Package com.yahoo.messagebus.network.rpc

Class RPCTargetPool

java.lang.Object
com.yahoo.messagebus.network.rpc.RPCTargetPool
public class RPCTargetPool extends Object
Class used to reuse targets for the same address when sending messages over the rpc network.
Author:
Haavard Pettersen

  • Constructor Summary

    Constructors
    Constructor
    Description
    RPCTargetPool(double expireSecs, int numTargetsPerSpec)
    Constructs a new instance of this class, and registers the SystemTimer for detecting and closing connections that have expired according to the given parameter.
    RPCTargetPool(com.yahoo.concurrent.Timer timer, double expireSecs, int numTargetsPerSpec)
    Constructs a new instance of this class, using the given Timer for detecting and closing connections that have expired according to the second paramter.

  • Method Summary

    Modifier and Type
    Method
    Description
    void
    flushTargets(boolean force)
    Closes all unused target connections.
    RPCTarget
    getTarget(com.yahoo.jrt.Supervisor orb, RPCServiceAddress address)
    This method will return a target for the given address.
    int
    size()
    Returns the number of targets currently contained in this.

    Methods inherited from class java.lang.Object

    clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

  • Constructor Details

    • RPCTargetPool

      public RPCTargetPool(double expireSecs, int numTargetsPerSpec)
      Constructs a new instance of this class, and registers the SystemTimer for detecting and closing connections that have expired according to the given parameter.
      Parameters:
      expireSecs - The number of seconds until an idle connection is closed.

    • RPCTargetPool

      public RPCTargetPool(com.yahoo.concurrent.Timer timer, double expireSecs, int numTargetsPerSpec)
      Constructs a new instance of this class, using the given Timer for detecting and closing connections that have expired according to the second paramter.
      Parameters:
      timer - The timer to use for connection expiration.
      expireSecs - The number of seconds until an idle connection is closed.

  • Method Details

    • flushTargets

      public void flushTargets(boolean force)
      Closes all unused target connections. Unless the force argument is true, this method will allow a grace period for all connections after last use before it starts closing them. This allows the most recently used connections to stay open.
      Parameters:
      force - Whether or not to force flush.

    • getTarget

      public RPCTarget getTarget(com.yahoo.jrt.Supervisor orb, RPCServiceAddress address)
      This method will return a target for the given address. If a target does not currently exist for the given address, it will be created and added to the internal map. Each target is also reference counted so that an active target is never expired.
      Parameters:
      orb - The supervisor to use to connect to the target.
      address - The address to resolve to a target.
      Returns:
      A target for the given address.

    • size

      public int size()
      Returns the number of targets currently contained in this.
      Returns:
      The size of the internal map.