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#!/usr/bin/python
#
# 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) 2014-2015 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/>.
#
from errno import EINTR, EMSGSIZE, EAGAIN, EWOULDBLOCK, ECONNREFUSED, ENOBUFS
from twisted.internet import protocol, reactor, unix
import socket
from time import sleep
import simplejson as json
import datetime
import rrdtool
_MAX_PACKET_SIZE = 262144 # in bytes
__version__ = "$Rev$"
class SFivePort(unix.ConnectedDatagramPort):
def __init__(self, addr, proto, maxPacketSize=8192, mode=0666, bindAddress=None, reactor=None):
unix.ConnectedDatagramPort.__init__(self, addr, proto, maxPacketSize, mode, bindAddress, reactor)
def write(self, data):
try:
return self.socket.send(data)
except socket.error, se:
no = se.args[0]
if no == EINTR:
return self.write(data)
elif no == EMSGSIZE:
raise error.MessageLengthError, "message too long"
elif no == ECONNREFUSED:
self.protocol.connectionRefused()
elif no == EAGAIN:
# the send buffer seems to be full - let's wait a little while...
# this is not really a good solution but better than the aproach
# of twisted which just drops the datagram...
sleep(0.01)
return self.write(data)
else:
raise
class SFiveProto(protocol.ConnectedDatagramProtocol):
def __init__(self, importer):
self._importer = importer
def startProtocol(self):
self._importer._socketReady()
def datagramReceived(self, data):
print 'SFive: received datagram: "%s" (will get ignored)' % (data)
def connectionFailed(self, failure):
print 'SFive: connection failed: %s' % (failure.getErrorMessage())
self._importer._socketError()
def sendDatagram(self, data):
try:
return self.transport.write(data)
except socket.error as err:
print 'SFive: sending datagram failed: %s' % (err)
self._importer._socketError()
class FlumotionRRD():
"""Class to batch import flumotion rrd statistics into the spreadspace streaming statistic suite"""
def __init__(self, properties):
print 'SFive: flumotion rrd file importer loaded'
self._socket = properties['socket']
self._hostname = properties['hostname']
self._content_id = properties['content']
self._format = properties['format']
self._quality = properties['quality']
self._tags = properties['tags']
self._bytes_rrdfile = properties['bytes-rrdfile']
self._clients_rrdfile = properties['clients-rrdfile']
self._proto = None
self._conn = None
def run(self):
if self._initRRD():
reactor.callWhenRunning(self._initSocket)
reactor.run()
def _initRRD(self):
try:
info_bytes = rrdtool.info(self._bytes_rrdfile)
step_bytes = info_bytes['step']
lastupdate_bytes = info_bytes['last_update']
info_clients = rrdtool.info(self._clients_rrdfile)
step_clients = info_clients['step']
lastupdate_clients = info_clients['last_update']
self._duration = step_bytes
if step_bytes != step_clients:
print 'SFive: ERROR step size of the RRD Files don\'t match'
return False
self._end = lastupdate_bytes if lastupdate_bytes < lastupdate_clients else lastupdate_clients
if lastupdate_bytes != lastupdate_clients:
print 'SFive: WARNING the last update timestamp of the RRD Files don\'t match - will use smaller timestamp'
return False
print 'SFive: will use 7 days of data ending with %s using a step size of %d seconds' % (
datetime.datetime.utcfromtimestamp(self._end).isoformat('T') + 'Z', self._duration)
except rrdtool.error as e:
print 'SFive: rrdtool-error: %s' % (e)
return False
return True
def _initSocket(self):
print 'SFive: trying to connect to %s...' % (self._socket)
self._proto = SFiveProto(self)
self._conn = SFivePort(self._socket, self._proto, _MAX_PACKET_SIZE, 0666, None, reactor)
self._conn.startListening()
def _socketError(self):
if self._conn:
self._conn.stopListening()
reactor.stop()
def _socketReady(self):
print 'SFive: connection to sfive hub established'
# we are using datagram sockets for now -> must use stateless protocol
# self._sendInit()
cnt = self._sendRRDData()
print 'SFive: sent %d datasets' % (cnt)
reactor.stop()
def _sendRRDData(self):
try:
data_bytes = rrdtool.fetch(self._bytes_rrdfile, 'AVERAGE', '-s', 'end-7d', '-e', '%d' % self._end)
data_clients = rrdtool.fetch(self._clients_rrdfile, 'AVERAGE', '-s', 'end-7d', '-e', '%d' % self._end)
except rrdtool.error as e:
print 'SFive: rrdtool-error: %s' % (e)
return 0
ts = data_bytes[0][0]
max = len(data_bytes[2])
if max < 1:
return 0
cnt = 0
for idx in range(0, max - 1):
try:
self._sendDatasetFull(datetime.datetime.utcfromtimestamp(ts), self._duration,
data_clients[2][idx][0], data_bytes[2][idx][0])
ts += self._duration
cnt += 1
except ValueError as err:
print 'SFive: timestamp "%d" seems wrong: %s' % (ts, err)
return cnt
def _sendDatasetFull(self, timestamp, duration, client_count, bytes_sent):
client_count = int(round(client_count)) if client_count else 0
bytes_sent = int(round(bytes_sent)) if bytes_sent else 0
data = { "version": 2, "hostname": self._hostname,
"stream": {
"content": self._content_id,
"format": self._format,
"quality": self._quality
},
"tags": self._tags,
"start-time": timestamp.isoformat('T') + 'Z',
"duration-ms": duration * 1000,
"data": {
"client-count": client_count,
"bytes-sent": bytes_sent
}
}
self._proto.sendDatagram('%s\n' % (json.dumps(data)))
def _sendInit(self):
initdata = { "version": 2, "hostname": self._hostname,
"stream": { "content": self._content_id, "format": self._format, "quality": self._quality },
"tags": self._tags }
self._proto.sendDatagram('%s\n' % (json.dumps(initdata)))
def _sendDataset(self, timestamp, duration, client_count, bytes_sent):
client_count = int(round(client_count)) if client_count else 0
bytes_sent = int(round(bytes_sent)) if bytes_sent else 0
data = { "start-time": timestamp.isoformat('T') + 'Z',
"duration-ms": duration * 1000,
"data": {
"client-count": client_count,
"bytes-sent": bytes_sent
}
}
self._proto.sendDatagram('%s\n' % (json.dumps(data)))
if __name__ == '__main__':
import argparse
parser = argparse.ArgumentParser(description='SFive Flumotion RRD Importer')
parser.add_argument('--socket', '-s', dest='socket', required=True,
help='the path to the data socket of the local SFive hub')
parser.add_argument('--hostname', '-n', dest='hostname', required=True,
help='the hostname of the machine')
parser.add_argument('--content', '-c', dest='content', required=True,
help='the content (i.e. av)')
parser.add_argument('--format', '-f', dest='format', required=True,
help='the format (i.e. webm)')
parser.add_argument('--quality', '-q', dest='quality', required=True,
help='the quality (i.e. high)')
parser.add_argument('--tag', '-t', dest='tags', action='append',
help='tag to be added to the statistic data, can be invoked several times')
parser.add_argument('--bytes-rrdfile', '-b', dest='bytes-rrdfile', required=True,
help='path to the RRD File containing the bytes sent')
parser.add_argument('--clients-rrdfile', '-N', dest='clients-rrdfile', required=True,
help='path to the RRD File containing the number of clients')
args = vars(parser.parse_args())
if not args['tags']:
args['tags'] = []
importer = FlumotionRRD(args)
importer.run()
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