86 lines
2.6 KiB
Python
86 lines
2.6 KiB
Python
import logging
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from twisted.python import failure
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from twisted.internet import error
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from twisted.internet.protocol import Protocol, ServerFactory
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import json
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log = logging.getLogger(__name__)
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class IncompleteMessageError(Exception):
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pass
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class ReflectorServer(Protocol):
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"""
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"""
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def connectionMade(self):
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peer_info = self.transport.getPeer()
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self.peer = self.factory.peer_manager.get_peer(peer_info.host, peer_info.port)
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self.received_handshake = False
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self.peer_version = None
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self.receiving_blob = False
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self.blob_write = None
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self.blob_finished_d = None
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self.request_buff = ""
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def connectionLost(self, reason=failure.Failure(error.ConnectionDone())):
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pass
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def dataReceived(self, data):
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if self.receiving_blob is False:
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self.request_buff += data
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try:
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msg = self.parse_request(self.request_buff)
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except IncompleteMessageError:
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pass
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else:
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self.request_buff = ''
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d = self.handle_request(msg)
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d.addCallbacks(self.send_response, self.handle_error)
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else:
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self.blob_write(data)
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def parse_request(self, buff):
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try:
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return json.loads(buff)
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except ValueError:
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raise IncompleteMessageError()
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def handle_request(self, request_dict):
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if self.received_handshake is False:
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return self.handle_handshake(request_dict)
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else:
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return self.handle_normal_request(request_dict)
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def handle_handshake(self, request_dict):
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pass
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def handle_normal_request(self, request_dict):
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if self.blob_write is None:
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# we haven't opened a blob yet, meaning we must be waiting for the
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# next message containing a blob hash and a length. this message
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# should be it. if it's one we want, open the blob for writing, and
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# return a nice response dict (in a Deferred) saying go ahead
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pass
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else:
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# we have a blob open already, so this message should have nothing
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# important in it. to the deferred that fires when the blob is done,
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# add a callback which returns a nice response dict saying to keep
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# sending, and then return that deferred
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pass
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def send_response(self, response_dict):
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pass
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def handle_error(self, err):
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pass
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class ReflectorServerFactory(ServerFactory):
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protocol = ReflectorServer
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def __init__(self, peer_manager):
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self.peer_manager = peer_manager |