001// ***************************************************************************************************************************
002// * Licensed to the Apache Software Foundation (ASF) under one or more contributor license agreements.  See the NOTICE file *
003// * distributed with this work for additional information regarding copyright ownership.  The ASF licenses this file        *
004// * to you under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance            *
005// * with the License.  You may obtain a copy of the License at                                                              *
006// *                                                                                                                         *
007// *  http://www.apache.org/licenses/LICENSE-2.0                                                                             *
008// *                                                                                                                         *
009// * Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on an  *
010// * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.  See the License for the        *
011// * specific language governing permissions and limitations under the License.                                              *
012// ***************************************************************************************************************************
013package org.apache.juneau.rest.rrpc;
014
015import jakarta.servlet.*;
016
017import org.apache.juneau.*;
018import org.apache.juneau.http.remote.*;
019import org.apache.juneau.http.response.*;
020import org.apache.juneau.rest.*;
021
022/**
023 * A specialized {@link RestOpContext} for handling <js>"RRPC"</js> HTTP methods.
024 *
025 * <h5 class='section'>Notes:</h5><ul>
026 *    <li class='note'>This class is thread safe and reusable.
027 * </ul>
028 *
029 * <h5 class='section'>See Also:</h5><ul>
030 *    <li class='link'><a class="doclink" href="../../../../../index.html#jrs.RestRpc">REST/RPC</a>
031 * </ul>
032 */
033public class RrpcRestOpContext extends RestOpContext {
034
035   private final RrpcInterfaceMeta meta;
036
037   /**
038    * Constructor.
039    *
040    * @param builder The builder for this method context.
041    * @throws ServletException Problem with metadata was detected.
042    */
043   protected RrpcRestOpContext(RestOpContext.Builder builder) throws ServletException {
044      super(builder);
045
046      ClassMeta<?> interfaceClass = getBeanContext().getClassMeta(getJavaMethod().getGenericReturnType());
047      meta = new RrpcInterfaceMeta(interfaceClass.getInnerClass(), null);
048      if (meta.getMethodsByPath().isEmpty())
049         throw new InternalServerError("Method {0} returns an interface {1} that doesn't define any remote methods.", getJavaMethod().getName(), interfaceClass.getFullName());
050
051   }
052
053   @Override
054   public RrpcRestOpSession.Builder createSession(RestSession session) {
055      return RrpcRestOpSession.create(this, session);
056   }
057
058   /**
059    * Returns the metadata about the RRPC Java method.
060    *
061    * @return The metadata about the RRPC Java method.
062    */
063   protected RrpcInterfaceMeta getMeta() {
064      return meta;
065   }
066}