Use Readable and Writable streams for AWS SQS
$ npm install node-sqs-stream --saveor
$ yarn add node-sqs-streamKind: global class
Extends: Writable
Kind: static class of SQSWritableStream
Creates an instance of SQSWritableStream.
| Param | Type | Description |
|---|---|---|
| options.sqsClient | Object |
instance of AWS.SQS |
| options.queueUrl | string |
URL of the SQS queue |
| options.sqsBatchSize | Number |
No of messages to be sent in one batch |
const sqsClient = new AWS.SQS({apiVersion: '2012-11-05'});
const sqsStream = new SQSWritableStream({
sqsClient: sqsClient,
queueUrl: 'http://example-sqs-url',
});
someStream.pipe(sqsStream);//pipe contents of a file line by line to SQS without blowing up your memory usage
const fs = require('fs');
const AWS = require('aws-sdk');
const { SQSWritableStream } = require('../index');
const { Transform } = require('stream');
const sqsClient = new AWS.SQS({apiVersion: '2012-11-05'});
const readStream = fs.createReadStream(__dirname + '/test');
const sqsStream = new SQSWritableStream({
sqsClient: sqsClient,
queueUrl: 'http://example-sqs-url',
});
const splitLines = new Transform({
writableObjectMode: true,
transform(chunk, encoding, callback) {
const lines = chunk.toString().split('\n');
for (let i = 0; i < lines.length; i++) {
const line = lines[i];
this.push(line);
}
callback();
}
})
readStream.on('end', () => {
console.log('Finished reading');
});
sqsStream.on('finish', () => {
console.log('Finished writing');
})
readStream.pipe(splitLines).pipe(sqsStream);const fs = require("fs");
const AWS = require("aws-sdk");
const { SQSWritableStream } = require("../index");
const { Transform } = require("stream");
const uuidv4 = require("uuid/v4");
const sqsClient = new AWS.SQS({ apiVersion: "2012-11-05" });
const readStream = fs.createReadStream(__dirname + "/test");
const sqsStream = new SQSWritableStream({
sqsClient: sqsClient,
queueUrl: "https://example-test"
});
const splitLines = new Transform({
objectMode: true,
transform(chunk, encoding, callback) {
const lines = chunk.toString().split("\n");
for (let i = 0; i < lines.length; i++) {
const line = lines[i];
this.push({
Id: uuidv4(),
MessageBody: line,
DelaySeconds: 10,
MessageAttributes: {
"RequestId": {
DataType: "String",
StringValue: "Some auto generated requestId"
}
},
MessageDeduplicationId: uuidv4(),
MessageGroupId: uuidv4(),
// MessageSystemAttributes: {
// "AWSTraceHeader": {
// DataType: "String",
// StringValue: "xyz"
// }
// }
});
}
callback();
}
});
readStream.on("end", () => {
console.log("Finished reading");
});
sqsStream.on("finish", () => {
console.log("Finished writing");
});
sqsStream.on('error', (error) => {
console.error(error)
})
readStream.pipe(splitLines).pipe(sqsStream);The stream uses batching to reduce calls to SQS.
This is especially useful when doing ETL.
The MIT License (MIT)
Copyright (c) 2013-2020 Brian M. Carlson
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