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https://github.com/mhart/kinesis
A Node.js stream implementation of Amazon's Kinesis
https://github.com/mhart/kinesis
Last synced: 14 days ago
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A Node.js stream implementation of Amazon's Kinesis
- Host: GitHub
- URL: https://github.com/mhart/kinesis
- Owner: mhart
- License: mit
- Created: 2013-11-14T21:56:54.000Z (almost 11 years ago)
- Default Branch: master
- Last Pushed: 2024-04-23T11:45:18.000Z (7 months ago)
- Last Synced: 2024-05-01T22:35:49.578Z (7 months ago)
- Language: JavaScript
- Size: 35.2 KB
- Stars: 149
- Watchers: 9
- Forks: 30
- Open Issues: 8
-
Metadata Files:
- Readme: README.md
- License: LICENSE
Awesome Lists containing this project
README
kinesis
-------
[](http://travis-ci.org/mhart/kinesis)
A Node.js stream implementation of [Amazon's Kinesis](http://docs.aws.amazon.com/kinesis/latest/APIReference/).
Allows the consumer to pump data directly into (and out of) a Kinesis stream.
This makes it trivial to setup Kinesis as a logging sink with [Bunyan](https://github.com/trentm/node-bunyan), or any other logging library.
For setting up a local Kinesis instance (eg for testing), check out [Kinesalite](https://github.com/mhart/kinesalite).
NB: API has changed from 0.x to 1.x
-----------------------------------
Example
-------
```js
var fs = require('fs'),
Transform = require('stream').Transform,
kinesis = require('kinesis'),
KinesisStream = kinesis.KinesisStream
// Uses credentials from process.env by default
kinesis.listStreams({region: 'us-west-1'}, function(err, streams) {
if (err) throw err
console.log(streams)
// ["http-logs", "click-logs"]
})
var kinesisSink = kinesis.stream('http-logs')
// OR new KinesisStream('http-logs')
fs.createReadStream('http.log').pipe(kinesisSink)
var kinesisSource = kinesis.stream({name: 'click-logs', oldest: true})
// Data is retrieved as Record objects, so let's transform into Buffers
var bufferify = new Transform({objectMode: true})
bufferify._transform = function(record, encoding, cb) {
cb(null, record.Data)
}
kinesisSource.pipe(bufferify).pipe(fs.createWriteStream('click.log'))
// Create a new Kinesis stream using the raw API
kinesis.request('CreateStream', {StreamName: 'test', ShardCount: 2}, function(err) {
if (err) throw err
kinesis.request('DescribeStream', {StreamName: 'test'}, function(err, data) {
if (err) throw err
console.dir(data)
})
})
```
API
---
### kinesis.stream(options)
### new KinesisStream(options)
Returns a readable and writable Node.js stream for the given Kinesis stream
`options` include:
- `region`: a string, or (deprecated) object with AWS credentials, host, port, etc (resolved from env or file by default)
- `credentials`: an object with `accessKeyId`/`secretAccessKey` properties (resolved from env, file or IAM by default)
- `shards`: an array of shard IDs, or shard objects. If not provided, these will be fetched and cached.
- `oldest`: if truthy, then will start at the oldest records (using `TRIM_HORIZON`) instead of the latest
- `writeConcurrency`: how many parallel writes to allow (`1` by default)
- `cacheSize`: number of PartitionKey-to-SequenceNumber mappings to cache (`1000` by default)
- `agent`: HTTP agent used (uses Node.js defaults otherwise)
- `timeout`: HTTP request timeout (uses Node.js defaults otherwise)
- `initialRetryMs`: first pause before retrying under the default policy (`50` by default)
- `maxRetries`: max number of retries under the default policy (`10` by default)
- `errorCodes`: array of Node.js error codes to retry on (`['EADDRINFO',
'ETIMEDOUT', 'ECONNRESET', 'ESOCKETTIMEDOUT', 'ENOTFOUND', 'EMFILE']` by default)
- `errorNames`: array of Kinesis exceptions to retry on
(`['ProvisionedThroughputExceededException', 'ThrottlingException']` by default)
- `retryPolicy`: a function to implement a retry policy different from the default one
### kinesis.listStreams([options], callback)
Calls the callback with an array of all stream names for the AWS account
### kinesis.request(action, [data], [options], callback)
Makes a generic Kinesis request with the given action (eg, `ListStreams`) and data as the body.
`options` include:
- `region`: a string, or (deprecated) object with AWS credentials, host, port, etc (resolved from env or file by default)
- `credentials`: an object with `accessKeyId`/`secretAccessKey` properties (resolved from env, file or IAM by default)
- `agent`: HTTP agent used (uses Node.js defaults otherwise)
- `timeout`: HTTP request timeout (uses Node.js defaults otherwise)
- `initialRetryMs`: first pause before retrying under the default policy (`50` by default)
- `maxRetries`: max number of retries under the default policy (`10` by default)
- `errorCodes`: array of Node.js error codes to retry on (`['EADDRINFO',
'ETIMEDOUT', 'ECONNRESET', 'ESOCKETTIMEDOUT', 'ENOTFOUND', 'EMFILE']` by default)
- `errorNames`: array of Kinesis exceptions to retry on
(`['ProvisionedThroughputExceededException', 'ThrottlingException']` by default)
- `retryPolicy`: a function to implement a retry policy different from the default one