### Is there an existing issue for this?

- [X] I have searched the existing issues

### Feature description

Basically we want to only run the lambda when an insert is occurring in DynamoDB.
I tested using Dynobase deleting a record and the lambda still triggered.

```
resource "aws_lambda_event_source_mapping" "event-log" {
	event_source_arn  = aws_dynamodb_table.event-log.stream_arn
	function_name     = module.main.lambda-arn
	starting_position = "LATEST"
	enabled = true # change to false when truncating the table in localstack
	maximum_retry_attempts = 1 # limit retry on failure to 1 for now

	# https://dev.to/aws-builders/filtering-dynamodb-streams-before-lambda-p5p
	filter_criteria { # Doesn't seem to work on LocalStack for now
		filter {
			pattern = jsonencode({
				body = {
					eventName : ["INSERT"]
				}
			})
		}
	}
}
```


### 🧑‍💻 Implementation

_No response_

### Anything else?

 https://dev.to/aws-builders/filtering-dynamodb-streams-before-lambda-p5p
value = [] if target is None else [target]
                    common.assign_to_path(subject, path, value=value, delimiter="/")
                target = common.extract_from_jsonpointer_path(subject, path)
                if isinstance(target, list) and not path.endswith("/-"):
                    
                    
                    operation["path"] = "%s/-" % path
            result = apply_patch(subject, [operation], in_place=in_place)
            if not in_place:
                subject = result
            results.append(result)
        except JsonPointerException:
            pass  
        except Exception as e:
            if "non-existent object" in str(e):
                if operation["op"] == "replace":
                    
                    operation["op"] = "add"
                    result = apply_patch(subject, [operation], in_place=in_place)
                    results.append(result)
                    continue
                if operation["op"] == "remove" and isinstance(subject, dict):
                    result = subject.pop(operation["path"], None)
                    results.append(result)
                    continue
            raise
    if return_list:
        return results
    return (results or [subject])[-1]
def import_api_from_openapi_spec(rest_api: RestAPI, body: Dict, query_params: Dict) -> RestAPI: