Amazon AWS SDK User Manual

The Response Object (AWS.Response)
The response object is passed into each callback function so that you can access response data.The
AWS.Response object that is passed in contains two important properties to get at this data:
• data
• error
When using the standard callback mechanism, the two properties will be made available as parameters
on the callback method in the form: function(error, data) { ... }
The data property
The response.data property contains the serialized object data retrieved from the service request. For
instance, for an Amazon DynamoDB listTables method call, the response data might look like this:
> response.data
{ TableNames:
[ 'table1', 'table2', ... ] }
The data property can be null if an error occurs (see below).
The error property
In the event of a service error (or transfer error), the response.error property will be filled with the
given error data in the form:
{ code: 'SHORT_UNIQUE_ERROR_CODE',
message: 'Some human readable error message' }
In the case of an error, the data property will be null. Note that if you handle events that can be in a
failure state, you should always check whether response.error is set before attempting to access the
response.data property.
The request Property
Access to the originating request object is available through this property. For example, to access the
parameters that were sent with a request:
s3.getObject({Bucket: 'bucket', Key: 'key'}).on('success', function(response)
{
console.log("Key was", response.request.params.Key);
}).send();
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AWS SDK for Node.js Getting Started Guide
The Response Object (AWS.Response)

Amazon AWS SDK Specifications

General

Category	Software Development Kit (SDK)
Developer	Amazon Web Services (AWS)
License	Apache License 2.0
Purpose	To enable developers to interact with AWS services from their applications.
Supported Languages	Java, Python, JavaScript, .NET, Ruby, PHP, Go, C++
Supported AWS Services	All AWS services
Operating Systems	Windows, macOS, Linux
Latest Version	Varies by SDK and language. Refer to the official AWS documentation for the specific SDK.
Repository	GitHub (for many SDKs)
Documentation	Available on the AWS website.
SDK Features	API abstraction, request signing, error handling, retry logic, data serialization, and support for various authentication methods.