accessing s3 from lambda within VPC in aws-go-sdk

Question

I'm just started on using aws-sdk-go and notice that the s3 requests are using http/https rather than s3 protocol. How can I read the object in s3 from my lambda within vpc using aws-sdk-go?

And I don't want to use NAT Gateway. I can do this in NodeJS but is there any way for aws-go-sdk to do the same?

Thanks!

There is no "S3 protocol." S3 uses HTTP. The s3://bucket/object notation (if this is what you are referring to) is simply a URI format, a notational style. It's not clear what you are saying you can do in Node that is different than Go... please clarify this, because there should be no difference. — Michael - sqlbot
– Michael - sqlbot, Commented Apr 13, 2018 at 11:17
yeah.. It turns out that I need the S3 Endpoint as mentioned by @Robo. Sorry for the confusion. The application in NodeJS belongs to a VPC that does have an s3 endpoint — kkesley
– kkesley, Commented Apr 15, 2018 at 1:06

Everton · Accepted Answer · 2018-04-13 21:20:15Z

3

This code snippet shows how to use aws-go-sdk to list S3 buckets for region us-east-1 within a Lambda function:

func listBuckets() {
    svc := s3.New(session.New(&aws.Config{Region: aws.String("us-east-1")}))
    buckets, err := svc.ListBuckets(nil)
    log.Printf("listBuckets: %q error=%v", buckets, err)
}

Find full source code here: https://github.com/udhos/hellolambda/blob/master/main.go

answered Apr 13, 2018 at 21:20

Everton

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Robo · Accepted Answer · 2018-04-14 08:55:11Z

2

To access S3 within a VPC without an internet gateway you need to use a S3 Endpoint

answered Apr 14, 2018 at 8:55

Robo

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