/*
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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 legal-notices/CDDLv1_0.txt
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* or http://forgerock.org/license/CDDLv1.0.html.
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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 legal-notices/CDDLv1_0.txt.
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* If applicable, add the following below this CDDL HEADER, with the
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* fields enclosed by brackets "[]" replaced with your own identifying
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* 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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* Copyright 2006-2008 Sun Microsystems, Inc.
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*/
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package org.opends.server.core;
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import org.opends.messages.Message;
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import org.opends.server.loggers.RotationPolicy;
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import org.opends.server.admin.server.ConfigurationAddListener;
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import org.opends.server.admin.server.ConfigurationDeleteListener;
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import org.opends.server.admin.server.ServerManagementContext;
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import org.opends.server.admin.server.ConfigurationChangeListener;
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import org.opends.server.admin.std.server.LogRotationPolicyCfg;
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import org.opends.server.admin.std.server.RootCfg;
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import org.opends.server.admin.std.meta.LogRotationPolicyCfgDefn;
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import org.opends.server.admin.ClassPropertyDefinition;
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import org.opends.server.types.InitializationException;
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import org.opends.server.types.ConfigChangeResult;
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import org.opends.server.types.ResultCode;
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import org.opends.server.types.DebugLogLevel;
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import org.opends.server.config.ConfigException;
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import static org.opends.server.loggers.debug.DebugLogger.*;
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import org.opends.server.loggers.debug.DebugTracer;
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import static org.opends.messages.ConfigMessages.*;
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import static org.opends.server.util.StaticUtils.*;
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import java.util.List;
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import java.util.ArrayList;
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import java.lang.reflect.Method;
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import java.lang.reflect.InvocationTargetException;
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/**
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* This class defines a utility that will be used to manage the set of
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* log rotation policies used in the Directory Server. It will perform the
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* initialization when the server is starting, and then will manage any
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* additions, and removals of policies while the server is running.
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*/
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public class LogRotationPolicyConfigManager implements
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ConfigurationAddListener<LogRotationPolicyCfg>,
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ConfigurationDeleteListener<LogRotationPolicyCfg>,
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ConfigurationChangeListener<LogRotationPolicyCfg>
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{
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/**
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* The tracer object for the debug logger.
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*/
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private static final DebugTracer TRACER = getTracer();
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/**
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* Initializes all the log rotation policies.
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*
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* @throws ConfigException
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* If an unrecoverable problem arises in the process of
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* performing the initialization as a result of the server
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* configuration.
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* @throws InitializationException
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* If a problem occurs during initialization that is not
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* related to the server configuration.
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*/
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public void initializeLogRotationPolicyConfig()
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throws ConfigException, InitializationException
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{
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ServerManagementContext context = ServerManagementContext.getInstance();
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RootCfg root = context.getRootConfiguration();
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root.addLogRotationPolicyAddListener(this);
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root.addLogRotationPolicyDeleteListener(this);
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for(String name : root.listLogRotationPolicies())
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{
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LogRotationPolicyCfg config = root.getLogRotationPolicy(name);
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RotationPolicy rotationPolicy = getRotationPolicy(config);
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DirectoryServer.registerRotationPolicy(config.dn(), rotationPolicy);
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}
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}
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/**
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* {@inheritDoc}
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*/
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public boolean isConfigurationAddAcceptable(
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LogRotationPolicyCfg configuration,
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List<Message> unacceptableReasons)
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{
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return isJavaClassAcceptable(configuration, unacceptableReasons);
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}
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/**
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* {@inheritDoc}
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*/
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public boolean isConfigurationDeleteAcceptable(
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LogRotationPolicyCfg configuration,
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List<Message> unacceptableReasons)
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{
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// TODO: Make sure nothing is using this policy before deleting it.
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return true;
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}
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/**
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* {@inheritDoc}
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*/
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public ConfigChangeResult applyConfigurationAdd(LogRotationPolicyCfg config)
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{
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// Default result code.
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ResultCode resultCode = ResultCode.SUCCESS;
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boolean adminActionRequired = false;
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ArrayList<Message> messages = new ArrayList<Message>();
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try
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{
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RotationPolicy rotationPolicy = getRotationPolicy(config);
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DirectoryServer.registerRotationPolicy(config.dn(), rotationPolicy);
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}
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catch (ConfigException e) {
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if (debugEnabled())
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{
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TRACER.debugCaught(DebugLogLevel.ERROR, e);
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}
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messages.add(e.getMessageObject());
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resultCode = DirectoryServer.getServerErrorResultCode();
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} catch (Exception e) {
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if (debugEnabled())
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{
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TRACER.debugCaught(DebugLogLevel.ERROR, e);
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}
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messages.add(ERR_CONFIG_ROTATION_POLICY_CANNOT_CREATE_POLICY.get(
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String.valueOf(config.dn().toString()),
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stackTraceToSingleLineString(e)));
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resultCode = DirectoryServer.getServerErrorResultCode();
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}
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return new ConfigChangeResult(resultCode, adminActionRequired, messages);
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}
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/**
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* {@inheritDoc}
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*/
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public ConfigChangeResult applyConfigurationDelete(
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LogRotationPolicyCfg config)
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{
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// Default result code.
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ResultCode resultCode = ResultCode.SUCCESS;
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boolean adminActionRequired = false;
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ArrayList<Message> messages = new ArrayList<Message>();
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RotationPolicy policy = DirectoryServer.getRotationPolicy(config.dn());
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if(policy != null)
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{
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DirectoryServer.deregisterRotationPolicy(config.dn());
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}
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else
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{
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// TODO: Add message and check for usage
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resultCode = DirectoryServer.getServerErrorResultCode();
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}
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return new ConfigChangeResult(resultCode, adminActionRequired, messages);
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}
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/**
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* {@inheritDoc}
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*/
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public boolean isConfigurationChangeAcceptable(
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LogRotationPolicyCfg configuration,
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List<Message> unacceptableReasons)
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{
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return isJavaClassAcceptable(configuration, unacceptableReasons);
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}
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/**
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* {@inheritDoc}
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*/
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public ConfigChangeResult applyConfigurationChange(
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LogRotationPolicyCfg configuration)
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{
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// Default result code.
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ResultCode resultCode = ResultCode.SUCCESS;
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boolean adminActionRequired = false;
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ArrayList<Message> messages = new ArrayList<Message>();
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RotationPolicy policy =
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DirectoryServer.getRotationPolicy(configuration.dn());
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String className = configuration.getJavaClass();
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if(!className.equals(policy.getClass().getName()))
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{
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adminActionRequired = true;
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}
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return new ConfigChangeResult(resultCode, adminActionRequired, messages);
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}
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private boolean isJavaClassAcceptable(LogRotationPolicyCfg config,
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List<Message> unacceptableReasons)
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{
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String className = config.getJavaClass();
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LogRotationPolicyCfgDefn d = LogRotationPolicyCfgDefn.getInstance();
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ClassPropertyDefinition pd =
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d.getJavaClassPropertyDefinition();
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// Load the class and cast it to a RotationPolicy.
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Class<? extends RotationPolicy> theClass;
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try {
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theClass = pd.loadClass(className, RotationPolicy.class);
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theClass.newInstance();
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} catch (Exception e) {
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Message message = ERR_CONFIG_ROTATION_POLICY_INVALID_CLASS.get(className,
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config.dn().toString(),
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String.valueOf(e));
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unacceptableReasons.add(message);
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return false;
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}
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// Check that the implementation class implements the correct interface.
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try {
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// Determine the initialization method to use: it must take a
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// single parameter which is the exact type of the configuration
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// object.
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theClass.getMethod("initializeLogRotationPolicy", config
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.configurationClass());
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} catch (Exception e) {
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Message message = ERR_CONFIG_ROTATION_POLICY_INVALID_CLASS.get(className,
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config.dn().toString(),
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String.valueOf(e));
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unacceptableReasons.add(message);
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return false;
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}
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// The class is valid as far as we can tell.
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return true;
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}
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private RotationPolicy getRotationPolicy(LogRotationPolicyCfg config)
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throws ConfigException {
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String className = config.getJavaClass();
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LogRotationPolicyCfgDefn d = LogRotationPolicyCfgDefn.getInstance();
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ClassPropertyDefinition pd =
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d.getJavaClassPropertyDefinition();
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// Load the class and cast it to a RotationPolicy.
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Class<? extends RotationPolicy> theClass;
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RotationPolicy rotationPolicy;
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try {
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theClass = pd.loadClass(className, RotationPolicy.class);
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rotationPolicy = theClass.newInstance();
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// Determine the initialization method to use: it must take a
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// single parameter which is the exact type of the configuration
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// object.
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Method method = theClass.getMethod("initializeLogRotationPolicy", config
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.configurationClass());
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method.invoke(rotationPolicy, config);
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}
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catch (InvocationTargetException ite)
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{
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// Rethrow the exceptions thrown be the invoked method.
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Throwable e = ite.getTargetException();
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Message message = ERR_CONFIG_ROTATION_POLICY_INVALID_CLASS.get(
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className, config.dn().toString(), stackTraceToSingleLineString(e));
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throw new ConfigException(message, e);
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} catch (Exception e) {
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Message message = ERR_CONFIG_ROTATION_POLICY_INVALID_CLASS.get(
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className, config.dn().toString(), String.valueOf(e));
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throw new ConfigException(message, e);
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}
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// The connection handler has been successfully initialized.
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return rotationPolicy;
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}
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}
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