/
master_tracker.py
199 lines (175 loc) · 6.65 KB
/
master_tracker.py
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import zmq
import time
import sys
from zmq import Socket
import pandas as pd
import sysv_ipc as ss
import json
from io import StringIO
#Global Variables
LOOKUP_TABLE:pd.DataFrame=None
sharedMemory=None
semaphore=None
portMaster=None
#################
def initMemory(id:int):
global sharedMemory
try:
sharedMemory = ss.SharedMemory(id, ss.IPC_CREAT)
except:
print('error while loading the shared memory')
def initSemaphore(id:int):
global semaphore
try:
semaphore = ss.Semaphore(id, ss.IPC_CREAT)
except:
print('error while loading the semaphore')
def updateMyLOOKUPTABLE(myNewrow=None,alive_list=None):
'''
this function will do one of two things
1-it will insert a new table into the look up table
2-will updata the alive column when the data keepers teel it to do so ...
'''
global LOOKUP_TABLE,semaphore,sharedMemory
#first aquire the semaphore
semaphore.acquire()
#some stupid code to get the sharedMemory and convert it into data frame
mybytes=sharedMemory.read()
s=str(mybytes,'utf-8')
s=s[1:]
TESTDATA = StringIO(s)
LOOKUP_TABLE=pd.read_csv(TESTDATA,sep=',')
#end of stupid code
#insert new row into the LOOKUP_TABLE
if myNewrow is not None:
LOOKUP_TABLE = LOOKUP_TABLE.append(myNewrow,ignore_index=True)
csvfile=LOOKUP_TABLE.to_csv()
sharedMemory.write(str(csvfile))
#list of alive DATA keepers
if alive_list is not None:
for i,isalive in enumerate(alive_list):
LOOKUP_TABLE.loc[LOOKUP_TABLE['ID'] == i,'Alive'] = isalive
csvfile=LOOKUP_TABLE.to_csv()
sharedMemory.write(str(csvfile))
# last thing is to release the semaphores
semaphore.release()
#print(LOOKUP_TABLE)
return
def init():
global portMaster,sharedMemory,semaphore,LOOKUP_TABLE
#initiate the port master number
portMaster = str(sys.argv[1])
if(len(sys.argv)>1):
portMaster=str(sys.argv[1])
with open('master_tracker_config.json') as f:
masterInfo = json.load(f)
# get the LOOK_UP_TABLE from the shared memory
shared_memory_id=int(masterInfo['SHARED_MEMORY_ID'])
initMemory(shared_memory_id)
initSemaphore(shared_memory_id)
semaphore.release()
updateMyLOOKUPTABLE()
#print(LOOKUP_TABLE)
return
def readSendVideo(Videopath:str,socket:Socket):
messagevid={}
with open(Videopath,'rb') as vfile:
file=vfile.read()
messagevid['VIDEO']=file
socket.send_pyobj(messagevid)
return True
#this willl be in the download to require ports of the datakeepers ..
def randPortsAcquire(n_needed=1,x='D',filename='cat.mp4'):
global semaphore,sharedMemory,LOOKUP_TABLE
semaphore.acquire()
mybytes=sharedMemory.read()
s=str(mybytes,'utf-8')
s=s[1:]
TESTDATA = StringIO(s)
LOOKUP_TABLE = pd.read_csv(TESTDATA,sep=',')
acq_count = 0
acquired = []
typeOfOperation=x
for i in range (LOOKUP_TABLE.shape[0]):
if (int(LOOKUP_TABLE.iloc[i]['Alive'])==int(1)):
print('HI IAM ALIVE')
if(typeOfOperation=='D'):
fileList=json.loads(LOOKUP_TABLE.iloc[i]['Files'])
fileExist=False
for file in fileList:
if file == filename:
print('Here Iam my old frie')
fileExist=True
if(not fileExist):
continue
ports =json.loads(LOOKUP_TABLE.iloc[i][x+'Port'])
isfree =json.loads(LOOKUP_TABLE.iloc[i][x+'free'])
print('MY BEFORE')
print(isfree)
for port in range(len(isfree)):
if (acq_count >= n_needed):
break
if(int(isfree[port]) == int(1)):
print('iam stubid')
#acquire and set
isfree[port] = 0
print('HOOOOLAAA')
acquired.append([LOOKUP_TABLE.iloc[i]["IPv4"] ,ports[port]])
acq_count += 1
print(isfree)
LOOKUP_TABLE.loc[LOOKUP_TABLE['ID']==LOOKUP_TABLE.iloc[i]['ID'],x+'free'] = json.dumps(isfree)
csvfile=LOOKUP_TABLE.to_csv()
sharedMemory.write(csvfile)
semaphore.release()
print(acquired)
return acquired
def port_freeing(data):
global LOOKUP_TABLE,sharedMemory,semaphore
ipv4 = data['IPv4']
port = data['Port']
x = data['Type']
semaphore.acquire()
mybytes=sharedMemory.read()
s=str(mybytes,'utf-8')
s=s[1:]
TESTDATA = StringIO(s)
table = pd.read_csv(TESTDATA,sep=',')
isfree = json.loads((pd.DataFrame(table.loc[table['IPv4']==ipv4]))[x+'free'].iloc[0])
ports = json.loads((pd.DataFrame(table.loc[table['IPv4']==ipv4]))[x+'Port'].iloc[0])
for i in range(len(ports)):
if(ports[i] == port):
isfree[i] = 1
table.loc[table['IPv4']==ipv4,x+'free'] = json.dumps(isfree)
csvfile=table.to_csv()
sharedMemory.write(str(csvfile))
semaphore.release()
return
if __name__ == "__main__":
init()
masterContext = zmq.Context()
masterSocket = masterContext.socket(zmq.REP)
masterSocket.bind("tcp://*:%s" % portMaster)
print(portMaster)
while True:
messageClient = masterSocket.recv_pyobj()
print("Received request: ", messageClient)
if messageClient['REQ_TYPE']=='upload':
freePortsList=randPortsAcquire(x='U',filename='cat.mp4')
if len(freePortsList)==0:
print('sorry there isnt any avilable portd duo to traffic , try agaian after awhile')
sendMessege={'STATUS':'fail','PORT_NUMBER':None,'IP':None}
masterSocket.send_pyobj(sendMessege)
continue
sendMessege={'STATUS':'success','PORT_NUMBER':str(freePortsList[0][1]),'IP':str(str(freePortsList[0][0]))}
masterSocket.send_pyobj(sendMessege)
elif messageClient['REQ_TYPE']=='download':
print('Hello Sadness My Dear Old Friend')
#search for dk which has the this file(video)
fileName=messageClient['FILE_NAME']
freePortsList=randPortsAcquire(1,'D',filename=fileName)
print(freePortsList)
if len(freePortsList)==0:
print('sorry there isnt any avilable portd duo to traffic , try again after awhile')
continue
sendMessege={'DK_INFO':freePortsList}
masterSocket.send_pyobj(sendMessege)