Package com.amazonaws.athena.connectors.cloudwatch.metrics

Class MetricUtils

java.lang.Object

com.amazonaws.athena.connectors.cloudwatch.metrics.MetricUtils

public class MetricUtils
extends Object

Helper which prepares and filters Cloudwatch Metrics requests.

Method Summary

Modifier and Type	Method	Description
protected static boolean	applyMetricConstraints(ConstraintEvaluator evaluator, com.amazonaws.services.cloudwatch.model.Metric metric, String statistic)	Filters metrics who have at least 1 metric dimension that matches DIMENSION_NAME_FIELD and DIMENSION_VALUE_FIELD filters.
protected static com.amazonaws.services.cloudwatch.model.GetMetricDataRequest	makeGetMetricDataRequest(ReadRecordsRequest readRecordsRequest)	Creates a Cloudwatch Metrics sample data request from the provided inputs
protected static void	pushDownPredicate(Constraints constraints, com.amazonaws.services.cloudwatch.model.ListMetricsRequest listMetricsRequest)	Attempts to push the supplied predicate constraints onto the Cloudwatch Metrics request.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Method Detail

applyMetricConstraints

protected static boolean applyMetricConstraints(ConstraintEvaluator evaluator,
                                                com.amazonaws.services.cloudwatch.model.Metric metric,
                                                String statistic)

Filters metrics who have at least 1 metric dimension that matches DIMENSION_NAME_FIELD and DIMENSION_VALUE_FIELD filters. This is just an optimization and isn't fully correct. We depend on the calling engine to apply full constraints. Also filters metric name and namespace.

Returns:

True if the supplied metric contains at least 1 Dimension matching the evaluator.

pushDownPredicate

protected static void pushDownPredicate(Constraints constraints,
                                        com.amazonaws.services.cloudwatch.model.ListMetricsRequest listMetricsRequest)

Attempts to push the supplied predicate constraints onto the Cloudwatch Metrics request.

makeGetMetricDataRequest

protected static com.amazonaws.services.cloudwatch.model.GetMetricDataRequest makeGetMetricDataRequest(ReadRecordsRequest readRecordsRequest)

Creates a Cloudwatch Metrics sample data request from the provided inputs

Parameters:

readRecordsRequest - The RecordReadRequest to make into a Cloudwatch Metrics Data request.

Returns:

The Cloudwatch Metrics Data request that matches the requested read operation.