| /* |
| * 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.logging.internal; |
| |
| import java.util.LinkedHashSet; |
| import java.util.Optional; |
| import java.util.Set; |
| |
| import org.apache.geode.annotations.VisibleForTesting; |
| import org.apache.geode.annotations.internal.MakeNotStatic; |
| import org.apache.geode.logging.internal.spi.LogFile; |
| import org.apache.geode.logging.internal.spi.LoggingSessionListener; |
| import org.apache.geode.logging.internal.spi.LoggingSessionRegistry; |
| import org.apache.geode.logging.internal.spi.SessionContext; |
| |
| public class LoggingSessionRegistryProvider |
| implements LoggingSessionRegistry, LoggingSessionNotifier { |
| |
| @MakeNotStatic |
| private static final LoggingSessionRegistryProvider INSTANCE = |
| new LoggingSessionRegistryProvider(); |
| |
| public static LoggingSessionRegistryProvider get() { |
| return INSTANCE; |
| } |
| |
| private final Set<LoggingSessionListener> listeners; |
| |
| @VisibleForTesting |
| LoggingSessionRegistryProvider() { |
| listeners = new LinkedHashSet<>(); |
| } |
| |
| /** |
| * Adds the {@code LoggingSessionListener}. |
| */ |
| public void addLoggingSessionListener(final LoggingSessionListener listener) { |
| listeners.add(listener); |
| } |
| |
| /** |
| * Removes the {@code LoggingSessionListener}. |
| */ |
| public void removeLoggingSessionListener(final LoggingSessionListener listener) { |
| listeners.remove(listener); |
| } |
| |
| /** |
| * Removes all currently registered {@code LoggingSessionListener}s. |
| */ |
| public void clear() { |
| listeners.clear(); |
| } |
| |
| /** |
| * Provides {@code createSession} notification to all registered listeners. |
| */ |
| public void createSession(final SessionContext sessionContext) { |
| for (LoggingSessionListener listener : listeners) { |
| listener.createSession(sessionContext); |
| } |
| } |
| |
| /** |
| * Provides {@code startSession} notification to all registered listeners. |
| */ |
| public void startSession() { |
| for (LoggingSessionListener listener : listeners) { |
| listener.startSession(); |
| } |
| } |
| |
| /** |
| * Provides {@code stopSession} notification to all registered listeners. |
| */ |
| public void stopSession() { |
| for (LoggingSessionListener listener : listeners) { |
| listener.stopSession(); |
| } |
| } |
| |
| /** |
| * Returns the system {@link LogFile} from any {@link LoggingSessionListener} that offers it. |
| */ |
| public Optional<LogFile> getLogFile() { |
| for (LoggingSessionListener listener : listeners) { |
| if (listener.getLogFile().isPresent()) { |
| return listener.getLogFile(); |
| } |
| } |
| return Optional.empty(); |
| } |
| } |