thrift/lib/cpp2/protocol/Serializer.cpp

/*
 * Copyright (c) Meta Platforms, Inc. and affiliates.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

#include <thrift/lib/cpp2/protocol/Serializer.h>

namespace apache {
namespace thrift {

std::unique_ptr<folly::IOBuf> serializeErrorStruct(
    protocol::PROTOCOL_TYPES protId, const TApplicationException& obj) {
  auto f = [&](auto prot) -> std::unique_ptr<folly::IOBuf> {
    size_t bufSize = obj.serializedSizeZC(&prot);
    folly::IOBufQueue queue;
    prot.setOutput(&queue, bufSize);
    obj.write(&prot);
    return queue.move();
  };

  switch (protId) {
    case apache::thrift::protocol::T_BINARY_PROTOCOL: {
      return f(BinaryProtocolWriter{});
    }
    case apache::thrift::protocol::T_COMPACT_PROTOCOL: {
      return f(CompactProtocolWriter{});
    }
    default: {
      LOG(ERROR) << "Invalid protocol from client";
    }
  }
  return nullptr;
}

} // namespace thrift
} // namespace apache