! cnt: " + str(self.transaction) + TerminalColors.ENDC.value)
+
+            # return if connection is still needed
+            if self.transaction > 0:
+                return
+        else:
+            self.logger.debug(TerminalColors.WARNING.value + "Forcefully DISabling transaction! " + TerminalColors.ENDC.value)
+
+        # close conn and set transactioncounter to 0
+        self.__close_conn(socket)
+        self.transaction = 0
+
+    # ------------------------------------------------------------------------------------------ #
+    def __open_conn(self, socket):
+        # already connected
+        if self.transaction > 1:
+            return
+
+        self.logger.debug(TerminalColors.GREEN.value + "LiquidSoapCommunicator opening conn" + TerminalColors.ENDC.value)
+
+        # try to connect
+        socket.connect()
+
+    # ------------------------------------------------------------------------------------------ #
+    def __close_conn(self, socket):
+        # set socket to playout
+        if socket is None:
+            socket = self.client
+
+        # do not disconnect if a transaction is going on
+        if self.transaction > 0:
+            return
+
+        # say bye
+        socket.byebye()
+
+        # debug msg
+        self.logger.debug(TerminalColors.BLUE.value + "LiquidSoapCommunicator closed conn" + TerminalColors.ENDC.value)

modules/communication/liquidsoap/initthread.py

+#
+#  engine
+#
+#  Playout Daemon for autoradio project
+#
+#
+#  Copyright (C) 2017-2018 Gottfried Gaisbauer <gottfried.gaisbauer@servus.at>
+#
+#  This file is part of engine.
+#
+#  engine 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
+#  any later version.
+#
+#  engine 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 engine. If not, see <http://www.gnu.org/licenses/>.
+#
+
+import time
+import logging
+import threading
+
+from libraries.enum.auraenumerations import ScheduleEntryType
+
+
+class LiquidSoapInitThread(threading.Thread):
+    logger = None
+    socket = None
+    active_entry = None
+    liquidsoapcommunicator = None
+
+    def __init__(self):
+        threading.Thread.__init__(self)
+        self.logger = logging.getLogger("AuraEngine")
+
+    def run(self):
+        try:
+            # sleep needed, because the socket is created to slow by liquidsoap
+            time.sleep(1)
+            self.logger.info("Waited 1s for liquidsoap. Jez soit a si gspian")
+
+            # enable lqs transaction
+            self.liquidsoapcommunicator.enable_transaction()
+
+            # reset channels and reload them
+            self.liquidsoapcommunicator.channels = None
+            channels = self.liquidsoapcommunicator.get_all_channels()
+
+            # set every volume to 0
+            for c in channels:
+                self.liquidsoapcommunicator.channel_volume(c, "0")
+
+            # select all channels
+#            for c in channels:
+#                self.liquidsoapcommunicator.channel_activate(c, True)
+
+            # setting init params
+            self.liquidsoapcommunicator.playlist_push(self.liquidsoapcommunicator.config.get("install_dir") + "/configuration/blank.flac")
+            self.liquidsoapcommunicator.set_http_url("http://stream.fro.at/fro-128.ogg")
+
+            # wait another second. lqs really starts slow..
+            time.sleep(1)
+
+            # set active
+            if self.active_entry is not None:
+                self.logger.info("LiquidSoapInitThread sets activechannel: "+str(self.active_entry))
+
+                channel = self.active_entry.type
+                if channel != "" and channel is not None:
+                    self.liquidsoapcommunicator.http_start_stop(channel == ScheduleEntryType.STREAM)
+                    self.liquidsoapcommunicator.channel_volume(channel.value, self.active_entry.volume)
+            else:
+                self.logger.warning("No active entry in the scheduler! Is a programme loaded?")
+
+            self.liquidsoapcommunicator.disable_transaction()
+        except Exception as e:
+            self.logger.critical("Liquidsoap connection ERROR! Restart LQ Server! Reason: "+str(e))
+
+

modules/communication/liquidsoap/playerclient.py

+#
+#  engine
+#
+#  Playout Daemon for autoradio project
+#
+#
+#  Copyright (C) 2017-2018 Gottfried Gaisbauer <gottfried.gaisbauer@servus.at>
+#
+#  This file is part of engine.
+#
+#  engine 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
+#  any later version.
+#
+#  engine 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 engine. If not, see <http://www.gnu.org/licenses/>.
+#
+
+from modules.communication.liquidsoap.client import LiquidSoapClient
+
+
+class LiquidSoapPlayerClient(LiquidSoapClient):
+
+    # ------------------------------------------------------------------------------------------ #
+    def mixer(self, command, *args):
+        if command == "status":
+            return self.mixerstatus(*args)
+
+        if command == "inputs":
+            return self.mixerinputs()
+
+        if command == "volume":
+            return self.mixervolume(*args)
+
+        if command == "select":
+            if len(args) == 2:
+                return self.mixerselect(args[0], args[1])
+
+        return "LiquidSoapPlayerClient does not understand mixer."+command+str(args)
+
+    # ------------------------------------------------------------------------------------------ #
+    def recorder(self, num, command, *args):
+        if command == "status":
+            return self.recorderstatus(num)
+
+        if command == "start":
+            return self.recorderstart(num)
+
+        if command == "stop":
+            return self.recorderstop(num)
+
+        return "LiquidSoapPlayerClient does not understand mixer." + command + str(args)
+
+    # ------------------------------------------------------------------------------------------ #
+    def http(self, command, *args):
+        if command == "url":
+            return self.set_http_url(*args)
+
+        return "LiquidSoapPlayerClient does not understand http." + command + str(args)
+
+    # ------------------------------------------------------------------------------------------ #
+    def fs(self, command, *args):
+        if command == "push":
+            return self.fs_push(*args)
+
+        return "LiquidSoapPlayerClient does not understand fs." + command + str(args)
+
+    # ------------------------------------------------------------------------------------------ #
+    def auraengine(self, command, *args):
+        if command == "state":
+            return self.auraengine_state()
+
+        return "LiquidSoapPlayerClient does not understand auraengine." + command + str(args)
+
+    # ------------------------------------------------------------------------------------------ #
+    def auraengine_state(self):
+        self.command('auraengine', 'state')
+        return self.message
+
+    # ------------------------------------------------------------------------------------------ #
+    def fs_push(self, uri):
+        self.command('fs', 'push', uri)
+        return self.message
+
+    # ------------------------------------------------------------------------------------------ #
+    def set_http_url(self, uri):
+        self.command('http', 'url', uri)
+        return self.message
+
+    # ------------------------------------------------------------------------------------------ #
+    def mixerinputs(self):
+        """
+        List all channels on the mixer
+        @type    namespace: string
+        @param   namespace: lqs namespace
+        @rtype:  list
+        @return: answer of our lqs server
+        """
+
+        #        self.logger.info("listchannels modules/controller/liquidsoap.py")
+
+        # send command
+        self.command("mixer", "inputs")
+
+        # convert to list and return it
+        return self.message.strip().split(' ')
+
+
+    # ------------------------------------------------------------------------------------------ #
+    def mixerstatus(self, pos=""):
+        """
+        Get state of a source in the mixer
+        @type    pos:       string
+        @param   pos:       Mixerposition
+        @rtype:  string
+        @return: Response from LiquidSoap
+        """
+        self.command("mixer", "status", str(pos))
+        return self.message
+
+    # ------------------------------------------------------------------------------------------ #
+    def mixerselect(self, pos, activate):
+        """
+        Kanal/Source aktivieren
+        @type    pos:       string
+        @param   pos:       Die Position
+        @type    namespace: string
+        @param   namespace: Namespace der Source
+        @rtype:  string
+        @return: Die Antwort des Liquidsoap-Servers
+        """
+        self.command("mixer", "select", str(pos) + " " + str(activate).lower())
+        return self.message
+
+    # ------------------------------------------------------------------------------------------ #
+    def mixervolume(self, pos, volume):
+        """
+        set channel volume
+        :param pos:
+        :param volume:
+        :return:
+        """
+        self.command("mixer", "volume", str(pos) + " " + str(volume))
+        return self.message
+
+    # ------------------------------------------------------------------------------------------ #
+    def recorderstatus(self, num):
+        """
+        get status of a recorder
+        :return:
+        """
+        self.command("recorder_" + str(num), "status")
+        return self.message
+
+    # ------------------------------------------------------------------------------------------ #
+    def recorderstart(self, num):
+        """
+        get status of a recorder
+        :return:
+        """
+        self.command("recorder_" + str(num), "start")
+        return self.message
+
+    # ------------------------------------------------------------------------------------------ #
+    def recorderstop(self, num):
+        """
+        get status of a recorder
+        :return:
+        """
+        self.command("recorder_" + str(num), "stop")
+        return self.message
+
+    # ------------------------------------------------------------------------------------------ #
+    def skip(self, namespace="playlist", pos=""):
+        """
+        Source skippen
+        @type    namespace: string
+        @param   namespace: Namespace der Source
+        @type    pos:       string
+        @param   pos:       Die Position - optional - Position des Channels vom Mixer benötigt
+        @rtype:  string
+        @return: Die Antwort des Liquidsoap-Servers
+        """
+        self.command('skip', namespace, pos)
+        return self.message
+
+    # ------------------------------------------------------------------------------------------ #
+    def remove(self, pos, namespace="playlist"):
+        """
+        Track  aus der secondary_queue oder der Playlist entfernen
+        @type    pos:       string
+        @param   pos:       Die Position
+        @type    namespace: string
+        @param   namespace: Namespace der Source
+        @rtype:  string
+        @return: Die Antwort des Liquidsoap-Servers
+        """
+        self.command('remove', namespace, str(pos))
+        return self.message
+
+    # ------------------------------------------------------------------------------------------ #
+    def insert(self, uri, pos='0', namespace="playlist"):
+        """
+        Track  einfügen
+        @type    uri:       string
+        @param   uri:       Uri einer Audiodatei
+        @type    pos:       string
+        @param   pos:       Die Position
+        @type    namespace: string
+        @param   namespace: Namespace der Source
+        @rtype:  string
+        @return: Die Antwort des Liquidsoap-Servers
+        """
+        self.command('insert', namespace, str(pos) + ' ' + uri)
+        return self.message
+
+    # ------------------------------------------------------------------------------------------ #
+    def move(self, fromPos, toPos, namespace="playlist"):
+        """
+        Track  von Position fromPos nach Position toPos verschieben
+        @type    fromPos:   string/int
+        @param   fromPos:   Position des zu verschiebenden Tracks
+        @type    toPos:     string
+        @param   toPos:     Die Position zu der verschoben werden soll
+        @type    namespace: string
+        @param   namespace: Namespace der Source
+        @rtype:  string
+        @return: Die Antwort des Liquidsoap-Servers
+        """
+        self.command('move', namespace, str(fromPos) + ' ' + str(toPos))
+        return self.message
+
+    # ------------------------------------------------------------------------------------------ #
+    def play(self, namespace="playlist"):
+        """
+        Source abspielen - funktioniert nur bei Playlist
+        @type    namespace: string
+        @param   namespace: Namespace der Source
+        @rtype:  string
+        @return: Die Antwort des Liquidsoap-Servers
+        """
+        self.command('play', namespace)
+        return self.message
+
+    # ------------------------------------------------------------------------------------------ #
+    def pause(self, namespace="playlist"):
+        """
+        Source pausieren/stoppen - funktioniert nur bei Playlist
+        @type    namespace: string
+        @param   namespace: Namespace der Source
+        @rtype:  string
+        @return: Die Antwort des Liquidsoap-Servers
+        """
+        self.command('pause', namespace)
+        return self.message
+
+    # ------------------------------------------------------------------------------------------ #
+    def flush(self, namespace="playlist"):
+        """
+        Playlist leeren
+        @type    namespace: string
+        @param   namespace: Namespace der Source
+        @rtype:  string
+        @return: Die Antwort des Liquidsoap-Servers
+        """
+        self.command('flush', namespace)
+        return self.message
+
+    # ------------------------------------------------------------------------------------------ #
+    def playlistData(self):
+        """
+        Metadaten der Playlist ausgeben
+        @rtype:  string
+        @return: Ein Json-String
+        """
+        self.command('data', 'playlist')
+        return self.message
+
+    # ------------------------------------------------------------------------------------------ #
+    def seek(self, duration, namespace="playlist"):
+        """
+        Aktuell laufenen Track des Kanals vorspulen
+        @type    duration:  string/int
+        @param   duration:  Dauer in Sekunden
+        @type    namespace: string
+        @param   namespace: Namespace der Source
+        @rtype:  string
+        @return: Die Antwort des Liquidsoap-Servers
+        """
+        self.command('seek', namespace, str(duration))
+        return self.message
+
+    # ------------------------------------------------------------------------------------------ #
+    def get_queue(self, namespace="ch1", queue='queue'):
+        """
+        Queue eines Kanals ausgeben
+        @type    namespace: string
+        @param   namespace: Namespace der Source
+        @type    queue:     string
+        @param   queue:    Name des queues (queue, primary_queue, secondary_queue)
+        @rtype:  string
+        @return: Die Antwort des Liquidsoap-Servers
+        """
+        self.command(queue, namespace)
+        return self.message
+
+    # ------------------------------------------------------------------------------------------ #
+    def loadPlaylist(self, uri, params="", namespace="playlist"):
+        """
+        Playlist laden
+        @type    uri:       string
+        @param   uri:       Uri einer Playlist im XSPF-Format
+        @type    params:    string
+        @param   params:    obsolete
+        @type    namespace: string
+        @param   namespace: Namespace der Source - hier nur playlist
+        @rtype:  string
+        @return: Die Antwort des Liquidsoap-Servers
+        """
+        self.command('load', namespace, uri + params)
+        return self.message
+
+    # ------------------------------------------------------------------------------------------ #
+    def currentTrack(self, namespace="request"):
+        """
+        Das oder die ID(s) der gerade abgespielten requests erhalten
+        @type    namespace: string
+        @param   namespace: Namespace der Source
+        @rtype:  string
+        @return: Die Antwort des Liquidsoap-Servers (als String)
+        """
+        self.command('on_air', namespace)
+        return self.message
+
+    # ------------------------------------------------------------------------------------------ #
+    def volume(self, pos, volume, namespace="mixer"):
+        """
+        Lautstärke eines Kanals setzen
+        @type    pos:       int/string
+        @param   pos:       Die Position/ Nummer des Kanals (playlist=0)
+        @type    volume:    int/string
+        @param   volume:    Zahl von 1 -100
+        @type    namespace: string
+        @param   namespace: Namespace der Source (immer mixer)
+        @rtype:  string
+        @return: Die Antwort des Liquidsoap-Servers
+        """
+        self.command('volume', namespace, str(pos) + ' ' + str(volume))
+        return self.message
+
+    # ------------------------------------------------------------------------------------------ #
+    def playlist_remaining(self):
+        """
+        Wie lange läuft der aktuelle Track der Playlist noch
+        @rtype:  string
+        @return: Die Antwort des Liquidsoap-Servers
+        """
+        self.command('remaining', 'playlist')
+        return self.message
+
+    # ------------------------------------------------------------------------------------------ #
+    def list_channels(self):
+        """
+        Channels auflisten (Simple JSON)
+        """
+        # Liquidsoap Kommando
+
+        channels = self.sendLqcCommand(self.lqc, 'mixer', 'inputs')
+
+        if not isinstance(channels, list):
+            self.error('02')
+        elif len(channels) < 1:
+            self.warning('01')
+        else:
+            self.success('00', channels)
+
+        self.notifyClient()
\ No newline at end of file

modules/communication/liquidsoap/recorderclient.py

+#
+#  engine
+#
+#  Playout Daemon for autoradio project
+#
+#
+#  Copyright (C) 2017-2018 Gottfried Gaisbauer <gottfried.gaisbauer@servus.at>
+#
+#  This file is part of engine.
+#
+#  engine 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
+#  any later version.
+#
+#  engine 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 engine. If not, see <http://www.gnu.org/licenses/>.
+#
+
+from modules.communication.liquidsoap.client import LiquidSoapClient
+
+class LiquidSoapRecorderClient(LiquidSoapClient):
+    # ------------------------------------------------------------------------------------------ #
+    def record(self, command, *args):
+        if command == "status":
+            self.command('record', 'status')
+
+        return self.message
+
+    # ------------------------------------------------------------------------------------------ #
+    def recorder_setfilename(self, filename):
+        """
+        Dateinamen für Aufnahme (Vorproduktion) definieren
+        @type    filename: string
+        @param   filename: Dateiname - Angabe ohne Verzeichnis und mit Extension
+        @rtype:  string
+        @return: Die Antwort des Liquidsoap-Servers
+        """
+        self.command('setfilename', 'record', str(filename))
+        return self.message
+
+    # ------------------------------------------------------------------------------------------ #
+    def stop_record(self):
+        """
+        Recorder stoppen
+        @rtype:  string
+        @return: Die Antwort des Liquidsoap-Servers
+        """
+        message = self.command('stop', 'record')
+        return self.message
+
+    # ------------------------------------------------------------------------------------------ #
+    def start_record(self):
+        """
+        Recorder starten
+        @rtype:  string
+        @return: Die Antwort des Liquidsoap-Servers
+        """
+        self.command('start', 'record')
+        return self.message
+
+    # ------------------------------------------------------------------------------------------ #
+    def recorder_data(self):
+        """
+        Daten des recorders erhalten
+        @rtype:  string
+        @return: Die Antwort des Liquidsoap-Servers
+        """
+        self.command('curfile', 'record')
+        return self.message
\ No newline at end of file

modules/communication/mail/mail.py

+#
+#  engine
+#
+#  Playout Daemon for autoradio project
+#
+#
+#  Copyright (C) 2017-2018 Gottfried Gaisbauer <gottfried.gaisbauer@servus.at>
+#
+#  This file is part of engine.
+#
+#  engine 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
+#  any later version.
+#
+#  engine 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 engine. If not, see <http://www.gnu.org/licenses/>.
+#
+
+import os
+import smtplib
+from email.message import EmailMessage
+from libraries.exceptions.auraexceptions import MailingException
+
+
+class AuraMailer():
+    config = None
+
+    def __init__(self, config):
+        self.config = config
+        self.admin_mails = config.get("admin_mail")
+
+
+    def send_admin_mail(self, subject, body):
+        admin_mails = self.admin_mails.split()
+
+        for mail_to in admin_mails:
+            self.__send(mail_to, subject, body)
+
+    def __send(self, mail_to, subject, body):
+        mail_server = self.config.get("mail_server")
+        mail_port = self.config.get("mail_server_port")
+        mail_user = self.config.get("mail_user")
+        mail_pass = self.config.get("mail_pass")
+        from_mail = self.config.get("from_mail")
+
+        if mail_server == "":
+            raise MailingException("Mail Server not set")
+        if mail_port == "":
+            raise MailingException("Mailserver Port not set")
+        if mail_user == "":
+            raise MailingException("Mail user not set")
+        if mail_pass == "":
+            raise MailingException("No Password for mailing set")
+        if from_mail == "":
+            raise MailingException("From Mail not set")
+
+        msg = EmailMessage()
+        msg.set_content(body)
+        mailsubject_prefix = self.config.get("mailsubject_prefix")
+        if mailsubject_prefix == "":
+            msg["Subject"] = subject
+        else:
+            msg["Subject"] = mailsubject_prefix + " " + subject
+        msg["From"] = from_mail
+        msg["To"] = mail_to
+
+        server = smtplib.SMTP(mail_server, int(mail_port))
+        server.starttls()
+        server.login(mail_user, mail_pass)
+        server.send_message(msg)
+        server.quit()
+
+#        sendmail_location = "/usr/sbin/sendmail"
+#        p = os.popen("%s -t" % sendmail_location, "w")
+#        p.write("From: %s\n" % self.from_mail)
+#        p.write("To: %s\n" % mail_to)
+#        p.write("Subject: " + subject + "\n")
+#        p.write("\n") # blank line separating headers from body
+#        p.write(body)
+#        status = p.close()
+#        return status

modules/communication/redis/adapter.py

+#
+#  engine
+#
+#  Playout Daemon for autoradio project
+#
+#
+#  Copyright (C) 2017-2018 Gottfried Gaisbauer <gottfried.gaisbauer@servus.at>
+#
+#  This file is part of engine.
+#
+#  engine 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
+#  any later version.
+#
+#  engine 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 engine. If not, see <http://www.gnu.org/licenses/>.
+#
+
+import sys
+import time
+import redis
+import logging
+import threading
+
+from datetime import datetime
+from threading import Event
+
+from modules.communication.redis.messenger import RedisMessenger
+from modules.communication.connection_tester import ConnectionTester
+from libraries.database.statestore import RedisStateStore
+from libraries.exceptions.auraexceptions import RedisConnectionException
+from libraries.enum.auraenumerations import RedisChannel, TerminalColors
+
+
+class ServerRedisAdapter(threading.Thread, RedisMessenger):
+    debug = False
+    # logger = None
+    pubsub = None
+    config = None
+    redisdb = None
+    channel = ""
+    scheduler = None
+    redisclient = None
+    connection_tester = None
+    liquidsoapcommunicator = None
+
+    def __init__(self):
+        #super(ServerRedisAdapter, self).__init__()
+        threading.Thread.__init__(self)
+        RedisMessenger.__init__(self)
+
+        # self.logger = logging.getLogger("AuraEngine")
+
+        # init
+        threading.Thread.__init__ (self)
+        self.shutdown_event = Event()
+
+        self.channel = RedisChannel.STANDARD.value
+        self.section = ''
+        self.rstore = RedisStateStore()
+        self.errnr = '00'
+        self.components = {'controller':'01', 'scheduling':'02', 'playd':'03', 'recorder':'04', 'helpers':'09'}
+        self.fromMail = ''
+        self.adminMails = ''
+
+        self.redisclient = ClientRedisAdapter()
+        self.connection_tester = ConnectionTester()
+
+    # ------------------------------------------------------------------------------------------ #
+    def run(self):
+        self.redisdb = redis.Redis()
+        self.pubsub = self.redisdb.pubsub()
+        self.pubsub.subscribe(self.channel)
+
+        self.logger.info(TerminalColors.ORANGE.value + "waiting for REDIS message on channel " + self.channel + TerminalColors.ENDC.value)
+
+        # listener loop
+        for item in self.pubsub.listen():
+            if item["type"] == "subscribe":
+                continue
+
+            self.logger.info(TerminalColors.ORANGE.value + "received REDIS message: " + TerminalColors.ENDC.value + str(item))
+
+            item["channel"] = self.decode_if_needed(item["channel"])
+            item["data"] = self.decode_if_needed(item["data"])
+
+            try:
+                self.work(item)
+            except RedisConnectionException as rce:
+                self.logger.error(rce)
+
+            if not self.shutdown_event.is_set():
+                self.logger.info(TerminalColors.ORANGE.value + "waiting for REDIS message on channel " + self.channel + TerminalColors.ENDC.value)
+
+        self.pubsub.unsubscribe()
+
+        if not self.shutdown_event.is_set():
+            self.logger.warning("unsubscribed from " + self.channel + " and finished")
+
+    # ------------------------------------------------------------------------------------------ #
+    def decode_if_needed(self, val):
+        if isinstance(val, bytes):
+            return val.decode("utf-8")
+        return val
+
+    # ------------------------------------------------------------------------------------------ #
+    def listen_for_one_message(self, channel, socket_timeout=2):
+        self.redisdb = redis.Redis(socket_timeout=socket_timeout)
+        self.pubsub = self.redisdb.pubsub()
+        self.pubsub.subscribe(channel)
+
+        try:
+            self.logger.info("I am listening on channel '"+channel+"' for "+str(socket_timeout)+" seconds")
+
+            for item in self.pubsub.listen():
+                it = self.receive_message(item)
+                if it is not None:
+                    break
+        except redis.exceptions.TimeoutError as te:
+            raise te
+
+        return item["data"]
+
+    # ------------------------------------------------------------------------------------------ #
+    def receive_message(self, item):
+        if item["type"] == "subscribe":
+            self.logger.info("i am subscribed to channel " + item["channel"].decode("utf-8"))
+            return None
+
+        item["channel"] = item["channel"].decode("utf-8")
+        if isinstance(item["data"], bytes):
+            item["data"] = item["data"].decode("utf-8")
+
+        self.pubsub.unsubscribe()
+        return item
+
+    # ------------------------------------------------------------------------------------------ #
+    def work(self, item):
+        if item["data"] == "fetch_new_programme":
+            #self.execute(RedisChannel.FNP_REPLY.value, self.scheduler.fetch_new_programme)
+            self.execute(RedisChannel.FNP_REPLY.value, self.scheduler.get_act_programme_as_string)
+
+        elif item["data"] == "shutdown":
+            self.shutdown_event.set()
+            self.scheduler.stop()
+            self.pubsub.close()
+            self.logger.info("shutdown event received. Bye bye...")
+
+        elif item["data"] == "init_player":
+            self.execute(RedisChannel.IP_REPLY.value, self.liquidsoapcommunicator.init_player)
+
+        elif item["data"] == "get_act_programme":
+            self.execute(RedisChannel.GAP_REPLY.value, self.scheduler.get_act_programme_as_string)
+
+        elif item["data"] == "get_connection_status":
+            self.execute(RedisChannel.GCS_REPLY.value, self.connection_tester.get_connection_status)
+
+        elif item["data"] == "print_message_queue":
+            self.execute(RedisChannel.PMQ_REPLY.value, self.scheduler.print_message_queue)
+
+        elif item["data"].find("swap_playlist_entries") >= 0:
+            extracted = item["data"].split()[1:3]
+            param = {"from_index": extracted[0], "to_index": extracted[1]}
+            self.execute(RedisChannel.MPE_REPLY.value, self.scheduler.swap_playlist_entries, param)
+
+        elif item["data"].find("delete_playlist_entry") >= 0:
+            entrynum = item["data"].split()[1]
+            self.logger.info("entry to del: " + str(entrynum))
+            self.execute(RedisChannel.DPE_REPLY.value, self.scheduler.delete_playlist_entry, entrynum)
+
+        elif item["data"].find("insert_playlist_entry") >= 0:
+            extracted = item["data"].split()[1:3]
+            param = {"fromtime": extracted[0], "source": extracted[1]}
+            self.execute(RedisChannel.IPE_REPLY.value, self.scheduler.insert_playlist_entry, param)
+
+        elif item["data"].find("set_next_file") >= 0:
+            playlist = item["data"].split()[1]
+            playlist = playlist[0:len(playlist)-9]
+            self.execute(RedisChannel.SNF_REPLY.value, self.scheduler.set_next_file_for, playlist)
+
+        elif item["data"] == "recreate_db":
+            self.execute(RedisChannel.RDB_REPLY.value, self.scheduler.recreate_database)
+
+        elif item["data"] == "status":
+            return True
+
+        else:
+            raise RedisConnectionException("ServerRedisAdapter Cannot understand command: " + item["data"])
+
+    # ------------------------------------------------------------------------------------------ #
+    def execute(self, channel, f, param=None):
+        if param:
+            reply = f(param)
+        else:
+            reply = f()
+
+        if reply is None:
+            reply = ""
+
+        # sometimes the sender is faster than the receiver. redis messages would be lost
+        time.sleep(0.1)
+
+        self.logger.info(TerminalColors.ORANGE.value + "replying REDIS message " + reply + " on channel " + channel + TerminalColors.ENDC.value)
+
+        # publish
+        self.redisclient.publish(channel, reply)
+
+    # ------------------------------------------------------------------------------------------ #
+    def join_comm(self):
+        try:
+            while self.is_alive():
+                self.logger.info(str(datetime.now())+" joining")
+                self.join()
+                self.logger.warning("join out")
+
+        except (KeyboardInterrupt, SystemExit):
+            # Dem Server den Shutdown event setzen
+            # server.shutdown_event.set()
+            # Der Server wartet auf Eingabe
+            # Daher einen Client initiieren, der eine Nachricht schickt
+            self.halt()
+            sys.exit('Terminated')
+
+    # ------------------------------------------------------------------------------------------ #
+    def halt(self):
+        """
+        Stop the server
+        """
+        if self.shutdown_event.is_set():
+            return
+        try:
+            del self.auracontroller
+        except:
+            pass
+        self.shutdown_event.set()
+        result = 'failed'
+        try:
+            result = self.socket.unbind("tcp://"+self.ip+":"+self.port)
+        except:
+            pass
+
+        # self.socket.close()
+
+    # ------------------------------------------------------------------------------------------ #
+    def send(self, message):
+        """
+        Send a message to the client
+        :param message: string
+        """
+        if not self.can_send:
+            self.logger.info("sending a "+str(len(message))+" long message via REDIS.")
+            self.socket.send(message.encode("utf-8"))
+            self.can_send = False
+        else:
+            self.logger.warning("cannot send message via REDIS: "+str(message))
+
+
+class ClientRedisAdapter(RedisMessenger):
+
+    def __init__(self):
+        RedisMessenger.__init__(self)
+
+    # ------------------------------------------------------------------------------------------ #
+    def publish(self, channel, message):
+        if type(channel) == RedisChannel:
+            channel = channel.value
+
+        self.rstore.publish(channel, message)

modules/communication/redis/messenger.py

+#
+#  engine
+#
+#  Playout Daemon for autoradio project
+#
+#
+#  Copyright (C) 2017-2018 Gottfried Gaisbauer <gottfried.gaisbauer@servus.at>
+#
+#  This file is part of engine.
+#
+#  engine 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
+#  any later version.
+#
+#  engine 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 engine. If not, see <http://www.gnu.org/licenses/>.
+#
+
+import time
+import logging
+import datetime
+
+from libraries.database.statestore import RedisStateStore
+from modules.communication.mail.mail import AuraMailer
+from libraries.exceptions.auraexceptions import PlaylistException
+from libraries.enum.auraenumerations import RedisChannel
+from libraries.base.logger import AuraLogger
+
+"""
+Send and receive redis messages
+"""
+
+
+class RedisMessenger():
+    logger = None
+    rstore = None
+
+    def __init__(self):
+        super(RedisMessenger, self).__init__()
+        """
+            Constructor
+        """
+        self.logger = logging.getLogger("AuraEngine")
+        self.channel = RedisChannel.STANDARD
+        self.section = ''
+        self.rstore = RedisStateStore()
+        self.errnr = '00'
+        self.components = {'controller':'01', 'scheduling':'02', 'playd':'03', 'recorder':'04', 'helpers':'09'}
+        self.fromMail = ''
+        self.adminMails = ''
+
+    # ------------------------------------------------------------------------------------------ #
+    def set_channel(self, channel):
+        """
+        Einen "Kanal" setzen - zb scheduling
+        @type channel: string
+        @param channel: Kanal/Name der Komponente
+        """
+        self.channel = channel
+        if channel in self.components:
+            self.errnr = self.components[channel]
+        self.rstore.set_channel(channel)
+
+    # ------------------------------------------------------------------------------------------ #
+    def set_section(self, section):
+        """
+        Einen Sektion / Gültigkeitsbereich der Meldung setzen - zb internal
+        @type section: string
+        @param section: Gültigkeitsbereich
+        """
+        self.section = section
+
+
+# ------------------------------------------------------------------------------------------ #
+    def set_mail_addresses(self, fromMail, adminMails):
+        """
+        Einen Sektion / Gültigkeitsbereich der Meldung setzen - zb internal
+        @type section: string
+        @param section: Gültigkeitsbereich
+        """
+        self.fromMail = fromMail
+        self.adminMails = adminMails
+
+    # ------------------------------------------------------------------------------------------ #
+    def send(self, message, code, level, job, value='', section=''):
+        """
+        Eine Message senden
+        @type message:  string
+        @param message: menschenverständliche Nachricht
+        @type code:     string
+        @param code:    Fehlercode - endet mit 00 bei Erfolg
+        @type level:    string
+        @param level:   Error-Level - info, warning, error, fatal
+        @type job:      string
+        @param job:     Name der ausgeführten Funktion
+        @type value:    string
+        @param value:   Ein Wert
+        @type section:  string
+        @param section: Globale Sektion überschreiben
+        """
+        section = self.section if section == '' else section
+        self.time = str(datetime.datetime.now().strftime('%Y-%m-%dT%H:%M:%S:%f'))
+        self.utime = time.time()
+        state = {'message':message.strip().replace("'","\\'"), 'code':self.errnr + str(code),'job':job,'value':value}
+        self.rstore.set_section(section)
+        self.rstore.store(level, state)
+
+        # TODO: hier kann auch was zu redis gepostet werden
+        if level == 'info' or level == 'success':
+            self.logger.info(message)
+        elif level == 'warning':
+            self.logger.warning(message)
+        elif level == 'error':
+            self.logger.error(message)
+            self.send_admin_mail(level, message, state)
+
+        elif level == 'fatal':
+            self.logger.critical(message)
+            self.send_admin_mail(level, message, state)
+
+    # ------------------------------------------------------------------------------------------ #
+    def say_alive(self):
+        """
+        Soll alle 20 Sekunden von den Komponenten ausgeführt werden,
+        um zu melden, dass sie am Leben sind
+        """
+        self.rstore.set_alive_state()
+
+    # ------------------------------------------------------------------------------------------ #
+    def get_alive_state(self, channel):
+        """
+        Live State abfragen
+        @type channel: string
+        @param channel: Channel/Komponente
+        """
+        return self.rstore.get_alive_state(channel)
+
+    # ------------------------------------------------------------------------------------------ #
+    def set_state(self, name, value, expires=None, channel=None):
+        """
+        Kündigt einen Event an
+        @type name: string
+        @param name: Name des state
+        @type value: string
+        @param value: Wert
+        @type channel: string
+        @param channel: Kanal (optional)
+        """
+        if not channel:
+            channel = self.channel
+
+        self.rstore.set_state(name, value, expires, channel)
+
+    # ------------------------------------------------------------------------------------------ #
+    def queue_add_event(self, name, eventtime, value, channel=None):
+        """
+        Kündigt einen Event an
+        @type name: string
+        @param name: der Name des Events
+        @type eventtime: string|datetime.datetime
+        @param eventtime: Datum und Zeit des events
+        @type value: dict
+        @param value: Werte
+        @type channel: string
+        @param channel: Kanal (optional)
+        """
+        if not channel:
+            channel = self.channel
+
+        if type(eventtime) == type(str()):
+            eventtime_str = datetime.datetime.strptime(eventtime[0:16].replace(' ','T'), "%Y-%m-%dT%H:%M").strftime("%Y-%m-%dT%H:%M")
+
+        elif type(eventtime) is datetime.datetime:
+            eventtime_str = eventtime.strftime("%Y-%m-%dT%H:%M")
+
+        else:
+            raise TypeError('eventtime must be a datetime.date or a string, not a %s' % type(eventtime))
+
+        self.rstore.queue_add_event(eventtime_str, name, value, channel)
+
+    # ------------------------------------------------------------------------------------------ #
+    def queue_remove_events(self, name, channel=None):
+        """
+        Löscht Events
+        @type name: string
+        @param name: der Name des Events
+        @type channel: string
+        @param channel: Kanal (optional)
+        """
+        if not channel:
+            channel = self.channel
+
+        self.rstore.queue_remove_events(name, channel)
+
+    # ------------------------------------------------------------------------------------------ #
+    def fire_event(self, name, value, channel=None):
+        """
+        Feuert einen Event
+        @type name: string
+        @param name: der Name des Events
+        @type value: dict
+        @param value: Werte
+        @type channel: string
+        @param channel: Kanal (optional)
+        """
+        if not channel:
+            channel = self.channel
+
+        self.rstore.fire_event(name, value, channel)
+
+    # ------------------------------------------------------------------------------------------ #
+    def get_event_queue(self, name=None, channel=None):
+        """
+        Holt events eines Kanals
+        @type channel: string
+        @param channel: Kanal (optional)
+        @rtype: list
+        @return: Liste der Events
+        """
+        queue = self.rstore.get_event_queue(name, channel)
+        return queue
+
+    # ------------------------------------------------------------------------------------------ #
+    def get_events(self, name=None, channel=None):
+        """
+        Holt events eines Kanals
+        @type channel: string
+        @param channel: Kanal (optional)
+        @rtype: list
+        @return: Liste der Events
+        """
+        events = self.rstore.get_events(name, channel)
+        return events
+
+    # ------------------------------------------------------------------------------------------ #
+    def get_event(self, name=None, channel=None):
+        """
+        Holt event eines Kanals
+        @type channel: string
+        @param channel: Kanal (optional)
+        @rtype: dict
+        @return: Event
+        """
+        events = self.rstore.get_events(name, channel)
+        result = False
+        if events:
+            result = events.pop(0)
+        return result
+
+    # ------------------------------------------------------------------------------------------ #
+    def send_admin_mail(self, level, message, state):
+        """
+        Sendent mail an Admin(s),
+        @type message: string
+        @param message: Die Message
+        @type state: dict
+        @param state: Der State
+        @return result
+        """
+
+        if self.fromMail and self.adminMails:
+            subject = "Possible comba problem on job " + state['job'] + " - " + level
+            mailmessage = "Hi Admin,\n comba reports a possible problem\n\n"
+            mailmessage = mailmessage + level + "!\n"
+            mailmessage = mailmessage + message + "\n\n"
+            mailmessage = mailmessage + "Additional information:\n"
+            mailmessage = mailmessage + "##################################################\n"
+            mailmessage = mailmessage + "Job:\t" + state['job'] + "\n"
+            mailmessage = mailmessage + "Code:\t" + state['code'] + "\n"
+            mailmessage = mailmessage + "Value:\t" + str(state['value']) + "\n"
+            mailer = AuraMailer(self.adminMails, self.fromMail)
+            mailer.send_admin_mail(subject, mailmessage)
+        else:
+            return False
+
+    # ------------------------------------------------------------------------------------------ #
+    def receive(self):
+        """
+        Bisher wird nichts empfangen
+        """
+        return ""
+
+    # ------------------------------------------------------------------------------------------ #
+    def get_next_file_for(self, playlisttype):
+        next = self.rstore.db.get('next_'+playlisttype+'_file')
+
+        if next is None:
+            return ""
+
+        return next.decode('utf-8')
+
+    # ------------------------------------------------------------------------------------------ #
+    def set_next_file_for(self, playlisttype, file):
+        self.rstore.db.set("next_" + playlisttype + "file", file)
+
+

modules/liquidsoap/__init__.py

+__author__ = 'gg'

modules/liquidsoap/alsa_settings_tester.liq

+#
+#  engine
+#
+#  Playout Daemon for autoradio project
+#
+#
+#  Copyright (C) 2017-2018 Gottfried Gaisbauer <gottfried.gaisbauer@servus.at>
+#
+#  This file is part of engine.
+#
+#  engine 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
+#  any later version.
+#
+#  engine 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 engine. If not, see <http://www.gnu.org/licenses/>.
+#
+
+set("log.file.path", "./<script>.log")
+
+set("server.telnet", true)
+set("server.telnet.bind_addr", "0.0.0.0")
+set("server.telnet.port", 1234)
+
+# ALSA / pulse settings
+# durch ausprobieren herausgefunden für asus xonar dgx 5.1
+# chip: CMI8788
+# driver: snd_oxygen
+
+set("frame.duration", 0.30)
+set("alsa.alsa_buffer", 8192) # 7168) # 6144) # 8192) # 10240) #15876
+set("alsa.buffer_length", 25)
+set("alsa.periods", 0) # assertion error when setting periods other than 0 => alsa default
+
+input_linein = input.alsa(id="linein", bufferize = false)
+input_fs = single(id="fs", "/var/audio/fallback/output.flac")
+input_http = input.http(id="http", "http://stream.fro.at/fro-128.ogg")
+
+mixer = mix(id="mixer", [input_fs, input_http, input_linein])
+
+output.alsa(id="lineout", bufferize = false, mixer)
+

modules/liquidsoap/engine.liq

+#!/usr/bin/liquidsoap
+
+#
+#  engine
+#
+#  Playout Daemon for autoradio project
+#
+#
+#  Copyright (C) 2017-2018 Gottfried Gaisbauer <gottfried.gaisbauer@servus.at>
+#
+#  This file is part of engine.
+#
+#  engine 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
+#  any later version.
+#
+#  engine 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 engine. If not, see <http://www.gnu.org/licenses/>.
+#
+
+icecast_vorbis_metadata = false
+inputs = ref []
+
+# load settings from ini file
+%include "settings.liq"
+
+# include some functions
+%include "library.liq"
+
+# include fallback functions
+%include "fallback.liq"
+
+#################
+# create inputs #
+#################
+
+# enable play from filesystem
+%include "in_filesystem.liq"
+
+# enable stream overtakes
+%include "in_stream.liq"
+
+# enabled line in from soundcard
+%include "in_soundcard.liq"
+
+# fill the mixer
+mixer = mix(id="mixer", list.append([input_fs, input_http], !inputs))
+
+# output source with fallbacks
+# stripped_stream = strip_blank(max_blank=fallback_max_blank, min_noise=fallback_min_noise, threshold=fallback_threshold, mixer)
+ignore(fallback_max_blank)
+ignore(fallback_min_noise)
+ignore(fallback_threshold)
+ignore(timeslot_fallback)
+ignore(station_fallback)
+ignore(show_fallback)
+
+# enable fallback
+output_source = mixer # fallback(id="fallback", track_sensitive=false, [mksafe(stripped_stream), timeslot_fallback, show_fallback, station_fallback])
+
+##################
+# create outputs #
+##################
+
+# create soundcard output
+%include "out_soundcard.liq"
+
+# recording output
+%include "out_filesystem.liq"
+
+# stream output
+%include "out_stream.liq"
+
+# enable socket functions
+%include "serverfunctions.liq"
+
+########################
+# start initialization #
+########################
+
+# system('#{list.assoc("install_dir", ini)}/guru.py --init-player --quiet')
+
+

modules/liquidsoap/fallback.liq

+#
+#  engine
+#
+#  Playout Daemon for autoradio project
+#
+#
+#  Copyright (C) 2017-2018 Gottfried Gaisbauer <gottfried.gaisbauer@servus.at>
+#
+#  This file is part of engine.
+#
+#  engine 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
+#  any later version.
+#
+#  engine 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 engine. If not, see <http://www.gnu.org/licenses/>.
+#
+
+# Custom crossfade to deal with jingles.
+def smart_crossfade (~start_next=5.,~fade_in=3.,~fade_out=3.,
+                     ~default=(fun (a,b) -> sequence([a, b])),
+                     ~high=-15., ~medium=-32., ~margin=4.,
+                     ~width=2.,~conservative=false,s)
+  fade.out = fade.out(type="sin",duration=fade_out)
+  fade.in  = fade.in(type="sin",duration=fade_in)
+  add = fun (a,b) -> add(normalize=false,[b, a])
+  log = log(label="smart_crossfade")
+
+  def transition(a,b,ma,mb,sa,sb)
+
+    list.iter(fun(x)-> log(level=4,"Before: #{x}"),ma)
+    list.iter(fun(x)-> log(level=4,"After : #{x}"),mb)
+
+    if ma["type"] == "jingles" or mb["type"] == "jingles" then
+      log("Old or new file is a jingle: sequenced transition.")
+      sequence([sa, sb])
+    elsif
+      # If A and B are not too loud and close, fully cross-fade them.
+      a <= medium and b <= medium and abs(a - b) <= margin
+    then
+      log("Old <= medium, new <= medium and |old-new| <= margin.")
+      log("Old and new source are not too loud and close.")
+      log("Transition: crossed, fade-in, fade-out.")
+      add(fade.out(sa),fade.in(sb))
+
+    elsif
+      # If B is significantly louder than A, only fade-out A.
+      # We don't want to fade almost silent things, ask for >medium.
+      b >= a + margin and a >= medium and b <= high
+    then
+      log("new >= old + margin, old >= medium and new <= high.")
+      log("New source is significantly louder than old one.")
+      log("Transition: crossed, fade-out.")
+      add(fade.out(sa),sb)
+
+    elsif
+      # Opposite as the previous one.
+      a >= b + margin and b >= medium and a <= high
+    then
+      log("old >= new + margin, new >= medium and old <= high")
+      log("Old source is significantly louder than new one.")
+      log("Transition: crossed, fade-in.")
+      add(sa,fade.in(sb))
+
+    elsif
+      # Do not fade if it's already very low.
+      b >= a + margin and a <= medium and b <= high
+    then
+      log("new >= old + margin, old <= medium and new <= high.")
+      log("Do not fade if it's already very low.")
+      log("Transition: crossed, no fade.")
+      add(sa,sb)
+
+    # What to do with a loud end and a quiet beginning ?
+    # A good idea is to use a jingle to separate the two tracks,
+    # but that's another story.
+
+    else
+      # Otherwise, A and B are just too loud to overlap nicely,
+      # or the difference between them is too large and overlapping would
+      # completely mask one of them.
+      log("No transition: using default.")
+      default(sa, sb)
+    end
+  end
+
+  smart_cross(width=width, duration=start_next, conservative=conservative, transition, s)
+end
+
+# create a pool
+def fallback_create(~skip=true, name, requestor)
+  log("Creating channel #{name}")
+
+  # Create the request.dynamic source
+  # Set conservative to true to queue
+  # several songs in advance
+  #source = request.dynamic(conservative=true, length=50., id="pool_"^name, requestor, timeout=60.)
+  source = request.dynamic(length=50., id="pool_"^name, requestor, timeout=60.)
+
+  # Apply normalization using replaygain information
+  source = amplify(1., override="replay_gain", source)
+
+  # Skip blank when asked to
+  source =
+    if skip then
+      skip_blank(source, max_blank=10., threshold=-40.)
+    else
+      source
+    end
+
+  # Tell the system when a new track
+  # is played
+  source = on_metadata(fun (meta) ->
+    system('#{list.assoc("install_dir", ini)}/guru.py -c aura -t liquid_startup'), source)
+
+  log("channel created")
+
+  # Finally apply a smart crossfading
+  smart_crossfade(source)
+end
+
+def create_dynamic_playlist(next)
+  log("next song is: #{next}")
+  request.create(list.hd(next))
+end
+
+def create_playlist() =
+  log("requesting next song for PLAYLIST")
+  result = get_process_lines('#{list.assoc("install_dir", ini)}/guru.py --get-next-file-for "playlist" --quiet')
+  create_dynamic_playlist(result)
+end
+
+def create_station_fallback() =
+  log("requesting next song for STATION fallback")
+  result = get_process_lines('#{list.assoc("install_dir", ini)}/guru.py --get-next-file-for "station-fallback" --quiet')
+  create_dynamic_playlist(result)
+end
+
+def create_show_fallback() =
+  log("requesting next song for SHOW fallback")
+  result = get_process_lines('#{list.assoc("install_dir", ini)}/guru.py --get-next-file-for "show-fallback" --quiet')
+  create_dynamic_playlist(result)
+end
+
+def create_timeslot_fallback() =
+  log("requesting next song for TIMESLOT fallback")
+  result = get_process_lines('#{list.assoc("install_dir", ini)}/guru.py --get-next-file-for "timeslot-fallback" --quiet')
+  create_dynamic_playlist(result)
+end
+
+# create fallbacks
+timeslot_fallback = fallback_create(skip=true, "timeslot_fallback", create_timeslot_fallback)
+station_fallback  = fallback_create(skip=true, "station_fallback", create_station_fallback)
+show_fallback     = fallback_create(skip=true, "show_fallback", create_show_fallback)
\ No newline at end of file

modules/liquidsoap/helpers/__init__.py

+__author__ = 'michel'
+
+import os
+import sys

modules/liquidsoap/helpers/silence.sh

+#!/bin/bash
+
+pack_int(){ printf "%08X\n" $1 | sed 's/\([0-9A-F]\{2\}\)\([0-9A-F]\{2\}\)\([0-9A-F]\{2\}\)\([0-9A-F]\{2\}\)/\\\\\\x\4\\\\\\x\3\\\\\\x\2\\\\\\x\1/I' | xargs printf; }
+
+pack_short(){ printf "%04X\n" $1 | sed 's/\([0-9A-F]\{2\}\)\([0-9A-F]\{2\}\)/\\\\\\x\2\\\\\\x\1/I' | xargs printf; }
+
+duration=1800
+if [[ $# -eq 1 ]]; then
+    duration=$1
+fi
+
+channels=2
+bps=16
+sample=44100
+Subchunk1Size=18
+Subchunk2Size=$(echo "$duration*$sample*$channels*$bps/8" | bc)
+ChunkSize=$((20 + $Subchunk1Size + $Subchunk2Size))
+
+echo -n RIFF
+pack_int $ChunkSize
+echo -n "WAVEfmt "
+pack_int $Subchunk1Size
+pack_short 1
+pack_short $channels
+pack_int $sample
+pack_int $((bps/8 * channels * sample))
+pack_short $((bps/8 * channels))
+pack_short $bps
+pack_short 0
+echo -n data
+pack_int $Subchunk2Size
+
+dd if=/dev/zero bs=1 count=$Subchunk2Size 2>/dev/null

modules/liquidsoap/in_filesystem.liq

+#
+#  engine
+#
+#  Playout Daemon for autoradio project
+#
+#
+#  Copyright (C) 2017-2018 Gottfried Gaisbauer <gottfried.gaisbauer@servus.at>
+#
+#  This file is part of engine.
+#
+#  engine 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
+#  any later version.
+#
+#  engine 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 engine. If not, see <http://www.gnu.org/licenses/>.
+#
+
+# a hard one
+input_fs = request.queue(id="fs")
\ No newline at end of file

modules/liquidsoap/in_soundcard.liq

+#
+#  engine
+#
+#  Playout Daemon for autoradio project
+#
+#
+#  Copyright (C) 2017-2018 Gottfried Gaisbauer <gottfried.gaisbauer@servus.at>
+#
+#  This file is part of engine.
+#
+#  engine 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
+#  any later version.
+#
+#  engine 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 engine. If not, see <http://www.gnu.org/licenses/>.
+#
+
+if a0_in != "" then
+    # we can ignore the result, since it is stored in the list 'inputs'
+    set_input(a0_in, "aura_linein_0")
+end
+
+if a1_in != "" then
+    ignore(set_input(a1_in, "aura_linein_1"))
+end
+
+if a2_in != "" then
+    ignore(set_input(a2_in, "aura_linein_2"))
+end
+
+if a3_in != "" then
+    ignore(set_input(a3_in, "aura_linein_3"))
+end
+
+if a4_in != "" then
+    ignore(set_input(a4_in, "aura_linein_4"))
+
+#    input_4 = ref output.dummy(blank())
+#    set_input(input_4, a4_in, "aura_linein_4")
+#    inputs := list.append([!input_4], !inputs)
+end
\ No newline at end of file