33 lines
947 B
JavaScript
33 lines
947 B
JavaScript
'use strict';
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var util = require('util');
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var debug = require('../../util/debug')('capacity-http-load');
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var HttpSimpleCapacity = require('./http-simple');
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function HttpLoadCapacity (host, capacityEndpoint) {
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HttpSimpleCapacity.call(this, host, capacityEndpoint);
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}
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util.inherits(HttpLoadCapacity, HttpSimpleCapacity);
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module.exports = HttpLoadCapacity;
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HttpLoadCapacity.prototype.getCapacity = function (callback) {
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this.getResponse(function (err, values) {
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var capacity = 1;
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if (err) {
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return callback(null, capacity);
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}
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var cores = parseInt(values.cores, 10);
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var relativeLoad = parseFloat(values.relative_load);
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capacity = Math.max(1, Math.floor(((1 - relativeLoad) * cores) - 1));
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capacity = Number.isFinite(capacity) ? capacity : 1;
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debug('host=%s, capacity=%s', this.host, capacity);
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return callback(null, capacity);
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}.bind(this));
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};
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