Support for S3:Events Prefix and Suffix Rules

[malcyL]

Serverless allows for the setting of prefix and suffix rules on S3 Events:

https://serverless.com/framework/docs/providers/aws/events/s3#setting-filter-rules

functions:
  users:
    handler: incoming.handler
    events:
      - s3:
          bucket: mybucket
          event: s3:ObjectCreated:*
          rules:
            - prefix: incoming/
            - suffix: .zip

I think serverless-s3-local is ignoring these rules?

My use case is an existing system which changes the key of a file after it's completed processing. For example, a file is uploaded to s3 with a bucket and key: s3://mybucket/incoming/file1.zip and then after processing it is moved to s3://mybucket/processed/file1.zip.

When running locally with serverless-s3-local the handler is triggered twice, once when it is initially created and again when the key is changed. When deployed to AWS this doesn't happen as the prefix and suffix rules are applied.

[ar90n]

Hi @malcyL
Thanks for your report.
Now, serverless-s3-local doesn't support these rules.
But I decided to try to support this function.
Please wait for a while.

[ar90n]

Hi @malcyL
I implemented this feature at v0.3.6.
Please try it !

[malcyL]

Hi @ar90n

I've tested your new release this morning and it's working as expected.

The lambda is triggered when the file is first created and the key matches the rules. After processing when we change the key of the file, the lambda is no longer triggered because the new key doesn't match the rules.

I've also tested with multiple lambda's all working with different prefixes. i.e. Lambda 1 processing files from s3://mybucket/images/incoming and Lambda 2 processing files from s3://mybucket/data/incoming. Previously, incoming files would trigger both the lambda's. Now only the correct lambda is triggered.

I'm happy for this issue to be closed, but I'll leave it for you to do.

Thank you so much for turning this feature request around so quickly. That's very impressive.

[ar90n]

@malcyL
That sounds good !
I'm glad to help you with serverless-s3-local.
If you meet any problem, please inform of me.
I'll try to solve the issues as possible.

[fffan64]

hello,

having same problem in latest version 0.5.4, look like the issue is back !