Namespace AWS.Lambda.Powertools.Metrics

Classes

DimensionSet

List of key-value pairs with Metric Dimensions

JsonNamingPolicyDecorator

Class JsonNamingPolicyDecorator Implements the JsonNamingPolicy

Metadata

Class Metadata.

MetricDefinition

Class MetricDefinition.

MetricDirective

Class MetricDirective.

MetricResolutionJsonConverter

Class MetricResolutionJsonConverter. Implements the JsonConverter<T>

Metrics

Class Metrics. Implements the IMetrics

MetricsAspect

MetricsAspect class is responsible for capturing ColdStart metric and flushing metrics on function exit. Scope.Global - means aspect will operate as singleton.

MetricsAttribute

Creates custom metrics asynchronously by logging metrics to standard output following Amazon CloudWatch Embedded Metric Format (EMF).

Key features
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Aggregate up to 100 metrics using a single CloudWatch EMF object (large JSON blob)
Validate against common metric definitions mistakes (metric unit, values, max dimensions, max metrics, etc)
Metrics are created asynchronously by CloudWatch service, no custom stacks needed
Context manager to create a one off metric with a different dimension

Environment variables
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Variable name	Description
POWERTOOLS_SERVICE_NAME	string, service name
POWERTOOLS_METRICS_NAMESPACE	string, metric namespace

Parameters
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Parameter name	Description
Service	string, service name is used for metric dimension
Namespace	string, logical container where all metrics will be placed
CaptureColdStart	bool, captures cold start during Lambda execution, by default false
RaiseOnEmptyMetrics	bool, instructs metrics validation to throw exception if no metrics are provided, by default false