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package org.apache.catalina;
import org.apache.catalina.deploy.NamingResources;
/**
* A <code>Server</code> element represents the entire Catalina
* servlet container. Its attributes represent the characteristics of
* the servlet container as a whole. A <code>Server</code> may contain
* one or more <code>Services</code>, and the top level set of naming
* resources.
* <p>
* Normally, an implementation of this interface will also implement
* <code>Lifecycle</code>, such that when the <code>start()</code> and
* <code>stop()</code> methods are called, all of the defined
* <code>Services</code> are also started or stopped.
* <p>
* In between, the implementation must open a server socket on the port number
* specified by the <code>port</code> property. When a connection is accepted,
* the first line is read and compared with the specified shutdown command.
* If the command matches, shutdown of the server is initiated.
* <p>
* <strong>NOTE</strong> - The concrete implementation of this class should
* register the (singleton) instance with the <code>ServerFactory</code>
* class in its constructor(s).
*
* @author Craig R. McClanahan
* @version $Revision: 1.2 $ $Date: 2005/12/08 01:27:19 $
*/
public interface Server {
// ------------------------------------------------------------- Properties
/**
* Return descriptive information about this Server implementation and
* the corresponding version number, in the format
* <code><description>/<version></code>.
*/
public String getInfo();
/**
* Return the global naming resources.
*/
public NamingResources getGlobalNamingResources();
/**
* Set the global naming resources.
*
* @param globalNamingResources The new global naming resources
*/
public void setGlobalNamingResources
(NamingResources globalNamingResources);
/**
* Return the port number we listen to for shutdown commands.
*/
public int getPort();
/**
* Set the port number we listen to for shutdown commands.
*
* @param port The new port number
*/
public void setPort(int port);
/**
* Return the shutdown command string we are waiting for.
*/
public String getShutdown();
/**
* Set the shutdown command we are waiting for.
*
* @param shutdown The new shutdown command
*/
public void setShutdown(String shutdown);
// --------------------------------------------------------- Public Methods
/**
* Add a new Service to the set of defined Services.
*
* @param service The Service to be added
*/
public void addService(Service service);
/**
* Wait until a proper shutdown command is received, then return.
*/
public void await();
/**
* Return the specified Service (if it exists); otherwise return
* <code>null</code>.
*
* @param name Name of the Service to be returned
*/
public Service findService(String name);
/**
* Return the set of Services defined within this Server.
*/
public Service[] findServices();
/**
* Remove the specified Service from the set associated from this
* Server.
*
* @param service The Service to be removed
*/
public void removeService(Service service);
/**
* Invoke a pre-startup initialization. This is used to allow connectors
* to bind to restricted ports under Unix operating environments.
*
* @exception LifecycleException If this server was already initialized.
*/
public void initialize()
throws LifecycleException;
}