Feature request: CodePipeline Lambda Event

[jplock]

Is your feature request related to a problem? Please describe.

A CodePipeline data class for Lambda events with helper methods to use the embedded credentials to download an artifact from S3.

https://docs.aws.amazon.com/codepipeline/latest/userguide/actions-invoke-lambda-function.html#actions-invoke-lambda-function-json-event-example

Describe the solution you'd like

see above

Describe alternatives you've considered

Manually accessing the event

Additional context

[michaelbrewer]

Cool, i will have a look. Is there any additional docs on the schema for this? I would assume their would some utils needed for this as well.

[jplock]

@michaelbrewer i haven’t seen any other docs beyond that page. There is sample python code on there as well.

[michaelbrewer]

@jplock tracked down more docs :)

• https://docs.aws.amazon.com/lambda/latest/dg/services-codepipeline.html

[michaelbrewer]

@jplock initial PR: aws-powertools/powertools-lambda-python#416

[michaelbrewer]

@jplock @heitorlessa any insights to what kind of utility short cuts (like setting up the S3 session) to add to the event type :)

[jplock]

@michaelbrewer how about something like:

def get_artifact(self, artifact_name: str, filename: str) -> Optional[str]:
  s3 = boto3.client(
    "s3",
    aws_access_key_id=self.data.artifact_credentials.access_key_id,
    aws_secret_access_key=self.data.artifact_credentials.secret_access_key,
    aws_session_token=self.data.artifact_credentials.session_token
  )

  for artifact in self.data.input_artifacts:
    if artifact.name == artifact_name:
      bucket = artifact.location.s3_location.bucket_name
      key = artifact.location.s3_location.key
    
      with tempfile.NamedTemporaryFile() as tmp_file:
        s3.download_file(bucket, key, tmp_file.name)
        with zipfile.ZipFile(tmp_file.name, 'r') as zip:
          return zip.read(filename)

  return None
  

[michaelbrewer]

@jplock zip.read returns bytes and Cloudformation create_stack and update_stack expects a string for the TemplateBody.

So i might have to add a decode("UTF-8") to this.

[michaelbrewer]

@jplock this has been officially released now: CodePipeline Job

[jplock]

Thank you for pushing this through @michaelbrewer !