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#include "retryful_writer.h"
#include "retry_heavy_write_request.h"
#include <yt/cpp/mapreduce/http/requests.h>
#include <yt/cpp/mapreduce/interface/errors.h>
#include <yt/cpp/mapreduce/interface/finish_or_die.h>
#include <yt/cpp/mapreduce/interface/logging/yt_log.h>
#include <util/generic/size_literals.h>
namespace NYT {
////////////////////////////////////////////////////////////////////////////////
TRetryfulWriter::~TRetryfulWriter()
{
NDetail::FinishOrDie(this, "TRetryfulWriter");
}
void TRetryfulWriter::CheckWriterState()
{
switch (WriterState_) {
case Ok:
break;
case Completed:
ythrow TApiUsageError() << "Cannot use table writer that is finished";
case Error:
ythrow TApiUsageError() << "Cannot use table writer that finished with error";
}
}
void TRetryfulWriter::NotifyRowEnd()
{
CheckWriterState();
if (Buffer_.Size() >= BufferSize_) {
FlushBuffer(false);
}
}
void TRetryfulWriter::DoWrite(const void* buf, size_t len)
{
CheckWriterState();
while (Buffer_.Size() + len > Buffer_.Capacity()) {
Buffer_.Reserve(Buffer_.Capacity() * 2);
}
Buffer_.Append(static_cast<const char*>(buf), len);
}
void TRetryfulWriter::DoFinish()
{
if (WriterState_ != Ok) {
return;
}
FlushBuffer(true);
if (Started_) {
FilledBuffers_.Stop();
Thread_.Join();
}
if (Exception_) {
WriterState_ = Error;
std::rethrow_exception(Exception_);
}
if (WriteTransaction_) {
WriteTransaction_->Commit();
}
WriterState_ = Completed;
}
void TRetryfulWriter::FlushBuffer(bool lastBlock)
{
if (!Started_) {
if (lastBlock) {
try {
Send(Buffer_);
} catch (...) {
WriterState_ = Error;
throw;
}
return;
} else {
Started_ = true;
Thread_.Start();
}
}
auto emptyBuffer = EmptyBuffers_.Pop();
if (!emptyBuffer) {
WriterState_ = Error;
std::rethrow_exception(Exception_);
}
FilledBuffers_.Push(std::move(Buffer_));
Buffer_ = std::move(emptyBuffer.GetRef());
}
void TRetryfulWriter::Send(const TBuffer& buffer)
{
THttpHeader header("PUT", Command_);
header.SetInputFormat(Format_);
header.MergeParameters(Parameters_);
auto streamMaker = [&buffer] () {
return MakeHolder<TBufferInput>(buffer);
};
auto transactionId = (WriteTransaction_ ? WriteTransaction_->GetId() : ParentTransactionId_);
RetryHeavyWriteRequest(ClientRetryPolicy_, TransactionPinger_, Context_, transactionId, header, streamMaker);
Parameters_ = SecondaryParameters_; // all blocks except the first one are appended
}
void TRetryfulWriter::SendThread()
{
while (auto maybeBuffer = FilledBuffers_.Pop()) {
auto& buffer = maybeBuffer.GetRef();
try {
Send(buffer);
} catch (const std::exception&) {
Exception_ = std::current_exception();
EmptyBuffers_.Stop();
break;
}
buffer.Clear();
EmptyBuffers_.Push(std::move(buffer));
}
}
void* TRetryfulWriter::SendThread(void* opaque)
{
static_cast<TRetryfulWriter*>(opaque)->SendThread();
return nullptr;
}
void TRetryfulWriter::Abort()
{
if (Started_) {
FilledBuffers_.Stop();
Thread_.Join();
}
if (WriteTransaction_) {
WriteTransaction_->Abort();
}
WriterState_ = Completed;
}
size_t TRetryfulWriter::GetBufferSize(const TMaybe<TWriterOptions>& writerOptions)
{
auto retryBlockSize = TMaybe<size_t>();
if (writerOptions) {
if (writerOptions->RetryBlockSize_) {
retryBlockSize = *writerOptions->RetryBlockSize_;
} else if (writerOptions->DesiredChunkSize_) {
retryBlockSize = *writerOptions->DesiredChunkSize_;
}
}
return retryBlockSize.GetOrElse(64_MB);
}
////////////////////////////////////////////////////////////////////////////////
} // namespace NYT
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