Current File : /home/opti/workflow/node_modules/aws-sdk/lib/credentials/ec2_metadata_credentials.js
var AWS = require('../core');
require('../metadata_service');
/**
* Represents credentials received from the metadata service on an EC2 instance.
*
* By default, this class will connect to the metadata service using
* {AWS.MetadataService} and attempt to load any available credentials. If it
* can connect, and credentials are available, these will be used with zero
* configuration.
*
* @!macro nobrowser
*/
AWS.EC2MetadataCredentials = AWS.util.inherit(AWS.Credentials, {
constructor: function EC2MetadataCredentials(options) {
AWS.Credentials.call(this);
this.metadataService = new AWS.MetadataService(options);
this.metadata = {};
},
/**
* Loads the credentials from the instance metadata service
*
* @callback callback function(err)
* Called when the instance metadata service responds (or fails). When
* this callback is called with no error, it means that the credentials
* information has been loaded into the object (as the `accessKeyId`,
* `secretAccessKey`, and `sessionToken` properties).
* @param err [Error] if an error occurred, this value will be filled
* @see get
*/
refresh: function refresh(callback) {
var self = this;
if (!callback) callback = function(err) { if (err) throw err; };
self.metadataService.loadCredentials(function (err, creds) {
if (!err) {
self.expired = false;
self.metadata = creds;
self.accessKeyId = creds.AccessKeyId;
self.secretAccessKey = creds.SecretAccessKey;
self.sessionToken = creds.Token;
self.expireTime = new Date(creds.Expiration);
}
callback(err);
});
}
});
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