X-Git-Url: https://git.novaco.in/?p=electrum-server.git;a=blobdiff_plain;f=processor.py;h=5b8ebf263f8217d051ed7f9157c3467f47a41c7b;hp=1fd7909365698c2de1d89326a8e7085f08dafe9f;hb=efc0e63020c5d4e6004064cd2f6dac021d4270fb;hpb=cb1ebe091b58cb616458c1afd1b97251d61eabed diff --git a/processor.py b/processor.py index 1fd7909..5b8ebf2 100644 --- a/processor.py +++ b/processor.py @@ -5,6 +5,14 @@ import time import traceback, sys import Queue as queue +def random_string(N): + import random, string + return ''.join(random.choice(string.ascii_uppercase + string.digits) for x in range(N)) + +def timestr(): + return time.strftime("[%d/%m/%Y-%H:%M:%S]") + + class Shared: def __init__(self): @@ -24,7 +32,52 @@ class Shared: class Processor(threading.Thread): def __init__(self): - self.shared = None + threading.Thread.__init__(self) + self.daemon = True + self.dispatcher = None + self.queue = queue.Queue() + + def process(self, request): + pass + + def push_response(self, response): + #print "response", response + self.dispatcher.request_dispatcher.push_response(response) + + def run(self): + while not self.shared.stopped(): + request = self.queue.get(10000000000) + try: + self.process(request) + except: + traceback.print_exc(file=sys.stdout) + + print "processor terminating" + + + +class Dispatcher: + + def __init__(self): + self.shared = Shared() + self.request_dispatcher = RequestDispatcher(self.shared) + self.request_dispatcher.start() + self.response_dispatcher = \ + ResponseDispatcher(self.shared, self.request_dispatcher) + self.response_dispatcher.start() + + def register(self, prefix, processor): + processor.dispatcher = self + processor.shared = self.shared + processor.start() + self.request_dispatcher.processors[prefix] = processor + + + +class RequestDispatcher(threading.Thread): + + def __init__(self, shared): + self.shared = shared threading.Thread.__init__(self) self.daemon = True self.request_queue = queue.Queue() @@ -47,6 +100,11 @@ class Processor(threading.Thread): def pop_request(self): return self.request_queue.get() + def get_session_by_address(self, address): + for x in self.sessions: + if x.address == address: + return x + def get_session_id(self, internal_id): with self.lock: return self.internal_ids.pop(internal_id) @@ -58,50 +116,50 @@ class Processor(threading.Thread): self.internal_id += 1 return r - def register(self, prefix, function): - self.processors[prefix] = function - def run(self): if self.shared is None: raise TypeError("self.shared not set in Processor") while not self.shared.stopped(): session, request = self.pop_request() - - method = request['method'] - params = request.get('params',[]) - - suffix = method.split('.')[-1] - if suffix == 'subscribe': - session.subscribe_to_service(method, params) - - # store session and id locally - request['id'] = self.store_session_id(session, request['id']) - - # dispatch request to the relevant module.. - prefix = method.split('.')[0] try: - func = self.processors[prefix] - except: - print "error: no processor for", prefix - continue - - try: - func(request,self.response_queue) + self.do_dispatch(session, request) except: traceback.print_exc(file=sys.stdout) - continue + self.stop() def stop(self): pass - def process(self, request): - print "New request", request - # Do stuff... - # response = request - # When ready, you call - # self.push_response(response) + def do_dispatch(self, session, request): + """ dispatch request to the relevant processor """ + + method = request['method'] + params = request.get('params',[]) + suffix = method.split('.')[-1] + if suffix == 'subscribe': + session.subscribe_to_service(method, params) + + # store session and id locally + request['id'] = self.store_session_id(session, request['id']) + + prefix = request['method'].split('.')[0] + try: + p = self.processors[prefix] + except: + print "error: no processor for", prefix + return + + p.queue.put(request) + + if method in ['server.version']: + session.version = params[0] + + def get_sessions(self): + with self.lock: + r = self.sessions[:] + return r def add_session(self, session): with self.lock: @@ -126,17 +184,56 @@ class Session: self._stopped = False self.lock = threading.Lock() self.subscriptions = [] + self.address = '' + self.name = '' + self.version = 'unknown' + self.time = time.time() + threading.Timer(2, self.info).start() + + # Debugging method. Doesn't need to be threadsafe. + def info(self): + for sub in self.subscriptions: + #print sub + method = sub[0] + if method == 'blockchain.address.subscribe': + addr = sub[1] + break + else: + addr = None + + if self.subscriptions: + print timestr(), self.name, self.address, addr,\ + len(self.subscriptions), self.version def stopped(self): with self.lock: return self._stopped def subscribe_to_service(self, method, params): + subdesc = self.build_subdesc(method, params) with self.lock: - self.subscriptions.append((method, params)) + if subdesc is not None: + self.subscriptions.append(subdesc) + + # subdesc = A subscription description + @staticmethod + def build_subdesc(method, params): + if method == "blockchain.numblocks.subscribe": + return method, + elif method == "blockchain.address.subscribe": + if not params: + return None + else: + return method, params[0] + else: + return None + + def contains_subscription(self, subdesc): + with self.lock: + return subdesc in self.subscriptions -class Dispatcher(threading.Thread): +class ResponseDispatcher(threading.Thread): def __init__(self, shared, processor): self.shared = shared @@ -146,24 +243,37 @@ class Dispatcher(threading.Thread): def run(self): while not self.shared.stopped(): - response = self.processor.pop_response() - #print "pop response", response - internal_id = response.get('id') - params = response.get('params',[]) - try: - method = response['method'] - except: - print "no method", response + self.update() + + def update(self): + response = self.processor.pop_response() + #print "pop response", response + internal_id = response.get('id') + method = response.get('method') + params = response.get('params') + + # A notification + if internal_id is None: # and method is not None and params is not None: + self.notification(method, params, response) + # A response + elif internal_id is not None: # and method is None and params is None: + self.send_response(internal_id, response) + else: + print "no method", response + + def notification(self, method, params, response): + subdesc = Session.build_subdesc(method, params) + for session in self.processor.sessions: + if session.stopped(): continue - - if internal_id: - session, message_id = self.processor.get_session_id(internal_id) - response['id'] = message_id + if session.contains_subscription(subdesc): session.send_response(response) - else: - for session in self.processor.sessions: - if not session.stopped(): - if (method,params) in session.subscriptions: - session.send_response(response) + def send_response(self, internal_id, response): + session, message_id = self.processor.get_session_id(internal_id) + if session: + response['id'] = message_id + session.send_response(response) + else: + print "send_response: no session", message_id, internal_id, response