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#pragma once
#include <yql/essentials/minikql/mkql_stats_registry.h>
#include <yql/essentials/utils/yql_panic.h>
#include <library/cpp/yson/zigzag.h>
#include <util/generic/yexception.h>
#include <util/generic/maybe.h>
#ifndef LLVM_BC
#include <util/datetime/base.h>
#else
using TInstant = ui64;
#endif
#include <util/generic/vector.h>
#include <utility>
#include <functional>
#include <optional>
namespace NYql {
namespace NCommon {
class TTimeoutException : public yexception {
};
struct IBlockReader {
virtual ~IBlockReader() = default;
virtual void SetDeadline(TInstant deadline) = 0;
virtual std::pair<const char*, const char*> NextFilledBlock() = 0;
virtual void ReturnBlock() = 0;
virtual bool Retry(const TMaybe<ui32>& rangeIndex, const TMaybe<ui64>& rowIndex, const std::exception_ptr& error) = 0;
};
struct IBlockWriter {
virtual ~IBlockWriter() = default;
virtual void SetRecordBoundaryCallback(std::function<void()> callback) = 0;
virtual std::pair<char*, char*> NextEmptyBlock() = 0;
virtual void ReturnBlock(size_t avail, std::optional<size_t> lastRecordBoundary) = 0;
virtual void Finish() = 0;
};
//////////////////////////////////////////////////////////////////////////////////////////////////////////
extern NKikimr::NMiniKQL::TStatKey InputBytes;
class TInputBuf;
extern "C" char InputBufReadSlowThunk(TInputBuf& in);
extern "C" void InputBufReadManySlowThunk(TInputBuf& in, char* buffer, size_t count);
extern "C" void InputBufSkipManySlowThunk(TInputBuf& in, size_t count);
class TInputBuf {
friend char InputBufReadSlowThunk(TInputBuf& in);
friend void InputBufReadManySlowThunk(TInputBuf& in, char* buffer, size_t count);
friend void InputBufSkipManySlowThunk(TInputBuf& in, size_t count);
public:
TInputBuf(NKikimr::NMiniKQL::TSamplingStatTimer* readTimer)
: ReadTimer_(readTimer)
{}
TInputBuf(IBlockReader& source, NKikimr::NMiniKQL::TSamplingStatTimer* readTimer)
: TInputBuf(readTimer)
{
SetSource(source);
}
void SetSource(IBlockReader& source) {
Source_ = &source;
Current_ = nullptr;
End_ = nullptr;
String_.clear();
}
void SetStats(NKikimr::NMiniKQL::IStatsRegistry* jobStats) {
JobStats_ = jobStats;
}
void SetNextBlockCallback(std::function<void()> cb) {
OnNextBlockCallback_ = std::move(cb);
}
bool TryRead(char& value) {
if (Y_LIKELY(Current_ < End_)) {
value = *Current_++;
return true;
}
return TryReadSlow(value);
}
char Read() {
if (Y_LIKELY(Current_ < End_)) {
return *Current_++;
}
return InputBufReadSlowThunk(*this);
}
ui32 ReadVarUI32() {
char cmd = Read();
if (Y_LIKELY(!(cmd & 0x80))) {
return cmd;
}
return ReadVarUI32Slow(cmd);
}
ui32 CopyVarUI32(TVector<char>& yson);
ui64 CopyVarUI64(TVector<char>& yson);
ui32 ReadVarUI32Slow(char cmd);
ui64 ReadVarUI64() {
char cmd = Read();
if (Y_LIKELY(!(cmd & 0x80))) {
return cmd;
}
return ReadVarUI64Slow(cmd);
}
ui64 ReadVarUI64Slow(char cmd);
i64 ReadVarI64() {
return NYson::ZigZagDecode64(ReadVarUI64());
}
i32 ReadVarI32() {
return NYson::ZigZagDecode32(ReadVarUI32());
}
i64 CopyVarI64(TVector<char>& yson) {
return NYson::ZigZagDecode64(CopyVarUI64(yson));
}
i32 CopyVarI32(TVector<char>& yson) {
return NYson::ZigZagDecode32(CopyVarUI32(yson));
}
TStringBuf ReadYtString(ui32 lookAhead = 0);
TVector<char>& YsonBuffer() {
return String_;
}
void ReadMany(char* buffer, size_t count) {
if (Y_LIKELY(Current_ + count <= End_)) {
memcpy(buffer, Current_, count);
Current_ += count;
return;
}
return InputBufReadManySlowThunk(*this, buffer, count);
}
void SkipMany(size_t count) {
if (Y_LIKELY(Current_ + count <= End_)) {
Current_ += count;
return;
}
return InputBufSkipManySlowThunk(*this, count);
}
void CopyMany(size_t count, TVector<char>& yson) {
auto origSize = yson.size();
yson.resize(origSize + count);
ReadMany(yson.data() + origSize, count);
}
// Call it on error
void Reset();
private:
void Fill();
bool TryReadSlow(char& value);
char ReadSlow();
void ReadManySlow(char* buffer, size_t count);
void SkipManySlow(size_t count);
private:
IBlockReader* Source_ = nullptr;
NKikimr::NMiniKQL::TSamplingStatTimer* ReadTimer_;
NKikimr::NMiniKQL::IStatsRegistry* JobStats_ = nullptr;
const char* Current_ = nullptr;
const char* End_ = nullptr;
TVector<char> String_;
std::function<void()> OnNextBlockCallback_;
};
//////////////////////////////////////////////////////////////////////////////////////////////////////////
extern NKikimr::NMiniKQL::TStatKey OutputBytes;
class TOutputBuf;
extern "C" void OutputBufFlushThunk(TOutputBuf& out);
extern "C" void OutputBufWriteManySlowThunk(TOutputBuf& out, const char* buffer, size_t count);
class TOutputBuf {
friend void OutputBufWriteManySlowThunk(TOutputBuf& out, const char* buffer, size_t count);
public:
TOutputBuf(IBlockWriter& target, NKikimr::NMiniKQL::TStatTimer* writeTimer);
ui64 GetWrittenBytes() const {
return WrittenBytes_;
}
void SetStats(NKikimr::NMiniKQL::IStatsRegistry* jobStats) {
JobStats_ = jobStats;
}
void Write(char value) {
if (Y_LIKELY(Current_ < End_)) {
*Current_++ = value;
return;
}
WriteSlow(value);
}
void WriteMany(TStringBuf str) {
WriteMany(str.data(), str.size());
}
void WriteMany(const char* buffer, size_t count) {
if (Y_LIKELY(Current_ + count <= End_)) {
memcpy(Current_, buffer, count);
Current_ += count;
return;
}
OutputBufWriteManySlowThunk(*this, buffer, count);
}
void WriteVarI32(i32 value) {
WriteVarUI32(NYson::ZigZagEncode32(value));
}
void WriteVarI64(i64 value) {
WriteVarUI64(NYson::ZigZagEncode64(value));
}
void WriteVarUI32(ui32 value);
void WriteVarUI64(ui64 value);
void Flush();
void Finish() {
Flush();
if (WriteTimer_) {
WriteTimer_->Acquire();
}
Target_.Finish();
if (WriteTimer_) {
WriteTimer_->Release();
}
}
void OnRecordBoundary() {
RecordBoundary_ = Current_;
}
private:
void WriteSlow(char value) {
OutputBufFlushThunk(*this);
*Current_++ = value;
}
void WriteManySlow(const char* buffer, size_t count);
private:
IBlockWriter& Target_;
NKikimr::NMiniKQL::TStatTimer* WriteTimer_;
NKikimr::NMiniKQL::IStatsRegistry* JobStats_ = nullptr;
char* Begin_ = nullptr;
char* Current_ = nullptr;
char* End_ = nullptr;
char* RecordBoundary_ = nullptr;
ui64 WrittenBytes_ = 0;
};
#define CHECK_EXPECTED(read, expected) \
YQL_ENSURE(read == expected, "Expected char: " << TString(1, expected).Quote() << ", but read: " << TString(1, read).Quote());
#define EXPECTED(buf, expected) \
{ char read = buf.Read(); CHECK_EXPECTED(read, expected); }
#define EXPECTED_COPY(buf, expected, yson) \
{ char read = buf.Read(); CHECK_EXPECTED(read, expected); yson.push_back(read); }
#define CHECK_STRING_LENGTH(length) \
YQL_ENSURE(length >= 0 && length < (1 << 30), "Bad string length: " << length);
#define CHECK_STRING_LENGTH_UNSIGNED(length) \
YQL_ENSURE(length < (1 << 30), "Bad string length: " << length);
} // NCommon
} // NYql
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