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#!/usr/bin/env python
#Copyright 2015 Open Platform for NFV Project, Inc. and its contributors
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
# http://www.apache.org/licenses/LICENSE-2.0
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
import sys, os, glob, random, errno
import getopt, socket
import logging, json
#sys.path.append('gen-py')
#sys.path.insert(0, glob.glob('./lib/py/build/lib.*')[0])
sys.path.insert(0, glob.glob('./lib')[0])
from dominoRPC import Communication
from dominoRPC.ttypes import *
from dominoRPC.constants import *
from thrift import Thrift
from thrift.transport import TSocket
from thrift.transport import TTransport
from thrift.protocol import TBinaryProtocol
from thrift.server import TServer
from toscaparser.tosca_template import ToscaTemplate
#from toscaparser.utils.gettextutils import _
#import toscaparser.utils.urlutils
from mapper import *
from partitioner import *
from util import miscutil
#Load configuration parameters
from domino_conf import *
class CommunicationHandler:
def __init__(self):
self.log = {}
def __init__(self, dominoserver):
self.log = {}
self.dominoServer = dominoserver
self.seqno = 0;
def openconnection(self, ipaddr, tcpport):
try:
# Make socket
transport = TSocket.TSocket(ipaddr, tcpport)
transport.setTimeout(THRIFT_RPC_TIMEOUT_MS)
# Add buffering to compensate for slow raw sockets
self.transport = TTransport.TBufferedTransport(transport)
# Wrap in a protocol
self.protocol = TBinaryProtocol.TBinaryProtocol(self.transport)
# Create a client to use the protocol encoder
self.sender = Communication.Client(self.protocol)
self.transport.open()
except Thrift.TException, tx:
logging.error('%s' , tx.message)
def closeconnection(self):
self.transport.close()
def push_template(self,template,ipaddr,tcpport):
self.openconnection(ipaddr,tcpport)
pushm = PushMessage()
pushm.domino_udid = SERVER_UDID
pushm.seq_no = self.seqno
pushm.template_type = 'tosca-nfv-v1.0'
pushm.template = template
try:
push_r = self.sender.d_push(pushm)
logging.info('Push Response received from %d' , push_r.domino_udid)
except (Thrift.TException, TSocket.TTransportException) as tx:
logging.error('%s' , tx.message)
except (socket.timeout) as tx:
self.dominoServer.handle_RPC_timeout(pushm)
except:
logging.error('Unexpected error: %s', sys.exc_info()[0])
self.seqno = self.seqno + 1
self.closeconnection()
#Heartbeat from Domino Client is received
#Actions:
# - Respond Back with a heartbeat
def d_heartbeat(self, hb_msg):
global SERVER_UDID
logging.info('heartbeat received from %d' , hb_msg.domino_udid)
hb_r = HeartBeatMessage()
hb_r.domino_udid = SERVER_UDID
hb_r.seq_no = self.seqno
self.seqno = self.seqno + 1
return hb_r
#Registration from Domino Client is received
#Actions:
#
# - Respond Back with Registration Response
def d_register(self, reg_msg):
global SERVER_UDID
#Prepare and send Registration Response
reg_r = RegisterResponseMessage()
logging.info('Registration Request received for UDID %d from IP: %s port: %d', reg_msg.domino_udid_desired, reg_msg.ipaddr, reg_msg.tcpport)
reg_r.domino_udid_assigned = self.dominoServer.assign_udid(reg_msg.domino_udid_desired)
reg_r.seq_no = self.seqno
reg_r.domino_udid = SERVER_UDID
#return unconditional success
#To be implemented:
#Define conditions for unsuccessful registration (e.g., unsupported mapping)
reg_r.responseCode = SUCCESS
#no need to send comments
#To be implemented:
#Logic for a new UDID assignment
self.seqno = self.seqno + 1
# Store the Domino Client info
# TBD: check the sequence number to ensure the most recent record is saved
self.dominoServer.registration_record[reg_r.domino_udid_assigned] = reg_msg
data = {}
data[reg_r.domino_udid_assigned] = [reg_msg.ipaddr, reg_msg.tcpport, reg_msg.supported_templates, reg_msg.seq_no]
with open(SERVER_DBFILE, 'a') as f:
json.dump(data, f)
f.close()
return reg_r
#Subscription from Domino Client is received
#Actions:
# - Save the templates & labels
# - Respond Back with Subscription Response
def d_subscribe(self, sub_msg):
global SERVER_UDID, SERVER_SEQNO
logging.info('Subscribe Request received from %d' , sub_msg.domino_udid)
if sub_msg.template_op == APPEND:
if self.dominoServer.subscribed_templateformats.has_key(sub_msg.domino_udid):
self.dominoServer.subscribed_templateformats[sub_msg.domino_udid].update(set(sub_msg.supported_template_types))
else:
self.dominoServer.subscribed_templateformats[sub_msg.domino_udid] = set(sub_msg.supported_template_types)
elif sub_msg.template_op == OVERWRITE:
self.dominoServer.subscribed_templateformats[sub_msg.domino_udid] = set(sub_msg.supported_template_types)
elif sub_msg.template_op == DELETE:
self.dominoServer.subscribed_templateformats[sub_msg.domino_udid].difference_update(set(sub_msg.supported_template_types))
if sub_msg.labels != []:
if sub_msg.label_op == APPEND:
if self.dominoServer.subscribed_labels.has_key(sub_msg.domino_udid):
self.dominoServer.subscribed_labels[sub_msg.domino_udid].update(set(sub_msg.labels))
else:
self.dominoServer.subscribed_labels[sub_msg.domino_udid] = set(sub_msg.labels)
elif sub_msg.label_op == OVERWRITE:
self.dominoServer.subscribed_labels[sub_msg.domino_udid] = set(sub_msg.labels)
elif sub_msg.label_op == DELETE:
self.dominoServer.subscribed_labels[sub_msg.domino_udid].difference_update(set(sub_msg.labels))
logging.debug('Supported Template: %s Supported Labels: %s' , self.dominoServer.subscribed_templateformats[sub_msg.domino_udid] , self.dominoServer.subscribed_labels[sub_msg.domino_udid])
#Fill in the details
sub_r = SubscribeResponseMessage()
sub_r.domino_udid = SERVER_UDID
sub_r.seq_no = self.seqno
sub_r.responseCode = SUCCESS
self.seqno = self.seqno + 1
return sub_r
#Template Publication from Domino Client is received
#Actions:
# - Parse the template, perform mapping, partition the template
# - Launch Push service
# - Respond Back with Publication Response
def d_publish(self, pub_msg):
global SERVER_UDID, SERVER_SEQNO, TOSCADIR, TOSCA_DEFAULT_FNAME
logging.info('Publish Request received from %d' , pub_msg.domino_udid)
logging.debug(pub_msg.template)
# Save as file
try:
os.makedirs(TOSCADIR)
except OSError as exception:
if exception.errno == errno.EEXIST:
logging.debug('ERRNO %d; %s exists. Creating: %s', exception.errno, TOSCADIR, TOSCADIR+TOSCA_DEFAULT_FNAME)
else:
logging.error('Error occurred in creating %s. Err no: %d', exception.errno)
#Risking a race condition if another process is attempting to write to same file
f = open(TOSCADIR+TOSCA_DEFAULT_FNAME, 'w')
for item in pub_msg.template:
print>>f, item
f.close()
# Load tosca object from file into memory
tosca = ToscaTemplate( TOSCADIR+TOSCA_DEFAULT_FNAME )
# Extract Labels
node_labels = label.extract_labels( tosca )
logging.debug('Node Labels: %s', node_labels)
# Map nodes in the template to resource domains
site_map = label.map_nodes( self.dominoServer.subscribed_labels , node_labels )
logging.debug('Site Maps: %s' , site_map)
# Select a site for each VNF
node_site = label.select_site( site_map )
logging.debug('Selected Sites: %s', node_site)
# Create per-domain Tosca files
file_paths = partitioner.partition_tosca('./toscafiles/template1.yaml',node_site,tosca.tpl)
# Create list of translated template files
# Create work-flow
# Send domain templates to each domain agent/client
# FOR NOW: send untranslated but partitioned tosca files to scheduled sites
# TBD: read from work-flow
for site in file_paths:
domino_client_ip = self.dominoServer.registration_record[site].ipaddr
domino_client_port = self.dominoServer.registration_record[site].tcpport
self.push_template(miscutil.read_templatefile(file_paths[site]), domino_client_ip, domino_client_port)
#Fill in the details
pub_r = PublishResponseMessage()
pub_r.domino_udid = SERVER_UDID
pub_r.seq_no = self.seqno
pub_r.responseCode = SUCCESS
self.seqno = self.seqno + 1
return pub_r
#Query from Domino Client is received
#Actions:
#
# - Respond Back with Query Response
def d_query(self, qu_msg):
#Fill in the details
qu_r = QueryResponseMessage()
return qu_r
class DominoServer:
def __init__(self):
self.assignedUUIDs = list()
self.subscribed_labels = dict()
self.subscribed_templateformats = dict()
self.registration_record = dict()
self.communicationHandler = CommunicationHandler(self)
self.processor = Communication.Processor(self.communicationHandler)
self.transport = TSocket.TServerSocket(port=DOMINO_SERVER_PORT)
self.tfactory = TTransport.TBufferedTransportFactory()
self.pfactory = TBinaryProtocol.TBinaryProtocolFactory()
#Use TThreadedServer or TThreadPoolServer for a multithreaded server
#self.communicationServer = TServer.TThreadedServer(self.processor, self.transport, self.tfactory, self.pfactory)
self.communicationServer = TServer.TThreadPoolServer(self.processor, self.transport, self.tfactory, self.pfactory)
def start_communicationService(self):
self.communicationServer.serve()
#For now assign the desired UDID
#To be implemented:
#Check if ID is already assigned and in use
#If not assigned, assign it
#If assigned, offer a new random id
def assign_udid(self, udid_desired):
if udid_desired in self.assignedUUIDs:
new_udid = random.getrandbits(63)
while new_udid in self.assignedUUIDs:
new_udid = random.getrandbits(63)
self.assignedUUIDs.append(new_udid)
return new_udid
else:
self.assignedUUIDs.append(udid_desired)
return udid_desired
def handle_RPC_timeout(self, RPCmessage):
if RPCmessage.messageType == PUSH:
logging.debug('RPC Timeout for message type: PUSH')
# TBD: handle each RPC timeout separately
def main(argv):
server = DominoServer()
loglevel = 'WARNING'
#process input arguments
try:
opts, args = getopt.getopt(argv,"hc:l:",["conf=","log="])
except getopt.GetoptError:
print 'DominoServer.py -c/--conf <configfile> -l/--log <loglevel>'
sys.exit(2)
for opt, arg in opts:
if opt == '-h':
print 'DominoClient.py -c/--conf <configfile> -p/--port <socketport> -i/--ipaddr <IPaddr> -l/--log <loglevel>'
sys.exit()
elif opt in ("-c", "--conf"):
configfile = arg
elif opt in ("--log"):
loglevel= arg
#Set logging level
numeric_level = getattr(logging, loglevel.upper(), None)
try:
if not isinstance(numeric_level, int):
raise ValueError('Invalid log level: %s' % loglevel)
logging.basicConfig(filename=logfile,level=numeric_level, format='%(asctime)s %(message)s', datefmt='%m/%d/%Y %I:%M:%S %p')
except ValueError, ex:
print ex.message
sys.exit(2)
logging.debug('Domino Server Starting...')
server.start_communicationService()
print 'done.'
if __name__ == "__main__":
main(sys.argv[1:])
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