org.jgroups.protocols.PingHeader Maven / Gradle / Ivy

Go to download

Show more of this group Show more artifacts with this name
Show all versions of wildfly-client-all

This artifact provides a single jar that contains all classes required to use remote Jakarta Enterprise Beans and Jakarta Messaging, including all dependencies. It is intended for use by those not using maven, maven users should just import the Jakarta Enterprise Beans and Jakarta Messaging BOM's instead (shaded JAR's cause lots of problems with maven, as it is very easy to inadvertently end up with different versions on classes on the class path).

There is a newer version: 35.0.0.Final

Show newest version


package org.jgroups.protocols;

import org.jgroups.Global;
import org.jgroups.Header;
import org.jgroups.util.Bits;

import java.io.DataInput;
import java.io.DataOutput;


/**
 * @author Bela Ban
 */
public class PingHeader extends Header {
    public static final byte GET_MBRS_REQ=1;
    public static final byte GET_MBRS_RSP=2;

    protected byte                          type=0;
    protected String                        cluster_name;


    public PingHeader() {
    }

    public PingHeader(byte type)                               {this.type=type;}
    public byte type()                                         {return type;}
    public PingHeader clusterName(String name)                 {this.cluster_name=name; return this;}

    public int size() {
        int retval=Global.BYTE_SIZE *2; // type and cluster_name presence
        if(cluster_name != null)
            retval += cluster_name.length() +2;
        return retval;
    }

    public String toString() {
        StringBuilder sb=new StringBuilder();
        sb.append("[type=" + type2Str(type));
        if(cluster_name != null)
            sb.append(", cluster=").append(cluster_name);
        sb.append(']');
        return sb.toString();
    }

    static String type2Str(byte t) {
        switch(t) {
            case GET_MBRS_REQ: return "GET_MBRS_REQ";
            case GET_MBRS_RSP: return "GET_MBRS_RSP";
            default:           return "";
        }
    }


    public void writeTo(DataOutput outstream) throws Exception {
        outstream.writeByte(type);
        Bits.writeString(cluster_name,outstream);
    }

    public void readFrom(DataInput instream) throws Exception {
        type=instream.readByte();
        cluster_name=Bits.readString(instream);
    }
}