flexmonster-mongo-connector/build/utils/MemoryCalculator.js

MongoDB connector for Flexmonster Pivot Table and Charts

"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
exports.MemoryConstants = exports.MemoryCalculator = void 0;
class MemoryCalculator {
    static calculateMapDataSize(data) {
        let bytes = 0;
        let keySize = 0;
        let valueSize = 0;
        data.forEach((value, key) => {
            keySize = key.length * exports.MemoryConstants.CHARACTER;
            valueSize = JSON.stringify(value).length * exports.MemoryConstants.CHARACTER;
            bytes += MemoryCalculator.roundTo8bytes(keySize + valueSize);
        });
        return bytes;
    }
    static calculateMemberObjectSize(stringContent = [], numberOfNumericReferences = 0) {
        let objectSize = 2 * exports.MemoryConstants.REFERENCE;
        for (let i = 0; i < stringContent.length; i++) {
            objectSize += exports.MemoryConstants.REFERENCE + exports.MemoryConstants.CHARACTER * stringContent[i].length;
        }
        objectSize += (exports.MemoryConstants.REFERENCE + exports.MemoryConstants.NUMBER) * numberOfNumericReferences;
        return this.roundTo8bytes(objectSize);
    }
    static calculateFlatDataSize(flatData) {
        let dataSize = 2 * exports.MemoryConstants.REFERENCE;
        dataSize += Object.keys(flatData).length * exports.MemoryConstants.REFERENCE;
        let fieldsArraySize = 2 * exports.MemoryConstants.REFERENCE;
        for (let i = 0; i < flatData.fields.length; i++) {
            fieldsArraySize += 2 * exports.MemoryConstants.REFERENCE + flatData.fields[i]["uniqueName"].length * exports.MemoryConstants.CHARACTER;
        }
        let aggsArraySize = 0;
        if (typeof flatData.aggs !== "undefined") {
            aggsArraySize += 2 * exports.MemoryConstants.REFERENCE;
            if (typeof flatData.aggs[0] !== "undefined") {
                aggsArraySize += 2 * exports.MemoryConstants.REFERENCE + Object.keys(flatData.aggs[0]).length * exports.MemoryConstants.REFERENCE;
                if (typeof flatData.aggs[0]["value"] !== "undefined") {
                    aggsArraySize += 2 * exports.MemoryConstants.REFERENCE + Object.keys(flatData.aggs[0]["value"]).length * (exports.MemoryConstants.REFERENCE + exports.MemoryConstants.NUMBER);
                }
            }
        }
        dataSize += fieldsArraySize + aggsArraySize;
        return this.roundTo8bytes(dataSize);
    }
    static roundTo8bytes(notRounded) {
        const remainder = notRounded % 8;
        if (remainder === 0)
            return notRounded;
        return notRounded - remainder + 8;
    }
}
exports.MemoryCalculator = MemoryCalculator;
exports.MemoryConstants = {
    NUMBER: 8,
    CHARACTER: 2,
    REFERENCE: 8
};
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