/*
* 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/nasutekds/resource/legal-notices/NasuTekDS.LICENSE
* or https://NasuTekDS.dev.java.net/NasuTekDS.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/nasutekds/resource/legal-notices/NasuTekDS.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]
*
* CDDL HEADER END
*
*
* Copyright 2006-2009 Sun Microsystems, Inc.
*/
package org.nasutekds.server.protocols.jmx;
import java.io.IOException;
import org.nasutekds.messages.Message;
import static org.nasutekds.server.loggers.ErrorLogger.logError;
import static org.nasutekds.messages.ProtocolMessages.*;
import static org.nasutekds.server.util.StaticUtils.*;
import java.net.InetSocketAddress;
import java.util.ArrayList;
import java.util.Collection;
import java.util.LinkedHashMap;
import java.util.LinkedList;
import java.util.List;
import org.nasutekds.server.admin.server.ConfigurationChangeListener;
import org.nasutekds.server.admin.std.server.ConnectionHandlerCfg;
import org.nasutekds.server.admin.std.server.JMXConnectionHandlerCfg;
import org.nasutekds.server.api.AlertGenerator;
import org.nasutekds.server.api.ClientConnection;
import org.nasutekds.server.api.ConnectionHandler;
import org.nasutekds.server.api.ServerShutdownListener;
import org.nasutekds.server.config.ConfigException;
import org.nasutekds.server.core.DirectoryServer;
import org.nasutekds.server.types.ConfigChangeResult;
import org.nasutekds.server.types.DN;
import org.nasutekds.server.types.HostPort;
import org.nasutekds.server.types.InitializationException;
import org.nasutekds.server.types.ResultCode;
import org.nasutekds.server.util.StaticUtils;
/**
* This class defines a connection handler that will be used for
* communicating with administrative clients over JMX. The connection
* handler is responsible for accepting new connections, reading
* requests from the clients and parsing them as operations. A single
* request handler should be used.
*/
public final class JmxConnectionHandler extends
ConnectionHandler<JMXConnectionHandlerCfg> implements
ServerShutdownListener, AlertGenerator,
ConfigurationChangeListener<JMXConnectionHandlerCfg> {
/**
* Key that may be placed into a JMX connection environment map to
* provide a custom <code>javax.net.ssl.TrustManager</code> array
* for a connection.
*/
public static final String TRUST_MANAGER_ARRAY_KEY =
"org.nasutekds.server.protocol.jmx.ssl.trust.manager.array";
// The fully-qualified name of this class.
private static final String CLASS_NAME =
"org.nasutekds.server.protocols.jmx.JMXConnectionHandler";
// The list of active client connection.
private LinkedList<ClientConnection> connectionList;
// The current configuration state.
private JMXConnectionHandlerCfg currentConfig;
// The JMX RMI Connector associated with the Connection handler.
private RmiConnector rmiConnector;
// The unique name for this connection handler.
private String connectionHandlerName;
// The protocol used to communicate with clients.
private String protocol;
// The set of listeners for this connection handler.
private LinkedList<HostPort> listeners = new LinkedList<HostPort>();
/**
* Creates a new instance of this JMX connection handler. It must be
* initialized before it may be used.
*/
public JmxConnectionHandler() {
super("JMX Connection Handler Thread");
this.connectionList = new LinkedList<ClientConnection>();
}
/**
* {@inheritDoc}
*/
public ConfigChangeResult applyConfigurationChange(
JMXConnectionHandlerCfg config) {
// Create variables to include in the response.
ResultCode resultCode = ResultCode.SUCCESS;
ArrayList<Message> messages = new ArrayList<Message>();
// Determine whether or not the RMI connection needs restarting.
boolean rmiConnectorRestart = false;
boolean portChanged = false;
if (currentConfig.getListenPort() != config.getListenPort()) {
rmiConnectorRestart = true;
portChanged = true;
}
if (currentConfig.isUseSSL() != config.isUseSSL()) {
rmiConnectorRestart = true;
}
if (((currentConfig.getSSLCertNickname() != null) &&
!currentConfig.getSSLCertNickname().equals(
config.getSSLCertNickname())) ||
((config.getSSLCertNickname() != null) &&
!config.getSSLCertNickname().equals(
currentConfig.getSSLCertNickname()))) {
rmiConnectorRestart = true;
}
// Save the configuration.
currentConfig = config;
// Restart the connector if required.
if (rmiConnectorRestart) {
if (config.isUseSSL()) {
protocol = "JMX+SSL";
} else {
protocol = "JMX";
}
listeners.clear();
listeners.add(new HostPort(config.getListenPort()));
rmiConnector.finalizeConnectionHandler(portChanged);
try
{
rmiConnector.initialize();
}
catch (RuntimeException e)
{
resultCode = DirectoryServer.getServerErrorResultCode();
messages.add(Message.raw(e.getMessage()));
}
}
// If the port number has changed then update the JMX port information
// stored in the system properties.
if (portChanged)
{
String key = protocol + "_port";
String value = String.valueOf(config.getListenPort());
System.clearProperty(key);
System.setProperty(key, value);
}
// Return configuration result.
return new ConfigChangeResult(resultCode, false, messages);
}
/**
* {@inheritDoc}
*/
@Override
public void finalizeConnectionHandler(Message finalizeReason) {
// Make sure that we don't get notified of any more changes.
currentConfig.removeJMXChangeListener(this);
// We should also close the RMI registry.
rmiConnector.finalizeConnectionHandler(true);
}
/**
* Retrieves information about the set of alerts that this generator
* may produce. The map returned should be between the notification
* type for a particular notification and the human-readable
* description for that notification. This alert generator must not
* generate any alerts with types that are not contained in this
* list.
*
* @return Information about the set of alerts that this generator
* may produce.
*/
public LinkedHashMap<String, String> getAlerts() {
LinkedHashMap<String, String> alerts = new LinkedHashMap<String, String>();
return alerts;
}
/**
* Retrieves the fully-qualified name of the Java class for this
* alert generator implementation.
*
* @return The fully-qualified name of the Java class for this alert
* generator implementation.
*/
public String getClassName() {
return CLASS_NAME;
}
/**
* 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;
}
/**
* Retrieves the DN of the configuration entry with which this alert
* generator is associated.
*
* @return The DN of the configuration entry with which this alert
* generator is associated.
*/
@Override
public DN getComponentEntryDN() {
return currentConfig.dn();
}
/**
* Retrieves the DN of the key manager provider that should be used
* for operations associated with this connection handler which need
* access to a key manager.
*
* @return The DN of the key manager provider that should be used
* for operations associated with this connection handler
* which need access to a key manager, or {@code null} if no
* key manager provider has been configured for this
* connection handler.
*/
public DN getKeyManagerProviderDN() {
return currentConfig.getKeyManagerProviderDN();
}
/**
* Get the JMX connection handler's listen port.
*
* @return Returns the JMX connection handler's listen port.
*/
public int getListenPort() {
return currentConfig.getListenPort();
}
/**
* Get the JMX connection handler's RMI connector.
*
* @return Returns the JMX connection handler's RMI connector.
*/
public RmiConnector getRMIConnector() {
return rmiConnector;
}
/**
* {@inheritDoc}
*/
public String getShutdownListenerName() {
return connectionHandlerName;
}
/**
* Retrieves the nickname of the server certificate that should be
* used in conjunction with this JMX connection handler.
*
* @return The nickname of the server certificate that should be
* used in conjunction with this JMX connection handler.
*/
public String getSSLServerCertNickname() {
return currentConfig.getSSLCertNickname();
}
/**
* {@inheritDoc}
*/
@Override
public void initializeConnectionHandler(JMXConnectionHandlerCfg config)
throws ConfigException, InitializationException
{
// Configuration is ok.
currentConfig = config;
// Attempt to bind to the listen port to verify whether the connection
// handler will be able to start.
try
{
if (StaticUtils.isAddressInUse(
new InetSocketAddress(config.getListenPort()).getAddress(),
config.getListenPort(), true)) {
throw new IOException(
ERR_CONNHANDLER_ADDRESS_INUSE.get().toString());
}
}
catch (Exception e)
{
Message message = ERR_JMX_CONNHANDLER_CANNOT_BIND.
get(String.valueOf(config.dn()), config.getListenPort(),
getExceptionMessage(e));
logError(message);
throw new InitializationException(message);
}
if (config.isUseSSL()) {
protocol = "JMX+SSL";
} else {
protocol = "JMX";
}
listeners.clear();
listeners.add(new HostPort("0.0.0.0", config.getListenPort()));
connectionHandlerName = "JMX Connection Handler " + config.getListenPort();
// Create a system property to store the JMX port the server is
// listening to. This information can be displayed with jinfo.
System.setProperty(
protocol + "_port", String.valueOf(config.getListenPort()));
// Create the associated RMI Connector.
rmiConnector = new RmiConnector(DirectoryServer.getJMXMBeanServer(), this);
// Register this as a change listener.
config.addJMXChangeListener(this);
}
/**
* {@inheritDoc}
*/
@Override
public String getConnectionHandlerName() {
return connectionHandlerName;
}
/**
* {@inheritDoc}
*/
@Override
public String getProtocol() {
return protocol;
}
/**
* {@inheritDoc}
*/
@Override
public Collection<HostPort> getListeners() {
return listeners;
}
/**
* {@inheritDoc}
*/
@Override()
public boolean isConfigurationAcceptable(ConnectionHandlerCfg configuration,
List<Message> unacceptableReasons)
{
JMXConnectionHandlerCfg config = (JMXConnectionHandlerCfg) configuration;
if ((currentConfig == null) ||
(!currentConfig.isEnabled() && config.isEnabled()) ||
(currentConfig.getListenPort() != config.getListenPort())) {
// Attempt to bind to the listen port to verify whether the connection
// handler will be able to start.
try {
if (StaticUtils.isAddressInUse(
new InetSocketAddress(config.getListenPort()).getAddress(),
config.getListenPort(), true)) {
throw new IOException(
ERR_CONNHANDLER_ADDRESS_INUSE.get().toString());
}
} catch (Exception e) {
Message message = ERR_JMX_CONNHANDLER_CANNOT_BIND.get(
String.valueOf(config.dn()), config.getListenPort(),
getExceptionMessage(e));
unacceptableReasons.add(message);
return false;
}
}
return isConfigurationChangeAcceptable(config, unacceptableReasons);
}
/**
* {@inheritDoc}
*/
public boolean isConfigurationChangeAcceptable(
JMXConnectionHandlerCfg config,
List<Message> unacceptableReasons) {
// All validation is performed by the admin framework.
return true;
}
/**
* Determines whether or not clients are allowed to connect over JMX
* using SSL.
*
* @return Returns <code>true</code> if clients are allowed to
* connect over JMX using SSL.
*/
public boolean isUseSSL() {
return currentConfig.isUseSSL();
}
/**
* {@inheritDoc}
*/
public void processServerShutdown(Message reason) {
// We should also close the RMI registry.
rmiConnector.finalizeConnectionHandler(true);
}
/**
* Registers a client connection with this JMX connection handler.
*
* @param connection
* The client connection.
*/
public void registerClientConnection(ClientConnection connection) {
connectionList.add(connection);
}
/**
* {@inheritDoc}
*/
@Override
public void run() {
try
{
rmiConnector.initialize();
}
catch (RuntimeException e)
{
}
}
/**
* {@inheritDoc}
*/
@Override
public void toString(StringBuilder buffer) {
buffer.append(connectionHandlerName);
}
}