Examples of org.jgroups.stack.LogicalAddress

org.jgroups.stack.LogicalAddress

Logical address that spans the lifetime of a member. Assigned at member (JVM) startup, and retained until member is shutdown. Note that the address does not change on disconnect-connect sequences. For example, when a member is shunned and subsequently readmitted to the group, the member's address (LogicalAddress) remains the same.
An instance of LogicalAddress is generated by the transport protocol. Currently, only UDP_NIO generates LogicalAddresses.
Note that host, timestamp and id are supposed to make LogicalAddress as unique as possible. However, there is a remote chance that 2 instances started on the same machine create their address at exactly the same time, resulting in identical addresses (leading to problems). In the future, I will try to make this totally unique, by for example using the PID of the current process (once available though the JDK, or by locking on a common resource (e.g. /dev/random) to serialize creation. However, as for now, chances are you will never experience this problem. @author Bela Ban, Dec 23 2003

    }




    public void setUp() throws Exception {
        super.setUp();
        a=new LogicalAddress("host1", null);
        b=new LogicalAddress("host1", null);
        c=(LogicalAddress)a.clone();
    }

        ByteArrayOutputStream bos=new ByteArrayOutputStream();
        ObjectOutputStream oos=new ObjectOutputStream(bos);
        byte[] buf=null;
        ByteArrayInputStream bis=null;
        ObjectInputStream ois;
        LogicalAddress a2, b2;


        a.setAdditionalData(null);
        b.setAdditionalData("Bela Ban".getBytes());
        oos.writeObject(a);
        oos.writeObject(b);




        buf=bos.toByteArray();
        bis=new ByteArrayInputStream(buf);
        ois=new ObjectInputStream(bis);
        a2=(LogicalAddress)ois.readObject();
        b2=(LogicalAddress)ois.readObject();


        assertTrue(a.equals(a2));
        assertTrue(b.equals(b2));


        assertTrue(a2.getAdditionalData() == null);
        assertTrue("Bela Ban".equals(new String(b2.getAdditionalData())));
    }

        ByteArrayOutputStream bos=new ByteArrayOutputStream();
        ObjectOutputStream oos=new ObjectOutputStream(bos);
        byte[] buf=null;
        ByteArrayInputStream bis=null;
        ObjectInputStream ois;
        LogicalAddress a2, b2, c2;


        oos.writeObject(a);
        oos.writeObject(b);
        oos.writeObject(c);

Examples of org.jgroups.stack.LogicalAddress

Related Classes of org.jgroups.stack.LogicalAddress