/*
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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 2009 Sun Microsystems, Inc.
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* Portions Copyright 2012-2014 ForgeRock AS.
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*/
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package org.opends.server.api;
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import java.util.HashMap;
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import java.util.List;
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import java.util.Map;
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import java.util.TreeMap;
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import org.forgerock.i18n.LocalizableMessage;
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import org.opends.server.admin.std.server.DebugLogPublisherCfg;
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import org.opends.server.loggers.debug.TraceSettings;
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import org.opends.server.types.DebugLogLevel;
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/**
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* This class defines the set of methods and structures that must be
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* implemented for a Directory Server debug log publisher.
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*
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* @param <T> The type of debug log publisher configuration handled
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* by this log publisher implementation.
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*/
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@org.opends.server.types.PublicAPI(
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stability=org.opends.server.types.StabilityLevel.VOLATILE,
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mayInstantiate=false,
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mayExtend=true,
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mayInvoke=false)
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public abstract class DebugLogPublisher<T extends DebugLogPublisherCfg>
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implements LogPublisher<T>
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{
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//The default global settings key.
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private static final String GLOBAL= "_global";
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//The map of class names to their trace settings.
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private Map<String,TraceSettings> classTraceSettings;
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//The map of class names to their method trace settings.
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private Map<String,Map<String,TraceSettings>> methodTraceSettings;
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/**
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* Construct a default configuration where the global scope will
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* only log at the ERROR level.
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*/
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protected DebugLogPublisher()
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{
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classTraceSettings = null;
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methodTraceSettings = null;
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//Set the global settings so that nothing is logged.
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addTraceSettings(null, new TraceSettings(DebugLogLevel.DISABLED));
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}
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/** {@inheritDoc} */
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@Override
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public boolean isConfigurationAcceptable(T configuration,
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List<LocalizableMessage> unacceptableReasons)
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{
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// This default implementation does not perform any special
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// validation. It should be overridden by debug log publisher
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// implementations that wish to perform more detailed validation.
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return true;
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}
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/**
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* Gets the method trace levels for a specified class.
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*
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* @param className The fully-qualified name of the class for
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* which to get the trace levels.
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*
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*@return An unmodifiable map of trace levels keyed by method name,
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* or {@code null} if no method-level tracing is configured
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* for the scope.
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*/
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public final Map<String,TraceSettings> getMethodSettings(
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String className)
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{
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if(methodTraceSettings == null)
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{
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return null;
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}
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else
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{
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return methodTraceSettings.get(className);
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}
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}
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/**
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* Get the trace settings for a specified class.
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*
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* @param className The fully-qualified name of the class for
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* which to get the trace levels.
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*
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* @return The current trace settings for the class.
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*/
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public final TraceSettings getClassSettings(String className)
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{
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TraceSettings settings = TraceSettings.DISABLED;
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// If we're not enabled, trace level is DISABLED.
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if (classTraceSettings != null) {
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// Find most specific trace setting which covers this
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// fully qualified class name
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// Search up the hierarchy for a match.
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String searchName= className;
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Object value= null;
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value= classTraceSettings.get(searchName);
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while (value == null && searchName != null) {
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int clipPoint= searchName.lastIndexOf('$');
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if (clipPoint == -1) clipPoint= searchName.lastIndexOf('.');
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if (clipPoint != -1) {
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searchName= searchName.substring(0, clipPoint);
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value= classTraceSettings.get(searchName);
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}
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else {
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searchName= null;
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}
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}
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// Use global settings, if nothing more specific was found.
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if (value == null) value= classTraceSettings.get(GLOBAL);
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if (value != null) {
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settings= (TraceSettings)value;
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}
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}
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return settings;
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}
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/**
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* Adds a trace settings to the current set for a specified scope.
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* If a scope is not specified, the settings will be set for the
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* global scope. The global scope settings are used when no other
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* scope matches.
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*
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* @param scope The scope for which to set the trace settings.
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* This should be a fully-qualified class name, or
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* {@code null} to set the trace settings for the
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* global scope.
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* @param settings The trace settings for the specified scope.
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*/
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public final void addTraceSettings(String scope,
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TraceSettings settings)
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{
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if (scope == null) {
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setClassSettings(GLOBAL, settings);
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}
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else {
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int methodPt= scope.lastIndexOf('#');
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if (methodPt != -1) {
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String methodName= scope.substring(methodPt+1);
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scope= scope.substring(0, methodPt);
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setMethodSettings(scope, methodName, settings);
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}
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else {
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setClassSettings(scope, settings);
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}
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}
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}
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/**
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* Determine whether a trace setting is already defined for a
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* particular scope.
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*
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* @param scope The scope for which to make the determination.
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* This should be a fully-qualified class name, or
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* {@code null} to make the determination for the
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* global scope.
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*
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* @return The trace settings for the specified scope, or
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* {@code null} if no trace setting is defined for that
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* scope.
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*/
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public final TraceSettings getTraceSettings(String scope)
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{
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if (scope == null) {
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if(classTraceSettings != null)
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{
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return classTraceSettings.get(GLOBAL);
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}
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return null;
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}
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else {
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int methodPt= scope.lastIndexOf('#');
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if (methodPt != -1) {
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String methodName= scope.substring(methodPt+1);
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scope= scope.substring(0, methodPt);
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if(methodTraceSettings != null)
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{
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Map<String, TraceSettings> methodLevels =
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methodTraceSettings.get(scope);
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if(methodLevels != null)
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{
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return methodLevels.get(methodName);
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}
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return null;
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}
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return null;
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}
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else {
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if(classTraceSettings != null)
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{
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return classTraceSettings.get(scope);
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}
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return null;
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}
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}
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}
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/**
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* Remove a trace setting by scope.
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*
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* @param scope The scope for which to remove the trace setting.
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* This should be a fully-qualified class name, or
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* {@code null} to remove the trace setting for the
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* global scope.
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*
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* @return The trace settings for the specified scope, or
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* {@code null} if no trace setting is defined for that
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* scope.
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*/
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public final TraceSettings removeTraceSettings(String scope)
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{
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TraceSettings removedSettings = null;
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if (scope == null) {
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if(classTraceSettings != null)
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{
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removedSettings = classTraceSettings.remove(GLOBAL);
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}
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}
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else {
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int methodPt= scope.lastIndexOf('#');
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if (methodPt != -1) {
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String methodName= scope.substring(methodPt+1);
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scope= scope.substring(0, methodPt);
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if(methodTraceSettings != null)
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{
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Map<String, TraceSettings> methodLevels =
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methodTraceSettings.get(scope);
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if(methodLevels != null)
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{
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removedSettings = methodLevels.remove(methodName);
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if(methodLevels.isEmpty())
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{
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methodTraceSettings.remove(scope);
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}
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}
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}
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}
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else {
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if(classTraceSettings != null)
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{
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removedSettings = classTraceSettings.remove(scope);
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}
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}
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}
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return removedSettings;
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}
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/**
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* Set the trace settings for a class.
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*
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* @param className The class name.
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* @param settings The trace settings for the class.
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*/
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private synchronized final void setClassSettings(String className,
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TraceSettings settings)
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{
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if(classTraceSettings == null) classTraceSettings =
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new HashMap<String, TraceSettings>();
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classTraceSettings.put(className, settings);
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}
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/**
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* Set the method settings for a particular method in a class.
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*
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* @param className The class name.
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* @param methodName The method name.
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* @param settings The trace settings for the method.
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*/
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private synchronized final void setMethodSettings(String className,
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String methodName,
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TraceSettings settings)
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{
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if (methodTraceSettings == null) methodTraceSettings =
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new HashMap<String, Map<String, TraceSettings>>();
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Map<String, TraceSettings> methodLevels=
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methodTraceSettings.get(className);
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if (methodLevels == null) {
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methodLevels= new TreeMap<String, TraceSettings>();
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methodTraceSettings.put(className, methodLevels);
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}
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methodLevels.put(methodName, settings);
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}
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/**
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* Log an arbitrary event in a method.
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* @param settings The current trace settings in effect.
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* @param signature The method signature.
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* @param sourceLocation The location of the method in the source.
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* @param msg The message to be logged.
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* @param stackTrace The stack trace at the time the message
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* is logged or null if its not available.
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*/
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public abstract void traceMessage(TraceSettings settings,
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String signature,
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String sourceLocation,
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String msg,
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StackTraceElement[] stackTrace);
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/**
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* Log a caught exception in a method.
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* @param settings The current trace settings in effect.
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* @param signature The method signature.
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* @param sourceLocation The location of the method in the source.
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* @param msg TODO
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* @param ex The exception that was caught.
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* @param stackTrace The stack trace at the time the exception
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* is caught or null if its not available.
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*/
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public abstract void traceCaught(TraceSettings settings,
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String signature,
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String sourceLocation,
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String msg,
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Throwable ex, StackTraceElement[] stackTrace);
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}
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