Aws-cli: aws s3 cp without recursive can produce a useless error message

[DaazKu]

Without --recursive:

aws s3 cp ./{DIRECTORY} s3://{BUCKET}/
upload failed: {DIRECTORY}/ to s3://{BUCKET}/ Parameter validation failed:
Invalid length for parameter Key, value: 0, valid range: 1-inf

With --recursive:

aws s3 cp --recursive ./{DIRECTORY} s3://{BUCKET}/
upload: ...

When searching for that error, the first result on google is about issue #2929 which as been closed for no apparent reason.

This comment says it all https://github.com/aws/aws-cli/issues/2929#issuecomment-393869946

Please improve that message...

Version info:

➜  workspace aws --version
aws-cli/1.15.50 Python/3.7.0 Darwin/17.7.0 botocore/1.10.49

[shubhamsre]

In the aws cli directory, there's a file __init__.pyc that lists about the source directory, bucket and key requirement.

       # Upload /tmp/myfile to s3://bucket/key
          transfer.upload_file('/tmp/myfile', 'bucket', 'key')

I found that key (i.e. a filename) should be mentioned with the command as in example below. Maybe this could solve your issue.
ex: aws s3 cp test.zip s3://my-bucket/test.zip

Further run the following command to verify if you have configured your credentials.
aws configure list

[justnance]

@DaazKu - Thanks for reaching out and thanks @zeniri for your reply. I have reproduced the Invalid length for parameter Key, value: 0, valid range: 1-inf error returning without --recursive when executing aws s3 cp ./{DIRECTORY} s3://{BUCKET}/. I agree this could use a better error message. Our team is aware of this feature request so I have labeled it as such.

[aidenmitchell]

The error message is still not helpful in version:
aws-cli/1.16.111 Python/3.6.0 Windows/8.1 botocore/1.12.101

[shubhamsre]

@ilovecats516 please elaborate the steps you took to get to the above error. Thanks!

[kjenney]

Still getting the error:

aws-cli/1.16.140 Python/2.7.16 Darwin/18.2.0 botocore/1.12.130

aws s3 cp . s3://{BUCKET}/ --include "*.yaml"
upload failed: ./ to s3://{BUCKET}/ Parameter validation failed:
Invalid length for parameter Key, value: 0, valid range: 1-inf

[shubhamsre]

@kjenney please elaborate the steps