CODEWITHSUNDEEP
pythonamazon-s3botoboto3
Adi
Adi

Reputation: 4230

How to upload a file to S3 and make it public using boto3?

I am able to upload an image file using:

s3 = session.resource('s3')
bucket = s3.Bucket(S3_BUCKET)
bucket.upload_file(file, key)

However, I want to make the file public too. I tried looking up for some functions to set ACL for the file but seems like boto3 have changes their API and removed some functions. Is there a way to do it in the latest release of boto3?

Upvotes: 94

Views: 66619

Answers (5)

joel3000
joel3000

Reputation: 1319

Set the ACL="public-read" as mentioned above.

Also, make sure your bucket policy Resource line has both the bare arn and /* arn formats. Not having them both can cause strange permissions problems.

...
"Resource": ["arn:aws:s3:::my_bucket/*", "arn:aws:s3:::my_bucket"]

Upvotes: 0

Czyzby
Czyzby

Reputation: 3139

In the recent versions of boto, ACL is available as a regular parameter - both when using the S3 client and resource, it seems. You can just specify ACL="public_read" without having to wrap it with ExtraParams or using ObjectAcl API.

Upvotes: 0

Bill Baker
Bill Baker

Reputation: 1509

To upload and set permission to publicly-readable in one step, you can use:

bucket.upload_file(file, key, ExtraArgs={'ACL':'public-read'})

See https://boto3.amazonaws.com/v1/documentation/api/latest/guide/s3-uploading-files.html#the-extraargs-parameter

Upvotes: 150

Rohan Bagchi
Rohan Bagchi

Reputation: 711

Adi's way works. However, if you were like me, you might have run into an access denied issue. This is normally caused by broken permissions of the user. I fixed it by adding the following to the Action array:

"s3:GetObjectAcl",
"s3:PutObjectAcl"

Upvotes: 13

Adi
Adi

Reputation: 4230

I was able to do it using objectAcl API:

s3 = boto3.resource('s3')
object_acl = s3.ObjectAcl('bucket_name','object_key')
response = object_acl.put(ACL='public-read')

For details: http://boto3.readthedocs.io/en/latest/reference/services/s3.html#objectacl

Upvotes: 56

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