001/*
002 * Copyright 2012-2018 the original author or authors.
003 *
004 * Licensed under the Apache License, Version 2.0 (the "License");
005 * you may not use this file except in compliance with the License.
006 * You may obtain a copy of the License at
007 *
008 *      http://www.apache.org/licenses/LICENSE-2.0
009 *
010 * Unless required by applicable law or agreed to in writing, software
011 * distributed under the License is distributed on an "AS IS" BASIS,
012 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
013 * See the License for the specific language governing permissions and
014 * limitations under the License.
015 */
016
017package org.springframework.boot.actuate.web.mappings.servlet;
018
019import java.util.Collections;
020import java.util.List;
021import java.util.stream.Collectors;
022
023import javax.servlet.Servlet;
024import javax.servlet.ServletContext;
025
026import org.springframework.boot.actuate.web.mappings.MappingDescriptionProvider;
027import org.springframework.context.ApplicationContext;
028import org.springframework.web.context.WebApplicationContext;
029
030/**
031 * A {@link MappingDescriptionProvider} that describes that mappings of any {@link Servlet
032 * Servlets} registered with a {@link ServletContext}.
033 *
034 * @author Andy Wilkinson
035 * @since 2.0
036 */
037public class ServletsMappingDescriptionProvider implements MappingDescriptionProvider {
038
039        @Override
040        public List<ServletRegistrationMappingDescription> describeMappings(
041                        ApplicationContext context) {
042                if (!(context instanceof WebApplicationContext)) {
043                        return Collections.emptyList();
044                }
045                return ((WebApplicationContext) context).getServletContext()
046                                .getServletRegistrations().values().stream()
047                                .map(ServletRegistrationMappingDescription::new)
048                                .collect(Collectors.toList());
049        }
050
051        @Override
052        public String getMappingName() {
053                return "servlets";
054        }
055
056}