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#pragma once
#include <util/stream/walk.h>
#include <util/system/types.h>
#include <util/generic/string.h>
#include <library/cpp/actors/util/rope.h>
#include <library/cpp/actors/wilson/wilson_trace.h>
namespace NActors {
class IEventHandle;
struct TConstIoVec {
const void* Data;
size_t Size;
};
struct TIoVec {
void* Data;
size_t Size;
};
struct TEventSectionInfo {
size_t Headroom = 0; // headroom to be created on the receiving side
size_t Size = 0; // full size of serialized event section (a chunk in rope)
size_t Tailroom = 0; // tailroom for the chunk
size_t Alignment = 0; // required alignment
};
struct TEventSerializationInfo {
bool IsExtendedFormat = {};
std::vector<TEventSectionInfo> Sections;
// total sum of Size for every section must match actual serialized size of the event
};
class TEventSerializedData
: public TThrRefBase
{
TRope Rope;
TEventSerializationInfo SerializationInfo;
public:
TEventSerializedData() = default;
TEventSerializedData(TRope&& rope, TEventSerializationInfo&& serializationInfo)
: Rope(std::move(rope))
, SerializationInfo(std::move(serializationInfo))
{}
TEventSerializedData(const TEventSerializedData& original, TString extraBuffer)
: Rope(original.Rope)
, SerializationInfo(original.SerializationInfo)
{
if (!SerializationInfo.Sections.empty()) {
SerializationInfo.Sections.push_back(TEventSectionInfo{0, extraBuffer.size(), 0, 0});
}
Append(std::move(extraBuffer));
}
TEventSerializedData(TString buffer, TEventSerializationInfo&& serializationInfo)
: SerializationInfo(std::move(serializationInfo))
{
Append(std::move(buffer));
}
void SetSerializationInfo(TEventSerializationInfo&& serializationInfo) {
SerializationInfo = std::move(serializationInfo);
}
const TEventSerializationInfo& GetSerializationInfo() const {
return SerializationInfo;
}
TRope::TConstIterator GetBeginIter() const {
return Rope.Begin();
}
size_t GetSize() const {
return Rope.GetSize();
}
TString GetString() const {
TString result;
result.reserve(GetSize());
for (auto it = Rope.Begin(); it.Valid(); it.AdvanceToNextContiguousBlock()) {
result.append(it.ContiguousData(), it.ContiguousSize());
}
return result;
}
TRope GetRope() const {
return TRope(Rope);
}
TRope EraseBack(size_t count) {
Y_VERIFY(count <= Rope.GetSize());
TRope::TIterator iter = Rope.End();
iter -= count;
return Rope.Extract(iter, Rope.End());
}
void Append(TRope&& from) {
Rope.Insert(Rope.End(), std::move(from));
}
void Append(TString buffer) {
if (buffer) {
Rope.Insert(Rope.End(), TRope(std::move(buffer)));
}
}
};
}
class TChainBufWalk : public IWalkInput {
TIntrusivePtr<NActors::TEventSerializedData> Buffer;
TRope::TConstIterator Iter;
public:
TChainBufWalk(TIntrusivePtr<NActors::TEventSerializedData> buffer)
: Buffer(std::move(buffer))
, Iter(Buffer->GetBeginIter())
{}
private:
size_t DoUnboundedNext(const void **ptr) override {
const size_t size = Iter.ContiguousSize();
*ptr = Iter.ContiguousData();
if (Iter.Valid()) {
Iter.AdvanceToNextContiguousBlock();
}
return size;
}
};
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