def dispatch(self, request, *args, **kwargs):
with Session() as s:
addr = kwargs['node'].replace('+', '/')
if addr.startswith(':') or addr.startswith('/'):
addr = request.META['REMOTE_ADDR'] + addr
response = HttpResponse()
thisNode = Node.getThisNode(s, addr).first()
otherNode = Node.getOtherNode(s, addr).first()
linkedNodeCount = Node.getLinkedNode(s).count()
welcome = False
if thisNode:
welcome = True
thisNode.linked = True
thisNode.updateTimestamp()
s.commit()
elif linkedNodeCount < settings.MAX_NODES:
welcome = True
s.add(Node(host=addr, linked=True))
s.commit()
if welcome:
response.write('WELCOME')
if otherNode:
response.write('\n'+str(otherNode.host))
return response
def _joinNetwork_doByeByeWorker(host):
try:
httpGet('http://' + host + '/bye/' + settings.NODE_NAME)
with Session() as s:
node = Node.getThisNode(s, host).first()
if node:
node.linked = False
s.commit()
except URLError:
pass
def _joinNetwork_findNodeWorker(host):
try:
newHost = httpGet('http://' + host + '/node').strip()
with Session() as s:
if Node.getThisNode(s, newHost).first():
return
Node.add(s, newHost)
s.commit()
except URLError:
pass
def _doPing_worker(host):
try:
response = httpGet('http://' + host + '/ping').splitlines()
with Session() as s:
node = Node.getThisNode(s, host).first()
if response[0].strip() != 'PONG':
node.linked = False
else:
node.updateTimestamp()
if len(response) > 1:
newNodeHost = response[1].strip()
newNode = Node.getThisNode(s, newNodeHost).first()
if not newNode:
Node.add(s, newNodeHost)
s.commit()
except URLError:
pass
def dispatch(self, request, *args, **kwargs):
with Session() as s:
addr = kwargs['node'].replace('+', '/')
if addr.startswith(':') or addr.startswith('/'):
addr = request.META['REMOTE_ADDR'] + addr
response = HttpResponse()
thisNode = Node.getThisNode(s, addr).first()
if thisNode:
thisNode.linked = False
s.commit()
response.write('BYEBYE')
return response
def _joinNetwork_joinWorker(host):
try:
response = httpGet('http://' + host + '/join/' + settings.NODE_NAME).splitlines()
if response[0] != 'WELCOME':
return
with Session() as s:
node = Node.getThisNode(s, host).first()
if node:
node.linked = True
else:
Node.add(s, host)
s.commit()
if len(response) == 2:
newHost = response[1]
with Session() as s:
if Node.getThisNode(s, newHost).first():
return
Node.add(s, newHost)
s.commit()
except URLError:
pass
