def ServeRequest(request,masters,keylocation):
''' Process the request and return result '''
try:
req = json.loads(request)
requestid = req['id']
masterNode = req['Master']
userid = req['userid']
action = req['request']
data = req['data']
#call apis here
logger.debug('Processing {0} request from master {1},userid= {2},data={3}'.format(requestid,masterNode,userid,data))
api=MugenDBAPI()
if action == "put":
val = api.put(data,keylocation,userid)
elif action == "get":
val=api.get(data,keylocation,userid)
elif action == "update":
val=api.update(data,keylocation,userid)
elif action == "delete":
val=api.delete(data,keylocation,userid)
logger.debug('Processing {0} request from master {1},userid= {2},data={3},return={4}'.format(requestid,masterNode,userid,data,val))
sock = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)
host,port = masters[masterNode].partition(":")[::2]
print host,port,val
res = dict()
res['id'] = requestid
res['userid'] = userid
res['result'] = val
res['request'] = action
sock.sendto(json.dumps(res), (host,int(port)))
sock.close()
global num_of_requests
num_of_requests=num_of_requests-1
except:
print (traceback.format_exc())
def ServeRequest(request,masters,keylocation1,keylocation2):
''' Process the request and return result '''
try:
req = json.loads(request)
requestid = req['id']
masterNode = req['Master']
userid = req['userid']
action = req['request']
data = req['data']
#call apis here
logger.debug('Processing {0} request from master {1},userid= {2},data={3}'.format(requestid,masterNode,userid,data))
global db_files
api=MugenDBAPI(db_files[-2])
#the request will be for get only
val=api.get(data,keylocation1,userid)
if val == -1:
logger.debug('Searching for data in keymap2')
api=MugenDBAPI(db_files[-1])
val = api.get(data,keylocation2,userid)
logger.debug('Processing {0} request from master {1},userid= {2},data={3},return={4}'.format(requestid,masterNode,userid,data,val))
sock = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)
host,port = masters[masterNode].partition(":")[::2]
print host,port,val
res = dict()
res['id'] = requestid
res['userid'] = userid
res['result'] = val
res['request'] = action
sock.sendto(json.dumps(res), (host,int(port)))
sock.close()
global num_of_requests
num_of_requests=num_of_requests-1
except:
print (traceback.format_exc())
def split_keys(self,keylocation):
keys_1= {}
keys_2= {}
api=MugenDBAPI('temp_dbfile','temp_keyfile')
for_new = MugenDBAPI('MugenDBfile_{}.txt'.format(self.newnode[0]),'KeyMap_{}.txt'.format(self.newnode[0]))
servers = [self.slavenum+":10000",self.newnode[1]+":10000"]
ring = HashRing(servers)
for key in keylocation:
with open("MugenDBfile.txt",'r') as myfile:
myfile.seek(keylocation[key][1],0)
data = json.loads(myfile.readline())
hxmd5=calculatemd5(key)
server=ring.get_node(hxmd5)
if server == servers[1]:
for_new.put(key,data,keys_2,keylocation[key][0])
else:
api.put(key,data,keys_1,keylocation[key][0])
os.system('mv temp_dbfile.txt MugenDBfile.txt ')
os.system('mv temp_keyfile.txt KeyMap.txt ')
