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#include "mkql_random.h"
#include <yql/essentials/minikql/computation/mkql_computation_node_holders.h>
#include <yql/essentials/minikql/computation/mkql_computation_node_holders_codegen.h>
#include <yql/essentials/minikql/mkql_node_cast.h>
#include <yql/essentials/minikql/mkql_program_builder.h>
#include <yql/essentials/minikql/mkql_string_util.h>
#include <util/random/mersenne.h>
namespace NKikimr {
namespace NMiniKQL {
namespace {
class TRandomMTResource : public TComputationValue<TRandomMTResource> {
public:
TRandomMTResource(TMemoryUsageInfo* memInfo, ui64 seed)
: TComputationValue(memInfo)
, Gen(seed)
{
}
private:
NUdf::TStringRef GetResourceTag() const override {
return NUdf::TStringRef(RandomMTResource);
}
void* GetResource() override {
return &Gen;
}
TMersenne<ui64> Gen;
};
class TNewMTRandWrapper : public TMutableComputationNode<TNewMTRandWrapper> {
typedef TMutableComputationNode<TNewMTRandWrapper> TBaseComputation;
public:
TNewMTRandWrapper(TComputationMutables& mutables, IComputationNode* seed)
: TBaseComputation(mutables)
, Seed(seed)
{
}
NUdf::TUnboxedValuePod DoCalculate(TComputationContext& compCtx) const {
const ui64 seedValue = Seed->GetValue(compCtx).Get<ui64>();
return compCtx.HolderFactory.Create<TRandomMTResource>(seedValue);
}
private:
void RegisterDependencies() const final {
DependsOn(Seed);
}
IComputationNode* const Seed;
};
class TNextMTRandWrapper : public TMutableComputationNode<TNextMTRandWrapper> {
typedef TMutableComputationNode<TNextMTRandWrapper> TBaseComputation;
public:
TNextMTRandWrapper(TComputationMutables& mutables, IComputationNode* rand)
: TBaseComputation(mutables)
, Rand(rand)
, ResPair(mutables)
{
}
NUdf::TUnboxedValue DoCalculate(TComputationContext& compCtx) const {
auto rand = Rand->GetValue(compCtx);
Y_DEBUG_ABORT_UNLESS(rand.GetResourceTag() == NUdf::TStringRef(RandomMTResource));
NUdf::TUnboxedValue *items = nullptr;
const auto tuple = ResPair.NewArray(compCtx, 2, items);
items[0] = NUdf::TUnboxedValuePod(static_cast<TMersenne<ui64>*>(rand.GetResource())->GenRand());
items[1] = std::move(rand);
return tuple;
}
private:
void RegisterDependencies() const final {
DependsOn(Rand);
}
IComputationNode* const Rand;
const TContainerCacheOnContext ResPair;
};
template <ERandom Rnd>
class TRandomWrapper : public TMutableComputationNode<TRandomWrapper<Rnd>> {
typedef TMutableComputationNode<TRandomWrapper<Rnd>> TBaseComputation;
public:
TRandomWrapper(TComputationMutables& mutables, TComputationNodePtrVector&& dependentNodes)
: TBaseComputation(mutables)
, DependentNodes(dependentNodes)
{
}
NUdf::TUnboxedValuePod DoCalculate(TComputationContext& ctx) const {
switch (Rnd) {
case ERandom::Double:
return NUdf::TUnboxedValuePod(ctx.RandomProvider.GenRandReal2());
case ERandom::Number:
return NUdf::TUnboxedValuePod(ctx.RandomProvider.GenRand64());
case ERandom::Uuid: {
auto uuid = ctx.RandomProvider.GenUuid4();
return MakeString(NUdf::TStringRef((const char*)&uuid, sizeof(uuid)));
}
}
Y_ABORT("Unexpected");
}
private:
void RegisterDependencies() const final {
std::for_each(DependentNodes.cbegin(), DependentNodes.cend(), std::bind(&TRandomWrapper::DependsOn, this, std::placeholders::_1));
}
const TComputationNodePtrVector DependentNodes;
};
}
IComputationNode* WrapNewMTRand(TCallable& callable, const TComputationNodeFactoryContext& ctx) {
MKQL_ENSURE(callable.GetInputsCount() == 1, "Expected 1 arg");
TDataType* dataType = AS_TYPE(TDataType, callable.GetInput(0));
MKQL_ENSURE(dataType->GetSchemeType() == NUdf::TDataType<ui64>::Id,
"Expected ui64");
auto data = LocateNode(ctx.NodeLocator, callable, 0);
return new TNewMTRandWrapper(ctx.Mutables, data);
}
IComputationNode* WrapNextMTRand(TCallable& callable, const TComputationNodeFactoryContext& ctx) {
MKQL_ENSURE(callable.GetInputsCount() == 1, "Expected 1 arg");
AS_TYPE(TResourceType, callable.GetInput(0));
auto rand = LocateNode(ctx.NodeLocator, callable, 0);
return new TNextMTRandWrapper(ctx.Mutables, rand);
}
template <ERandom Rnd>
IComputationNode* WrapRandom(TCallable& callable, const TComputationNodeFactoryContext& ctx) {
TComputationNodePtrVector dependentNodes(callable.GetInputsCount());
for (ui32 i = 0; i < callable.GetInputsCount(); ++i) {
dependentNodes[i] = LocateNode(ctx.NodeLocator, callable, i);
}
return new TRandomWrapper<Rnd>(ctx.Mutables, std::move(dependentNodes));
}
template
IComputationNode* WrapRandom<ERandom::Double>(TCallable& callable, const TComputationNodeFactoryContext& ctx);
template
IComputationNode* WrapRandom<ERandom::Number>(TCallable& callable, const TComputationNodeFactoryContext& ctx);
template
IComputationNode* WrapRandom<ERandom::Uuid>(TCallable& callable, const TComputationNodeFactoryContext& ctx);
}
}
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