@aws-sdk/eventstream-marshaller

What is @aws-sdk/eventstream-marshaller?

@aws-sdk/eventstream-marshaller is a package within the AWS SDK for JavaScript that provides utilities for serializing and deserializing event streams. This is particularly useful for working with AWS services that use event streams, such as AWS Transcribe and AWS Kinesis.

What are @aws-sdk/eventstream-marshaller's main functionalities?

Serialize Event Stream

This feature allows you to serialize an event stream. The code sample demonstrates how to create an instance of EventStreamMarshaller and use it to serialize an event.

const { EventStreamMarshaller } = require('@aws-sdk/eventstream-marshaller');
const { TextEncoder } = require('util');

const marshaller = new EventStreamMarshaller(new TextEncoder(), new TextDecoder());
const event = { headers: {}, body: Buffer.from('example data') };
const serialized = marshaller.marshall(event);
console.log(serialized);

Deserialize Event Stream

This feature allows you to deserialize an event stream. The code sample demonstrates how to create an instance of EventStreamMarshaller and use it to deserialize an event.

const { EventStreamMarshaller } = require('@aws-sdk/eventstream-marshaller');
const { TextDecoder } = require('util');

const marshaller = new EventStreamMarshaller(new TextEncoder(), new TextDecoder());
const serialized = Buffer.from('example serialized data');
const event = marshaller.unmarshall(serialized);
console.log(event);

Other packages similar to @aws-sdk/eventstream-marshaller

event-stream

The event-stream package is a toolkit for working with streams in Node.js. It provides a variety of utilities for creating and manipulating streams, including event streams. While it is more general-purpose compared to @aws-sdk/eventstream-marshaller, it can be used for similar tasks involving stream processing.

kinesis-client-library

The kinesis-client-library is a package specifically designed for working with AWS Kinesis streams. It provides higher-level abstractions for consuming and processing Kinesis streams, making it more specialized compared to @aws-sdk/eventstream-marshaller, which is more low-level and general-purpose for event stream serialization and deserialization.

README

@aws-sdk/eventstream-marshaller

Changelog

3.120.0 (2022-06-29)

Bug Fixes

• populate content-type header for all event messages (#3760) (4f3d41e)
• s3-request-presigner: not mutate client mw stack (#3751) (cbe8126)

Features

• client-appstream: Includes support for StreamingExperienceSettings in CreateStack and UpdateStack APIs (76b0af1)
• client-emr: This release introduces additional optional parameter "Throughput" to VolumeSpecification to enable user to configure throughput for gp3 ebs volumes. (e9259f0)
• client-medialive: This release adds support for automatic renewal of MediaLive reservations at the end of each reservation term. Automatic renewal is optional. This release also adds support for labelling accessibility-focused audio and caption tracks in HLS outputs. (1737bf6)
• client-redshift-serverless: Add new API operations for Amazon Redshift Serverless, a new way of using Amazon Redshift without needing to manually manage provisioned clusters. The new operations let you interact with Redshift Serverless resources, such as create snapshots, list VPC endpoints, delete resource policies, and more. (ba28895)
• client-sagemaker: This release adds: UpdateFeatureGroup, UpdateFeatureMetadata, DescribeFeatureMetadata APIs; FeatureMetadata type in Search API; LastModifiedTime, LastUpdateStatus, OnlineStoreTotalSizeBytes in DescribeFeatureGroup API. (74b38f9)
• client-translate: Added ListLanguages API which can be used to list the languages supported by Translate. (4ec076d)
• clients: update client endpoints as of 2022-06-29 (b078874)