1b0575e93e4c39dec69365b850088a1eb7f82c5b3Tamas Berghammer#region Copyright notice and license 2b0575e93e4c39dec69365b850088a1eb7f82c5b3Tamas Berghammer// Protocol Buffers - Google's data interchange format 3b0575e93e4c39dec69365b850088a1eb7f82c5b3Tamas Berghammer// Copyright 2015 Google Inc. All rights reserved. 4b0575e93e4c39dec69365b850088a1eb7f82c5b3Tamas Berghammer// https://developers.google.com/protocol-buffers/ 5b0575e93e4c39dec69365b850088a1eb7f82c5b3Tamas Berghammer// 6b0575e93e4c39dec69365b850088a1eb7f82c5b3Tamas Berghammer// Redistribution and use in source and binary forms, with or without 7b0575e93e4c39dec69365b850088a1eb7f82c5b3Tamas Berghammer// modification, are permitted provided that the following conditions are 8b0575e93e4c39dec69365b850088a1eb7f82c5b3Tamas Berghammer// met: 9b0575e93e4c39dec69365b850088a1eb7f82c5b3Tamas Berghammer// 10b0575e93e4c39dec69365b850088a1eb7f82c5b3Tamas Berghammer// * Redistributions of source code must retain the above copyright 11b0575e93e4c39dec69365b850088a1eb7f82c5b3Tamas Berghammer// notice, this list of conditions and the following disclaimer. 12b0575e93e4c39dec69365b850088a1eb7f82c5b3Tamas Berghammer// * Redistributions in binary form must reproduce the above 13b0575e93e4c39dec69365b850088a1eb7f82c5b3Tamas Berghammer// copyright notice, this list of conditions and the following disclaimer 14b0575e93e4c39dec69365b850088a1eb7f82c5b3Tamas Berghammer// in the documentation and/or other materials provided with the 15b0575e93e4c39dec69365b850088a1eb7f82c5b3Tamas Berghammer// distribution. 16b0575e93e4c39dec69365b850088a1eb7f82c5b3Tamas Berghammer// * Neither the name of Google Inc. nor the names of its 17b0575e93e4c39dec69365b850088a1eb7f82c5b3Tamas Berghammer// contributors may be used to endorse or promote products derived from 18b0575e93e4c39dec69365b850088a1eb7f82c5b3Tamas Berghammer// this software without specific prior written permission. 19b0575e93e4c39dec69365b850088a1eb7f82c5b3Tamas Berghammer// 20b0575e93e4c39dec69365b850088a1eb7f82c5b3Tamas Berghammer// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 21b0575e93e4c39dec69365b850088a1eb7f82c5b3Tamas Berghammer// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 22b0575e93e4c39dec69365b850088a1eb7f82c5b3Tamas Berghammer// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 23b0575e93e4c39dec69365b850088a1eb7f82c5b3Tamas Berghammer// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 24b0575e93e4c39dec69365b850088a1eb7f82c5b3Tamas Berghammer// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 25b0575e93e4c39dec69365b850088a1eb7f82c5b3Tamas Berghammer// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 26b0575e93e4c39dec69365b850088a1eb7f82c5b3Tamas Berghammer// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 27b0575e93e4c39dec69365b850088a1eb7f82c5b3Tamas Berghammer// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 28b0575e93e4c39dec69365b850088a1eb7f82c5b3Tamas Berghammer// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 29b0575e93e4c39dec69365b850088a1eb7f82c5b3Tamas Berghammer// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 30b0575e93e4c39dec69365b850088a1eb7f82c5b3Tamas Berghammer// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 31b0575e93e4c39dec69365b850088a1eb7f82c5b3Tamas Berghammer#endregion 32b0575e93e4c39dec69365b850088a1eb7f82c5b3Tamas Berghammer 33b0575e93e4c39dec69365b850088a1eb7f82c5b3Tamas Berghammerusing Google.Protobuf.Reflection; 34b0575e93e4c39dec69365b850088a1eb7f82c5b3Tamas Berghammer 35b0575e93e4c39dec69365b850088a1eb7f82c5b3Tamas Berghammernamespace Google.Protobuf.WellKnownTypes 36b0575e93e4c39dec69365b850088a1eb7f82c5b3Tamas Berghammer{ 37b0575e93e4c39dec69365b850088a1eb7f82c5b3Tamas Berghammer public partial class Any 38b0575e93e4c39dec69365b850088a1eb7f82c5b3Tamas Berghammer { 39b0575e93e4c39dec69365b850088a1eb7f82c5b3Tamas Berghammer private const string DefaultPrefix = "type.googleapis.com"; 40b0575e93e4c39dec69365b850088a1eb7f82c5b3Tamas Berghammer 41b0575e93e4c39dec69365b850088a1eb7f82c5b3Tamas Berghammer // This could be moved to MessageDescriptor if we wanted to, but keeping it here means 42b0575e93e4c39dec69365b850088a1eb7f82c5b3Tamas Berghammer // all the Any-specific code is in the same place. 43b0575e93e4c39dec69365b850088a1eb7f82c5b3Tamas Berghammer private static string GetTypeUrl(MessageDescriptor descriptor, string prefix) => 44b0575e93e4c39dec69365b850088a1eb7f82c5b3Tamas Berghammer prefix.EndsWith("/") ? prefix + descriptor.FullName : prefix + "/" + descriptor.FullName; 45b0575e93e4c39dec69365b850088a1eb7f82c5b3Tamas Berghammer 46b0575e93e4c39dec69365b850088a1eb7f82c5b3Tamas Berghammer /// <summary> 47b0575e93e4c39dec69365b850088a1eb7f82c5b3Tamas Berghammer /// Retrieves the type name for a type URL. This is always just the last part of the URL, 48b0575e93e4c39dec69365b850088a1eb7f82c5b3Tamas Berghammer /// after the trailing slash. No validation of anything before the trailing slash is performed. 49b0575e93e4c39dec69365b850088a1eb7f82c5b3Tamas Berghammer /// If the type URL does not include a slash, an empty string is returned rather than an exception 50b0575e93e4c39dec69365b850088a1eb7f82c5b3Tamas Berghammer /// being thrown; this won't match any types, and the calling code is probably in a better position 51b0575e93e4c39dec69365b850088a1eb7f82c5b3Tamas Berghammer /// to give a meaningful error. 52b0575e93e4c39dec69365b850088a1eb7f82c5b3Tamas Berghammer /// There is no handling of fragments or queries at the moment. 53b0575e93e4c39dec69365b850088a1eb7f82c5b3Tamas Berghammer /// </summary> 54b0575e93e4c39dec69365b850088a1eb7f82c5b3Tamas Berghammer /// <param name="typeUrl">The URL to extract the type name from</param> 55b0575e93e4c39dec69365b850088a1eb7f82c5b3Tamas Berghammer /// <returns>The type name</returns> 56b0575e93e4c39dec69365b850088a1eb7f82c5b3Tamas Berghammer internal static string GetTypeName(string typeUrl) 57b0575e93e4c39dec69365b850088a1eb7f82c5b3Tamas Berghammer { 58b0575e93e4c39dec69365b850088a1eb7f82c5b3Tamas Berghammer int lastSlash = typeUrl.LastIndexOf('/'); 59b0575e93e4c39dec69365b850088a1eb7f82c5b3Tamas Berghammer return lastSlash == -1 ? "" : typeUrl.Substring(lastSlash + 1); 60b0575e93e4c39dec69365b850088a1eb7f82c5b3Tamas Berghammer } 61b0575e93e4c39dec69365b850088a1eb7f82c5b3Tamas Berghammer 62b0575e93e4c39dec69365b850088a1eb7f82c5b3Tamas Berghammer /// <summary> 63b0575e93e4c39dec69365b850088a1eb7f82c5b3Tamas Berghammer /// Unpacks the content of this Any message into the target message type, 64b0575e93e4c39dec69365b850088a1eb7f82c5b3Tamas Berghammer /// which must match the type URL within this Any message. 65b0575e93e4c39dec69365b850088a1eb7f82c5b3Tamas Berghammer /// </summary> 66b0575e93e4c39dec69365b850088a1eb7f82c5b3Tamas Berghammer /// <typeparam name="T">The type of message to unpack the content into.</typeparam> 67b0575e93e4c39dec69365b850088a1eb7f82c5b3Tamas Berghammer /// <returns>The unpacked message.</returns> 68b0575e93e4c39dec69365b850088a1eb7f82c5b3Tamas Berghammer /// <exception cref="InvalidProtocolBufferException">The target message type doesn't match the type URL in this message</exception> 69b0575e93e4c39dec69365b850088a1eb7f82c5b3Tamas Berghammer public T Unpack<T>() where T : IMessage, new() 70b0575e93e4c39dec69365b850088a1eb7f82c5b3Tamas Berghammer { 71b0575e93e4c39dec69365b850088a1eb7f82c5b3Tamas Berghammer // Note: this doesn't perform as well is it might. We could take a MessageParser<T> in an alternative overload, 72b0575e93e4c39dec69365b850088a1eb7f82c5b3Tamas Berghammer // which would be expected to perform slightly better... although the difference is likely to be negligible. 73b0575e93e4c39dec69365b850088a1eb7f82c5b3Tamas Berghammer T target = new T(); 74b0575e93e4c39dec69365b850088a1eb7f82c5b3Tamas Berghammer if (GetTypeName(TypeUrl) != target.Descriptor.FullName) 75b0575e93e4c39dec69365b850088a1eb7f82c5b3Tamas Berghammer { 76b0575e93e4c39dec69365b850088a1eb7f82c5b3Tamas Berghammer throw new InvalidProtocolBufferException( 77b0575e93e4c39dec69365b850088a1eb7f82c5b3Tamas Berghammer $"Full type name for {target.Descriptor.Name} is {target.Descriptor.FullName}; Any message's type url is {TypeUrl}"); 78b0575e93e4c39dec69365b850088a1eb7f82c5b3Tamas Berghammer } 79b0575e93e4c39dec69365b850088a1eb7f82c5b3Tamas Berghammer target.MergeFrom(Value); 80b0575e93e4c39dec69365b850088a1eb7f82c5b3Tamas Berghammer return target; 81b0575e93e4c39dec69365b850088a1eb7f82c5b3Tamas Berghammer } 82b0575e93e4c39dec69365b850088a1eb7f82c5b3Tamas Berghammer 83b0575e93e4c39dec69365b850088a1eb7f82c5b3Tamas Berghammer /// <summary> 84b0575e93e4c39dec69365b850088a1eb7f82c5b3Tamas Berghammer /// Packs the specified message into an Any message using a type URL prefix of "type.googleapis.com". 85b0575e93e4c39dec69365b850088a1eb7f82c5b3Tamas Berghammer /// </summary> 86b0575e93e4c39dec69365b850088a1eb7f82c5b3Tamas Berghammer /// <param name="message">The message to pack.</param> 87b0575e93e4c39dec69365b850088a1eb7f82c5b3Tamas Berghammer /// <returns>An Any message with the content and type URL of <paramref name="message"/>.</returns> 88b0575e93e4c39dec69365b850088a1eb7f82c5b3Tamas Berghammer public static Any Pack(IMessage message) => Pack(message, DefaultPrefix); 89b0575e93e4c39dec69365b850088a1eb7f82c5b3Tamas Berghammer 90b0575e93e4c39dec69365b850088a1eb7f82c5b3Tamas Berghammer /// <summary> 91b0575e93e4c39dec69365b850088a1eb7f82c5b3Tamas Berghammer /// Packs the specified message into an Any message using the specified type URL prefix. 92b0575e93e4c39dec69365b850088a1eb7f82c5b3Tamas Berghammer /// </summary> 93b0575e93e4c39dec69365b850088a1eb7f82c5b3Tamas Berghammer /// <param name="message">The message to pack.</param> 94b0575e93e4c39dec69365b850088a1eb7f82c5b3Tamas Berghammer /// <param name="typeUrlPrefix">The prefix for the type URL.</param> 95b0575e93e4c39dec69365b850088a1eb7f82c5b3Tamas Berghammer /// <returns>An Any message with the content and type URL of <paramref name="message"/>.</returns> 96b0575e93e4c39dec69365b850088a1eb7f82c5b3Tamas Berghammer public static Any Pack(IMessage message, string typeUrlPrefix) 97b0575e93e4c39dec69365b850088a1eb7f82c5b3Tamas Berghammer { 98b0575e93e4c39dec69365b850088a1eb7f82c5b3Tamas Berghammer ProtoPreconditions.CheckNotNull(message, nameof(message)); 99b0575e93e4c39dec69365b850088a1eb7f82c5b3Tamas Berghammer ProtoPreconditions.CheckNotNull(typeUrlPrefix, nameof(typeUrlPrefix)); 100b0575e93e4c39dec69365b850088a1eb7f82c5b3Tamas Berghammer return new Any 101b0575e93e4c39dec69365b850088a1eb7f82c5b3Tamas Berghammer { 102b0575e93e4c39dec69365b850088a1eb7f82c5b3Tamas Berghammer TypeUrl = GetTypeUrl(message.Descriptor, typeUrlPrefix), 103b0575e93e4c39dec69365b850088a1eb7f82c5b3Tamas Berghammer Value = message.ToByteString() 104b0575e93e4c39dec69365b850088a1eb7f82c5b3Tamas Berghammer }; 105b0575e93e4c39dec69365b850088a1eb7f82c5b3Tamas Berghammer } 106b0575e93e4c39dec69365b850088a1eb7f82c5b3Tamas Berghammer } 107b0575e93e4c39dec69365b850088a1eb7f82c5b3Tamas Berghammer} 108