def metric()

in backend_complete/src/helpers.py [0:0]

• 16 lines of code
• 2 McCabe index (conditional complexity)

def metric(namespace, metric_name, metric_value, metric_unit="None", dimensions={}):
    """
    Generate custom metrics

    This works by printing into a specific JSON format documented here:
    https://docs.aws.amazon.com/AmazonCloudWatch/latest/monitoring/CloudWatch_Embedded_Metric_Format_Specification.html
    """

    retval = copy.deepcopy(dimensions)
    # Always inject 'Environment' as a dimension
    retval["Environment"] = ENVIRONMENT

    # Inject the embedded metric for CloudWatch
    # See https://docs.aws.amazon.com/AmazonCloudWatch/latest/monitoring/CloudWatch_Embedded_Metric_Format.html
    retval["_aws"] = {
        "CloudWatchMetrics": [{
            "Namespace": namespace,
            "Dimensions": [list(retval.keys())],
            "Metrics": [{
                "Name": metric_name,
                "Unit": metric_unit
            }]
        }],
        "Timestamp": int(time.time()*1000)
    }

    # Inject the metric value in the JSON blob
    retval[metric_name] = metric_value

    print(json.dumps(retval))