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#include "proto_table_reader.h"
#include "node_table_reader.h"
#include "proto_helpers.h"
#include <yt/yt_proto/yt/formats/extension.pb.h>
#include <util/string/escape.h>
#include <util/string/printf.h>
namespace NYT {
using ::google::protobuf::Descriptor;
using ::google::protobuf::FieldDescriptor;
using ::google::protobuf::EnumValueDescriptor;
const TString& GetFieldColumnName(const FieldDescriptor* fieldDesc) {
const auto& columnName = fieldDesc->options().GetExtension(column_name);
if (!columnName.empty()) {
return columnName;
}
const auto& keyColumnName = fieldDesc->options().GetExtension(key_column_name);
if (!keyColumnName.empty()) {
return keyColumnName;
}
return fieldDesc->name();
}
void ReadMessageFromNode(const TNode& node, Message* row)
{
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);
const auto& columnName = GetFieldColumnName(fieldDesc);
const auto& nodeMap = node.AsMap();
auto it = nodeMap.find(columnName);
if (it == nodeMap.end()) {
continue; // no such column
}
auto actualType = it->second.GetType();
if (actualType == TNode::Null) {
continue; // null field
}
auto checkType = [&columnName] (TNode::EType expected, TNode::EType actual) {
if (expected != actual) {
ythrow TNode::TTypeError() << "expected node type " << expected
<< ", actual " << actual << " for node " << columnName.data();
}
};
switch (fieldDesc->type()) {
case FieldDescriptor::TYPE_STRING:
case FieldDescriptor::TYPE_BYTES:
checkType(TNode::String, actualType);
reflection->SetString(row, fieldDesc, it->second.AsString());
break;
case FieldDescriptor::TYPE_INT64:
case FieldDescriptor::TYPE_SINT64:
case FieldDescriptor::TYPE_SFIXED64:
checkType(TNode::Int64, actualType);
reflection->SetInt64(row, fieldDesc, it->second.AsInt64());
break;
case FieldDescriptor::TYPE_INT32:
case FieldDescriptor::TYPE_SINT32:
case FieldDescriptor::TYPE_SFIXED32:
checkType(TNode::Int64, actualType);
reflection->SetInt32(row, fieldDesc, it->second.AsInt64());
break;
case FieldDescriptor::TYPE_UINT64:
case FieldDescriptor::TYPE_FIXED64:
checkType(TNode::Uint64, actualType);
reflection->SetUInt64(row, fieldDesc, it->second.AsUint64());
break;
case FieldDescriptor::TYPE_UINT32:
case FieldDescriptor::TYPE_FIXED32:
checkType(TNode::Uint64, actualType);
reflection->SetUInt32(row, fieldDesc, it->second.AsUint64());
break;
case FieldDescriptor::TYPE_DOUBLE:
checkType(TNode::Double, actualType);
reflection->SetDouble(row, fieldDesc, it->second.AsDouble());
break;
case FieldDescriptor::TYPE_FLOAT:
checkType(TNode::Double, actualType);
reflection->SetFloat(row, fieldDesc, it->second.AsDouble());
break;
case FieldDescriptor::TYPE_BOOL:
checkType(TNode::Bool, actualType);
reflection->SetBool(row, fieldDesc, it->second.AsBool());
break;
case FieldDescriptor::TYPE_ENUM: {
TNode::EType columnType = TNode::String;
for (const auto& flag : fieldDesc->options().GetRepeatedExtension(flags)) {
if (flag == EWrapperFieldFlag::ENUM_INT) {
columnType = TNode::Int64;
break;
}
}
checkType(columnType, actualType);
const EnumValueDescriptor* valueDesc = nullptr;
TString stringValue;
if (columnType == TNode::String) {
const auto& value = it->second.AsString();
valueDesc = fieldDesc->enum_type()->FindValueByName(value);
stringValue = value;
} else if (columnType == TNode::Int64) {
const auto& value = it->second.AsInt64();
valueDesc = fieldDesc->enum_type()->FindValueByNumber(value);
stringValue = ToString(value);
} else {
Y_FAIL();
}
if (valueDesc == nullptr) {
ythrow yexception() << "Failed to parse value '" << EscapeC(stringValue) << "' as " << fieldDesc->enum_type()->full_name();
}
reflection->SetEnum(row, fieldDesc, valueDesc);
break;
}
case FieldDescriptor::TYPE_MESSAGE: {
checkType(TNode::String, actualType);
Message* message = reflection->MutableMessage(row, fieldDesc);
if (!message->ParseFromArray(it->second.AsString().data(), it->second.AsString().size())) {
ythrow yexception() << "Failed to parse protobuf message";
}
break;
}
default:
ythrow yexception() << "Incorrect protobuf type";
}
}
}
////////////////////////////////////////////////////////////////////////////////
TProtoTableReader::TProtoTableReader(
::TIntrusivePtr<TRawTableReader> input,
TVector<const Descriptor*>&& descriptors)
: NodeReader_(new TNodeTableReader(std::move(input)))
, Descriptors_(std::move(descriptors))
{ }
TProtoTableReader::~TProtoTableReader()
{ }
void TProtoTableReader::ReadRow(Message* row)
{
const auto& node = NodeReader_->GetRow();
ReadMessageFromNode(node, row);
}
bool TProtoTableReader::IsValid() const
{
return NodeReader_->IsValid();
}
void TProtoTableReader::Next()
{
NodeReader_->Next();
}
ui32 TProtoTableReader::GetTableIndex() const
{
return NodeReader_->GetTableIndex();
}
ui32 TProtoTableReader::GetRangeIndex() const
{
return NodeReader_->GetRangeIndex();
}
ui64 TProtoTableReader::GetRowIndex() const
{
return NodeReader_->GetRowIndex();
}
void TProtoTableReader::NextKey()
{
NodeReader_->NextKey();
}
TMaybe<size_t> TProtoTableReader::GetReadByteCount() const
{
return NodeReader_->GetReadByteCount();
}
bool TProtoTableReader::IsEndOfStream() const
{
return NodeReader_->IsEndOfStream();
}
bool TProtoTableReader::IsRawReaderExhausted() const
{
return NodeReader_->IsRawReaderExhausted();
}
////////////////////////////////////////////////////////////////////////////////
TLenvalProtoTableReader::TLenvalProtoTableReader(
::TIntrusivePtr<TRawTableReader> input,
TVector<const Descriptor*>&& descriptors)
: TLenvalTableReader(std::move(input))
, Descriptors_(std::move(descriptors))
{ }
TLenvalProtoTableReader::~TLenvalProtoTableReader()
{ }
void TLenvalProtoTableReader::ReadRow(Message* row)
{
ValidateProtoDescriptor(*row, GetTableIndex(), Descriptors_, true);
while (true) {
try {
ParseFromArcadiaStream(&Input_, *row, Length_);
RowTaken_ = true;
// We successfully parsed one more row from the stream,
// so reset retry count to their initial value.
Input_.ResetRetries();
break;
} catch (const std::exception& ) {
if (!TLenvalTableReader::Retry()) {
throw;
}
}
}
}
bool TLenvalProtoTableReader::IsValid() const
{
return TLenvalTableReader::IsValid();
}
void TLenvalProtoTableReader::Next()
{
TLenvalTableReader::Next();
}
ui32 TLenvalProtoTableReader::GetTableIndex() const
{
return TLenvalTableReader::GetTableIndex();
}
ui32 TLenvalProtoTableReader::GetRangeIndex() const
{
return TLenvalTableReader::GetRangeIndex();
}
ui64 TLenvalProtoTableReader::GetRowIndex() const
{
return TLenvalTableReader::GetRowIndex();
}
void TLenvalProtoTableReader::NextKey()
{
TLenvalTableReader::NextKey();
}
TMaybe<size_t> TLenvalProtoTableReader::GetReadByteCount() const
{
return TLenvalTableReader::GetReadByteCount();
}
bool TLenvalProtoTableReader::IsEndOfStream() const
{
return TLenvalTableReader::IsEndOfStream();
}
bool TLenvalProtoTableReader::IsRawReaderExhausted() const
{
return TLenvalTableReader::IsRawReaderExhausted();
}
void TLenvalProtoTableReader::SkipRow()
{
while (true) {
try {
size_t skipped = Input_.Skip(Length_);
if (skipped != Length_) {
ythrow yexception() << "Premature end of stream";
}
break;
} catch (const std::exception& ) {
if (!TLenvalTableReader::Retry()) {
throw;
}
}
}
}
////////////////////////////////////////////////////////////////////////////////
} // namespace NYT
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