Examples of JChannel

com.dotcms.repackage.org.jgroups.JChannel
org.javagroups.JChannel
org.jgroups.JChannel
JChannel is a pure Java implementation of Channel. When a JChannel object is instantiated it automatically sets up the protocol stack.
Properties
Properties are used to configure a channel, and are accepted in several forms; the String form is described here. A property string consists of a number of properties separated by colons. For example:
```
"<prop1>(arg1=val1):<prop2>(arg1=val1;arg2=val2):<prop3>:<propn>"
```
Each property relates directly to a protocol layer, which is implemented as a Java class. When a protocol stack is to be created based on the above property string, the first property becomes the bottom-most layer, the second one will be placed on the first, etc.: the stack is created from the bottom to the top, as the string is parsed from left to right. Each property has to be the name of a Java class that resides in the {@link org.jgroups.protocols} package.
Note that only the base name has to be given, not the fully specified class name (e.g., UDP instead of org.jgroups.protocols.UDP).
Each layer may have 0 or more arguments, which are specified as a list of name/value pairs in parentheses directly after the property. In the example above, the first protocol layer has 1 argument, the second 2, the third none. When a layer is created, these properties (if there are any) will be set in a layer by invoking the layer's setProperties() method
As an example the property string below instructs JGroups to create a JChannel with protocols UDP, PING, FD and GMS:
```
"UDP(mcast_addr=228.10.9.8;mcast_port=5678):PING:FD:GMS"
```
The UDP protocol layer is at the bottom of the stack, and it should use mcast address 228.10.9.8. and port 5678 rather than the default IP multicast address and port. The only other argument instructs FD to output debug information while executing. Property UDP refers to a class {@link org.jgroups.protocols.UDP}, which is subsequently loaded and an instance of which is created as protocol layer. If any of these classes are not found, an exception will be thrown and the construction of the stack will be aborted. @author Bela Ban @version $Id: JChannel.java,v 1.106.2.1 2006/12/04 22:47:16 vlada Exp $

Examples of com.dotcms.repackage.org.jgroups.JChannel


      if(channel!=null) {
          channel.disconnect();
      }
      
      channel = new JChannel(classLoader.getResource(cacheFile));
      channel.setReceiver(this);
      
      channel.connect(Config.getStringProperty("CACHE_JGROUPS_GROUP_NAME","dotCMSCluster"));
      channel.setOpt(JChannel.LOCAL, false);
      useJgroups = true;

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Examples of org.javagroups.JChannel

        {
            // make configurable
            String props="UDP(mcast_addr=" + lca.getUdpMulticastAddr() + ";mcast_port=" + lca.getUdpMulticastPort()+ "):PING:MERGE2(min_interval=5000;max_interval=10000):FD:STABLE:NAKACK:UNICAST:" +
             "FRAG:FLUSH:GMS:VIEW_ENFORCER:STATE_TRANSFER:QUEUE";


            javagroups = new JChannel(props);
            javagroups.setOpt(javagroups.LOCAL, Boolean.FALSE);
            // could have a channel per region
            //javagroups.connect(IJGConstants.DEFAULT_JG_GROUP_NAME);
            javagroups.connect(groupName);

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Examples of org.jgroups.JChannel

    private ReplicatedHashMap<String,String> map2;
    private ConcurrentHashMap<String,String> wrap=new ConcurrentHashMap<String,String>();


    @BeforeClass
    protected void setUp() throws Exception {
        JChannel c1=createChannel(true, 2);
        this.map1=new ReplicatedHashMap<String,String>(c1, false);
        map1.setBlockingUpdates(true);
        c1.connect("ReplicatedHashMapTest");
        this.map1.start(5000);


        JChannel c2=createChannel(c1);
        this.map2=new ReplicatedHashMap<String,String>(wrap, c2, false);
        map2.setBlockingUpdates(true);
        c2.connect("ReplicatedHashMapTest");
        this.map2.start(5000);
    }

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Examples of org.jgroups.JChannel

     * be controlled with mainTimeout. If this time passes and the test
     * doesn't see all the messages, it declares itself failed.
     */
    @Test
    public void testStress() throws Exception {
        channel=new JChannel("tunnel.xml");
        channel.connect("agroup");
        channel.setReceiver(new ReceiverAdapter() {


            @Override
            public void receive(Message msg) {

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Examples of org.jgroups.JChannel

            t.init();
        }        
    }


    public void testSimpleConnect() throws Exception {
        channel = new JChannel(props);
        modifyChannel(channel);
        channel.connect("testSimpleConnect");
        assert channel.getLocalAddress() != null;
        assert channel.getView().size() == 1;
        channel.disconnect();

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Examples of org.jgroups.JChannel

    /**
     * Tests connect with two members
     * 
     **/
    public void testConnectTwoChannels() throws Exception {
        coordinator = new JChannel(props);
        channel = new JChannel(props);
        modifyChannel(channel,coordinator);
        coordinator.connect("testConnectTwoChannels");
        channel.connect("testConnectTwoChannels");
        View view = channel.getView();
        assert view.size() == 2;

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Examples of org.jgroups.JChannel

        }
        
    }
    
    public void start() throws Exception {
        ch=new JChannel(props);
        if(name != null)
            ch.setName(name);
        execution_service=new ExecutionService(ch);
        runner=new ExecutionRunner(ch);
        ch.connect("executing-cluster");

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Examples of org.jgroups.JChannel






    private void setUp(String props) {
        try {
            channel=new JChannel(props);
            channel.connect("test1");
        }
        catch(Throwable t) {
            t.printStackTrace(System.err);
            assert false : "channel could not be created";

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Examples of org.jgroups.JChannel


    private void _testWithProps(boolean mcast, String cluster_name) throws Exception {
        Map<String,Object> m=new HashMap<String,Object>();
        m.put("additional_data", new byte[] { 'b', 'e', 'l', 'a' });
        byte[] buf=new byte[1000];
        JChannel ch1=null, ch2=null;


        try {
            ch1=createChannel(true, 2);
            ch1.down(new Event(Event.CONFIG, m));
            ch2=createChannel(ch1); // same props as ch1 above
            ch2.down(new Event(Event.CONFIG, m));
            MyReceiver receiver=new MyReceiver();
            ch2.setReceiver(receiver);
            ch1.connect(cluster_name);
            ch2.connect(cluster_name);


            if(mcast)
                ch1.send(new Message(null, null, buf));
            else {
                Address dest=ch2.getAddress();
                ch1.send(new Message(dest, null, buf));
            }


            Util.sleep(500); // msgs are sent asynchronously, give ch2 some time to receive them
            List<Message> list=receiver.getMsgs();
            assert !list.isEmpty();
            Message msg=list.get(0);
            UUID src=(UUID)msg.getSrc();
            assert src != null;
            assert src.getAdditionalData() != null;
            assert src.getAdditionalData().length == 4;
        }
        finally {
            if(ch2 != null) ch2.close();
            if(ch1 != null) ch1.close();
        }
    }

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Examples of org.jgroups.JChannel


    @ManagedOperation
    public void start() throws Exception {
        hash_function=new ConsistentHashFunction<K>();
        addMembershipListener((MembershipListener)hash_function);
        ch=new JChannel(props);
        disp=new RpcDispatcher(ch, null, this, this);
        RpcDispatcher.Marshaller marshaller=new CustomMarshaller();
        disp.setRequestMarshaller(marshaller);
        disp.setResponseMarshaller(marshaller);
        disp.setMethodLookup(new MethodLookup() {

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