def __init__(self,
addr=args.addr,
port=args.port,
givenbootstraplist=args.bootstrap,
debugoption=args.debug,
objectname=args.objectname,
logger=args.logger,
writetodisk=args.writetodisk):
self.addr = addr if addr else findOwnIP()
self.port = port
self.debug = debugoption
self.durable = writetodisk
self.isnameserver = args.domain != ''
self.domain = args.domain
self.useroute53 = args.route53
if objectname == '':
parser.print_help()
self._graceexit(1)
self.objectname = objectname
# initialize receive queue
self.receivedmessages_semaphore = Semaphore(0)
self.receivedmessages = []
# lock to synchronize message handling
self.lock = Lock()
# create server socket and bind to a port
self.socket = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
self.socket.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEADDR, 1)
self.socket.setsockopt(socket.IPPROTO_TCP, socket.TCP_NODELAY, 1)
self.socket.setblocking(0)
if self.port:
try:
self.socket.bind((self.addr, self.port))
except socket.error as e:
print "Cannot bind to port %d" % self.port
print "Socket Error: ", e
self._graceexit(1)
else:
for i in range(50):
self.port = random.randint(14000, 15000)
try:
self.socket.bind((self.addr, self.port))
break
except socket.error as e:
print "Socket Error: ", e
self.socket.listen(10)
self.connectionpool = ConnectionPool()
try:
self.connectionpool.epoll = select.epoll()
except AttributeError as e:
# the os doesn't support epoll
self.connectionpool.epoll = None
# set the logger
if logger:
LOGGERNODE = logger
else:
LOGGERNODE = None
# Initialize replicas
# Keeps {peer:outofreachcount}
self.replicas = {}
# Nameserver state
if self.isnameserver:
self.type = NODE_NAMESERVER
try:
self.nameserver = Nameserver(self.addr, self.domain,
self.useroute53, self.replicas,
self.debug)
except Exception as e:
print "Error:", e
print "Could not start Replica as a Nameserver, exiting."
self._graceexit(1)
else:
self.type = NODE_REPLICA
self.alive = True
self.me = Peer(self.addr, self.port, self.type)
# set id
self.id = '%s:%d' % (self.addr, self.port)
# add self to connectionpool
self.connectionpool.add_connection_to_self(
self.me,
SelfConnection(self.receivedmessages,
self.receivedmessages_semaphore))
self.logger = Logger("%s-%s" % (node_names[self.type], self.id),
lognode=LOGGERNODE)
if self.isnameserver:
self.nameserver.add_logger(self.logger)
print "%s-%s connected." % (node_names[self.type], self.id)
# Keeps the liveness of the nodes
self.nodeliveness = {}
self.bootstrapset = set()
# connect to the bootstrap node
if givenbootstraplist:
self.discoverbootstrap(givenbootstraplist)
self.connecttobootstrap()
self.stateuptodate = False
def __init__(self,
nodetype,
addr=args.addr,
port=args.port,
givenbootstraplist=args.bootstrap,
debugoption=args.debug,
objectname=args.objectname,
instantiateobj=False,
configpath=args.configpath,
logger=args.logger,
writetodisk=args.writetodisk):
self.addr = addr if addr else findOwnIP()
self.port = port
self.type = nodetype
self.debug = debugoption
self.durable = writetodisk
if instantiateobj:
if objectname == '':
parser.print_help()
self._graceexit(1)
self.objectname = objectname
# initialize receive queue
self.receivedmessages_semaphore = Semaphore(0)
self.receivedmessages = []
# lock to synchronize message handling
self.lock = Lock()
# create server socket and bind to a port
self.socket = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
self.socket.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEADDR, 1)
self.socket.setsockopt(socket.IPPROTO_TCP, socket.TCP_NODELAY, 1)
self.socket.setblocking(0)
if self.port:
try:
self.socket.bind((self.addr, self.port))
except socket.error as e:
print "Cannot bind to port %d" % self.port
print "Socket Error: ", e
self._graceexit(1)
else:
for i in range(50):
self.port = random.randint(14000, 15000)
try:
self.socket.bind((self.addr, self.port))
break
except socket.error as e:
print "Socket Error: ", e
pass
self.socket.listen(10)
self.connectionpool = ConnectionPool()
try:
self.connectionpool.epoll = select.epoll()
except AttributeError as e:
# the os doesn't support epoll
self.connectionpool.epoll = None
self.alive = True
self.me = Peer(self.addr, self.port, self.type)
# set id
self.id = '%s:%d' % (self.addr, self.port)
# set path for additional configuration data
self.configpath = configpath
# set the logger
try:
LOGGERNODE = load_configdict(self.configpath)['LOGGERNODE']
except KeyError as e:
if logger:
LOGGERNODE = logger
else:
LOGGERNODE = None
self.logger = Logger("%s-%s" % (node_names[self.type], self.id),
lognode=LOGGERNODE)
print "%s-%s connected." % (node_names[self.type], self.id)
# Initialize groups
# Keeps {peer:outofreachcount}
self.replicas = {}
self.acceptors = {}
self.nameservers = {}
self.groups = {
NODE_REPLICA: self.replicas,
NODE_ACCEPTOR: self.acceptors,
NODE_NAMESERVER: self.nameservers
}
self.groups[self.me.type][self.me] = 0
# Keeps the liveness of the nodes
self.nodeliveness = {}
# connect to the bootstrap node
if givenbootstraplist:
self.bootstraplist = []
self.discoverbootstrap(givenbootstraplist)
self.connecttobootstrap()
if self.type == NODE_REPLICA or self.type == NODE_NAMESERVER:
self.stateuptodate = False