1 from __future__ import division
8 from twisted.internet import defer
11 from p2pool.bitcoin import data as bitcoin_data, getwork
12 from p2pool.util import expiring_dict, jsonrpc, pack, variable
14 class _Provider(object):
15 def __init__(self, parent, long_poll):
17 self.long_poll = long_poll
19 def rpc_getwork(self, request, data=None):
20 return self.parent._getwork(request, data, long_poll=self.long_poll)
22 class _GETableServer(jsonrpc.HTTPServer):
23 def __init__(self, provider, render_get_func):
24 jsonrpc.HTTPServer.__init__(self, provider)
25 self.render_GET = render_get_func
27 class WorkerBridge(object):
29 self.new_work_event = variable.Event()
31 def preprocess_request(self, request):
32 return request, # *args to self.compute
34 def get_work(self, request):
35 raise NotImplementedError()
37 class WorkerInterface(object):
38 def __init__(self, worker_bridge):
39 self.worker_bridge = worker_bridge
41 self.worker_views = {}
43 self.merkle_root_to_handler = expiring_dict.ExpiringDict(300)
45 def attach_to(self, res, get_handler=None):
46 res.putChild('', _GETableServer(_Provider(self, long_poll=False), get_handler))
49 request.content = StringIO.StringIO(json.dumps(dict(id=0, method='getwork')))
50 return s.render_POST(request)
51 s = _GETableServer(_Provider(self, long_poll=True), repost)
52 res.putChild('long-polling', s)
54 @defer.inlineCallbacks
55 def _getwork(self, request, data, long_poll):
56 request.setHeader('X-Long-Polling', '/long-polling')
57 request.setHeader('X-Roll-NTime', 'expire=100')
58 request.setHeader('X-Is-P2Pool', 'true')
59 if request.getHeader('Host') is not None:
60 request.setHeader('X-Stratum', 'stratum+tcp://' + request.getHeader('Host'))
63 header = getwork.decode_data(data)
64 if header['merkle_root'] not in self.merkle_root_to_handler:
65 print >>sys.stderr, '''Couldn't link returned work's merkle root with its handler. This should only happen if this process was recently restarted!'''
66 defer.returnValue(False)
67 defer.returnValue(self.merkle_root_to_handler[header['merkle_root']](header, request.getUser() if request.getUser() is not None else '', '\0'*self.worker_bridge.COINBASE_NONCE_LENGTH))
70 id = random.randrange(1000, 10000)
71 print 'POLL %i START is_long_poll=%r user_agent=%r user=%r' % (id, long_poll, request.getHeader('User-Agent'), request.getUser())
74 request_id = request.getClientIP(), request.getHeader('Authorization')
75 if self.worker_views.get(request_id, self.worker_bridge.new_work_event.times) != self.worker_bridge.new_work_event.times:
77 print 'POLL %i PUSH' % (id,)
80 print 'POLL %i WAITING' % (id,)
81 yield self.worker_bridge.new_work_event.get_deferred()
82 self.worker_views[request_id] = self.worker_bridge.new_work_event.times
84 x, handler = self.worker_bridge.get_work(*self.worker_bridge.preprocess_request(request.getUser() if request.getUser() is not None else ''))
85 res = getwork.BlockAttempt(
87 previous_block=x['previous_block'],
88 merkle_root=bitcoin_data.check_merkle_link(bitcoin_data.hash256(x['coinb1'] + '\0'*self.worker_bridge.COINBASE_NONCE_LENGTH + x['coinb2']), x['merkle_link']),
89 timestamp=x['timestamp'],
91 share_target=x['share_target'],
93 assert res.merkle_root not in self.merkle_root_to_handler
95 self.merkle_root_to_handler[res.merkle_root] = handler
98 print 'POLL %i END identifier=%i' % (id, self.worker_bridge.new_work_event.times)
100 defer.returnValue(res.getwork(identifier=str(self.worker_bridge.new_work_event.times), submitold=True))