com.sun.jdmk.comm
Interface CommunicatorServerMBean

All Known Implementing Classes:

CommunicatorServer

public abstract interface CommunicatorServerMBean

The CommunicatorServerMBean interface defines generic behaviour for the server part of a connector or an adaptor. Most connectors or adaptors extend CommunicatorServer and inherit this behaviour. Connectors or adaptors that do not fit into this model do not extend CommunicatorServer.

An CommunicatorServer is an active object, it listens for client requests and processes them in its own thread. When necessary, a CommunicatorServer creates other threads to process multiple requests concurrently.

A CommunicatorServer object can be stopped by calling the stop method. When it is stopped, the CommunicatorServer no longer listens to client requests and no longer holds any thread or communication resources. It can be started again by calling the start method.

A CommunicatorServer has a state property which reflects its activity.

CommunicatorServer	State
stopped	OFFLINE
starting	STARTING
running	ONLINE
stopping	STOPPING

The STARTING state marks the transition from OFFLINE to ONLINE.

The STOPPING state marks the transition from ONLINE to OFFLINE. This occurs when the CommunicatorServer is finishing or interrupting active requests.

A CommunicatorServer may serve several clients concurrently. The number of concurrent clients can be limited using the property maxActiveClientCount. The default value of this property is defined by the subclasses.

When a CommunicatorServer is unregistered from the MBeanServer, it is stopped automatically.

Method Summary

java.lang.String	getHost() Gets the host name used by this CommunicatorServer.
int	getPort() Gets the port number used by this CommunicatorServer.
java.lang.String	getProtocol() Gets the protocol being used by this CommunicatorServer.
int	getState() Gets the state of this CommunicatorServer as an integer.
java.lang.String	getStateString() Gets the state of this CommunicatorServer as a string.
boolean	isActive() Tests if the CommunicatorServer is active.
void	setPort(int p) Sets the port number used by this CommunicatorServer.
void	start() Starts this CommunicatorServer.
void	stop() Stops this CommunicatorServer.
boolean	waitState(int s, long timeOut) Waits to be notified of a change in this object.

Method Detail

start

public void start()

Starts this CommunicatorServer.

Has no effect if this CommunicatorServer is ONLINE or STOPPING.

stop

public void stop()

Stops this CommunicatorServer.

Has no effect if this CommunicatorServer is OFFLINE or STOPPING.

isActive

public boolean isActive()

Tests if the CommunicatorServer is active.

Returns:

True if CommunicatorServer is active; false otherwise.

waitState

public boolean waitState(int s,
                         long timeOut)

Waits to be notified of a change in this object. It waits until either of the following two conditions has occurred:

• Another thread notifies a new state that is the same as s argument.
• The timeout period, specified by the timeout argument in milliseconds, has elapsed.

The method returns immediately is the timeOut argument is negative. And if timeOut argument equals 0 (zero), it waits only until another thread notifies a new state that is the same as s argument.

Parameters:

s - The state to wait.

timeOut - The maximum time to wait in milliseconds.

Returns:

True if the state is the same as the s argument; false otherwise.

getState

public int getState()

Gets the state of this CommunicatorServer as an integer.

Returns:

ONLINE, OFFLINE, STARTING or STOPPING.

getStateString

public java.lang.String getStateString()

Gets the state of this CommunicatorServer as a string.

Returns:

One of the strings "ONLINE", "OFFLINE", "STARTING" or "STOPPING".

getHost

public java.lang.String getHost()

Gets the host name used by this CommunicatorServer.

Returns:

The host name used by this CommunicatorServer.

getPort

public int getPort()

Gets the port number used by this CommunicatorServer.

Returns:

The port number used by this CommunicatorServer.

setPort

public void setPort(int p)
             throws java.lang.IllegalStateException

Sets the port number used by this CommunicatorServer.

Parameters:

p - The port number used by this CommunicatorServer.

Throws:

java.lang.IllegalStateException - This method has been invoked while the communicator was ONLINE or STARTING.

getProtocol

public java.lang.String getProtocol()

Gets the protocol being used by this CommunicatorServer.

Returns:

The protocol as a string.