001/*
002 * Copyright 2022-2026 Revetware LLC.
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 com.soklet;
018
019import org.jspecify.annotations.NonNull;
020
021import javax.annotation.concurrent.ThreadSafe;
022import java.util.Optional;
023
024/**
025 * Transport/admission context for MCP request rejection or acceptance.
026 *
027 * @author <a href="https://www.revetkn.com">Mark Allen</a>
028 */
029@ThreadSafe
030public interface McpAdmissionContext {
031        /**
032         * Provides the transport request being evaluated for admission.
033         *
034         * @return the current request
035         */
036        @NonNull
037        Request getRequest();
038
039        /**
040         * Provides the HTTP method for the MCP transport request.
041         *
042         * @return the transport HTTP method
043         */
044        @NonNull
045        HttpMethod getHttpMethod();
046
047        /**
048         * Provides the resolved MCP endpoint class.
049         *
050         * @return the target endpoint class
051         */
052        @NonNull
053        Class<? extends McpEndpoint> getEndpointClass();
054
055        /**
056         * Provides the JSON-RPC method name when the request is a parsed MCP {@code POST}.
057         *
058         * @return the JSON-RPC method, if available
059         */
060        @NonNull
061        Optional<String> getJsonRpcMethod();
062
063        /**
064         * Provides the high-level operation type when the request maps to a known MCP operation.
065         *
066         * @return the MCP operation type, if available
067         */
068        @NonNull
069        Optional<McpOperationType> getOperationType();
070
071        /**
072         * Provides the parsed JSON-RPC request ID for request-style MCP operations.
073         *
074         * @return the request ID, if available
075         */
076        @NonNull
077        Optional<McpJsonRpcRequestId> getJsonRpcRequestId();
078
079        /**
080         * Provides the requested MCP session ID when one is present on the transport request.
081         *
082         * @return the session ID, if available
083         */
084        @NonNull
085        Optional<String> getSessionId();
086}