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#include "proto_table_writer.h"
#include "node_table_writer.h"
#include "proto_helpers.h"
#include <yt/yt/core/misc/protobuf_helpers.h>
#include <yt/cpp/mapreduce/common/node_builder.h>
#include <yt/cpp/mapreduce/interface/io.h>
#include <yt/cpp/mapreduce/io/job_writer.h>
#include <yt/yt_proto/yt/formats/extension.pb.h>
#include <google/protobuf/unknown_field_set.h>
namespace NYT {
using ::google::protobuf::Descriptor;
using ::google::protobuf::FieldDescriptor;
////////////////////////////////////////////////////////////////////////////////
TNode MakeNodeFromMessage(const Message& row)
{
TNode node;
TNodeBuilder builder(&node);
builder.OnBeginMap();
auto* descriptor = row.GetDescriptor();
auto* reflection = row.GetReflection();
int count = descriptor->field_count();
for (int i = 0; i < count; ++i) {
auto* fieldDesc = descriptor->field(i);
if (fieldDesc->is_repeated()) {
Y_ENSURE(reflection->FieldSize(row, fieldDesc) == 0, "Storing repeated protobuf fields is not supported yet");
continue;
} else if (!reflection->HasField(row, fieldDesc)) {
continue;
}
auto columnName = fieldDesc->options().GetExtension(column_name);
if (columnName.empty()) {
const auto& keyColumnName = fieldDesc->options().GetExtension(key_column_name);
columnName = keyColumnName.empty() ? fieldDesc->name() : keyColumnName;
}
builder.OnKeyedItem(columnName);
switch (fieldDesc->type()) {
case FieldDescriptor::TYPE_STRING:
case FieldDescriptor::TYPE_BYTES:
builder.OnStringScalar(reflection->GetString(row, fieldDesc));
break;
case FieldDescriptor::TYPE_INT64:
case FieldDescriptor::TYPE_SINT64:
case FieldDescriptor::TYPE_SFIXED64:
builder.OnInt64Scalar(reflection->GetInt64(row, fieldDesc));
break;
case FieldDescriptor::TYPE_INT32:
case FieldDescriptor::TYPE_SINT32:
case FieldDescriptor::TYPE_SFIXED32:
builder.OnInt64Scalar(reflection->GetInt32(row, fieldDesc));
break;
case FieldDescriptor::TYPE_UINT64:
case FieldDescriptor::TYPE_FIXED64:
builder.OnUint64Scalar(reflection->GetUInt64(row, fieldDesc));
break;
case FieldDescriptor::TYPE_UINT32:
case FieldDescriptor::TYPE_FIXED32:
builder.OnUint64Scalar(reflection->GetUInt32(row, fieldDesc));
break;
case FieldDescriptor::TYPE_DOUBLE:
builder.OnDoubleScalar(reflection->GetDouble(row, fieldDesc));
break;
case FieldDescriptor::TYPE_FLOAT:
builder.OnDoubleScalar(reflection->GetFloat(row, fieldDesc));
break;
case FieldDescriptor::TYPE_BOOL:
builder.OnBooleanScalar(reflection->GetBool(row, fieldDesc));
break;
case FieldDescriptor::TYPE_ENUM:
builder.OnStringScalar(reflection->GetEnum(row, fieldDesc)->name());
break;
case FieldDescriptor::TYPE_MESSAGE:
builder.OnStringScalar(reflection->GetMessage(row, fieldDesc).SerializeAsString());
break;
default:
ythrow yexception() << "Invalid field type for column: " << columnName;
break;
}
}
builder.OnEndMap();
return node;
}
////////////////////////////////////////////////////////////////////////////////
TProtoTableWriter::TProtoTableWriter(
THolder<IProxyOutput> output,
TVector<const Descriptor*>&& descriptors)
: NodeWriter_(new TNodeTableWriter(std::move(output)))
, Descriptors_(std::move(descriptors))
{ }
TProtoTableWriter::~TProtoTableWriter()
{ }
size_t TProtoTableWriter::GetBufferMemoryUsage() const
{
return NodeWriter_->GetBufferMemoryUsage();
}
size_t TProtoTableWriter::GetTableCount() const
{
return NodeWriter_->GetTableCount();
}
void TProtoTableWriter::FinishTable(size_t tableIndex)
{
NodeWriter_->FinishTable(tableIndex);
}
void TProtoTableWriter::AddRow(const Message& row, size_t tableIndex)
{
NodeWriter_->AddRow(MakeNodeFromMessage(row), tableIndex);
}
void TProtoTableWriter::AddRow(Message&& row, size_t tableIndex)
{
TProtoTableWriter::AddRow(row, tableIndex);
}
void TProtoTableWriter::Abort()
{
NodeWriter_->Abort();
}
////////////////////////////////////////////////////////////////////////////////
TLenvalProtoTableWriter::TLenvalProtoTableWriter(
THolder<IProxyOutput> output,
TVector<const Descriptor*>&& descriptors)
: Output_(std::move(output))
, Descriptors_(std::move(descriptors))
{ }
TLenvalProtoTableWriter::~TLenvalProtoTableWriter()
{ }
size_t TLenvalProtoTableWriter::GetBufferMemoryUsage() const
{
return Output_->GetBufferMemoryUsage();
}
size_t TLenvalProtoTableWriter::GetTableCount() const
{
return Output_->GetStreamCount();
}
void TLenvalProtoTableWriter::FinishTable(size_t tableIndex)
{
Output_->GetStream(tableIndex)->Finish();
}
void TLenvalProtoTableWriter::AddRow(const Message& row, size_t tableIndex)
{
ValidateProtoDescriptor(row, tableIndex, Descriptors_, false);
Y_ABORT_UNLESS(row.GetReflection()->GetUnknownFields(row).empty(),
"Message has unknown fields. This probably means bug in client code.\n"
"Message: %s", row.DebugString().data());
auto* stream = Output_->GetStream(tableIndex);
i32 size = row.ByteSizeLong();
stream->Write(&size, sizeof(size));
// NB: Scope is essential here since output stream adaptor flushes in destructor.
{
TProtobufOutputStreamAdaptor streamAdaptor(stream);
auto result = row.SerializeToZeroCopyStream(&streamAdaptor);
Y_ENSURE(result && !streamAdaptor.HasError(), "Failed to serialize protobuf message");
}
Output_->OnRowFinished(tableIndex);
}
void TLenvalProtoTableWriter::AddRow(Message&& row, size_t tableIndex)
{
TLenvalProtoTableWriter::AddRow(row, tableIndex);
}
void TLenvalProtoTableWriter::Abort()
{
Output_->Abort();
}
////////////////////////////////////////////////////////////////////////////////
TLenvalProtoSingleTableWriter::TLenvalProtoSingleTableWriter(
THolder<IProxyOutput> output,
const Descriptor* descriptor)
: TLenvalProtoTableWriter(std::move(output), {descriptor})
{ }
void TLenvalProtoSingleTableWriter::AddRow(const Message& row, size_t tableIndex)
{
ValidateProtoDescriptor(row, 0, Descriptors_, false);
Y_ABORT_UNLESS(row.GetReflection()->GetUnknownFields(row).empty(),
"Message has unknown fields. This probably means bug in client code.\n"
"Message: %s", row.DebugString().data());
auto* stream = Output_->GetStream(tableIndex);
i32 size = row.ByteSizeLong();
stream->Write(&size, sizeof(size));
// NB: Scope is essential here since output stream adaptor flushes in destructor.
{
TProtobufOutputStreamAdaptor streamAdaptor(stream);
auto result = row.SerializeToZeroCopyStream(&streamAdaptor);
Y_ENSURE(result && !streamAdaptor.HasError(), "Failed to serialize protobuf message");
}
Output_->OnRowFinished(tableIndex);
}
////////////////////////////////////////////////////////////////////////////////
} // namespace NYT
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