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#include "yql_eval_params.h"
#include <yql/essentials/core/type_ann/type_ann_core.h>
#include <yql/essentials/core/type_ann/type_ann_expr.h>
#include <yql/essentials/providers/common/codec/yql_codec.h>
#include <yql/essentials/providers/common/schema/expr/yql_expr_schema.h>
#include <yql/essentials/providers/common/mkql/yql_type_mkql.h>
#include <yql/essentials/minikql/mkql_alloc.h>
#include <util/string/builder.h>
namespace NYql {
using namespace NKikimr;
using namespace NKikimr::NMiniKQL;
namespace {
bool BuildParameterValuesAsNodes(const THashMap<TStringBuf, const TTypeAnnotationNode*>& paramTypes,
const NYT::TNode& paramData, TExprContext& ctx, const IFunctionRegistry& functionRegistry,
THashMap<TStringBuf, TExprNode::TPtr>& paramValues) {
if (!paramData.IsMap()) {
ctx.AddError(TIssue({}, TStringBuilder() << "ParamData is not a map"));
return false;
}
TScopedAlloc alloc(__LOCATION__);
TTypeEnvironment env(alloc);
TMemoryUsageInfo memInfo("Parameters");
THolderFactory holderFactory(alloc.Ref(), memInfo);
bool isOk = true;
auto& paramDataMap = paramData.AsMap();
for (auto& p : paramTypes) {
auto name = p.first;
TStringStream err;
TProgramBuilder pgmBuilder(env, functionRegistry);
TType* mkqlType = NCommon::BuildType(*p.second, pgmBuilder, err);
if (!mkqlType) {
ctx.AddError(TIssue({}, TStringBuilder() << "Failed to process type for parameter: " << name << ", reason: " << err.Str()));
isOk = false;
continue;
}
const auto parameterItem = paramDataMap.FindPtr(name);
if (parameterItem && (!parameterItem->IsMap() || !parameterItem->HasKey("Data"))) {
ctx.AddError(TIssue({}, TStringBuilder() << "Parameter '" << name << "' value should be a map with key 'Data'"));
isOk = false;
continue;
}
if (!parameterItem && p.second->GetKind() != ETypeAnnotationKind::Optional && p.second->GetKind() != ETypeAnnotationKind::Null) {
ctx.AddError(TIssue({}, TStringBuilder() << "Missing value for parameter: " << name));
isOk = false;
continue;
}
auto value = parameterItem ? NCommon::ParseYsonNodeInResultFormat(holderFactory, (*parameterItem)["Data"], mkqlType, &err) : MakeMaybe(NUdf::TUnboxedValue());
if (!value) {
ctx.AddError(TIssue({}, TStringBuilder() << "Failed to parse data for parameter: " << name << ", reason: " << err.Str()));
isOk = false;
continue;
}
paramValues[name] = NCommon::ValueToExprLiteral(p.second, *value, ctx);
}
return isOk;
}
bool ExtractParameterTypes(const TExprNode::TPtr& input, TTypeAnnotationContext& types,
TExprContext& ctx, THashMap<TStringBuf, const TTypeAnnotationNode*>& paramTypes) {
auto callableTransformer = CreateExtCallableTypeAnnotationTransformer(types);
auto typeTransformer = CreateTypeAnnotationTransformer(callableTransformer, types);
TVector<TTransformStage> transformers;
const auto issueCode = TIssuesIds::CORE_TYPE_ANN;
transformers.push_back(TTransformStage(typeTransformer, "TypeAnnotation", issueCode));
auto fullTransformer = CreateCompositeGraphTransformer(transformers, false);
TOptimizeExprSettings settings(nullptr);
settings.VisitChanges = true;
TExprNode::TPtr output = input;
auto status1 = OptimizeExpr(input, output, [&](const TExprNode::TPtr& node, TExprContext& ctx)->TExprNode::TPtr {
if (!node->IsCallable("Parameter")) {
return node;
}
auto param = node;
fullTransformer->Rewind();
auto status = InstantTransform(*fullTransformer, param, ctx);
if (status.Level == IGraphTransformer::TStatus::Error) {
return nullptr;
}
auto name = param->Child(0)->Content();
if (!param->GetTypeAnn()) {
ctx.AddError(TIssue(ctx.GetPosition(param->Pos()), TStringBuilder() << "Failed to type check parameter: " << name));
return nullptr;
}
auto& type = paramTypes[name];
if (!type) {
type = param->GetTypeAnn();
} else if (!IsSameAnnotation(*type, *param->GetTypeAnn())) {
ctx.AddError(TIssue(ctx.GetPosition(param->Pos()), TStringBuilder() << "Mismatch of types: " << *type << " != " << *param->GetTypeAnn()
<< " for parameter: " << name));
return nullptr;
}
return param;
}, ctx, settings);
return status1.Level == IGraphTransformer::TStatus::Ok;
}
}
bool ExtractParametersMetaAsYson(const TExprNode::TPtr& input, TTypeAnnotationContext& types,
TExprContext& ctx, NYT::TNode& paramsMetaMap) {
THashMap<TStringBuf, const TTypeAnnotationNode*> params;
if (!ExtractParameterTypes(input, types, ctx, params)) {
return false;
}
for (auto& p : params) {
paramsMetaMap[p.first] = NCommon::TypeToYsonNode(p.second);
}
return true;
}
IGraphTransformer::TStatus EvaluateParameters(const TExprNode::TPtr& input, TExprNode::TPtr& output,
TTypeAnnotationContext& types, TExprContext& ctx, const IFunctionRegistry& functionRegistry) {
output = input;
if (ctx.Step.IsDone(TExprStep::Params)) {
return IGraphTransformer::TStatus::Ok;
}
THashMap<TStringBuf, const TTypeAnnotationNode*> paramTypes;
if (!ExtractParameterTypes(input, types, ctx, paramTypes)) {
return IGraphTransformer::TStatus::Error;
}
if (!paramTypes) {
// no params - just exit
return IGraphTransformer::TStatus::Ok;
}
const auto emptyMapNode = NYT::TNode::CreateMap();
const auto& paramData = types.OperationOptions.ParametersYson.GetOrElse(emptyMapNode);
THashMap<TStringBuf, TExprNode::TPtr> paramValues;
if (!BuildParameterValuesAsNodes(paramTypes, paramData, ctx, functionRegistry, paramValues)) {
return IGraphTransformer::TStatus::Error;
}
// inject param values into graph
TOptimizeExprSettings settings(nullptr);
settings.VisitChanges = true;
auto status = OptimizeExpr(output, output, [&](const TExprNode::TPtr& node, TExprContext& ctx)->TExprNode::TPtr {
if (!node->IsCallable("Parameter")) {
return node;
}
auto name = node->Child(0)->Content();
auto evaluated = paramValues.FindPtr(name);
YQL_ENSURE(evaluated, "Missing parameter value: " << name);
return ctx.ShallowCopyWithPosition(**evaluated, node->Pos());
}, ctx, settings);
if (status.Level == IGraphTransformer::TStatus::Error) {
return status;
}
ctx.Step.Done(TExprStep::Params);
return IGraphTransformer::TStatus::Ok;
}
} // namespace NYql
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