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Merged
merged 1 commit into from
Jan 26, 2024
Merged

Table partition writer skeleton KIKIMR-20673 #1322

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81 changes: 65 additions & 16 deletions ydb/core/tx/replication/service/json_change_record.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -33,6 +33,40 @@ NChangeExchange::IChangeRecord::EKind TChangeRecord::GetKind() const {
: EKind::CdcDataChange;
}

static bool ParseKey(TVector<TCell>& cells,
const NJson::TJsonValue::TArray& key, TLightweightSchema::TCPtr schema, TMemoryPool& pool, TString& error)
{
cells.resize(key.size());

Y_ABORT_UNLESS(key.size() == schema->KeyColumns.size());
for (ui32 i = 0; i < key.size(); ++i) {
if (!NFormats::MakeCell(cells[i], key[i], schema->KeyColumns[i], pool, error)) {
return false;
}
}

return true;
}

static bool ParseValue(TVector<NTable::TTag>& tags, TVector<TCell>& cells,
const NJson::TJsonValue::TMapType& value, TLightweightSchema::TCPtr schema, TMemoryPool& pool, TString& error)
{
tags.reserve(value.size());
cells.reserve(value.size());

for (const auto& [column, value] : value) {
auto it = schema->ValueColumns.find(column);
Y_ABORT_UNLESS(it != schema->ValueColumns.end());

tags.push_back(it->second.Tag);
if (!NFormats::MakeCell(cells.emplace_back(), value, it->second.Type, pool, error)) {
return false;
}
}

return true;
}

void TChangeRecord::Serialize(NKikimrTxDataShard::TEvApplyReplicationChanges::TChange& record) const {
record.SetSourceOffset(GetOrder());
// TODO: fill WriteTxId
Expand All @@ -42,13 +76,10 @@ void TChangeRecord::Serialize(NKikimrTxDataShard::TEvApplyReplicationChanges::TC

if (JsonBody.Has("key") && JsonBody["key"].IsArray()) {
const auto& key = JsonBody["key"].GetArray();
Y_ABORT_UNLESS(key.size() == Schema->KeyColumns.size());
TVector<TCell> cells;

TVector<TCell> cells(key.size());
for (ui32 i = 0; i < key.size(); ++i) {
auto res = NFormats::MakeCell(cells[i], key[i], Schema->KeyColumns[i], pool, error);
Y_ABORT_UNLESS(res);
}
auto res = ParseKey(cells, key, Schema, pool, error);
Y_ABORT_UNLESS(res);

record.SetKey(TSerializedCellVec::Serialize(cells));
} else {
Expand All @@ -57,18 +88,14 @@ void TChangeRecord::Serialize(NKikimrTxDataShard::TEvApplyReplicationChanges::TC

if (JsonBody.Has("update") && JsonBody["update"].IsMap()) {
const auto& update = JsonBody["update"].GetMap();
auto& upsert = *record.MutableUpsert();

TVector<TCell> cells(::Reserve(update.size()));
for (const auto& [column, value] : update) {
auto it = Schema->ValueColumns.find(column);
Y_ABORT_UNLESS(it != Schema->ValueColumns.end());
TVector<NTable::TTag> tags;
TVector<TCell> cells;

upsert.AddTags(it->second.Tag);
auto res = NFormats::MakeCell(cells.emplace_back(), value, it->second.Type, pool, error);
Y_ABORT_UNLESS(res);
}
auto res = ParseValue(tags, cells, update, Schema, pool, error);
Y_ABORT_UNLESS(res);

auto& upsert = *record.MutableUpsert();
*upsert.MutableTags() = {tags.begin(), tags.end()};
upsert.SetData(TSerializedCellVec::Serialize(cells));
} else if (JsonBody.Has("erase")) {
record.MutableErase();
Expand All @@ -77,4 +104,26 @@ void TChangeRecord::Serialize(NKikimrTxDataShard::TEvApplyReplicationChanges::TC
}
}

TConstArrayRef<TCell> TChangeRecord::GetKey() const {
if (!Key) {
TMemoryPool pool(256);
TString error;

if (JsonBody.Has("key") && JsonBody["key"].IsArray()) {
const auto& key = JsonBody["key"].GetArray();
TVector<TCell> cells;

auto res = ParseKey(cells, key, Schema, pool, error);
Y_ABORT_UNLESS(res);

Key.ConstructInPlace(cells);
} else {
Y_ABORT("Malformed json record");
}
}

Y_ABORT_UNLESS(Key);
return *Key;
}

}
6 changes: 6 additions & 0 deletions ydb/core/tx/replication/service/json_change_record.h
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Original file line number Diff line number Diff line change
Expand Up @@ -2,12 +2,14 @@

#include <ydb/core/change_exchange/change_record.h>
#include <ydb/core/protos/tx_datashard.pb.h>
#include <ydb/core/scheme/scheme_tablecell.h>
#include <ydb/core/scheme_types/scheme_type_info.h>
#include <ydb/core/tablet_flat/flat_row_eggs.h>

#include <library/cpp/json/json_reader.h>

#include <util/generic/hash.h>
#include <util/generic/maybe.h>
#include <util/generic/ptr.h>
#include <util/generic/vector.h>

Expand Down Expand Up @@ -39,10 +41,14 @@ class TChangeRecord: public NChangeExchange::TChangeRecordBase {

void Serialize(NKikimrTxDataShard::TEvApplyReplicationChanges::TChange& record) const;

TConstArrayRef<TCell> GetKey() const;

private:
NJson::TJsonValue JsonBody;
TLightweightSchema::TCPtr Schema;

mutable TMaybe<TOwnedCellVec> Key;

}; // TChangeRecord

class TChangeRecordBuilder: public NChangeExchange::TChangeRecordBuilder<TChangeRecord, TChangeRecordBuilder> {
Expand Down
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