| New file |
| | |
| | | /* |
| | | * 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] |
| | | * |
| | | * CDDL HEADER END |
| | | * |
| | | * |
| | | * Portions Copyright 2006-2007 Sun Microsystems, Inc. |
| | | */ |
| | | package org.opends.server.core; |
| | | |
| | | |
| | | |
| | | import java.lang.reflect.Method; |
| | | import java.util.ArrayList; |
| | | import java.util.Iterator; |
| | | import java.util.List; |
| | | import java.util.concurrent.ConcurrentHashMap; |
| | | |
| | | import org.opends.server.admin.ClassPropertyDefinition; |
| | | import org.opends.server.admin.server.ConfigurationAddListener; |
| | | import org.opends.server.admin.server.ConfigurationChangeListener; |
| | | import org.opends.server.admin.server.ConfigurationDeleteListener; |
| | | import org.opends.server.admin.std.meta.AlertHandlerCfgDefn; |
| | | import org.opends.server.admin.std.server.AlertHandlerCfg; |
| | | import org.opends.server.admin.std.server.RootCfg; |
| | | import org.opends.server.admin.server.ServerManagementContext; |
| | | import org.opends.server.api.AlertHandler; |
| | | import org.opends.server.config.ConfigException; |
| | | import org.opends.server.types.ConfigChangeResult; |
| | | import org.opends.server.types.DN; |
| | | import org.opends.server.types.ErrorLogCategory; |
| | | import org.opends.server.types.ErrorLogSeverity; |
| | | import org.opends.server.types.InitializationException; |
| | | import org.opends.server.types.ResultCode; |
| | | |
| | | import static org.opends.server.loggers.ErrorLogger.*; |
| | | import static org.opends.server.messages.ConfigMessages.*; |
| | | import static org.opends.server.messages.MessageHandler.*; |
| | | import static org.opends.server.util.StaticUtils.*; |
| | | |
| | | |
| | | |
| | | /** |
| | | * This class defines a utility that will be used to manage the set of alert |
| | | * handlers defined in the Directory Server. It will initialize the alert |
| | | * handlers when the server starts, and then will manage any additions, |
| | | * removals, or modifications to any alert handlers while the server is running. |
| | | */ |
| | | public class AlertHandlerConfigManager |
| | | implements ConfigurationChangeListener<AlertHandlerCfg>, |
| | | ConfigurationAddListener<AlertHandlerCfg>, |
| | | ConfigurationDeleteListener<AlertHandlerCfg> |
| | | |
| | | { |
| | | // A mapping between the DNs of the config entries and the associated alert |
| | | // handlers. |
| | | private ConcurrentHashMap<DN,AlertHandler> alertHandlers; |
| | | |
| | | |
| | | |
| | | /** |
| | | * Creates a new instance of this alert handler config manager. |
| | | */ |
| | | public AlertHandlerConfigManager() |
| | | { |
| | | alertHandlers = new ConcurrentHashMap<DN,AlertHandler>(); |
| | | } |
| | | |
| | | |
| | | |
| | | /** |
| | | * Initializes all alert handlers currently defined in the Directory Server |
| | | * configuration. This should only be called at Directory Server startup. |
| | | * |
| | | * @throws ConfigException If a configuration problem causes the alert |
| | | * handler initialization process to fail. |
| | | * |
| | | * @throws InitializationException If a problem occurs while initializing |
| | | * the alert handlers that is not related to |
| | | * the server configuration. |
| | | */ |
| | | public void initializeAlertHandlers() |
| | | throws ConfigException, InitializationException |
| | | { |
| | | // Get the root configuration object. |
| | | ServerManagementContext managementContext = |
| | | ServerManagementContext.getInstance(); |
| | | RootCfg rootConfiguration = managementContext.getRootConfiguration(); |
| | | |
| | | |
| | | // Register as an add and delete listener with the root configuration so we |
| | | // can be notified if any alert handler entries are added or removed. |
| | | rootConfiguration.addAlertHandlerAddListener(this); |
| | | rootConfiguration.addAlertHandlerDeleteListener(this); |
| | | |
| | | |
| | | //Initialize the existing alert handlers. |
| | | for (String name : rootConfiguration.listAlertHandlers()) |
| | | { |
| | | AlertHandlerCfg configuration = rootConfiguration.getAlertHandler(name); |
| | | configuration.addChangeListener(this); |
| | | |
| | | if (configuration.isEnabled()) |
| | | { |
| | | String className = configuration.getAlertHandlerClass(); |
| | | try |
| | | { |
| | | AlertHandler handler = loadHandler(className, configuration, true); |
| | | alertHandlers.put(configuration.dn(), handler); |
| | | DirectoryServer.registerAlertHandler(handler); |
| | | } |
| | | catch (InitializationException ie) |
| | | { |
| | | logError(ErrorLogCategory.CONFIGURATION, |
| | | ErrorLogSeverity.SEVERE_ERROR, |
| | | ie.getMessage(), ie.getMessageID()); |
| | | continue; |
| | | } |
| | | } |
| | | } |
| | | } |
| | | |
| | | |
| | | |
| | | /** |
| | | * {@inheritDoc} |
| | | */ |
| | | public boolean isConfigurationAddAcceptable(AlertHandlerCfg configuration, |
| | | List<String> unacceptableReasons) |
| | | { |
| | | if (configuration.isEnabled()) |
| | | { |
| | | // Get the name of the class and make sure we can instantiate it as an |
| | | // alert handler. |
| | | String className = configuration.getAlertHandlerClass(); |
| | | try |
| | | { |
| | | loadHandler(className, configuration, false); |
| | | } |
| | | catch (InitializationException ie) |
| | | { |
| | | unacceptableReasons.add(ie.getMessage()); |
| | | return false; |
| | | } |
| | | } |
| | | |
| | | // If we've gotten here, then it's fine. |
| | | return true; |
| | | } |
| | | |
| | | |
| | | |
| | | /** |
| | | * {@inheritDoc} |
| | | */ |
| | | public ConfigChangeResult applyConfigurationAdd(AlertHandlerCfg configuration) |
| | | { |
| | | ResultCode resultCode = ResultCode.SUCCESS; |
| | | boolean adminActionRequired = false; |
| | | ArrayList<String> messages = new ArrayList<String>(); |
| | | |
| | | configuration.addChangeListener(this); |
| | | |
| | | if (! configuration.isEnabled()) |
| | | { |
| | | return new ConfigChangeResult(resultCode, adminActionRequired, messages); |
| | | } |
| | | |
| | | AlertHandler alertHandler = null; |
| | | |
| | | // Get the name of the class and make sure we can instantiate it as an alert |
| | | // handler. |
| | | String className = configuration.getAlertHandlerClass(); |
| | | try |
| | | { |
| | | alertHandler = loadHandler(className, configuration, true); |
| | | } |
| | | catch (InitializationException ie) |
| | | { |
| | | if (resultCode == ResultCode.SUCCESS) |
| | | { |
| | | resultCode = DirectoryServer.getServerErrorResultCode(); |
| | | } |
| | | |
| | | messages.add(ie.getMessage()); |
| | | } |
| | | |
| | | if (resultCode == ResultCode.SUCCESS) |
| | | { |
| | | alertHandlers.put(configuration.dn(), alertHandler); |
| | | DirectoryServer.registerAlertHandler(alertHandler); |
| | | } |
| | | |
| | | return new ConfigChangeResult(resultCode, adminActionRequired, messages); |
| | | } |
| | | |
| | | |
| | | |
| | | /** |
| | | * {@inheritDoc} |
| | | */ |
| | | public boolean isConfigurationDeleteAcceptable( |
| | | AlertHandlerCfg configuration, |
| | | List<String> unacceptableReasons) |
| | | { |
| | | // FIXME -- We should try to perform some check to determine whether the |
| | | // alert handler is in use. |
| | | return true; |
| | | } |
| | | |
| | | |
| | | |
| | | /** |
| | | * {@inheritDoc} |
| | | */ |
| | | public ConfigChangeResult applyConfigurationDelete( |
| | | AlertHandlerCfg configuration) |
| | | { |
| | | ResultCode resultCode = ResultCode.SUCCESS; |
| | | boolean adminActionRequired = false; |
| | | ArrayList<String> messages = new ArrayList<String>(); |
| | | |
| | | AlertHandler alertHandler = alertHandlers.remove(configuration.dn()); |
| | | if (alertHandler != null) |
| | | { |
| | | DirectoryServer.deregisterAlertHandler(alertHandler); |
| | | alertHandler.finalizeAlertHandler(); |
| | | } |
| | | |
| | | return new ConfigChangeResult(resultCode, adminActionRequired, messages); |
| | | } |
| | | |
| | | |
| | | |
| | | /** |
| | | * {@inheritDoc} |
| | | */ |
| | | public boolean isConfigurationChangeAcceptable(AlertHandlerCfg configuration, |
| | | List<String> unacceptableReasons) |
| | | { |
| | | if (configuration.isEnabled()) |
| | | { |
| | | // Get the name of the class and make sure we can instantiate it as an |
| | | // alert handler. |
| | | String className = configuration.getAlertHandlerClass(); |
| | | try |
| | | { |
| | | loadHandler(className, configuration, false); |
| | | } |
| | | catch (InitializationException ie) |
| | | { |
| | | unacceptableReasons.add(ie.getMessage()); |
| | | return false; |
| | | } |
| | | } |
| | | |
| | | // If we've gotten here, then it's fine. |
| | | return true; |
| | | } |
| | | |
| | | |
| | | |
| | | /** |
| | | * {@inheritDoc} |
| | | */ |
| | | public ConfigChangeResult applyConfigurationChange( |
| | | AlertHandlerCfg configuration) |
| | | { |
| | | ResultCode resultCode = ResultCode.SUCCESS; |
| | | boolean adminActionRequired = false; |
| | | ArrayList<String> messages = new ArrayList<String>(); |
| | | |
| | | |
| | | // Get the existing alert handler if it's already enabled. |
| | | AlertHandler existingHandler = alertHandlers.get(configuration.dn()); |
| | | |
| | | |
| | | // If the new configuration has the handler disabled, then disable it if it |
| | | // is enabled, or do nothing if it's already disabled. |
| | | if (! configuration.isEnabled()) |
| | | { |
| | | if (existingHandler != null) |
| | | { |
| | | DirectoryServer.deregisterAlertHandler(existingHandler); |
| | | |
| | | AlertHandler alertHandler = alertHandlers.remove(configuration.dn()); |
| | | if (alertHandler != null) |
| | | { |
| | | alertHandler.finalizeAlertHandler(); |
| | | } |
| | | } |
| | | |
| | | return new ConfigChangeResult(resultCode, adminActionRequired, messages); |
| | | } |
| | | |
| | | |
| | | // Get the class for the alert handler. If the handler is already enabled, |
| | | // then we shouldn't do anything with it although if the class has changed |
| | | // then we'll at least need to indicate that administrative action is |
| | | // required. If the handler is disabled, then instantiate the class and |
| | | // initialize and register it as an alert handler. |
| | | String className = configuration.getAlertHandlerClass(); |
| | | if (existingHandler != null) |
| | | { |
| | | if (! className.equals(existingHandler.getClass().getName())) |
| | | { |
| | | adminActionRequired = true; |
| | | } |
| | | |
| | | return new ConfigChangeResult(resultCode, adminActionRequired, messages); |
| | | } |
| | | |
| | | AlertHandler alertHandler = null; |
| | | try |
| | | { |
| | | alertHandler = loadHandler(className, configuration, true); |
| | | } |
| | | catch (InitializationException ie) |
| | | { |
| | | if (resultCode == ResultCode.SUCCESS) |
| | | { |
| | | resultCode = DirectoryServer.getServerErrorResultCode(); |
| | | } |
| | | |
| | | messages.add(ie.getMessage()); |
| | | } |
| | | |
| | | if (resultCode == ResultCode.SUCCESS) |
| | | { |
| | | alertHandlers.put(configuration.dn(), alertHandler); |
| | | DirectoryServer.registerAlertHandler(alertHandler); |
| | | } |
| | | |
| | | return new ConfigChangeResult(resultCode, adminActionRequired, messages); |
| | | } |
| | | |
| | | |
| | | |
| | | /** |
| | | * Loads the specified class, instantiates it as an alert handler, and |
| | | * optionally initializes that instance. |
| | | * |
| | | * @param className The fully-qualified name of the alert handler class |
| | | * to load, instantiate, and initialize. |
| | | * @param configuration The configuration to use to initialize the alert |
| | | * handler. It must not be {@code null}. |
| | | * @param initialize Indicates whether the alert handler instance should |
| | | * be initialized. |
| | | * |
| | | * @return The possibly initialized alert handler. |
| | | * |
| | | * @throws InitializationException If a problem occurred while attempting to |
| | | * initialize the alert handler. |
| | | */ |
| | | private AlertHandler loadHandler(String className, |
| | | AlertHandlerCfg configuration, |
| | | boolean initialize) |
| | | throws InitializationException |
| | | { |
| | | try |
| | | { |
| | | AlertHandlerCfgDefn definition = AlertHandlerCfgDefn.getInstance(); |
| | | ClassPropertyDefinition propertyDefinition = |
| | | definition.getAlertHandlerClassPropertyDefinition(); |
| | | Class<? extends AlertHandler> handlerClass = |
| | | propertyDefinition.loadClass(className, AlertHandler.class); |
| | | AlertHandler handler = handlerClass.newInstance(); |
| | | |
| | | if (initialize) |
| | | { |
| | | Method method = |
| | | handler.getClass().getMethod("initializeAlertHandler", |
| | | configuration.definition().getServerConfigurationClass()); |
| | | method.invoke(handler, configuration); |
| | | } |
| | | else |
| | | { |
| | | Method method = |
| | | handler.getClass().getMethod("isConfigurationAcceptable", |
| | | AlertHandlerCfg.class, List.class); |
| | | |
| | | List<String> unacceptableReasons = new ArrayList<String>(); |
| | | Boolean acceptable = (Boolean) method.invoke(handler, configuration, |
| | | unacceptableReasons); |
| | | if (! acceptable) |
| | | { |
| | | StringBuilder buffer = new StringBuilder(); |
| | | if (! unacceptableReasons.isEmpty()) |
| | | { |
| | | Iterator<String> iterator = unacceptableReasons.iterator(); |
| | | buffer.append(iterator.next()); |
| | | while (iterator.hasNext()) |
| | | { |
| | | buffer.append(". "); |
| | | buffer.append(iterator.next()); |
| | | } |
| | | } |
| | | |
| | | int msgID = MSGID_CONFIG_ALERTHANDLER_CONFIG_NOT_ACCEPTABLE; |
| | | String message = getMessage(msgID, String.valueOf(configuration.dn()), |
| | | buffer.toString()); |
| | | throw new InitializationException(msgID, message); |
| | | } |
| | | } |
| | | |
| | | return handler; |
| | | } |
| | | catch (Exception e) |
| | | { |
| | | int msgID = MSGID_CONFIG_ALERTHANDLER_INITIALIZATION_FAILED; |
| | | String message = getMessage(msgID, className, |
| | | String.valueOf(configuration.dn()), |
| | | stackTraceToSingleLineString(e)); |
| | | throw new InitializationException(msgID, message, e); |
| | | } |
| | | } |
| | | } |
| | | |