/*
* CDDL HEADER START
*
* The contents of this file are subject to the terms of the
* Common Development and Distribution License, Version 1.0 only
* (the "License"). You may not use this file except in compliance
* with the License.
*
* You can obtain a copy of the license at
* trunk/opends/resource/legal-notices/OpenDS.LICENSE
* or https://OpenDS.dev.java.net/OpenDS.LICENSE.
* See the License for the specific language governing permissions
* and limitations under the License.
*
* When distributing Covered Code, include this CDDL HEADER in each
* file and include the License file at
* trunk/opends/resource/legal-notices/OpenDS.LICENSE. If applicable,
* add the following below this CDDL HEADER, with the fields enclosed
* by brackets "[]" replaced with your own identifying information:
* Portions Copyright [yyyy] [name of copyright owner]
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* CDDL HEADER END
*
*
* Copyright 2006-2009 Sun Microsystems, Inc.
*/
package org.opends.server.protocols.internal;
import org.opends.messages.Message;
import java.util.Collection;
import java.util.LinkedList;
import org.opends.server.admin.std.server.*;
import org.opends.server.api.ClientConnection;
import org.opends.server.api.ConnectionHandler;
import org.opends.server.config.ConfigException;
import org.opends.server.types.DN;
import org.opends.server.types.InitializationException;
import org.opends.server.types.HostPort;
/**
* This class defines a Directory Server connection handler that will
* handle internal "connections".
*/
@org.opends.server.types.PublicAPI(
stability=org.opends.server.types.StabilityLevel.PRIVATE,
mayInstantiate=false,
mayExtend=false,
mayInvoke=false)
public final class InternalConnectionHandler
extends ConnectionHandler
{
// The singleton instance of this internal connection handler.
private static InternalConnectionHandler handlerInstance =
new InternalConnectionHandler();
// The list of "connections" associated with this connection
// handler.
private LinkedList<ClientConnection> connectionList;
// The list of listeners associated with this connection handler.
private LinkedList<HostPort> listeners;
// The name of the protocol for this connection handler.
private String protocol;
// Configuration object of the connection hanlder
private ConnectionHandlerCfg configuration;
/**
* Creates a new instance of this connection handler. All
* initialization should be done in the
* <CODE>initializeConnectionHandler</CODE> method.
*/
private InternalConnectionHandler()
{
super("Internal Connection Handler Thread");
// Since we can't guarantee that the initializeConnectionHandler
// method will always be called for this method, we'll do the
// necessary "initialization" here.
protocol = "internal";
connectionList = new LinkedList<ClientConnection>();
listeners = new LinkedList<HostPort>();
}
/**
* Retrieves the static instance of this internal connection
* handler.
*
* @return The static instance of this internal connection handler.
*/
public static InternalConnectionHandler getInstance()
{
return handlerInstance;
}
/**
* Initializes this connection handler provider based on the
* information in the provided connection handler configuration.
*
* @param configuration The connection handler configuration that
* contains the information to use to
* initialize this connection handler.
*
* @throws ConfigException If an unrecoverable problem arises in
* the process of performing the
* initialization as a result of the
* server configuration.
*
* @throws InitializationException If a problem occurs during
* initialization that is not
* related to the server
* configuration.
*/
@Override
public void initializeConnectionHandler(
ConnectionHandlerCfg configuration)
throws ConfigException, InitializationException
{
this.configuration = configuration;
}
/**
* {@inheritDoc}
*/
@Override()
public void finalizeConnectionHandler(Message finalizeReason)
{
// No implementation is required.
}
/**
* Retrieves a name that may be used to refer to this connection
* handler. Every connection handler instance (even handlers of the
* same type) must have a unique name.
*
* @return A unique name that may be used to refer to this
* connection handler.
*/
@Override()
public String getConnectionHandlerName()
{
return "Internal Connection Handler";
}
/**
* Retrieves the name of the protocol used to communicate with
* clients. It should take into account any special naming that may
* be needed to express any security mechanisms or other constraints
* in place (e.g., "LDAPS" for LDAP over SSL).
*
* @return The name of the protocol used to communicate with
* clients.
*/
@Override()
public String getProtocol()
{
return protocol;
}
/**
* Retrieves information about the listener(s) that will be used to
* accept client connections.
*
* @return Information about the listener(s) that will be used to
* accept client connections, or an empty list if this
* connection handler does not accept connections from
* network clients.
*/
@Override()
public Collection<HostPort> getListeners()
{
return listeners;
}
/**
* Retrieves the set of active client connections that have been
* established through this connection handler.
*
* @return The set of active client connections that have been
* established through this connection handler.
*/
@Override()
public Collection<ClientConnection> getClientConnections()
{
return connectionList;
}
/**
* Operates in a loop, accepting new connections and ensuring that
* requests on those connections are handled properly.
*/
@Override()
public void run()
{
// No implementation is required since this connection handler
// won't actually accept connections.
return;
}
/**
* Retrieves a string representation of this connection handler.
*
* @return A string representation of this connection handler.
*/
@Override()
public String toString()
{
return "Internal Connection Handler";
}
/**
* Appends a string representation of this connection handler to the
* provided buffer.
*
* @param buffer The buffer to which the information should be
* appended.
*/
@Override()
public void toString(StringBuilder buffer)
{
buffer.append("Internal Connection Handler");
}
/**
* Called near the end of server shutdown. This ensures that a new
* InternalClientConnection is created if the server is immediately
* restarted as part of an in-core restart.
*/
public static void clearRootClientConnectionAtShutdown()
{
InternalClientConnection.clearRootClientConnectionAtShutdown();
}
/**
* Return the configuration dn of the object.
* @return DN of the entry.
*/
@Override()
public DN getComponentEntryDN() {
return this.configuration.dn();
}
}