src/google/protobuf/any.proto

// Protocol Buffers - Google's data interchange format
// Copyright 2008 Google Inc.  All rights reserved.
// https://developers.google.com/protocol-buffers/
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are
// met:
//
//     * Redistributions of source code must retain the above copyright
// notice, this list of conditions and the following disclaimer.
//     * Redistributions in binary form must reproduce the above
// copyright notice, this list of conditions and the following disclaimer
// in the documentation and/or other materials provided with the
// distribution.
//     * Neither the name of Google Inc. nor the names of its
// contributors may be used to endorse or promote products derived from
// this software without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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syntax = "proto3";

package google.protobuf;

option java_generate_equals_and_hash = true;
option java_multiple_files = true;
option java_outer_classname = "AnyProto";
option java_package = "com.google.protobuf";
option csharp_namespace = "Google.ProtocolBuffers";
option objc_class_prefix = "GPB";


// `Any` contains an arbitrary serialized message along with a URL
// that describes the type of the serialized message.
//
// The proto runtimes and/or compiler will eventually
//  provide utilities to pack/unpack Any values (projected Q1/15).
//
// # JSON
// The JSON representation of an `Any` value uses the regular
// representation of the deserialized, embedded message, with an
// additional field `@type` which contains the type URL. Example:
//
//     package google.profile;
//     message Person {
//       string first_name = 1;
//       string last_name = 2;
//     }
//
//     {
//       "@type": "type.googleapis.com/google.profile.Person",
//       "firstName": <string>,
//       "lastName": <string>
//     }
//
// If the embedded message type is well-known and has a custom JSON
// representation, that representation will be embedded adding a field
// `value` which holds the custom JSON in addition to the the `@type`
// field. Example (for message [google.protobuf.Duration][google.protobuf.Duration]):
//
//     {
//       "@type": "type.googleapis.com/google.protobuf.Duration",
//       "value": "1.212s"
//     }
//
message Any {
  // A URL/resource name whose content describes the type of the
  // serialized message.
  //
  // For URLs which use the schema `http`, `https`, or no schema, the
  // following restrictions and interpretations apply:
  //
  // * If no schema is provided, `https` is assumed.
  // * The last segment of the URL's path must represent the fully
  //   qualified name of the type (as in `path/google.protobuf.Duration`).
  // * An HTTP GET on the URL must yield a [google.protobuf.Type][google.protobuf.Type]
  //   value in binary format, or produce an error.
  // * Applications are allowed to cache lookup results based on the
  //   URL, or have them precompiled into a binary to avoid any
  //   lookup. Therefore, binary compatibility needs to be preserved
  //   on changes to types. (Use versioned type names to manage
  //   breaking changes.)
  //
  // Schemas other than `http`, `https` (or the empty schema) might be
  // used with implementation specific semantics.
  //
  // Types originating from the `google.*` package
  // namespace should use `type.googleapis.com/full.type.name` (without
  // schema and path). A type service will eventually become available which
  // serves those URLs (projected Q2/15).
  string type_url = 1;

  // Must be valid serialized data of the above specified type.
  bytes value = 2;
}