Examples of org.jgroups.StreamingGetStateEvent

org.jgroups.StreamingGetStateEvent

Represents an event returned by channel.receive(), as a result of another channel instance requesting a state from this channel. Other channel has to invoke channel.getState() indicating intent of state retrieval.

Allows applications using a channel in a pull mode to receive StreamingGetStateEvent event and thus provide state to requsting channel instance. Channels have to be configured with STREAMING_STATE_TRANSFER protocol rather than the default STATE_TRANSFER protocol in order to receive this event

The following code demonstrates how to pull events from a channel, processing StreamingGetStateEvent and sending hypothetical state through OutputStream reference.

 Object obj=channel.receive(0); if(obj instanceof StreamingGetStateEvent) { StreamingGetStateEvent evt=(StreamingGetStateEvent)obj; OutputStream oos = null; try {			 oos = new ObjectOutputStream(evt.getArg());			 oos.writeObject(state);    oos.flush(); } catch (Exception e) {}  finally { try {				 oos.close(); } catch (IOException e) { System.err.println(e); } }                 }

@author Vladimir Blagojevic @see org.jgroups.JChannel#getState(Address,long) @see org.jgroups.StreamingMessageListener#getState(OutputStream) @since 2.4

            // I will discard any transient message I
            // receive
          } else {
            if (msgReceived instanceof View) {              
            } else if (msgReceived instanceof StreamingGetStateEvent) {
              StreamingGetStateEvent evt = (StreamingGetStateEvent) msgReceived;
              if(evt.getStateId()!=null)
              {
                this.getState(evt.getStateId(),evt.getArg());  
              }
              else
              {
                this.getState(evt.getArg());
              }
            } else if (msgReceived instanceof StreamingSetStateEvent) {
              StreamingSetStateEvent evt = (StreamingSetStateEvent) msgReceived;
              if(evt.getStateId()!=null)
              {
                this.setState(evt.getStateId(),evt.getArg());
              }
              else
              {
                this.setState(evt.getArg());
              }
            } 
          }                    


        } catch (TimeoutException e) {

Examples of org.jgroups.StreamingGetStateEvent

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