| 1 | import * as appscaling from '@aws-cdk/aws-applicationautoscaling';
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| 2 | import { IConstruct } from '@aws-cdk/core';
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| 3 | /**
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| 4 | * Interface for scalable attributes
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| 5 | */
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| 6 | export interface IScalableFunctionAttribute extends IConstruct {
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| 7 | /**
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| 8 | * Scale out or in to keep utilization at a given level. The utilization is tracked by the
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| 9 | * LambdaProvisionedConcurrencyUtilization metric, emitted by lambda. See:
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| 10 | * https://docs.aws.amazon.com/lambda/latest/dg/monitoring-metrics.html#monitoring-metrics-concurrency
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| 11 | */
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| 12 | scaleOnUtilization(options: UtilizationScalingOptions): void;
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| 13 | /**
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| 14 | * Scale out or in based on schedule.
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| 15 | */
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| 16 | scaleOnSchedule(id: string, actions: appscaling.ScalingSchedule): void;
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| 17 | }
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| 18 | /**
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| 19 | * Options for enabling Lambda utilization tracking
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| 20 | */
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| 21 | export interface UtilizationScalingOptions extends appscaling.BaseTargetTrackingProps {
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| 22 | /**
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| 23 | * Utilization target for the attribute. For example, .5 indicates that 50 percent of allocated provisioned concurrency is in use.
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| 24 | */
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| 25 | readonly utilizationTarget: number;
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| 26 | }
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| 27 | /**
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| 28 | * Properties for enabling Lambda autoscaling
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| 29 | */
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| 30 | export interface AutoScalingOptions {
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| 31 | /**
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| 32 | * Minimum capacity to scale to
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| 33 | *
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| 34 | * @default 1
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| 35 | */
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| 36 | readonly minCapacity?: number;
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| 37 | /**
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| 38 | * Maximum capacity to scale to
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| 39 | */
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| 40 | readonly maxCapacity: number;
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| 41 | }
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