Golang download s3 file

Viewed 11k times. I am writing a go function to download a file from AWS S3 bucket. Create item if err! String bucket , Key: aws. Println "Downloaded", file. CredentialsChainVerboseErrors The documentation does not specifically say how to set the credentials.

Access key ID,Secret access key Any idea? Talha Junaid 1, 16 16 silver badges 25 25 bronze badges. Madhuka Wickramapala Madhuka Wickramapala 1, 2 2 gold badges 10 10 silver badges 27 27 bronze badges. Add a comment. Active Oldest Votes. String "us-east-1" , Credentials: credentials. Sign up or log in Sign up using Google. Sign up using Facebook. Sign up using Email and Password. After a quick scan of the README I realised fsnotify doesn't watch files recursively by default which didn't quite fit my requirements.

Unlike fsnotify with it's OS specifc file events, watcher uses polling. After instantiating watcher it can be configured to only watch for certain file events. Watcher works by emitting events onto a channel which you handle via a Go select statement inside a goroutine.

The Event type composes os. FileInfo so we use the IsDir method to ignore new directories. On each newly created file we create another goroutine to handle the file upload to S3 to see the actual implementation check out the source code. Finally I created a multi-stage Docker file which compiles the binary using the official Go image and then copies the build artifact to an image which extends Alpine linux. The final image comes out at only Nice and lean. To see the final result check out go-watch-s3 on github.

I would recommend you to check those links:. Are you sure you want to hide this comment? It will become hidden in your post, but will still be visible via the comment's permalink. Christian Nwamba - Nov Ricardo Sueiras - Nov DEV Community is a community of , amazing developers We're a place where coders share, stay up-to-date and grow their careers.

Create account Log in. Twitter Facebook Github Instagram Twitch. I am going to suppose that you have already: created an AWS account created an Amazon Simple Storage S3 Bucket generated the credentials to access it Access key ID and Secret access key I am not going to explain those things here since there are already plenty of good tutorials on the Internet about it.

Set up your credentials After having created the S3 Bucket, the very first thing that we are going to do is to save the credentials.