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#
# sfive
#
# sfive - spreadspace streaming statistics suite is a generic
# statistic collection tool for streaming server infrastuctures.
# The system collects and stores meta data like number of views
# and throughput from a number of streaming servers and stores
# it in a global data store.
# The data acquisition is designed to be generic and extensible in
# order to support different streaming software.
# sfive also contains tools and applications to filter and visualize
# live and recorded data.
#
#
# Copyright (C) 2014 Christian Pointner <equinox@spreadspace.org>
# Markus Grueneis <gimpf@gimpf.org>
#
# This file is part of sfive.
#
# sfive is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License version 3
# as published by the Free Software Foundation.
#
# sfive 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 sfive. If not, see <http://www.gnu.org/licenses/>.
#
import os
try:
import simplejson as json
except ImportError:
json = None
from flumotion.component.plugs import base
from flumotion.common import messages, i18n, log
from flumotion.common.poller import Poller
from twisted.internet import protocol, reactor
from socket import error as socket_error
import datetime
from flumotion.common.i18n import N_
T_ = i18n.gettexter()
_DEFAULT_POLL_INTERVAL = 5 # in seconds
_RECONNECT_TIMEOUT = 2 # in seconds
_MAX_PACKET_SIZE = 8192 # in bytes
__version__ = "$Rev$"
class SFiveProto(protocol.ConnectedDatagramProtocol):
def __init__(self, plug):
self._plug = plug
def stopProtocol(self):
self._plug.debug('SFive: protocol stopped')
def startProtocol(self):
self._plug.debug('SFive: protocol started')
self._plug._socketReady()
def datagramReceived(self, data):
self._plug.debug('SFive: received datagram: "%s" (will get ignored)', data)
def connectionFailed(self, failure):
self._plug.warning('SFive: connection failed: %s', failure.getErrorMessage())
self._plug._socketError()
def sendDatagram(self, data):
try:
return self.transport.write(data)
except socket_error as err:
self._plug.warning('SFive: sending datagram failed: %s', err)
self._plug._socketError()
class ComponentSFivePlug(base.ComponentPlug):
"""Class to send statistics to the spreadspace streaming statistic suite"""
### ComponentPlug methods
def start(self, component):
self.debug('SFive: plug loaded')
self._sfivepoller = None
self._component = component
if not self._hasImport():
return
properties = self.args['properties']
self._socket = properties['socket']
self._hostname = properties['hostname']
self._content_id = properties.get('content-id')
self._format = properties.get('format')
self._quality = properties.get('quality')
tagstring = properties.get('tags', '')
self._tags = [x.strip() for x in tagstring.split(',')]
self._duration = properties.get('duration', _DEFAULT_POLL_INTERVAL)
self._sfivepoller = Poller(self._updateSFive, self._duration, start=False)
self._proto = None
self._conn = None
reactor.callLater(_RECONNECT_TIMEOUT, self._initSocket)
def _hasImport(self):
"""Check simplejson availability"""
if not json:
m = messages.Warning(T_(N_(
"Cannot import module '%s'.\n"), 'simplejson'),
mid='simplejson-import-error')
m.add(T_(N_(
"The SFive plug for this component is disabled.")))
self._component.addMessage(m)
return False
return True
def stop(self, component):
if self._sfivepoller:
self._sfivepoller.stop()
if self._conn:
self._conn.stopListening()
def _initSocket(self):
self.info('SFive: trying to (re)connect to %s...', self._socket)
self._proto = SFiveProto(self)
self._conn = reactor.connectUNIXDatagram(self._socket, self._proto, maxPacketSize=_MAX_PACKET_SIZE)
def _socketError(self):
if self._sfivepoller:
self._sfivepoller.stop()
if self._conn:
self._conn.stopListening()
reactor.callLater(_RECONNECT_TIMEOUT, self._initSocket)
def _socketReady(self):
self.info('SFive: connection to sfive hub established')
self._sendInit()
if self._sfivepoller:
self._old_bytes_received = self._component.getBytesReceived()
self._old_bytes_sent = self._component.getBytesSent()
self._start_time = datetime.datetime.utcnow().replace(microsecond=0)
self._sfivepoller.start()
def _sendInit(self):
initdata = { "hostname": self._hostname,
"streamer-id": { "content-id": self._content_id, "format": self._format, "quality": self._quality },
"tags": self._tags }
self._proto.sendDatagram('%s\n' % (json.dumps(initdata)))
def _updateSFive(self):
client_count = self._component.getClients()
bytes_received = self._component.getBytesReceived()
bytes_sent = self._component.getBytesSent()
bytes_received_diff = bytes_received - self._old_bytes_received
self._old_bytes_received = bytes_received
bytes_sent_diff = bytes_sent - self._old_bytes_sent
self._old_bytes_sent = bytes_sent
data = { "start-time": self._start_time.isoformat('T'),
"duration-ms": self._duration * 1000,
"data": {
"client-count": client_count,
"bytes-received": bytes_received_diff,
"bytes-sent": bytes_sent_diff
}
}
self._proto.sendDatagram('%s\n' % (json.dumps(data)))
self._start_time = datetime.datetime.utcnow().replace(microsecond=0)
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