zlib.ts

import { Tier, Status } from './tier';
import Util from './util';
import zlib = require('zlib');

/**
 * ZLib tier
 * Main resources used: CPU, cache and memory
 */
export default class ZLib extends Tier {

    textLength: number;
    
    /**
     * Compress and decompress a random text using the nodejs native library zlib
     * @param textLength length of the random text that will be compressed and decompressed
     */
    constructor(textLength = 64000) {
        super();
        this.textLength = textLength;
    }

    protected executeTask(): any {
        let input = Util.randomString(this.textLength);
        let compressed = zlib.deflateSync(input);
        let original = zlib.inflateSync(compressed);
        if (input != original.toString('ascii'))
            return new Status("There was an error while compressing/decompressing.", 500);
        return new Status("Text sucessfully compressed and decompressed.");
    }

}