io.github.microcks.security.UserInfoHandlerMethodArgumentResolver Maven / Gradle / Ivy

Go to download
/*
 * Licensed to Laurent Broudoux (the "Author") under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership. Author 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 io.github.microcks.security;

import org.keycloak.KeycloakSecurityContext;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.core.MethodParameter;
import org.springframework.web.bind.support.WebDataBinderFactory;
import org.springframework.web.context.request.NativeWebRequest;
import org.springframework.web.context.request.RequestAttributes;
import org.springframework.web.method.support.HandlerMethodArgumentResolver;
import org.springframework.web.method.support.ModelAndViewContainer;

/**
 * A Spring Web HandlerMethodArgumentResolver that knows how to retrieve a UserInfo controller method argument.
 * @author laurent
 */
public class UserInfoHandlerMethodArgumentResolver implements HandlerMethodArgumentResolver {

   /** A simple logger for diagnostic messages. */
   private static Logger log = LoggerFactory.getLogger(UserInfoHandlerMethodArgumentResolver.class);

   @Override
   public boolean supportsParameter(MethodParameter methodParameter) {
      return methodParameter.getParameterType().equals(UserInfo.class);
   }

   @Override
   public Object resolveArgument(MethodParameter methodParameter,
                                 ModelAndViewContainer modelAndViewContainer,
                                 NativeWebRequest nativeWebRequest,
                                 WebDataBinderFactory webDataBinderFactory) throws Exception {

      // Check if already present.
      Object userInfoObj = nativeWebRequest.getAttribute(UserInfo.class.getName(), RequestAttributes.SCOPE_REQUEST);

      if (userInfoObj != null) {
         log.debug("UserInfo is already present into request attribute");
         return UserInfo.class.cast(userInfoObj);
      }

      log.debug("Creating a new UserInfo to resolve {} argument", methodParameter.getMethod());
      UserInfo userInfo = null;
      Object ksc = nativeWebRequest.getAttribute(KeycloakSecurityContext.class.getName(), RequestAttributes.SCOPE_REQUEST);
      if (ksc != null) {
         log.debug("Found a KeycloakSecurityContext to map to UserInfo");
         KeycloakSecurityContext context = KeycloakSecurityContext.class.cast(ksc);

         // Create and store UserInfo in request attribute.
         userInfo = KeycloakTokenToUserInfoMapper.map(context);
         nativeWebRequest.setAttribute(UserInfo.class.getName(), userInfo, RequestAttributes.SCOPE_REQUEST);
      }

      return userInfo;
   }
}