7 class Processor(threading.Thread):
11 self.lock = threading.Lock()
13 threading.Thread.__init__(self)
15 self.request_queue = queue.Queue()
16 self.response_queue = queue.Queue()
18 def add_session(self, session):
20 self.sessions.append(session)
22 def push_response(self, session, item):
23 self.response_queue.put((session,item))
25 def pop_response(self):
26 return self.response_queue.get()
28 def push_request(self, session, item):
29 self.request_queue.put((session,item))
31 def pop_request(self):
32 return self.request_queue.get()
35 if self.shared is None:
36 raise TypeError("self.shared not set in Processor")
37 while not self.shared.stopped():
38 # Deep copy entire sessions list and blank it
39 # This is done to minimise lock contention
41 sessions = self.sessions[:]
43 for session in sessions:
44 if not session.stopped():
45 # If session is still alive then re-add it back
46 # to our internal register
47 self.add_session(session)
49 session, request = self.pop_request()
50 self.process(session, request)
57 def process(self, session, request):
58 print "New request", request
61 # When ready, you call
62 # self.push_response(session,response)
64 def update_from_blocknum(self,block_number):
65 for session in self.sessions:
66 if session.numblocks_sub is not None:
67 response = { 'id':session.numblocks_sub, 'result':block_number }
68 self.push_response(session,response)
70 def update_from_address(self,addr):
71 for session in self.sessions:
72 m = session.addresses_sub.get(addr)
74 status = self.get_status( addr )
75 message_id, last_status = m
76 if status != last_status:
77 session.subscribe_to_address(addr,message_id, status)
78 response = { 'id':message_id, 'result':status }
79 self.push_response(session,response)
81 def get_status(self,addr):
82 # return status of an address
83 # return store.get_status(addr)
89 def __init__(self, connection, address):
90 self._connection = connection
91 self.address = address
93 self.lock = threading.Lock()
94 self.numblocks_sub = None
95 self.addresses_sub = {}
96 print "new session", address
99 self._connection.close()
100 print "Terminating connection:", self.address[0]
108 def connection(self):
110 raise Exception("Session was stopped")
112 return self._connection
114 def subscribe_to_numblocks(self,message_id):
116 self.numblocks_sub = message_id
118 def subscribe_to_address(self,address,message_id,status):
120 self.addresses_sub[address] = message_id,status
123 class TcpResponder(threading.Thread):
125 def __init__(self, shared, processor):
127 self.processor = processor
128 threading.Thread.__init__(self)
131 while not self.shared.stopped():
132 session,response = self.processor.pop_response()
133 raw_response = json.dumps(response)
134 # Possible race condition here by having session
136 # I assume Python connections are thread safe interfaces
138 connection = session.connection()
139 connection.send(raw_response + "\n")
143 class TcpClientRequestor(threading.Thread):
145 def __init__(self, shared, processor, session):
147 self.processor = processor
149 self.session = session
150 threading.Thread.__init__(self)
153 while not self.shared.stopped():
154 if not self.update():
161 data = self.receive()
172 return self.session.connection().recv(1024)
177 raw_buffer = self.message.find('\n')
181 raw_command = self.message[0:raw_buffer].strip()
182 self.message = self.message[raw_buffer + 1:]
183 if raw_command == 'quit':
188 command = json.loads(raw_command)
190 self.processor.push_response(self.session,
191 {"error": "bad JSON", "request": raw_command})
195 # Try to load vital fields, and return an error if
197 message_id = command['id']
198 method = command['method']
200 # Return an error JSON in response.
201 self.processor.push_response(self.session,
202 {"error": "syntax error", "request": raw_command})
204 self.processor.push_request(self.session,command)
208 class TcpServer(threading.Thread):
210 def __init__(self, shared, processor, host, port):
212 self.processor = processor
214 threading.Thread.__init__(self)
220 print "TCP server started."
221 sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
222 sock.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEADDR, 1)
223 sock.bind((self.host, self.port))
225 responder = TcpResponder(self.shared, self.processor)
227 while not self.shared.stopped():
228 session = Session(*sock.accept())
229 client_req = TcpClientRequestor(self.shared, self.processor, session)
231 self.processor.add_session(session)
236 self.lock = threading.Lock()
237 self._stopped = False
240 print "Stopping Stratum"
250 def start(self, processor):
252 # Bind shared to processor since constructor is user defined
253 processor.shared = shared
255 # Create various transports we need
256 transports = TcpServer(shared, processor, "176.31.24.241", 50001),
257 for server in transports:
259 while not shared.stopped():
260 if raw_input() == "quit":
264 if __name__ == "__main__":
265 processor = Processor()