001/*
002 * Licensed to the Apache Software Foundation (ASF) under one or more
003 * contributor license agreements.  See the NOTICE file distributed with
004 * this work for additional information regarding copyright ownership.
005 * The ASF licenses this file to You under the Apache License, Version 2.0
006 * (the "License"); you may not use this file except in compliance with
007 * the License.  You may obtain a copy of the License at
008 *
009 *      http://www.apache.org/licenses/LICENSE-2.0
010 *
011 * Unless required by applicable law or agreed to in writing, software
012 * distributed under the License is distributed on an "AS IS" BASIS,
013 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
014 * See the License for the specific language governing permissions and
015 * limitations under the License.
016 */
017package org.apache.juneau.bean.mcp.v20260728;
018
019import java.util.*;
020
021/**
022 * Shared SEP-2243 routing-name helper used by both the {@code 2026-07-28} server adapter and client adapter.
023 *
024 * @since 10.0.0
025 */
026public final class McpRoutingNames {
027
028   private McpRoutingNames() {}
029
030   /**
031    * Returns the routing name for {@code Mcp-Name} agreement checks and client header stamping.
032    *
033    * @param method The JSON-RPC method name.
034    * @param params The request params object.
035    * @return The routing name, or empty string.
036    */
037   public static String routingName(String method, Object params) {
038      var name = switch (method) {
039         case McpMethods.TOOLS_CALL, McpMethods.PROMPTS_GET -> paramValue(params, "name");
040         case McpMethods.RESOURCES_READ -> paramValue(params, "uri");
041         default -> "";
042      };
043      return name == null ? "" : name;
044   }
045
046   private static String paramValue(Object params, String key) {
047      if (params instanceof Map<?,?> m) {
048         var v = m.get(key);
049         return v == null ? null : v.toString();
050      }
051      return null;
052   }
053}