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#!/usr/bin/python
#
# flufigut
#
# flufigut, the flumotion configuration utility, is a simple tool
# that generates flumotion configuration files using pyhton jinja2
# template engine and simplejson. flufigut generates planet.xml
# and worker.xml files from configuration templates and an easy to
# understand representation of the flow structure written in json.
#
#
# Copyright (C) 2012 Christian Pointner <equinox@spreadspace.org>
# Michael Gebetsroither <michael@mgeb.org>
#
# This file is part of flufigut.
#
# flufigut 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 2 of the License, or
# any later version.
#
# flufigut 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 flufigut. If not, see <http://www.gnu.org/licenses/>.
#
import string
import random
import sys
import simplejson as json
from exceptions import *
from jinja2 import Environment, FileSystemLoader
### helper functions ############################################
#
def rand_string(size=8, chars=string.ascii_lowercase + string.ascii_uppercase + string.digits):
return ''.join(random.choice(chars) for x in range(size))
### parse json file #############################################
#
if len(sys.argv) <= 2:
raise SystemExit("No template name and or configuration file given")
cf = open(sys.argv[2], 'r')
config = json.load(cf);
cf.close();
### initialization ##############################################
#
globals = config['globals']
input = config['input']
transcode = config['transcode']
stream = config['stream']
atmosphere = {}
flow = {}
### sanity checks ###############################################
machines = {}
# TODO:
# - worker<->machine only 1:1
# - list of workers (mark usage later)
### generate input components ###################################
flow['input'] = {}
flow['input']['raw-input'] = {
'type': input['source'],
'desc': "capture raw AV from %s" % input['source'],
'worker': 'input',
'properties': {},
}
for property in input.keys():
if property == 'samplerate':
flow['input']['raw-input']['properties'][property] = input['samplerate']
elif property == 'resolution':
flow['input']['raw-input']['properties']['width'] = globals['resolutions'][input[property]]['width']
flow['input']['raw-input']['properties']['height'] = globals['resolutions'][input[property]]['height']
flow['input']['raw-input']['properties']['framerate'] = globals['resolutions'][input[property]]['rate']
elif property != 'source':
flow['input']['raw-input']['properties'][property] = input[property]
samplerates = [ ]
resolutions = [ ]
for format in transcode.keys():
if 'samplerate' in globals['formats'][format]:
samplerate = globals['formats'][format]['samplerate']
if samplerate not in samplerates:
if input['samplerate'] != samplerate:
samplerates.append(samplerate)
for profile in transcode[format]:
resolution = globals['profiles'][profile]['video']
if resolution not in resolutions:
if input['resolution'] != resolution:
if globals['resolutions'][resolution]['rate'] != globals['resolutions'][input['resolution']]['rate']:
raise SystemExit("video rate conversion is not yet supported!!!")
resolutions.append(resolution)
for resolution in resolutions:
flow['input']['resize-%s' % resolution] = {
'type': 'video-resize',
'desc': "resize video to %sx%s" % (globals['resolutions'][resolution]['width'], globals['resolutions'][resolution]['height']),
'worker': 'input',
'feeder': 'raw-input:video',
'properties': {
'width': globals['resolutions'][resolution]['width'],
'height': globals['resolutions'][resolution]['height'],
},
}
for samplerate in samplerates:
flow['input']['resample-%s' % samplerate] = {
'type': 'audio-resample',
'desc': "resample audio to %s Hz" % samplerate,
'worker': 'input',
'feeder': 'raw-input:audio',
'properties': {
'samplerate': samplerate,
},
}
### generate encoder and muxer components #######################
flow['encoder_video'] = {}
flow['encoder_audio'] = {}
flow['muxer'] = {}
for format in transcode.keys():
for profile in transcode[format]:
video_encoder = 'none'
if 'video' in globals['formats'][format]:
encoder = globals['formats'][format]['video']
resolution = globals['profiles'][profile]['video']
bitrate = globals['bitrates'][encoder][resolution]
if resolution == input['resolution']:
feeder = 'raw-input:video'
else:
feeder = 'resize-%s' % resolution
video_encoder = 'encode-%s-%s' % (encoder, resolution)
if video_encoder not in flow['encoder_video'].keys():
flow['encoder_video'][video_encoder] = {
'type': '%s-encode' % encoder,
'desc': "%s encoder for %sx%s" % (encoder, globals['resolutions'][resolution]['width'], globals['resolutions'][resolution]['height']),
'worker': 'encoder-%s' % encoder,
'feeder': feeder,
'properties': {
'bitrate': bitrate,
},
}
audio_encoder = 'none'
if 'audio' in globals['formats'][format]:
encoder = globals['formats'][format]['audio']
bitrate = globals['profiles'][profile]['audio']
if 'samplerate' in globals['formats'][format]:
samplerate = globals['formats'][format]['samplerate']
feeder = 'resample-%s' % samplerate
else:
samplerate = input['samplerate']
feeder = 'raw-input:audio'
audio_encoder = 'encode-%s-%i-%i' % (encoder, bitrate, samplerate)
if audio_encoder not in flow['encoder_audio']:
flow['encoder_audio'][audio_encoder] = {
'type': '%s-encode' % encoder,
'desc': "%s encoder for %i kbit/s @ %i Hz" % (encoder, bitrate, samplerate),
'worker': 'encoder-%s' % encoder,
'feeder': feeder,
'properties': {
'bitrate': bitrate,
},
}
muxer = globals['formats'][format]['muxer']
flow['muxer']['muxer-%s-%s' % (format, profile)] = {
'type': '%s-mux' % muxer,
'desc': "%s muxer profile %s" % (format, profile),
'worker': 'muxer-%s' % muxer,
'feeder_audio': audio_encoder,
'feeder_video': video_encoder,
'properties': {},
}
### generate streamer components ################################
flow['streamer'] = {}
for cluster in stream.keys():
streamer_cnt = stream[cluster]['count']
port = stream[cluster]['port']
for idx in range(streamer_cnt):
worker = '%s%i'%(cluster, idx+1)
for machine in globals['machines'].keys():
if worker in globals['machines'][machine]:
if machine in machines:
if 'porter' in machines[machine]:
if port in machines[machine]['porter']:
raise SystemExit("Porter: machine %s already uses port %i" % (machine, port))
else:
machines[machine]['porter'] = {}
else:
machines[machine] = { 'porter': {} }
machines[machine]['porter'][port] = {
'socket-path': "porter-%s"%(rand_string()),
'username': rand_string(size=12),
'password': rand_string(size=12),
}
atmosphere['porter-%s-%i'%(machine, port)] = {
'type': "porter",
'desc': "Porter for %s on port %i"%(machine, port),
'worker': worker,
'properties': {
'port': port,
'socket-path': machines[machine]['porter'][port]['socket-path'],
'username': machines[machine]['porter'][port]['username'],
'password': machines[machine]['porter'][port]['password'],
},
}
for format in stream[cluster]['formats']:
for profile in transcode[format]:
feeder = 'muxer-%s-%s' % (format, profile)
name = '%s-%s%i-%s-%s' % (stream[cluster]['type'], cluster, idx+1, format, profile)
mount_point = '/%s-%s.%s' % (format, profile, globals['formats'][format]['muxer'])
if streamer_cnt > 1:
hostname = "%s.%s" % (stream[cluster]['hostname'] % (idx+1), globals['domain'])
if idx != 0:
hostname_next = "%s.%s" % (stream[cluster]['hostname'] % (idx), globals['domain'])
else:
hostname_next = "%s.%s" % (stream[cluster]['hostname'] % (streamer_cnt), globals['domain'])
else:
hostname = "%s.%s" % (stream[cluster]['hostname'], globals['domain'])
flow['streamer'][name] = {
'type': "%s-stream" % stream[cluster]['type'],
'desc': "%s streamer for %s-%s (part %i of %s cluster)" % (stream[cluster]['type'], format, profile, idx+1, cluster),
'worker': worker,
'feeder': feeder,
'rrd_clients' : "%s/%s_clients.rrd" % (globals['rrd-dir'], name),
'rrd_bytes' : "%s/%s_bytes.rrd" % (globals['rrd-dir'], name),
'properties': {
'description': globals['description'],
'type': 'slave',
'porter-socket-path': machines[machine]['porter'][port]['socket-path'],
'porter-username': machines[machine]['porter'][port]['username'],
'porter-password': machines[machine]['porter'][port]['password'],
'mount-point': mount_point,
'hostname': hostname,
'port': port,
}
}
for prop in stream[cluster]:
if prop == 'max-con':
flow['streamer'][name]['properties']['client-limit'] = stream[cluster][prop]
if streamer_cnt > 1:
flow['streamer'][name]['properties']['redirect-on-overflow'] = "http://%s:%i%s" % (hostname_next, port, mount_point)
if prop == 'max-bw':
flow['streamer'][name]['properties']['bandwidth-limit'] = stream[cluster][prop]
if streamer_cnt > 1:
flow['streamer'][name]['properties']['redirect-on-overflow'] = "http://%s:%i%s" % (hostname_next, port, mount_point)
if prop == 'burst-on-connect':
flow['streamer'][name]['properties']['burst-on-connect'] = 'true'
flow['streamer'][name]['properties']['burst-time'] = stream[cluster][prop]
### initialize and render templates #############################
#
env = Environment(loader=FileSystemLoader('../templates/%s/' % (sys.argv[1])), line_statement_prefix = '%%')
template = env.get_template('planet.xml')
planet = template.render(globals=globals, atmosphere=atmosphere, flow=flow)
sys.stdout.write(planet.encode("utf8"))
### end #########################################################
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