[NIFI-9817] Add a Validator for the PutCloudWatchMetric Processor's Unit Parameter

• Type: Improvement
• Status: Resolved
• Priority: Minor
• Resolution: Fixed
• Affects Version/s: 1.15.3
• Fix Version/s: 1.17.0
• Component/s: Core UI
• Environment: ProductName: macOS ; ProductVersion: 12.2.1 ; BuildVersion: 21D62
• Assignee: Pat Alwell
• Reporter: Pat Alwell
• Created: 19/Mar/22 15:55
• Updated: 23/Jul/22 15:57
• Resolved: 23/Jul/22 15:56

Description

The AWS PutCloudWatchMetric processor has a Unit property that requires a value from AWS's CloudWatch API specifications. This value is a constant from a predefined set of string parameters. The API enforces casing so a unit value of "bytes" fails to make a successful API request, whereas "Bytes" succeeds. I've attached a screenshot that leads to a stack trace.

The proposed fix includes a new Validator() to warn the user about the issues prior to starting the PutCloudWatchMetric processor and a set to determine the partitions for the Unit field in API requests to AWS.

This is the hyper link for the API specification details:

[ https://docs.aws.amazon.com/AmazonCloudWatch/latest/APIReference/API_MetricDatum.html|https://docs.aws.amazon.com/AmazonCloudWatch/latest/APIReference/API_MetricDatum.html].

Issue Links

• links to: GitHub Pull Request #5905