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recovery_server.py
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recovery_server.py
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from concurrent import futures
import threading
import grpc
import recovery_pb2
import recovery_pb2_grpc
import time
from collections import OrderedDict
import sys
_ONE_DAY_IN_SECONDS = 60 * 60 * 24
hole_dictionary = OrderedDict()
hole_stack = []
global whole_mesh_dictionary
whole_mesh_dictionary = {}
port = "8888"
def findEdgeNode2(meshMap):
"""
edge_ips = findEdgeNode2(whole_mesh_dictionary)
if len(edge_ips) :
edge_ip = edge_ips[0]
"""
edge_coords_ips = []
top_left = (sys.maxsize,sys.maxsize)
top_right = (-sys.maxsize,sys.maxsize)
bottom_left = (sys.maxsize,-sys.maxsize)
bottom_right = (-sys.maxsize,-sys.maxsize)
for x,y in meshMap:
if x <= top_left[0] and y <= top_left[1]:
top_left[0] = x
top_left[1] = y
if x >= top_right[0] and y <= top_right[1]:
top_right[0] = x
top_right[1] = y
if x <= bottom_left[0] and y >= bottom_left[1]:
bottom_left[0] = x
bottom_left[1] = y
if x >= bottom_right[0] and y >= bottom_right[1]:
bottom_right[0] = x
bottom_right[1] = y
if abs(top_left[0]) != sys.maxsize and (top_left[0] != 0 and top_left[1] != 0):
if top_left in meshMap:
edge_coords_ips.append(top_left)
if abs(top_right[0]) != sys.maxsize:
if top_right in meshMap and top_left!=top_right:
edge_coords_ips.append(top_right)
if abs(bottom_left[0]) != sys.maxsize:
if bottom_left in meshMap and top_left!=bottom_left and top_right!=bottom_left:
edge_coords_ips.append(bottom_left)
if abs(bottom_right[0]) != sys.maxsize:
if bottom_right in meshMap and top_left!=bottom_right and top_right!=bottom_right and bottom_left!=bottom_right:
edge_coords_ips.append(bottom_right)
return edge_coords_ips
def findEdgeNode(meshMap):
# print("meshMap",meshMap)
xlist = set()
ylist = set()
for coordinate in meshMap:
coordinateTuple = coordinate
xlist.add(coordinateTuple[0])
ylist.add(coordinateTuple[1])
try :
minx = min(xlist)
miny = min(ylist)
maxx = max(xlist)
maxy = max(ylist)
if 0 != minx or 0 != miny:
curr = (minx,maxy)
if curr in meshMap:
return meshMap[curr]
if 0 != minx or 0 != maxy:
curr = (minx,maxy)
if curr in meshMap:
return meshMap[curr]
if 0 != maxx or 0 != miny:
curr = (minx,maxy)
if curr in meshMap:
return meshMap[curr]
if 0 != maxx or 0 != maxy:
curr = (minx,maxy)
if curr in meshMap:
return meshMap[curr]
except:
return ""
return ""
def getMesh():
global whole_mesh_dictionary
while True:
# we have to change this to any random ip from the list
try:
ip = "10.0.0.9"
recovery_channel = grpc.insecure_channel(ip + ":" + str(port))
recovery_stub = recovery_pb2_grpc.RecoveryStub(recovery_channel)
response = recovery_stub.sendWholeMesh(recovery_pb2.SendWholeMeshRequest())
whole_mesh_dictionary = eval(response.wholemesh)
# print("whole_mesh_dictionary",eval(response.wholemesh))
recovery_channel.close()
except:
continue
time.sleep(5)
def startRecoveryThread():
print("Inside recovery thread",hole_dictionary)
global whole_mesh_dictionary
while True:
# print("Recovery",hole_dictionary)
if len(hole_dictionary) >=1:
edge_ip = findEdgeNode(whole_mesh_dictionary)
if edge_ip:
keys_hole_dictionary = list(d.hole_dictionary())
pos,neighbors = keys_hole_dictionary[-1]
hole_dictionary.pop(pos)
recovery_channel = grpc.insecure_channel(edge_ip + ":" + str(port))
recovery_stub = recovery_pb2_grpc.RecoveryStub(recovery_channel)
response = recovery_stub.startRecovery(recovery_pb2.StartRecoveryRequest(pos=str(pos),neighbors=str(neighbors)))
time.sleep(5)
class RecoveryServer(recovery_pb2_grpc.RecoveryServicer):
def __init__(self):
print('Recovery server initialization')
def sendAdditionOfNodeMessage(self,request,context):
print("Inside sendAdditionOfNodeMessage")
pos = eval(request.pos)
ip = eval(request.ip)
whole_mesh_dictionary[pos] = ip
return recovery_pb2.AdditionalOfNodeReply()
def sendHoleInfo(self, request, context):
print("inside hole info method")
pos = eval(request.pos)
neighbors = eval(request.neighbors)
if pos not in hole_dictionary:
hole_dictionary[pos] = neighbors
print(hole_dictionary)
return recovery_pb2.SendHoleInfoReply()
if __name__ == '__main__':
server = grpc.server(futures.ThreadPoolExecutor(max_workers=10))
recovery_pb2_grpc.add_RecoveryServicer_to_server(RecoveryServer(), server)
server.add_insecure_port('[::]:8888')
server.start()
print("Server starting...")
hole_detection_thread = threading.Thread(target=getMesh)
hole_detection_thread.start()
start_recovery_thread = threading.Thread(target=startRecoveryThread)
start_recovery_thread.start()
server.wait_for_termination()