| /* |
| * 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.geode.internal.logging; |
| |
| import java.util.Optional; |
| |
| /** |
| * Listens for state changes to a {@code LoggingSession}. |
| * |
| * <p> |
| * Listeners include the custom Log4J2 Appenders. Appender actions in response to starting a new |
| * session: |
| * <ul> |
| * <li>{@code GeodeConsoleAppender} pauses so that logging stops going to STDOUT. |
| * <li>{@code LogWriterAppender}s (main log and security log) resume so that logging starts |
| * going to the Geode log files. |
| * </ul> |
| * Appender actions in response to stopping a session: |
| * <ul> |
| * <li>{@code GeodeConsoleAppender} resumes so that logging resumes going to STDOUT. |
| * <li>{@code LogWriterAppender}s (main log and security log) pause so that logging stops |
| * going to the Geode log files. |
| * </ul> |
| */ |
| public interface LoggingSessionListener { |
| |
| /** |
| * Notifies listeners of a new logging session with new {@code LogConfig}. |
| */ |
| void createSession(SessionContext sessionContext); |
| |
| /** |
| * Starts the new logging session. |
| */ |
| void startSession(); |
| |
| /** |
| * Stops the logging session. |
| */ |
| void stopSession(); |
| |
| /** |
| * Optional: provide {@link LogFile} to {@link LoggingSession}. |
| */ |
| Optional<LogFile> getLogFile(); |
| } |