/*
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* CDDL HEADER START
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*
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* The contents of this file are subject to the terms of the
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* Common Development and Distribution License, Version 1.0 only
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* (the "License"). You may not use this file except in compliance
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* with the License.
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*
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* You can obtain a copy of the license at
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* trunk/opends/resource/legal-notices/OpenDS.LICENSE
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* or https://OpenDS.dev.java.net/OpenDS.LICENSE.
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* See the License for the specific language governing permissions
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* and limitations under the License.
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*
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* When distributing Covered Code, include this CDDL HEADER in each
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* file and include the License file at
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* trunk/opends/resource/legal-notices/OpenDS.LICENSE. If applicable,
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* add the following below this CDDL HEADER, with the fields enclosed
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* by brackets "[]" replaced with your own identifying information:
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* Portions Copyright [yyyy] [name of copyright owner]
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*
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* CDDL HEADER END
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*
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*
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* Portions Copyright 2006-2007 Sun Microsystems, Inc.
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*/
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package org.opends.server.protocols.internal;
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import org.opends.messages.Message;
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import java.util.Collection;
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import java.util.LinkedList;
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import org.opends.server.admin.std.server.*;
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import org.opends.server.api.ClientConnection;
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import org.opends.server.api.ConnectionHandler;
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import org.opends.server.config.ConfigException;
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import org.opends.server.types.InitializationException;
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import org.opends.server.types.HostPort;
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/**
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* This class defines a Directory Server connection handler that will
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* handle internal "connections".
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*/
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@org.opends.server.types.PublicAPI(
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stability=org.opends.server.types.StabilityLevel.PRIVATE,
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mayInstantiate=false,
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mayExtend=false,
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mayInvoke=false)
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public final class InternalConnectionHandler
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extends ConnectionHandler
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{
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// The singleton instance of this internal connection handler.
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private static InternalConnectionHandler handlerInstance =
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new InternalConnectionHandler();
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// The list of "connections" associated with this connection
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// handler.
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private LinkedList<ClientConnection> connectionList;
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// The list of listeners associated with this connection handler.
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private LinkedList<HostPort> listeners;
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// The name of the protocol for this connection handler.
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private String protocol;
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/**
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* Creates a new instance of this connection handler. All
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* initialization should be done in the
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* <CODE>initializeConnectionHandler</CODE> method.
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*/
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private InternalConnectionHandler()
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{
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super("Internal Connection Handler Thread");
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// Since we can't guarantee that the initializeConnectionHandler
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// method will always be called for this method, we'll do the
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// necessary "initialization" here.
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protocol = "internal";
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connectionList = new LinkedList<ClientConnection>();
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listeners = new LinkedList<HostPort>();
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}
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/**
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* Retrieves the static instance of this internal connection
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* handler.
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*
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* @return The static instance of this internal connection handler.
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*/
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public static InternalConnectionHandler getInstance()
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{
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return handlerInstance;
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}
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/**
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* Initializes this connection handler provider based on the
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* information in the provided connection handler configuration.
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*
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* @param configuration The connection handler configuration that
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* contains the information to use to
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* initialize this connection handler.
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*
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* @throws ConfigException If an unrecoverable problem arises in
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* the process of performing the
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* initialization as a result of the
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* server configuration.
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*
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* @throws InitializationException If a problem occurs during
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* initialization that is not
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* related to the server
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* configuration.
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*/
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public void initializeConnectionHandler(
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ConnectionHandlerCfg configuration)
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throws ConfigException, InitializationException
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{
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// No implementation required.
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}
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/**
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* Closes this connection handler so that it will no longer accept
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* new client connections. It may or may not disconnect existing
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* client connections based on the provided flag. Note, however,
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* that some connection handler implementations may not have any way
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* to continue processing requests from existing connections, in
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* which case they should always be closed regardless of the value
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* of the <CODE>closeConnections</CODE> flag.
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*
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* @param finalizeReason The reason that this connection handler
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* should be finalized.
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* @param closeConnections Indicates whether any established
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* client connections associated with the
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* connection handler should also be
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* closed.
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*/
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@Override()
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public void finalizeConnectionHandler(Message finalizeReason,
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boolean closeConnections)
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{
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// No implementation is required.
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}
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/**
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* Retrieves a name that may be used to refer to this connection
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* handler. Every connection handler instance (even handlers of the
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* same type) must have a unique name.
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*
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* @return A unique name that may be used to refer to this
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* connection handler.
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*/
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@Override()
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public String getConnectionHandlerName()
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{
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return "Internal Connection Handler";
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}
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/**
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* Retrieves the name of the protocol used to communicate with
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* clients. It should take into account any special naming that may
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* be needed to express any security mechanisms or other constraints
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* in place (e.g., "LDAPS" for LDAP over SSL).
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*
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* @return The name of the protocol used to communicate with
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* clients.
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*/
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@Override()
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public String getProtocol()
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{
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return protocol;
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}
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/**
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* Retrieves information about the listener(s) that will be used to
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* accept client connections.
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*
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* @return Information about the listener(s) that will be used to
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* accept client connections, or an empty list if this
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* connection handler does not accept connections from
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* network clients.
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*/
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@Override()
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public Collection<HostPort> getListeners()
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{
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return listeners;
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}
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/**
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* Retrieves the set of active client connections that have been
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* established through this connection handler.
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*
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* @return The set of active client connections that have been
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* established through this connection handler.
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*/
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@Override()
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public Collection<ClientConnection> getClientConnections()
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{
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return connectionList;
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}
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/**
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* Operates in a loop, accepting new connections and ensuring that
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* requests on those connections are handled properly.
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*/
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@Override()
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public void run()
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{
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// No implementation is required since this connection handler
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// won't actually accept connections.
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return;
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}
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/**
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* Retrieves a string representation of this connection handler.
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*
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* @return A string representation of this connection handler.
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*/
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@Override()
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public String toString()
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{
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return "Internal Connection Handler";
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}
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/**
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* Appends a string representation of this connection handler to the
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* provided buffer.
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*
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* @param buffer The buffer to which the information should be
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* appended.
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*/
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@Override()
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public void toString(StringBuilder buffer)
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{
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buffer.append("Internal Connection Handler");
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}
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}
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