67 lines
1.8 KiB
JavaScript
67 lines
1.8 KiB
JavaScript
'use strict';
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exports = module.exports = {
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SysInfoError: SysInfoError,
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getIp: getIp
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};
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var assert = require('assert'),
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caas = require('./sysinfo/caas.js'),
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config = require('./config.js'),
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ec2 = require('./sysinfo/ec2.js'),
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util = require('util');
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var gCachedIp = null;
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function SysInfoError(reason, errorOrMessage) {
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assert.strictEqual(typeof reason, 'string');
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assert(errorOrMessage instanceof Error || typeof errorOrMessage === 'string' || typeof errorOrMessage === 'undefined');
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Error.call(this);
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Error.captureStackTrace(this, this.constructor);
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this.name = this.constructor.name;
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this.reason = reason;
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if (typeof errorOrMessage === 'undefined') {
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this.message = reason;
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} else if (typeof errorOrMessage === 'string') {
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this.message = errorOrMessage;
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} else {
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this.message = 'Internal error';
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this.nestedError = errorOrMessage;
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}
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}
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util.inherits(SysInfoError, Error);
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SysInfoError.INTERNAL_ERROR = 'Internal Error';
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function getApi(callback) {
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assert.strictEqual(typeof callback, 'function');
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switch (config.provider()) {
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case '': return callback(null, caas); // current fallback for caas
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case 'caas': return callback(null, caas);
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case 'digitalocean': return callback(null, caas);
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case 'ec2': return callback(null, ec2);
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default: return callback(new Error('Unkown provider ' + config.provider()));
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}
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}
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function getIp(callback) {
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assert.strictEqual(typeof callback, 'function');
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if (gCachedIp) return callback(null, gCachedIp);
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getApi(function (error, api) {
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if (error) return callback(error);
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api.getIp(function (error, ip) {
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if (error) return callback(error);
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gCachedIp = ip;
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callback(null, gCachedIp);
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});
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});
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}
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