Line data    Source code

       1             : /*
       2             :  *
       3             :  * Copyright 2015, Google Inc.
       4             :  * All rights reserved.
       5             :  *
       6             :  * Redistribution and use in source and binary forms, with or without
       7             :  * modification, are permitted provided that the following conditions are
       8             :  * met:
       9             :  *
      10             :  *     * Redistributions of source code must retain the above copyright
      11             :  * notice, this list of conditions and the following disclaimer.
      12             :  *     * Redistributions in binary form must reproduce the above
      13             :  * copyright notice, this list of conditions and the following disclaimer
      14             :  * in the documentation and/or other materials provided with the
      15             :  * distribution.
      16             :  *     * Neither the name of Google Inc. nor the names of its
      17             :  * contributors may be used to endorse or promote products derived from
      18             :  * this software without specific prior written permission.
      19             :  *
      20             :  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
      21             :  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
      22             :  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
      23             :  * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
      24             :  * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
      25             :  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
      26             :  * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
      27             :  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
      28             :  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
      29             :  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
      30             :  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
      31             :  *
      32             :  */
      33             : 
      34             : #ifndef GRPC_INTERNAL_CPP_PROTO_PROTO_UTILS_H
      35             : #define GRPC_INTERNAL_CPP_PROTO_PROTO_UTILS_H
      36             : 
      37             : #include <type_traits>
      38             : 
      39             : #include <grpc/grpc.h>
      40             : #include <grpc++/impl/serialization_traits.h>
      41             : #include <grpc++/support/config_protobuf.h>
      42             : #include <grpc++/support/status.h>
      43             : 
      44             : namespace grpc {
      45             : 
      46             : // Serialize the msg into a buffer created inside the function. The caller
      47             : // should destroy the returned buffer when done with it. If serialization fails,
      48             : // false is returned and buffer is left unchanged.
      49             : Status SerializeProto(const grpc::protobuf::Message& msg,
      50             :                       grpc_byte_buffer** buffer);
      51             : 
      52             : // The caller keeps ownership of buffer and msg.
      53             : Status DeserializeProto(grpc_byte_buffer* buffer, grpc::protobuf::Message* msg,
      54             :                         int max_message_size);
      55             : 
      56             : template <class T>
      57             : class SerializationTraits<T, typename std::enable_if<std::is_base_of<
      58             :                                  grpc::protobuf::Message, T>::value>::type> {
      59             :  public:
      60     2795489 :   static Status Serialize(const grpc::protobuf::Message& msg,
      61             :                           grpc_byte_buffer** buffer, bool* own_buffer) {
      62     2795489 :     *own_buffer = true;
      63     2795489 :     return SerializeProto(msg, buffer);
      64             :   }
      65     2794687 :   static Status Deserialize(grpc_byte_buffer* buffer,
      66             :                             grpc::protobuf::Message* msg,
      67             :                             int max_message_size) {
      68     2794687 :     auto status = DeserializeProto(buffer, msg, max_message_size);
      69     2795768 :     grpc_byte_buffer_destroy(buffer);
      70     2795857 :     return status;
      71             :   }
      72             : };
      73             : 
      74             : }  // namespace grpc
      75             : 
      76             : #endif  // GRPC_INTERNAL_CPP_PROTO_PROTO_UTILS_H