/
sim.py
158 lines (145 loc) · 6.02 KB
/
sim.py
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
import json
import neo4j
import math
import random
import socket
import math
import threading
import pika
import time
import helper
import select
import Queue
from operator import itemgetter
with open('conf.json','r') as f :
conf = json.loads(f.read())
counter = 0
reAssign = conf['reAssign']
link_speed = conf['link_speed']
radio_radius = conf['radio_radius']
packet_size = conf['packet_size']
prop_speed_channel = conf['prop_speed_channel']
x_reliability = conf['x_reliability']
x_delay = conf['x_delay']
x_hc = conf['x_hc']
reliability_constant = conf['reliability_constant']
hc_constant = conf['hc_constant']
delay_constant = conf['delay_constant']
db_address = conf['db_address']
SERVER_IP = '127.0.0.1'
SERVER_PORT = 12345
MAX_DATA_SIZE = 40000
MAX_SIZE = 50000
class Node (object) :
def __init__(self,Id) :
self.id = Id
self.bindNodeServer()
self.forwardingCache = {}
self.forwardingQueue = Queue.Queue()
self.incompleteData = {}
self.openFds = {}
client = helper.rpc_client()
client_fd = socket.socket(socket.AF_INET,socket.SOCK_DGRAM)
client_fd.setsockopt(socket.SOL_SOCKET,socket.SO_REUSEADDR,1)
self.transferingFd = client_fd
response = client.call('SRV UPDTE'+json.dumps({'ip':self.server_ip,'port':self.server_port,'id':self.id}))
threading.Thread(target=self.nodeParameterUpdateRequest,args=()).start()
threading.Thread(target=self.forwardPacket,args=()).start()
def nodeParameterUpdateRequest(self) :
time.sleep(1)
while True :
time.sleep(1)
#client = helper.rpc_client()
#response = client.call('GPS UPDTE'+json.dumps({'id':self.id}))
def bindNodeServer(self) :
self.server = socket.socket(socket.AF_INET,socket.SOCK_DGRAM)
self.server.setsockopt(socket.SOL_SOCKET,socket.SO_REUSEADDR,1)
self.server.bind(('127.0.0.1',0))
addr = self.server.getsockname()
self.server_ip = addr[0]
self.server_port = addr[1]
threading.Thread(target=self.runNodeServer,args=()).start()
def transferData(self,end,file_path) :
FILE = file_path.split('/')[-1]
with open(file_path,'rb') as f :
data = f.read()
time_Stamp = helper.md5(time.time())[:6] + helper.md5(data[:100])[:6]
client = helper.rpc_client()
reply = json.loads(client.call('GET ROUTE' + json.dumps({'start':self.id,'end':end})))
packets_seq = [ '!_$@$_!' + FILE + '!_$@$_!' + str(i) + '!_$@$_!' + time_Stamp + '!_$@$_!' for i in range((len(data)/MAX_DATA_SIZE)+1)]
client = socket.socket(socket.AF_INET,socket.SOCK_DGRAM)
count = 00
for item in packets_seq :
client.sendto('FWRD DATA' + json.dumps({'next':reply['next'],'start':self.id,'end':end}) + '!_$@damei@$_!' + FILE + '!_$@damei@$_!' + str(count) + '!_$@damei@$_!' + time_Stamp + '!_$@damei@$_!' + data[(count)*MAX_DATA_SIZE:(count+1)*MAX_DATA_SIZE],(reply['server_ip'],reply['server_port']))
ack_data , ack_addr = client.recvfrom(MAX_DATA_SIZE)
count += 1
client.sendto('FWRD DATA' + json.dumps({'next':reply['next'],'start':self.id,'end':end}) + '!_$@damei@$_!' + FILE + '!_$@damei@$_!ENDENDEND!_$@damei@$_!' + time_Stamp + '!_$@damei@$_!',(reply['server_ip'],reply['server_port']))
ack_data , ack_addr = client.recvfrom(MAX_DATA_SIZE)
def forwardPacket(self) :
while True :
req = self.forwardingQueue.get()
params = req['params']
segment = req['segment']
if params['next'] in self.forwardingCache :
if time.time() - self.forwardingCache[params['next']]['time'] < conf['cache_update_limit'] :
reply = self.forwardingCache[params['next']]
reply.update({'next':params['next']})
else :
print 'Expired, Updating cache' , params , self.id
client = helper.rpc_client()
reply = json.loads(client.call('GET ROUTE' + json.dumps({'start':self.id,'end':params['end']})))
self.forwardingCache.update({reply['next']:{'time':time.time(),'server_ip':reply['server_ip'],'server_port':reply['server_port']}})
else :
print 'Not in cache' , params , self.id
client = helper.rpc_client()
reply = json.loads(client.call('GET ROUTE' + json.dumps({'start':self.id,'end':params['end']})))
self.forwardingCache.update({params['next']:{'time':time.time(),'server_ip':reply['server_ip'],'server_port':reply['server_port']}})
self.transferingFd.sendto('FWRD DATA' + json.dumps({'start':params['start'],'next':reply['next'],'end':params['end']}) + segment,(reply['server_ip'],reply['server_port']))
ack_Data , ack_addr = self.transferingFd.recvfrom(MAX_SIZE)
def runNodeServer(self) :
# self.server.listen(100)
# inputFd = [ self.server ]
# outputFd = []
# while True :
# readFd , writeFd , expFd = select.select(inputFd,outputFd,[])
# for fd in readFd :
# if fd is self.server :
# client , client_addr = self.server.accept()
# inputFd.append(client)
# else :
while True :
data , addr = self.server.recvfrom(MAX_SIZE)
if len(data) > 9 :
header = data[:9]
if header == 'FWRD DATA' :
array = data[9:].split('!_$@damei@$_!')
params = json.loads(array[0])
segment = ''.join([ '!_$@damei@$_!' + item for item in array[1:]])
if params['end'] == self.id :
identifier = array[3]
packets_seq = array[2]
file_name = array[1]
try :
actual_fragment = array[4]
except IndexError :
pass
if packets_seq == 'ENDENDEND' :
dataArray = sorted(self.incompleteData[identifier]['data'],key=itemgetter(0))
file_name = self.incompleteData[identifier]['name']
print 'Done for file : ' + file_name
with open('output.mp3','wb') as f :
f.write(''.join([ item[1] for item in dataArray]))
self.incompleteData.pop(identifier)
else :
if identifier not in self.incompleteData :
self.incompleteData.update({identifier:{'data':[],'name':file_name}})
else :
self.incompleteData[identifier]['data'].append([int(packets_seq),actual_fragment])
else :
self.forwardingQueue.put({'params':params,'segment':segment})
self.server.sendto('ack',addr)
nodes = [ Node(i+1) for i in range(conf['nodes'])]
time.sleep(2)
nodes[2].transferData(13,'data.mp3')
while True :
time.sleep(1)