module import { UAVariable } from "node-opcua-address-space" ; import { assert } from "node-opcua-assert" ; import { DataValue } from "node-opcua-data-value" ; import { StatusCode , StatusCodes } from "node-opcua-status-code" ; import { getAggregateData , interpolateValue } from "./common" ; import { _findGoodDataValueBefore , adjustProcessingOptions , AggregateConfigurationOptionsEx , Interval , isBad , isGood } from "./interval" ; export function interpolatedValue ( interval , options ) { options = adjustProcessingOptions ( options ) ; assert ( Object . prototype . hasOwnProperty . call ( options , "useSlopedExtrapolation" ) ) ; assert ( Object . prototype . hasOwnProperty . call ( options , "treatUncertainAsBad" ) ) ; const bTreatUncertainAsBad = options . treatUncertainAsBad ! ; const steppedValue = ( previousDataValue ) : DataValue => { if ( ! previousDataValue . statusCode ) { throw new Error ( "Expecting statusCode" ) ; } const interpValue = new DataValue ( { sourceTimestamp : interval . startTime , statusCode : StatusCodes . Bad , value : previousDataValue . value } ) ; interpValue . statusCode = StatusCode . makeStatusCode ( StatusCodes . UncertainDataSubNormal , "HistorianInterpolated" ) ; return interpValue ; } ; if ( interval . index === - 1 ) { const prev1 = _findGoodDataValueBefore ( interval . dataValues , interval . dataValues . length , bTreatUncertainAsBad ) ; if ( prev1 . index <= 0 ) { return new DataValue ( { sourceTimestamp : interval . startTime , statusCode : StatusCodes . BadNoData , value : undefined } ) ; } if ( ! options . useSlopedExtrapolation ) { return steppedValue ( prev1 . dataValue ) ; } const prev2 = _findGoodDataValueBefore ( interval . dataValues , prev1 . index , bTreatUncertainAsBad ) ; if ( prev2 . index <= 0 ) { return steppedValue ( prev1 . dataValue ) ; } const interpVal = interpolateValue ( prev2 . dataValue , prev1 . dataValue , interval . startTime ) ; if ( prev2 . index + 1 < prev1 . index || prev1 . index < interval . dataValues . length - 1 ) { const mask = 0x0000ffffff ; const extraBits = interpVal . statusCode . value & mask ; interpVal . statusCode = StatusCode . makeStatusCode ( StatusCodes . UncertainDataSubNormal , extraBits ) ; } return interpVal ; } if ( interval . index < 0 && interval . count === 0 ) { return new DataValue ( { sourceTimestamp : interval . startTime , statusCode : StatusCodes . BadNoData } ) ; } const dataValue1 = interval . dataValues [ interval . index ] ; if ( ! isBad ( dataValue1 . statusCode ) && interval . hasRawDataAsStart ( ) ) { return dataValue1 ; } const before = interval . beforeStartDataValue ( bTreatUncertainAsBad ) ; if ( isBad ( before . dataValue . statusCode ) ) { return new DataValue ( { sourceTimestamp : interval . startTime , statusCode : StatusCodes . BadNoData } ) ; } if ( options . stepped ) { if ( before . index + 1 === interval . index ) { return new DataValue ( { sourceTimestamp : interval . startTime , statusCode : StatusCode . makeStatusCode ( before . dataValue . statusCode , "HistorianInterpolated" ) , value : before . dataValue . value } ) ; } return steppedValue ( before . dataValue ) ; } const next = interval . nextStartDataValue ( bTreatUncertainAsBad ) ; const interpolatedDataValue = interpolateValue ( before . dataValue , next . dataValue , interval . startTime ) ; if ( before . index + 1 < next . index || ! isGood ( next . dataValue . statusCode ) || ! isGood ( before . dataValue . statusCode ) ) { const mask = 0x0000ffffff ; const extraBits = interpolatedDataValue . statusCode . value & mask ; interpolatedDataValue . statusCode = StatusCode . makeStatusCode ( StatusCodes . UncertainDataSubNormal , extraBits ) ; } return interpolatedDataValue ; } param node param processingInterval param startDate param endDate param callback export function getInterpolatedData ( node , processingInterval , startDate , endDate , callback ) { getAggregateData ( node , processingInterval , startDate , endDate , interpolatedValue , callback ) ; }