1// Protocol Buffers - Google's data interchange format
2// Copyright 2008 Google Inc.  All rights reserved.
3// https://developers.google.com/protocol-buffers/
4//
5// Redistribution and use in source and binary forms, with or without
6// modification, are permitted provided that the following conditions are
7// met:
8//
9//     * Redistributions of source code must retain the above copyright
10// notice, this list of conditions and the following disclaimer.
11//     * Redistributions in binary form must reproduce the above
12// copyright notice, this list of conditions and the following disclaimer
13// in the documentation and/or other materials provided with the
14// distribution.
15//     * Neither the name of Google Inc. nor the names of its
16// contributors may be used to endorse or promote products derived from
17// this software without specific prior written permission.
18//
19// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
20// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
21// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
22// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
23// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
24// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
25// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
26// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
27// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
28// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
29// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
30
31syntax = "proto3";
32
33package google.protobuf;
34
35option csharp_namespace = "Google.Protobuf.WellKnownTypes";
36option go_package = "types";
37option java_package = "com.google.protobuf";
38option java_outer_classname = "AnyProto";
39option java_multiple_files = true;
40option objc_class_prefix = "GPB";
41
42// `Any` contains an arbitrary serialized protocol buffer message along with a
43// URL that describes the type of the serialized message.
44//
45// Protobuf library provides support to pack/unpack Any values in the form
46// of utility functions or additional generated methods of the Any type.
47//
48// Example 1: Pack and unpack a message in C++.
49//
50//     Foo foo = ...;
51//     Any any;
52//     any.PackFrom(foo);
53//     ...
54//     if (any.UnpackTo(&foo)) {
55//       ...
56//     }
57//
58// Example 2: Pack and unpack a message in Java.
59//
60//     Foo foo = ...;
61//     Any any = Any.pack(foo);
62//     ...
63//     if (any.is(Foo.class)) {
64//       foo = any.unpack(Foo.class);
65//     }
66//
67//  Example 3: Pack and unpack a message in Python.
68//
69//     foo = Foo(...)
70//     any = Any()
71//     any.Pack(foo)
72//     ...
73//     if any.Is(Foo.DESCRIPTOR):
74//       any.Unpack(foo)
75//       ...
76//
77//  Example 4: Pack and unpack a message in Go
78//
79//      foo := &pb.Foo{...}
80//      any, err := ptypes.MarshalAny(foo)
81//      ...
82//      foo := &pb.Foo{}
83//      if err := ptypes.UnmarshalAny(any, foo); err != nil {
84//        ...
85//      }
86//
87// The pack methods provided by protobuf library will by default use
88// 'type.googleapis.com/full.type.name' as the type URL and the unpack
89// methods only use the fully qualified type name after the last '/'
90// in the type URL, for example "foo.bar.com/x/y.z" will yield type
91// name "y.z".
92//
93//
94// JSON
95// ====
96// The JSON representation of an `Any` value uses the regular
97// representation of the deserialized, embedded message, with an
98// additional field `@type` which contains the type URL. Example:
99//
100//     package google.profile;
101//     message Person {
102//       string first_name = 1;
103//       string last_name = 2;
104//     }
105//
106//     {
107//       "@type": "type.googleapis.com/google.profile.Person",
108//       "firstName": <string>,
109//       "lastName": <string>
110//     }
111//
112// If the embedded message type is well-known and has a custom JSON
113// representation, that representation will be embedded adding a field
114// `value` which holds the custom JSON in addition to the `@type`
115// field. Example (for message [google.protobuf.Duration][]):
116//
117//     {
118//       "@type": "type.googleapis.com/google.protobuf.Duration",
119//       "value": "1.212s"
120//     }
121//
122message Any {
123  // A URL/resource name that uniquely identifies the type of the serialized
124  // protocol buffer message. This string must contain at least
125  // one "/" character. The last segment of the URL's path must represent
126  // the fully qualified name of the type (as in
127  // `path/google.protobuf.Duration`). The name should be in a canonical form
128  // (e.g., leading "." is not accepted).
129  //
130  // In practice, teams usually precompile into the binary all types that they
131  // expect it to use in the context of Any. However, for URLs which use the
132  // scheme `http`, `https`, or no scheme, one can optionally set up a type
133  // server that maps type URLs to message definitions as follows:
134  //
135  // * If no scheme is provided, `https` is assumed.
136  // * An HTTP GET on the URL must yield a [google.protobuf.Type][]
137  //   value in binary format, or produce an error.
138  // * Applications are allowed to cache lookup results based on the
139  //   URL, or have them precompiled into a binary to avoid any
140  //   lookup. Therefore, binary compatibility needs to be preserved
141  //   on changes to types. (Use versioned type names to manage
142  //   breaking changes.)
143  //
144  // Note: this functionality is not currently available in the official
145  // protobuf release, and it is not used for type URLs beginning with
146  // type.googleapis.com.
147  //
148  // Schemes other than `http`, `https` (or the empty scheme) might be
149  // used with implementation specific semantics.
150  //
151  string type_url = 1;
152
153  // Must be a valid serialized protocol buffer of the above specified type.
154  bytes value = 2;
155}
156