Examples of org.jgroups.stack.ProtocolStack

org.jgroups.stack.ProtocolStack
A ProtocolStack manages a number of protocols layered above each other. It creates all protocol classes, initializes them and, when ready, starts all of them, beginning with the bottom most protocol. It also dispatches messages received from the stack to registered objects (e.g. channel, GMP) and sends messages sent by those objects down the stack.
The ProtocolStack makes use of the Configurator to setup and initialize stacks, and to destroy them again when not needed anymore @author Bela Ban

        discard.start();
        stack.insertProtocol(discard, ProtocolStack.ABOVE, transport.getName());
    }
    
    private static void replaceDiscoveryProtocol(JChannel ch) throws Exception {
        ProtocolStack stack=ch.getProtocolStack();
        Protocol discovery=stack.removeProtocol("TCPPING");
        if(discovery != null){
            Protocol transport = stack.getTransport();
            MPING mping =new MPING();
            mping.setProperties(new Properties());
            mping.setProtocolStack(ch.getProtocolStack());
            stack.insertProtocol(mping, ProtocolStack.ABOVE, transport.getName());
            mping.init();
            mping.start();            
            System.out.println("Replaced TCPPING with MPING. See http://wiki.jboss.org/wiki/Wiki.jsp?page=JGroupsMERGE2");            
        }        
    }

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            System.out.println("Replaced TCPPING with MPING. See http://wiki.jboss.org/wiki/Wiki.jsp?page=JGroupsMERGE2");            
        }        
    }


    private static void modiftFDAndMergeSettings(JChannel ch) {
        ProtocolStack stack=ch.getProtocolStack();


        FD fd=(FD)stack.findProtocol("FD");
        if(fd != null) {
            fd.setMaxTries(3);
            fd.setTimeout(1000);
        }
        MERGE2 merge=(MERGE2)stack.findProtocol("MERGE2");
        if(merge != null) {
            merge.setMinInterval(5000);
            merge.setMaxInterval(10000);
        }      
    }

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     * Tests sending 1, 2 (OOB) and 3, where they are received in the order 1, 3, 2. Message 3 should not get delivered
     * until message 4 is received (http://jira.jboss.com/jira/browse/JGRP-780)
     */
    public void testRegularAndOOBUnicasts() throws Exception {
        DISCARD discard=new DISCARD();
        ProtocolStack stack=c1.getProtocolStack();
        stack.insertProtocol(discard, ProtocolStack.BELOW, UNICAST.class);


        Address dest=c2.getLocalAddress();
        Message m1=new Message(dest, null, 1);
        Message m2=new Message(dest, null, 2);
        m2.setFlag(Message.OOB);

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        assertTrue(list.contains(1) && list.contains(2) && list.contains(3));
    }
    
    public void testRegularAndOOBUnicasts2() throws Exception {
        DISCARD discard=new DISCARD();
        ProtocolStack stack=c1.getProtocolStack();
        stack.insertProtocol(discard, ProtocolStack.BELOW, UNICAST.class);


        Address dest=c2.getLocalAddress();
        Message m1=new Message(dest, null, 1);
        Message m2=new Message(dest, null, 2);
        m2.setFlag(Message.OOB);

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        assertTrue(list.contains(1) && list.contains(2) && list.contains(3) && list.contains(4));
    }


    public void testRegularAndOOBMulticasts() throws Exception {
        DISCARD discard=new DISCARD();
        ProtocolStack stack=c1.getProtocolStack();
        stack.insertProtocol(discard, ProtocolStack.BELOW, NAKACK.class);
        c1.setOpt(Channel.LOCAL, false);


        Address dest=null; // send to all
        Message m1=new Message(dest, null, 1);
        Message m2=new Message(dest, null, 2);

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        assertTrue(list.contains(1) && list.contains(2) && list.contains(3));
    }
    
    public void testRandomRegularAndOOBMulticasts() throws Exception {
        DISCARD discard=new DISCARD();
        ProtocolStack stack=c1.getProtocolStack();
        stack.insertProtocol(discard, ProtocolStack.BELOW, NAKACK.class);
        Address dest=null; // send to all
        MyReceiver r1=new MyReceiver(), r2=new MyReceiver();
        c1.setReceiver(r1);
        c2.setReceiver(r2);
        final int NUM_MSGS=100;

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        }
    }


    private static void changeProperties(JChannel ch) {
        ch.setOpt(Channel.AUTO_RECONNECT, true);
        ProtocolStack stack=ch.getProtocolStack();
        GMS gms=(GMS)stack.findProtocol("GMS");
        if(gms != null) {
            gms.setViewBundling(true);
            gms.setMaxBundlingTime(300);
            gms.setPrintLocalAddr(false);
        }
        MERGE2 merge=(MERGE2)stack.findProtocol("MERGE2");
        if(merge != null) {
            merge.setMinInterval(2000);
            merge.setMaxInterval(5000);
        }
        VIEW_SYNC sync=(VIEW_SYNC)stack.findProtocol(VIEW_SYNC.class);
        if(sync != null)
            sync.setAverageSendInterval(5000);
        NAKACK nakack=(NAKACK)stack.findProtocol(NAKACK.class);
        if(nakack != null)
            nakack.setLogDiscardMsgs(false);
    }

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    /**
     * Returns a pretty-printed form of all the protocols. If include_properties
     * is set, the properties for each protocol will also be printed.
     */
    public String printProtocolSpec(boolean include_properties) {
        ProtocolStack ps=getProtocolStack();
        return ps != null? ps.printProtocolSpec(include_properties) : null;
    }

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        try {
            mq.reset();


            // new stack is created on open() - bela June 12 2003
            prot_stack=new ProtocolStack(this, props);
            prot_stack.setup();
            closed=false;
        }
        catch(Exception e) {
            throw new ChannelException("failed to open channel" , e);

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        this.protStack[this.protStack.length-1].setDownProtocol(ad);
        top=protStack[0];
        bottom=this.protStack[this.protStack.length-1];


        try {
            prot_stack=new ProtocolStack();
        } catch (ChannelException e) {           
            e.printStackTrace();
        }


        if(protStack.length > 1) {

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