Package org.jgroups.stack

Examples of org.jgroups.stack.ProtocolStack.findProtocol()

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   public boolean isSupportStateTransfer() {
      // tests whether state transfer is supported.  We *need* STREAMING_STATE_TRANSFER.
      ProtocolStack stack;
      if (channel != null && (stack = channel.getProtocolStack()) != null) {
         if (stack.findProtocol(STREAMING_STATE_TRANSFER.class) == null) {
            log.streamingStateTransferNotPresent();
            return false;
         }
      } else {
         log.channelNotSetUp();
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   public boolean isSupportStateTransfer() {
      // tests whether state transfer is supported.  We *need* STREAMING_STATE_TRANSFER.
      ProtocolStack stack;
      if (channel != null && (stack = channel.getProtocolStack()) != null) {
         if (stack.findProtocol(STREAMING_STATE_TRANSFER.class) == null) {
            log.error("Channel does not contain STREAMING_STATE_TRANSFER.  Cannot support state transfers!");
            return false;
         }
      } else {
         log.warn("Channel not set up properly!");
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            ViewId new_vid = new ViewId(ch.getAddress(), vid.getId() + 1);
            View new_view = new View(new_vid, members);

            // inject view in which the shut down member is the only element
            GMS gms = (GMS) stack.findProtocol(GMS.class);
            gms.installView(new_view);
        }
        Util.close(ch);
    }
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    }


    protected void replaceStateTransferProtocolWith(JChannel ch, Class<?> state_transfer_class) throws Exception {
        ProtocolStack stack=ch.getProtocolStack();
        if(stack.findProtocol(state_transfer_class) != null)
            return; // protocol of the right class is already in stack
        Protocol prot=stack.findProtocol(STATE_TRANSFER.class, StreamingStateTransfer.class);
        Protocol new_state_transfer_protcol=(Protocol)state_transfer_class.newInstance();
        if(prot != null) {
            stack.replaceProtocol(prot, new_state_transfer_protcol);
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    protected void replaceStateTransferProtocolWith(JChannel ch, Class<?> state_transfer_class) throws Exception {
        ProtocolStack stack=ch.getProtocolStack();
        if(stack.findProtocol(state_transfer_class) != null)
            return; // protocol of the right class is already in stack
        Protocol prot=stack.findProtocol(STATE_TRANSFER.class, StreamingStateTransfer.class);
        Protocol new_state_transfer_protcol=(Protocol)state_transfer_class.newInstance();
        if(prot != null) {
            stack.replaceProtocol(prot, new_state_transfer_protcol);
        }
        else { // no state transfer protocol found in stack
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        Protocol new_state_transfer_protcol=(Protocol)state_transfer_class.newInstance();
        if(prot != null) {
            stack.replaceProtocol(prot, new_state_transfer_protcol);
        }
        else { // no state transfer protocol found in stack
            Protocol flush=stack.findProtocol(FLUSH.class);
            if(flush != null)
                stack.insertProtocol(new_state_transfer_protcol, ProtocolStack.BELOW, FLUSH.class);
            else
                stack.insertProtocolAtTop(new_state_transfer_protcol);
        }
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        else if(transport instanceof BasicTCP) {
            List<Short> ports=ResourceManager.getNextTcpPorts(bind_addr, num);
            transport.setBindPort(ports.get(0));
            transport.setPortRange(num);

            Protocol ping=stack.findProtocol(TCPPING.class);
            if(ping == null)
                throw new IllegalStateException("TCP stack must consist of TCP:TCPPING - other config are not supported");

            List<String> initial_hosts=new LinkedList<String>();
            for(short port: ports) {
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            ViewId new_vid=new ViewId(ch.getAddress(),vid.getId() + 1);
            View new_view=new View(new_vid,members);

            // inject view in which the shut down member is the only element
            GMS gms=(GMS)stack.findProtocol(GMS.class);
            gms.installView(new_view);
        }
        Util.close(ch);
    }
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        System.out.println(" -- "+ msg);
    }

    private static void modifyStack(JChannel ch) {
        ProtocolStack stack=ch.getProtocolStack();
        GMS gms=(GMS)stack.findProtocol(GMS.class);
        if(gms != null)
            gms.setLogCollectMessages(false);
    }

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                tmp=createChannel(ch);
            }
            tmp.setName(members[i]);
            ProtocolStack stack=tmp.getProtocolStack();

            NAKACK2 nakack=(NAKACK2)stack.findProtocol(NAKACK2.class);
            if(nakack != null)
                nakack.setLogDiscardMessages(false);

            stack.removeProtocol(MERGE3.class);
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