feeder: use FrappyManager to connect to running frappy instances

streams.py

@@ -23,7 +23,14 @@ INF = float('inf')
 
 
 class Base:
-    select_dict = {}
+    select_read = {}
+    select_write = {}
+
+    def close(self):
+        print('CLOSE BASE')
+
+    def finish_events(self, *args):
+        print('FINISH BASE')
 
 
 def short_hostname(host):
@@ -67,12 +74,12 @@ class Stream(Base):
             self.connect()
             self.init(**kwds)
         except Exception as e:
-            print(self.uri, repr(e))
+            print('I', self.uri, repr(e))
             raise
 
     def connect(self):
         self.socket = socket.create_connection(parse_uri(self.uri))
-        self.select_dict[self.socket.fileno()] = self
+        self.select_read[self.socket.fileno()] = self
         self.settimeout(self.timeout)
         host, _, port = self.uri.partition(':')
         # try to convert uri to host name
@@ -96,7 +103,7 @@ class Stream(Base):
         """Do our best to close a socket."""
         if self.socket is None:
             return
-        self.select_dict.pop(self.socket.fileno(), None)
+        self.select_read.pop(self.socket.fileno(), None)
         print(self.uri, 'close socket')
         try:
             self.socket.shutdown(socket.SHUT_RDWR)
@@ -253,8 +260,8 @@ class EventStream:
         self.udp = {v.socket.fileno(): v for v in udp}
 
     def wait_ready(self, timeout):
-        ready = select(Stream.select_dict, [], [], timeout)[0]
-        return [Stream.select_dict[f] for f in ready]
+        rd, wr = select(Stream.select_read, Stream.select_write, [], timeout)[0:2]
+        return [Stream.select_read[f] for f in rd] + [Stream.select_write[f] for f in wr]
 
     def get_events(self, maxevents=20):
         """return events from all streams
@@ -278,7 +285,7 @@ class EventStream:
                                 self.streams[uri] = stream = streamcls(uri, **kwargs)
                                 print('added stream', uri, kwargs)
                             except Exception as e:
-                                print('can not connect to', uri, repr(e))
+                                print('can not connect to', uri, repr(e), streamcls)
                                 continue
                         device = stream.tags.get('device')
                         events.append(('stream', kwargs.get('instrument', '0'),