Bo Yang | 5db2173 | 2015-05-21 14:28:59 -0700 | [diff] [blame] | 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 | |
| 31 | #ifndef GOOGLE_PROTOBUF_ANY_H__ |
| 32 | #define GOOGLE_PROTOBUF_ANY_H__ |
| 33 | |
| 34 | #include <string> |
| 35 | |
| 36 | #include <google/protobuf/stubs/common.h> |
Bo Yang | 5db2173 | 2015-05-21 14:28:59 -0700 | [diff] [blame] | 37 | #include <google/protobuf/descriptor.h> |
| 38 | #include <google/protobuf/message.h> |
Feng Xiao | eee38b0 | 2015-08-22 18:25:48 -0700 | [diff] [blame] | 39 | #include <google/protobuf/arenastring.h> |
Bo Yang | 5db2173 | 2015-05-21 14:28:59 -0700 | [diff] [blame] | 40 | |
| 41 | namespace google { |
| 42 | namespace protobuf { |
| 43 | namespace internal { |
| 44 | |
| 45 | // Helper class used to implement google::protobuf::Any. |
Bo Yang | cf603a9 | 2015-05-24 22:28:04 -0700 | [diff] [blame] | 46 | class LIBPROTOBUF_EXPORT AnyMetadata { |
Bo Yang | 5db2173 | 2015-05-21 14:28:59 -0700 | [diff] [blame] | 47 | typedef ArenaStringPtr UrlType; |
| 48 | typedef ArenaStringPtr ValueType; |
| 49 | public: |
| 50 | // AnyMetadata does not take ownership of "type_url" and "value". |
| 51 | AnyMetadata(UrlType* type_url, ValueType* value); |
| 52 | |
Jisi Liu | 3b3c8ab | 2016-03-30 11:39:59 -0700 | [diff] [blame] | 53 | // Packs a message using the default type URL prefix: "type.googleapis.com". |
| 54 | // The resulted type URL will be "type.googleapis.com/<message_full_name>". |
Bo Yang | 5db2173 | 2015-05-21 14:28:59 -0700 | [diff] [blame] | 55 | void PackFrom(const Message& message); |
Jisi Liu | 3b3c8ab | 2016-03-30 11:39:59 -0700 | [diff] [blame] | 56 | // Packs a message using the given type URL prefix. The type URL will be |
| 57 | // constructed by concatenating the message type's full name to the prefix |
| 58 | // with an optional "/" separator if the prefix doesn't already end up "/". |
| 59 | // For example, both PackFrom(message, "type.googleapis.com") and |
| 60 | // PackFrom(message, "type.googleapis.com/") yield the same result type |
| 61 | // URL: "type.googleapis.com/<message_full_name>". |
| 62 | void PackFrom(const Message& message, const string& type_url_prefix); |
Bo Yang | 5db2173 | 2015-05-21 14:28:59 -0700 | [diff] [blame] | 63 | |
Jisi Liu | 3b3c8ab | 2016-03-30 11:39:59 -0700 | [diff] [blame] | 64 | // Unpacks the payload into the given message. Returns false if the message's |
| 65 | // type doesn't match the type specified in the type URL (i.e., the full |
| 66 | // name after the last "/" of the type URL doesn't match the message's actaul |
| 67 | // full name) or parsing the payload has failed. |
Bo Yang | 5db2173 | 2015-05-21 14:28:59 -0700 | [diff] [blame] | 68 | bool UnpackTo(Message* message) const; |
| 69 | |
Jisi Liu | 3b3c8ab | 2016-03-30 11:39:59 -0700 | [diff] [blame] | 70 | // Checks whether the type specified in the type URL matches the given type. |
| 71 | // A type is consdiered matching if its full name matches the full name after |
| 72 | // the last "/" in the type URL. |
Bo Yang | 5db2173 | 2015-05-21 14:28:59 -0700 | [diff] [blame] | 73 | template<typename T> |
| 74 | bool Is() const { |
| 75 | return InternalIs(T::default_instance().GetDescriptor()); |
| 76 | } |
| 77 | |
| 78 | private: |
| 79 | bool InternalIs(const Descriptor* message) const; |
| 80 | |
| 81 | UrlType* type_url_; |
| 82 | ValueType* value_; |
| 83 | |
| 84 | GOOGLE_DISALLOW_EVIL_CONSTRUCTORS(AnyMetadata); |
| 85 | }; |
| 86 | |
| 87 | extern const char kAnyFullTypeName[]; // "google.protobuf.Any". |
| 88 | extern const char kTypeGoogleApisComPrefix[]; // "type.googleapis.com/". |
Jisi Liu | 46e8ff6 | 2015-10-05 11:59:43 -0700 | [diff] [blame] | 89 | extern const char kTypeGoogleProdComPrefix[]; // "type.googleprod.com/". |
Bo Yang | 5db2173 | 2015-05-21 14:28:59 -0700 | [diff] [blame] | 90 | |
| 91 | // Get the proto type name from Any::type_url value. For example, passing |
| 92 | // "type.googleapis.com/rpc.QueryOrigin" will return "rpc.QueryOrigin" in |
| 93 | // *full_type_name. Returns false if type_url does not start with |
Feng Xiao | e841bac | 2015-12-11 17:09:20 -0800 | [diff] [blame] | 94 | // "type.googleapis.com" or "type.googleprod.com". |
Bo Yang | 5db2173 | 2015-05-21 14:28:59 -0700 | [diff] [blame] | 95 | bool ParseAnyTypeUrl(const string& type_url, string* full_type_name); |
| 96 | |
| 97 | // See if message is of type google.protobuf.Any, if so, return the descriptors |
| 98 | // for "type_url" and "value" fields. |
| 99 | bool GetAnyFieldDescriptors(const Message& message, |
| 100 | const FieldDescriptor** type_url_field, |
| 101 | const FieldDescriptor** value_field); |
| 102 | |
| 103 | } // namespace internal |
| 104 | } // namespace protobuf |
| 105 | |
| 106 | } // namespace google |
| 107 | #endif // GOOGLE_PROTOBUF_ANY_H__ |