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#pragma once
#include <yql/essentials/public/purecalc/common/interface.h>
#include <yql/essentials/public/purecalc/helpers/protobuf/schema_from_proto.h>
#include <google/protobuf/message.h>
#include <util/generic/maybe.h>
namespace NYql {
namespace NPureCalc {
/**
* Processing mode for working with raw protobuf message inputs.
*
* In this mode purecalc accept pointers to abstract protobuf messages and processes them using the reflection
* mechanism. All passed messages should have the same descriptor (the one you pass to the constructor
* of the input spec).
*
* All working modes are implemented. In pull stream and pull list modes a program would accept a single object
* stream of const protobuf messages. In push mode, a program will return a consumer of const protobuf messages.
*
* The program synopsis follows:
*
* @code
* ... TPullStreamProgram::Apply(IStream<google::protobuf::Message*>);
* ... TPullListProgram::Apply(IStream<google::protobuf::Message*>);
* TConsumer<google::protobuf::Message*> TPushStreamProgram::Apply(...);
* @endcode
*/
class TProtobufRawInputSpec: public TInputSpecBase {
private:
const google::protobuf::Descriptor& Descriptor_;
const TMaybe<TString> TimestampColumn_;
const TProtoSchemaOptions SchemaOptions_;
mutable TVector<NYT::TNode> SavedSchemas_;
public:
/**
* Build input spec and associate the given message descriptor.
*/
explicit TProtobufRawInputSpec(
const google::protobuf::Descriptor& descriptor,
const TMaybe<TString>& timestampColumn = Nothing(),
const TProtoSchemaOptions& options = {}
);
public:
const TVector<NYT::TNode>& GetSchemas() const override;
/**
* Get the descriptor associated with this spec.
*/
const google::protobuf::Descriptor& GetDescriptor() const;
const TMaybe<TString>& GetTimestampColumn() const;
/*
* Get options that customize input struct type building.
*/
const TProtoSchemaOptions& GetSchemaOptions() const;
};
/**
* Processing mode for working with raw protobuf message outputs.
*
* In this mode purecalc yields pointers to abstract protobuf messages. All generated messages share the same
* descriptor so they can be safely converted into an appropriate message type.
*
* Note that one should not expect that the returned pointer will be valid forever; in can (and will) become
* outdated once a new output is requested/pushed.
*
* All working modes are implemented. In pull stream and pull list modes a program will return an object
* stream of non-const protobuf messages. In push mode, it will accept a single consumer of non-const
* messages.
*
* The program synopsis follows:
*
* @code
* IStream<google::protobuf::Message*> TPullStreamProgram::Apply(...);
* IStream<google::protobuf::Message*> TPullListProgram::Apply(...);
* ... TPushStreamProgram::Apply(TConsumer<google::protobuf::Message*>);
* @endcode
*/
class TProtobufRawOutputSpec: public TOutputSpecBase {
private:
const google::protobuf::Descriptor& Descriptor_;
google::protobuf::MessageFactory* Factory_;
TProtoSchemaOptions SchemaOptions_;
google::protobuf::Arena* Arena_;
mutable TMaybe<NYT::TNode> SavedSchema_;
public:
/**
* Build output spec and associate the given message descriptor and maybe the given message factory.
*/
explicit TProtobufRawOutputSpec(
const google::protobuf::Descriptor& descriptor,
google::protobuf::MessageFactory* = nullptr,
const TProtoSchemaOptions& options = {},
google::protobuf::Arena* arena = nullptr
);
public:
const NYT::TNode& GetSchema() const override;
/**
* Get the descriptor associated with this spec.
*/
const google::protobuf::Descriptor& GetDescriptor() const;
/**
* Set a new message factory which will be used to generate messages. Pass a null pointer to use the
* default factory.
*/
void SetFactory(google::protobuf::MessageFactory*);
/**
* Get the message factory which is currently associated with this spec.
*/
google::protobuf::MessageFactory* GetFactory() const;
/**
* Set a new arena which will be used to generate messages. Pass a null pointer to create on the heap.
*/
void SetArena(google::protobuf::Arena*);
/**
* Get the arena which is currently associated with this spec.
*/
google::protobuf::Arena* GetArena() const;
/**
* Get options that customize output struct type building.
*/
const TProtoSchemaOptions& GetSchemaOptions() const;
};
/**
* Processing mode for working with raw protobuf messages and several outputs.
*
* The program synopsis follows:
*
* @code
* IStream<std::pair<ui32, google::protobuf::Message*>> TPullStreamProgram::Apply(...);
* IStream<std::pair<ui32, google::protobuf::Message*>> TPullListProgram::Apply(...);
* ... TPushStreamProgram::Apply(TConsumer<std::pair<ui32, google::protobuf::Message*>>);
* @endcode
*/
class TProtobufRawMultiOutputSpec: public TOutputSpecBase {
private:
TVector<const google::protobuf::Descriptor*> Descriptors_;
TVector<google::protobuf::MessageFactory*> Factories_;
const TProtoSchemaOptions SchemaOptions_;
TVector<google::protobuf::Arena*> Arenas_;
mutable NYT::TNode SavedSchema_;
public:
TProtobufRawMultiOutputSpec(
TVector<const google::protobuf::Descriptor*>,
TMaybe<TVector<google::protobuf::MessageFactory*>> = {},
const TProtoSchemaOptions& options = {},
TMaybe<TVector<google::protobuf::Arena*>> arenas = {}
);
public:
const NYT::TNode& GetSchema() const override;
/**
* Get the descriptor associated with given output.
*/
const google::protobuf::Descriptor& GetDescriptor(ui32) const;
/**
* Set a new message factory for given output. It will be used to generate messages for this output.
*/
void SetFactory(ui32, google::protobuf::MessageFactory*);
/**
* Get the message factory which is currently associated with given output.
*/
google::protobuf::MessageFactory* GetFactory(ui32) const;
/**
* Set a new arena for given output. It will be used to generate messages for this output.
*/
void SetArena(ui32, google::protobuf::Arena*);
/**
* Get the arena which is currently associated with given output.
*/
google::protobuf::Arena* GetArena(ui32) const;
/**
* Get number of outputs for this spec.
*/
ui32 GetOutputsNumber() const;
/**
* Get options that customize output struct type building.
*/
const TProtoSchemaOptions& GetSchemaOptions() const;
};
template <>
struct TInputSpecTraits<TProtobufRawInputSpec> {
static const constexpr bool IsPartial = false;
static const constexpr bool SupportPullStreamMode = true;
static const constexpr bool SupportPullListMode = true;
static const constexpr bool SupportPushStreamMode = true;
using TConsumerType = THolder<IConsumer<google::protobuf::Message*>>;
static void PreparePullStreamWorker(const TProtobufRawInputSpec&, IPullStreamWorker*, THolder<IStream<google::protobuf::Message*>>);
static void PreparePullListWorker(const TProtobufRawInputSpec&, IPullListWorker*, THolder<IStream<google::protobuf::Message*>>);
static TConsumerType MakeConsumer(const TProtobufRawInputSpec&, TWorkerHolder<IPushStreamWorker>);
};
template <>
struct TOutputSpecTraits<TProtobufRawOutputSpec> {
static const constexpr bool IsPartial = false;
static const constexpr bool SupportPullStreamMode = true;
static const constexpr bool SupportPullListMode = true;
static const constexpr bool SupportPushStreamMode = true;
using TOutputItemType = google::protobuf::Message*;
using TPullStreamReturnType = THolder<IStream<TOutputItemType>>;
using TPullListReturnType = THolder<IStream<TOutputItemType>>;
static const constexpr TOutputItemType StreamSentinel = nullptr;
static TPullStreamReturnType ConvertPullStreamWorkerToOutputType(const TProtobufRawOutputSpec&, TWorkerHolder<IPullStreamWorker>);
static TPullListReturnType ConvertPullListWorkerToOutputType(const TProtobufRawOutputSpec&, TWorkerHolder<IPullListWorker>);
static void SetConsumerToWorker(const TProtobufRawOutputSpec&, IPushStreamWorker*, THolder<IConsumer<TOutputItemType>>);
};
template <>
struct TOutputSpecTraits<TProtobufRawMultiOutputSpec> {
static const constexpr bool IsPartial = false;
static const constexpr bool SupportPullStreamMode = true;
static const constexpr bool SupportPullListMode = true;
static const constexpr bool SupportPushStreamMode = true;
using TOutputItemType = std::pair<ui32, google::protobuf::Message*>;
using TPullStreamReturnType = THolder<IStream<TOutputItemType>>;
using TPullListReturnType = THolder<IStream<TOutputItemType>>;
static const constexpr TOutputItemType StreamSentinel = {0, nullptr};
static TPullStreamReturnType ConvertPullStreamWorkerToOutputType(const TProtobufRawMultiOutputSpec&, TWorkerHolder<IPullStreamWorker>);
static TPullListReturnType ConvertPullListWorkerToOutputType(const TProtobufRawMultiOutputSpec&, TWorkerHolder<IPullListWorker>);
static void SetConsumerToWorker(const TProtobufRawMultiOutputSpec&, IPushStreamWorker*, THolder<IConsumer<TOutputItemType>>);
};
}
}
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