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- "use strict";
- var utils = require("../utils");
- var GenericWorker = require("./GenericWorker");
- /**
- * A worker which calculate the total length of the data flowing through.
- * @constructor
- * @param {String} propName the name used to expose the length
- */
- function DataLengthProbe(propName) {
- GenericWorker.call(this, "DataLengthProbe for " + propName);
- this.propName = propName;
- this.withStreamInfo(propName, 0);
- }
- utils.inherits(DataLengthProbe, GenericWorker);
- /**
- * @see GenericWorker.processChunk
- */
- DataLengthProbe.prototype.processChunk = function (chunk) {
- if(chunk) {
- var length = this.streamInfo[this.propName] || 0;
- this.streamInfo[this.propName] = length + chunk.data.length;
- }
- GenericWorker.prototype.processChunk.call(this, chunk);
- };
- module.exports = DataLengthProbe;
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