/Javascript/Node.js/S3.getobject nodejs example

S3.getobject nodejs example

const { GetObjectCommand, S3Client } = require('@aws-sdk/client-s3')
const client = new S3Client() // Pass in opts to S3 if necessary

function getObject (Bucket, Key) {
  return new Promise(async (resolve, reject) => {
    const getObjectCommand = new GetObjectCommand({ Bucket, Key })

    try {
      const response = await client.send(getObjectCommand)
  
      // Store all of data chunks returned from the response data stream 
      // into an array then use Array#join() to use the returned contents as a String
      let responseDataChunks = []

      // Handle an error while streaming the response body
      response.Body.once('error', err => reject(err))
  
      // Attach a 'data' listener to add the chunks of data to our array
      // Each chunk is a Buffer instance
      response.Body.on('data', chunk => responseDataChunks.push(chunk))
  
      // Once the stream has no more data, join the chunks into a string and return the string
      response.Body.once('end', () => resolve(responseDataChunks.join('')))
    } catch (err) {
      // Handle the error or throw
      return reject(err)
    } 
  })
}

Source: stackoverflow.com

S3.getobject nodejs example

const AWS = require('aws-sdk');

const s3 = new AWS.S3();

async function getObject (bucket, objectKey) {
  try {
    const params = {
      Bucket: bucket,
      Key: objectKey 
    }

    const data = await s3.getObject(params).promise();

    return data.Body.toString('utf-8');
  } catch (e) {
    throw new Error(`Could not retrieve file from S3: ${e.message}`)
  }
}

// To retrieve you need to use `await getObject()` or `getObject().then()`
const myObject = await getObject('my-bucket', 'path/to/the/object.txt');

Source: stackoverflow.com

Similar codes

18 votes113 views2 answers
.gitignore nodejs
Javascript Node.js
1 vote119 views1 answer
Nodejs chaning env variable at runtime
Javascript Node.js
0 vote112 views1 answer
Upload file on node js azure function
Javascript Node.js
0 vote134 views1 answer
Node express app.listen at specific port & host
Javascript Node.js
0 vote112 views1 answer
How to wait for an exec command to fininsh in nodejs
Javascript Node.js
0 vote123 views1 answer
Node js send javascript
Javascript Node.js
0 vote124 views1 answer
Create directory when writing to file in nodejs
Javascript Node.js
0 vote108 views1 answer
Use node js as backend with angular frontend
Javascript Node.js
0 vote110 views2 answers
Test command in node js
Javascript Node.js
0 vote124 views1 answer
Node js while loop with settimeout
Javascript Node.js