| /* |
| * 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.johnzon.websocket.internal.servlet; |
| |
| import jakarta.servlet.ServletContextEvent; |
| import jakarta.servlet.ServletContextListener; |
| import java.util.function.Supplier; |
| |
| public class IgnoreIfMissing implements ServletContextListener { |
| private final Supplier<ServletContextListener> delegate; |
| private boolean skipped; |
| |
| public IgnoreIfMissing(final Supplier<ServletContextListener> delegate) { |
| this.delegate = delegate; |
| } |
| |
| @Override |
| public void contextInitialized(final ServletContextEvent sce) { |
| try { |
| delegate.get().contextInitialized(sce); |
| } catch (final Error | RuntimeException re) { |
| skipped = true; |
| } |
| } |
| |
| @Override |
| public void contextDestroyed(final ServletContextEvent sce) { |
| if (!skipped) { |
| delegate.get().contextDestroyed(sce); |
| } |
| } |
| } |