Smarter Cloud Spending: FinOps Agent Powered by Strands SDK and Amazon Bedrock

The provided code snippet is a collection of utility functions designed to work with AWS CloudWatch metrics and other AWS services. Below, I'll provide an explanation for each function:

1. client_for_service_region(service: str, region: Optional[str] = None) -> Any:

   • This function returns a client object for the specified service in a given region.
   • If no region is provided, it defaults to the primary region of the AWS session.

2. cw_stats(client, namespace: str, metric: str, dims: list[dict], days: int, stat: str = "Average", period: int = 86400) -> list[float]:

   • This function retrieves statistical data for a given CloudWatch metric over the past days number of days.
   • It uses the AWS SDK's get_metric_statistics method to fetch data points and returns them as a list of floats.

3. per_region(service: str, fn: Callable[[str, Any], dict]) -> dict[str, dict]:

   • This function applies a given function (fn) to each active region for the specified AWS service.
   • It collects results from all

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