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java.lang.Object
   |
   +----edu.utah.janos.antsr.core.Capsule
           |
           +----edu.utah.janos.antsr.apps.statsfusion.StatsCapsule

Summary

public class  StatsCapsule
     extends edu.utah.janos.antsr.core.Capsule
{
          // Fields 12
     private static final byte[] MID;
     private static final byte[] PID;
     public Vector branches;
     public int cachetime;
     public byte depth;
     public short dpt;
     public long keyid;
     public int maxwaittime;
     public long now;
     private int numreturns;
     public int returnwaittime;
     public int rootaddress;

          // Constructors 2
     public StatsCapsule();
     public StatsCapsule(int);

          // Methods 8
     private int branch(Node);
     public Xdr decode();
     public Xdr encode();
     public boolean evaluate(Node);
     public int length();
     protected byte[] mid();
     protected byte[] pid();
     private StatsReturnCapsule waitForReturns(StatsReturnCapsule, int, Node);
}

Stats request capsule.

Author:

Janos Ministry of Development

Fields

· MID

Summary  |  Top

   private static final byte[] MID

   private static final byte[] PID

   public int rootaddress

   public long keyid

   public short dpt

   public byte depth

   public long now

   public int cachetime

   public int returnwaittime

The maximum milliseconds to wait for unreturned capsules before sending what has been accumlated so far

   public int maxwaittime

The maximum milliseconds to wait before giving up on unresponded nodes; only accurate to the nearest returnwaittime

   public Vector branches

   private int numreturns

Constructors

· StatsCapsule

Summary  |  Top

   public StatsCapsule() 

   public StatsCapsule(int d) 

   protected byte[] mid() 

Overrides:

mid in class Capsule

   protected byte[] pid() 

Overrides:

pid in class Capsule

   public int length() 

Overrides:

length in class Capsule

   public Xdr encode() 

Stats request capsules look like:
4 Address of the root of the tree
4 Unique key id of this request tree
2 Application port
1 Depth
4 Time capsule was sent 4 Cachetime parameter 4 Returnwait parameter 4 Returntimeout parameter

Overrides:

encode in class Capsule

   public Xdr decode() 

Overrides:

decode in class Capsule

   private int branch(Node n) 

Does the actual process of branching the request packet out to all neighboring nodes except those the have already been visited.

Uses soft-state to persistantly keep track of which nodes have already been visited and to keep from sending back to root or the source of this request capsule

Returns:

The number of requests branched out

   private StatsReturnCapsule waitForReturns(StatsReturnCapsule baseCap, 
                                             int numbranches, 
                                             Node n) 

Waits for a maximum amount of time or for the number of expected responses from neighboring nodes and returns a fused capsule of all the stats return capsules that came to this node.

Parameter	Description
baseCap	- The capsule to fuse other incomming capsules to, or null to start with the first capsule that comes in
numbranches	- The number of expected branches to return
n	- This node

   public boolean evaluate(Node n) 

Overrides:

evaluate in class Capsule

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