Source.h

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//
// MetricsSourceArray.h
//
// Created on July 18th 2018
//
// Copyright 2018 CFM (www.cfm.fr)
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
//     http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
//

#pragma once

#include <string>
#include <string_view>
#include <vector>

#include "MetricTypes.h"
#include "SourceField.h"
#include "SourceInterests.h"
#include "SourceTools.h"


namespace MetroCollect::MetricsSource {
    class SourceBase {
        protected:
            SourceBase() {}         
            ~SourceBase() {}        

        public:
            SourceBase(const SourceBase&) = delete;         
            void operator=(const SourceBase&) = delete;     


            virtual size_t fieldCount() const noexcept = 0;

            virtual const std::vector<size_t> indexesOfFieldName(const FieldName& fieldName, Interests* interests = nullptr) const noexcept = 0;

            virtual const std::string fieldNameSourcePrefix() const noexcept = 0;

            virtual const FieldInfo fieldInfoAtIndex(size_t index) const noexcept = 0;

            virtual const std::vector<FieldInfo> allFieldsInfo() const noexcept = 0;


            virtual void fetchData(const Interests& interests, DataArray::Iterator current) = 0;


            virtual void computeDiff(const Interests& interests, DiffArray::Iterator diff, DataArray::ConstIterator current, DataArray::ConstIterator previous, double factor = 1) noexcept = 0;
    };
}