change abe backend to print_log
[electrum-server.git] / processor.py
index d012f5d..314f4c5 100644 (file)
@@ -13,14 +13,24 @@ def timestr():
     return time.strftime("[%d/%m/%Y-%H:%M:%S]")
 
 
+print_lock = threading.Lock()
+def print_log(*args):
+    args = [str(item) for item in args]
+    with print_lock:
+        sys.stderr.write(timestr() + " " + " ".join(args) + "\n")
+        sys.stderr.flush()
+
+
+
 class Shared:
 
-    def __init__(self):
+    def __init__(self, config):
         self.lock = threading.Lock()
         self._stopped = False
+        self.config = config
 
     def stop(self):
-        print "Stopping Stratum"
+        print_log( "Stopping Stratum" )
         with self.lock:
             self._stopped = True
 
@@ -35,20 +45,34 @@ class Processor(threading.Thread):
         threading.Thread.__init__(self)
         self.daemon = True
         self.dispatcher = None
+        self.queue = queue.Queue()
 
     def process(self, request):
         pass
 
+    def add_request(self, request):
+        self.queue.put(request)
+
     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_log( "processor terminating")
+            
 
 
 class Dispatcher:
 
-    def __init__(self):
-        self.shared = Shared()
+    def __init__(self, config):
+        self.shared = Shared(config)
         self.request_dispatcher = RequestDispatcher(self.shared)
         self.request_dispatcher.start()
         self.response_dispatcher = \
@@ -89,6 +113,11 @@ class RequestDispatcher(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)
@@ -105,39 +134,56 @@ class RequestDispatcher(threading.Thread):
             raise TypeError("self.shared not set in Processor")
         while not self.shared.stopped():
             session, request = self.pop_request()
-            self.process(session, request)
+            try:
+                self.do_dispatch(session, request)
+            except:
+                traceback.print_exc(file=sys.stdout)
+                
 
         self.stop()
 
     def stop(self):
         pass
 
-    def process(self, session, request):
+    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)
+
+        if session is not None:
+            is_new = session.protocol_version >= 0.5
+            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 = request['method'].split('.')[0]
         try:
             p = self.processors[prefix]
         except:
-            print "error: no processor for", prefix
+            print_log( "error: no processor for", prefix)
             return
-        try:
-            p.process(request)
-        except:
-            traceback.print_exc(file=sys.stdout)
+
+        p.add_request(request)
 
         if method in ['server.version']:
             session.version = params[0]
+            try:
+                session.protocol_version = float(params[1])
+            except:
+                pass
 
+            #if session.protocol_version < 0.6:
+            #    print_log("stopping session from old client", session.protocol_version)
+            #    session.stop()
+
+    def get_sessions(self):
+        with self.lock:
+            r = self.sessions[:]
+        return r
 
     def add_session(self, session):
         with self.lock:
@@ -164,6 +210,9 @@ class Session:
         self.subscriptions = []
         self.address = ''
         self.name = ''
+        self.version = 'unknown'
+        self.protocol_version = 0.
+        self.time = time.time()
         threading.Timer(2, self.info).start()
 
     # Debugging method. Doesn't need to be threadsafe.
@@ -176,8 +225,9 @@ class Session:
                 break
         else:
             addr = None
-        print timestr(), self.name, self.address, addr,\
-            len(self.subscriptions), self.version
+
+        if self.subscriptions:
+            print_log( "%4s"%self.name, "%15s"%self.address, "%35s"%addr, "%3d"%len(self.subscriptions), self.version )
 
     def stopped(self):
         with self.lock:
@@ -194,7 +244,9 @@ class Session:
     def build_subdesc(method, params):
         if method == "blockchain.numblocks.subscribe":
             return method,
-        elif method == "blockchain.address.subscribe":
+        elif method == "blockchain.headers.subscribe":
+            return method,
+        elif method in ["blockchain.address.subscribe"]:
             if not params:
                 return None
             else:
@@ -209,9 +261,9 @@ class Session:
 
 class ResponseDispatcher(threading.Thread):
 
-    def __init__(self, shared, processor):
+    def __init__(self, shared, request_dispatcher):
         self.shared = shared
-        self.processor = processor
+        self.request_dispatcher = request_dispatcher
         threading.Thread.__init__(self)
         self.daemon = True
 
@@ -220,7 +272,7 @@ class ResponseDispatcher(threading.Thread):
             self.update()
 
     def update(self):
-        response = self.processor.pop_response()
+        response = self.request_dispatcher.pop_response()
         #print "pop response", response
         internal_id = response.get('id')
         method = response.get('method')
@@ -228,23 +280,34 @@ class ResponseDispatcher(threading.Thread):
 
         # A notification
         if internal_id is None: # and method is not None and params is not None:
-            self.notification(method, params, response)
+            found = self.notification(method, params, response)
+            if not found and method == 'blockchain.address.subscribe':
+                params2 = [self.shared.config.get('server','password')] + params
+                self.request_dispatcher.push_request(None,{'method':method.replace('.subscribe', '.unsubscribe'), 'params':params2, 'id':None})
+
         # A response
-        elif internal_id is not None: # and method is None and params is None:
+        elif internal_id is not None: 
             self.send_response(internal_id, response)
         else:
-            print "no method", response
+            print_log( "no method", response)
 
     def notification(self, method, params, response):
         subdesc = Session.build_subdesc(method, params)
-        for session in self.processor.sessions:
+        found = False
+        for session in self.request_dispatcher.sessions:
             if session.stopped():
                 continue
             if session.contains_subscription(subdesc):
                 session.send_response(response)
+                found = True
+        # if not found: print_log( "no subscriber for", subdesc)
+        return found
 
     def send_response(self, internal_id, response):
-        session, message_id = self.processor.get_session_id(internal_id)
-        response['id'] = message_id
-        session.send_response(response)
+        session, message_id = self.request_dispatcher.get_session_id(internal_id)
+        if session:
+            response['id'] = message_id
+            session.send_response(response)
+        #else:
+        #    print_log( "send_response: no session", message_id, internal_id, response )