| /* |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you under the Apache License, Version 2.0 (the |
| * "License"); you may not use this file except in compliance |
| * with the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, |
| * software distributed under the License is distributed on an |
| * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY |
| * KIND, either express or implied. See the License for the |
| * specific language governing permissions and limitations |
| * under the License. |
| */ |
| package org.apache.ace.agent; |
| |
| import java.util.Formatter; |
| |
| import org.osgi.service.log.LogService; |
| |
| import org.osgi.annotation.versioning.ConsumerType; |
| |
| /** |
| * Agent context delegate interface that is responsible for logging. |
| */ |
| @ConsumerType |
| public interface LoggingHandler { |
| |
| enum Levels { |
| /** Lowest log level. Used to log debugging/internal information. */ |
| DEBUG(LogService.LOG_DEBUG), |
| /** Used to log useful information. */ |
| INFO(LogService.LOG_INFO), |
| /** Used to report warnings. */ |
| WARNING(LogService.LOG_WARNING), |
| /** Highest log level, used to report errors. */ |
| ERROR(LogService.LOG_ERROR); |
| |
| private final int m_logLevel; |
| |
| private Levels(int logLevel) { |
| m_logLevel = logLevel; |
| } |
| |
| /** |
| * @return the OSGi LogService log level corresponding to this log level. |
| */ |
| public int getLogLevel() { |
| return m_logLevel; |
| } |
| } |
| |
| /** |
| * Log an debug message. If <code>args</code> are provided the message will be processed as a format using the |
| * standard {@link Formatter}. |
| * |
| * @param component |
| * The component identifier, not <code>null</code> |
| * @param message |
| * The log message or format, not <code>null</code> |
| * @param cause |
| * The cause, may be <code>null</code> |
| * @param args |
| * The optional formatter arguments |
| */ |
| void logDebug(String component, String message, Throwable exception, Object... args); |
| |
| /** |
| * Log an info message. If <code>args</code> are provided the message will be processed as a format using the |
| * standard {@link Formatter}. |
| * |
| * @param component |
| * The component identifier, not <code>null</code> |
| * @param message |
| * The log message or format, not <code>null</code> |
| * @param cause |
| * The cause, may be <code>null</code> |
| * @param args |
| * The optional formatter arguments |
| */ |
| void logInfo(String component, String message, Throwable exception, Object... args); |
| |
| /** |
| * Log an warning message. If <code>args</code> are provided the message will be processed as a format using the |
| * standard {@link Formatter}. |
| * |
| * @param component |
| * The component identifier, not <code>null</code> |
| * @param message |
| * The log message or format, not <code>null</code> |
| * @param cause |
| * The cause, may be <code>null</code> |
| * @param args |
| * The optional formatter arguments |
| */ |
| void logWarning(String component, String message, Throwable exception, Object... args); |
| |
| /** |
| * Log an error message. If <code>args</code> are provided the message will be processed as a format using the |
| * standard {@link Formatter}. |
| * |
| * @param component |
| * The component identifier, not <code>null</code> |
| * @param message |
| * The log message or format, not <code>null</code> |
| * @param cause |
| * The cause, may be <code>null</code> |
| * @param args |
| * The optional formatter arguments |
| */ |
| void logError(String component, String message, Throwable exception, Object... args); |
| } |