From Python to shell script

- Allowing to run mpd + icecast2 + fip relay with metadatas on a VM
  with 128Mo of memory.
- Calculating when to update (given the end field in the JSON)

README.txt

@@ -1,13 +1,14 @@
 Usage :
 -------
 
-./fip_current.py [-c CONFIG.ini] [-u]
+Edit the script to change the value of :
+	host -> icecast2 host & port
+	mount -> mountpoint name
+	login -> icecast2 login
+	passwd -> icecast2 password
 
-#Show current song metadata
-./fip_current.py 
-
-#Update icecast2 metadata
-./fip_current.py -c CONFIG.ini -u
+Then run :
+	./fip_current.sh
 
 Instances :
 -----------
@@ -19,8 +20,9 @@ Requierments :
 --------------
 
 icecast2
-python3
-python3-requests
+jq
+curl
+sed
 
 Icecast2 configuration sample :
 -------------------------------
@@ -32,9 +34,3 @@ Icecast2 configuration sample :
 	<local-mount>/fip-metadata.mp3</local-mount>
 	<relay-shoutcast-metadata>0</relay-shoutcast-metadata>
 </relay>
-
-Crontab :
----------
-
-#Update every minute
-* * * * * /path/fip_current.py -uc /path/conf.ini

conf-sample.ini

@@ -1,7 +0,0 @@
-[conf]
-debug=false
-loop-delay=15
-host=127.0.0.1:8000
-mount=/fip.mp3
-login=admin
-password=hackme

fip_current.py

@@ -1,185 +0,0 @@
-#!/usr/bin/python3
-#
-# Copyright 2016 Yann Weber
-#
-# This program is free software: you can redistribute it and/or modify
-# it under the terms of the GNU General Public License as published by
-# the Free Software Foundation, either version 3 of the License, or
-# any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-# GNU General Public License for more details.
-#
-# You should have received a copy of the GNU General Public License
-# along with this program.  If not, see <http://www.gnu.org/licenses/>.
-
-import sys
-import time
-import requests
-import configparser
-from argparse import ArgumentParser
-
-API_URL = 'http://www.fipradio.fr/livemeta/7'
-DEBUG = False
-
-
-def main():
-    """ Parse arguments and run wanted function """
-    parser = ArgumentParser(description="Fetch FIP radio stream metadata")
-    parser.add_argument(
-        '-u', '--icecast-update',
-        dest='update',
-        action='store_const',
-        const=True,
-        default=False,
-        help="Run Icecast2 metadata update")
-    parser.add_argument(
-        '-c', '--config',
-        dest='conf',
-        type=str,
-        default='conf.ini',
-        help="Configuration file")
-    parser.add_argument(
-        '-l', '--loop',
-        dest='loop',
-        action='store_const',
-        const=True,
-        default=False,
-        help="Combined with -u enables loop update")
-    """
-    parser.add_argument(
-        '-d', '--loop-delay',
-        dest='delay',
-        type=int,
-        default=15,
-        help="Loop delay in seconds")
-    """
-    args = parser.parse_args()
-    conf = configparser.ConfigParser()
-    conf.read(args.conf)
-    debug = conf.get('conf', 'debug', fallback="False").lower() == 'true'
-    globals()['DEBUG'] = debug
-    if args.update:
-        host = conf.get('conf', 'host', fallback='127.0.0.1:8000')
-        mount = conf.get('conf', 'mount', fallback='/example.ogg')
-        login = conf.get('conf', 'login', fallback='admin')
-        password = conf.get('conf', 'password', fallback='hackme')
-        if args.loop:
-            delay = conf.get('conf', 'loop-delay', fallback='15')
-            try:
-                delay = int(delay)
-            except ValueError:
-                msg = "loop-delay expected to be an integer '%s' found"
-                raise ValueError( msg % delay)
-            prev = None
-            while True:
-                try:
-                    if globals()['DEBUG']:
-                        print("Update start");
-                    prev = icecast_update(host, mount, login, password, prev)
-                    if globals()['DEBUG']:
-                        print("Updated");
-                    time.sleep(delay)
-                except Exception as e:
-                    prev = None
-                    print(str(e), file=sys.stderr)
-                
-        else:
-            icecast_update(host, mount, login, password)
-    else:
-        print(format_current())
-
-
-def get_all():
-    """ Return a dict containing all FIP API metadatas """
-    res = requests.get(API_URL)
-    if res.status_code != 200:
-        msg = "Got status code %d for %s"
-        msg %= (res.status_code, API_URL)
-        raise RuntimeError(msg)
-    return res.json()
-
-
-def get_current():
-    """ Return a dict containing currently playing song metadatas """
-    datas = get_all()
-    if len(datas['levels'])==2:
-        level = 1
-    else:
-        level = 0
-    position = datas['levels'][level]['position']
-    item_id = datas['levels'][level]['items'][position]
-    item = datas['steps'][item_id]
-    expt = ['authors', 'title', 'titreAlbum', 'visual', 'lienYoutube']
-    for k in expt:
-        if k not in item:
-            item[k] = ''
-
-    return item
-
-
-def format_current():
-    """ Return a string representing formated current playing song
-        metadatas """
-    item = get_current()
-    infos = """Title :\t\t{title}
-Authors :\t{author}
-Album :\t\t{album}
-Visual :\t{image}
-Youtube :\t{youtube}
-"""
-    res = infos.format(
-        title=item['title'].title(),
-        author=item['authors'].title(),
-        album=item['titreAlbum'].title(),
-        image=item['visual'],
-        youtube=item['lienYoutube'])
-    if globals()['DEBUG']:
-        res = "[debug mode]\n"+res
-    return res
-
-
-def icecast_infos():
-    """ Return formated Icecast2 metadatas from FIP current song
-        metadatas """
-    item = get_current()
-    infos = item['title'].title()
-    if len(item['authors']) > 0:
-        infos += ' - '+item['authors'].title()
-    if len(item['titreAlbum']):
-        infos += ' ('+item['titreAlbum'].title()+')'
-    if globals()['DEBUG']:
-        infos = infos + str(time.time())
-    return infos
-
-
-def icecast_update(host, mount, login=None, password=None, prev = None):
-    """ Update metadatas to an Icecast2 mount """
-    infos = icecast_infos()
-    url = "http://{host}/admin/metadata"
-    url = url.format(host=host)
-    params = {
-        'mount': mount,
-        'mode': 'updinfo',
-        'song': infos}
-    auth = None
-    if login is not None and password is not None:
-        auth = (login, password)
-    
-    if infos != prev:
-        try:
-            res = requests.get(url, auth=auth, params=params)
-        except requests.exceptions.ConnectionError:
-            raise RuntimeError("Connection refuse for "+res.url)
-
-        if res.status_code != 200:
-            msg = "Got status code %d for %s"
-            msg %= (res.status_code, res.url)
-            raise RuntimeError(msg)
-
-    return infos
-
-if __name__ == '__main__':
-    main()

fip_current.sh

@@ -0,0 +1,38 @@
+#!/bin/sh
+host="ICECAST2_HOST:PORT"
+mount="/MOUNTPOINT"
+login="admin"
+passwd="hackme"
+
+
+
+fip_url="https://www.fip.fr/livemeta/7"
+fipmeta="/tmp/fip-meta"
+start=$(date "+%s")
+touch $fipmeta
+while [ 1 ]
+do
+	q='.["steps"][.["levels"][0]["items"][.["levels"][0]["position"]]] |.["end"], .["title"]+" - "+.["authors"]+" ("+.["titreAlbum"]+")"'
+	infos=$(curl -s $fip_url | jq -r "$q" )
+	title=$(echo $infos |cut -d" " -f"2-"| sed 's/[^ ]\+/\L\u&/g')
+	end=$(echo $infos |cut -d" " -f1)
+
+	if [ "$(cat $fipmeta)" != "$title" ]
+	then
+		echo -n $title > $fipmeta
+		echo $title
+		curl -s -G "http://${login}:${passwd}@${host}/admin/metadata" \
+			-d "mount=${mount}"
+			-d "mode=updinfo"
+			--data-urlencode "song=${title}" > /dev/null
+	fi
+
+	now=$(date "+%s")
+	if [ "$now" -gt "$end" ]
+	then
+		sleep 1
+	else
+		delay=$(expr $end - $now)
+		sleep $delay
+	fi
+done

init_script

@@ -9,14 +9,11 @@
 # Description:       Start updating Icecast2 metadatas using FIP radio wep API
 ### END INIT INFO
 
-DPATH=/PUT/SCRIPT/PATH/HERE
+DPATH="PATH TO SCRIPT"
 
-SCRIPT="fip_current.py"
-DAEMON="${DPATH}/${SCRIPT}"
-CONFIG="${DPATH}/conf.ini"
+DAEMON="${DPATH}/fip_current.sh"
 NAME="fip-current"
 DESC="fip-current update script"
-DAEMON_OPTS="-ul -c $CONFIG"
 PIDFILE="/run/fip-current.pid"
 
 set_path()
@@ -38,14 +35,14 @@ case $1 in
 			echo -n " allready running"
 			log_end_msg 1
 		else
-			start-stop-daemon --quiet --start --background -m -p $PIDFILE --exec $DAEMON -- $DAEMON_OPTS
+			start-stop-daemon --quiet --start --background -m -p $PIDFILE --exec $DAEMON
 			log_end_msg $?
 		fi
 		
 		;;
 	stop)
 		log_daemon_msg "Stopping $DESC"
-		start-stop-daemon --stop -p $PIDFILE --remove-pidfile -x $DAEMON
+		start-stop-daemon --stop -p $PIDFILE --remove-pidfile
 		log_end_msg $?
 		;;
 	restart)