use named callbacks with the interface

electrum

@@ -185,8 +185,10 @@ if __name__ == '__main__':
             sys.exit("Error: Unknown GUI: " + pref_gui )
 
         gui = gui.ElectrumGui(wallet, config)
-        wallet.interface = Interface(config, True, gui.server_list_changed)
-        wallet.interface.start()
+        interface = Interface(config, True)
+        interface.register_callback('peers', gui.server_list_changed)
+        interface.start()
+        wallet.interface = interface
 
         WalletSynchronizer(wallet, config).start()
         WalletVerifier(wallet, config).start()
@@ -293,8 +295,10 @@ if __name__ == '__main__':
 
     # open session
     if cmd not in offline_commands and not options.offline:
-        wallet.interface = Interface(config)
-        wallet.interface.start()
+        interface = Interface(config)
+        interface.register_callback('connected', lambda: print_error("Connected to " + interface.connection_msg))
+        interface.start()
+        wallet.interface = interface
         WalletSynchronizer(wallet, config).start()
         wallet.update()
         wallet.save()

lib/gui_lite.py

@@ -800,7 +800,7 @@ class MiniDriver(QObject):
         self.wallet = wallet
         self.window = window
 
-        self.wallet.interface.register_callback(self.update_callback)
+        self.wallet.interface.register_callback('updated',self.update_callback)
 
         self.state = None
 

lib/gui_qt.py

@@ -207,7 +207,7 @@ class ElectrumWindow(QMainWindow):
         QMainWindow.__init__(self)
         self.wallet = wallet
         self.config = config
-        self.wallet.interface.register_callback(self.update_callback)
+        self.wallet.interface.register_callback('updated', self.update_callback)
 
         self.detailed_view = config.get('qt_detailed_view', False)
 

lib/interface.py

@@ -47,14 +47,16 @@ def pick_random_server():
 
 class Interface(threading.Thread):
 
-    def register_callback(self, update_callback):
+    def register_callback(self, event, callback):
         with self.lock:
-            self.update_callbacks.append(update_callback)
+            self.callbacks[event] = callback
 
-    def trigger_callbacks(self):
+    def trigger_callback(self, event):
         with self.lock:
-            callbacks = self.update_callbacks[:]
-        [update() for update in callbacks]
+            callback = self.callbacks.get(event)
+        if callback:
+            callback()
+            
 
 
     def init_server(self, host, port, proxy=None, use_ssl=True):
@@ -112,6 +114,7 @@ class Interface(threading.Thread):
                 result = params[1]
                 params = [addr]
 
+                
         response_queue = self.responses[channel]
         response_queue.put({'method':method, 'params':params, 'result':result, 'id':msg_id})
 
@@ -299,7 +302,7 @@ class Interface(threading.Thread):
 
 
 
-    def __init__(self, config=None, loop=False, servers_loaded_callback=None):
+    def __init__(self, config=None, loop=False):
 
         if config is None:
             from simple_config import SimpleConfig
@@ -309,13 +312,12 @@ class Interface(threading.Thread):
         self.daemon = True
         self.loop = loop
         self.config = config
-        self.servers_loaded_callback = servers_loaded_callback
 
         self.subscriptions = {}
         self.responses = {}
         self.responses['default'] = Queue.Queue()
 
-        self.update_callbacks = []
+        self.callbacks = {}
         self.lock = threading.Lock()
         self.init_interface()
 
@@ -338,11 +340,11 @@ class Interface(threading.Thread):
                 raise BaseException('no server available')
 
         if self.is_connected:
-            print "Connected to " + self.connection_msg
             self.send([('server.version', [ELECTRUM_VERSION])])
-            #self.send([('server.banner',[])], 'synchronizer')
+            self.trigger_callback('connected')
         else:
-            print_error("Failed to connect " + self.connection_msg)
+            self.trigger_callback('notconnected')
+            #print_error("Failed to connect " + self.connection_msg)
 
 
     def init_with_server(self, config):
@@ -471,7 +473,7 @@ class Interface(threading.Thread):
     def run(self):
         while True:
             self.run_tcp() if self.protocol in 'st' else self.run_http()
-            self.trigger_callbacks()
+            self.trigger_callback('disconnected')
             if not self.loop: break
 
             time.sleep(5)

lib/wallet.py

@@ -845,7 +845,7 @@ class WalletSynchronizer(threading.Thread):
                 self.wallet.was_updated = True
 
         if self.wallet.was_updated:
-            self.interface.trigger_callbacks()
+            self.interface.trigger_callback('updated')
             self.wallet.was_updated = False
 
 
@@ -859,7 +859,9 @@ class WalletSynchronizer(threading.Thread):
     def run(self):
 
         # subscriptions
-        self.interface.send([('blockchain.numblocks.subscribe',[]), ('server.peers.subscribe',[])], 'synchronizer')
+        self.interface.send([('server.banner',[])],'synchronizer')
+        self.interface.send([('blockchain.numblocks.subscribe',[])], 'synchronizer')
+        self.interface.send([('server.peers.subscribe',[])],'synchronizer')
         self.subscribe_to_addresses(self.wallet.all_addresses())
 
         while True:
@@ -893,9 +895,8 @@ class WalletSynchronizer(threading.Thread):
                 self.wallet.blocks = result
                 self.wallet.was_updated = True
 
-            elif method == 'server.banner':
-                self.wallet.banner = result
-                self.wallet.was_updated = True
+            elif method == 'server.version':
+                pass
 
             elif method == 'server.peers.subscribe':
                 servers = []
@@ -913,17 +914,14 @@ class WalletSynchronizer(threading.Thread):
                     if ports and version:
                         servers.append((host, ports))
                 self.interface.servers = servers
+                self.interface.trigger_callback('peers')
 
-                # servers_loaded_callback is None for commands, but should
-                # NEVER be None when using the GUI.
-                #if self.servers_loaded_callback is not None:
-                #    self.servers_loaded_callback()
-
-            elif method == 'server.version':
-                pass
+            elif method == 'server.banner':
+                self.wallet.banner = result
+                self.interface.trigger_callback('updated')
 
             else:
-                print_error("Error: Unknown message:" + method + ", " + params + ", " + result)
+                print_error("Error: Unknown message:" + method + ", " + repr(params) + ", " + repr(result) )
 
 
 encode = lambda x: x[::-1].encode('hex')

scripts/servers

@@ -38,5 +38,9 @@ v = d.values()
 numblocks = d.keys()[v.index(max(v))]
 
 for i in interfaces:
-    print "%30s   %s   "%(i.host, i.status) #,  "ok" if abs(n-numblocks)<2 else "lagging"
+    if i.status == 'ok':
+        if abs(i.blocks-numblocks)>1: i.status = "lagging" 
+    else:
+        i.blocks = 0
+    print "%30s   %d   %s   "%(i.host, i.blocks, i.status)