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

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This artifact provides a single jar that contains all classes required to use remote EJB and JMS, including all dependencies. It is intended for use by those not using maven, maven users should just import the EJB and JMS 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).

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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;
import java.io.IOException;
import java.util.function.Supplier;


/**
 * @author Bela Ban
 */
public class FragHeader extends Header {
    public long    id;
    public int     frag_id;
    public int     num_frags;
    public boolean needs_deserialization; // true if byte[] array of a fragment needs to be de-serialized into a payload
    public short   original_type;


    public FragHeader() {
    } // used for externalization

    public FragHeader(long id, int frag_id, int num_frags) {
        this.id=id;
        this.frag_id=frag_id;
        this.num_frags=num_frags;
    }

    public short getMagicId() {return 52;}

    public Supplier create() {
        return FragHeader::new;
    }
    public boolean    needsDeserialization()             {return needs_deserialization;}
    public FragHeader needsDeserialization(boolean flag) {needs_deserialization=flag; return this;}
    public short      getOriginalType()                  {return original_type;}
    public FragHeader setOriginalType(short type)        {this.original_type=type; return this;}


    public String toString() {
        return "[id=" + id + ", frag_id=" + frag_id + ", num_frags=" + num_frags + ']';
    }

    @Override
    public void writeTo(DataOutput out) throws IOException {
        Bits.writeLongCompressed(id, out);
        Bits.writeIntCompressed(frag_id, out);
        Bits.writeIntCompressed(num_frags, out);
        out.writeBoolean(needs_deserialization);
        out.writeShort(original_type);
    }

    @Override
    public int serializedSize() {
        return Bits.size(id) + Bits.size(frag_id) + Bits.size(num_frags) + Global.BYTE_SIZE + Global.SHORT_SIZE;
    }

    @Override
    public void readFrom(DataInput in) throws IOException {
        id=Bits.readLongCompressed(in);
        frag_id=Bits.readIntCompressed(in);
        num_frags=Bits.readIntCompressed(in);
        needs_deserialization=in.readBoolean();
        original_type=in.readShort();
    }

}