@aws-cdk/aws-lambda
Version:
The CDK Construct Library for AWS::Lambda
36 lines • 5.18 kB
JavaScript
;
Object.defineProperty(exports, "__esModule", { value: true });
exports.ScalableFunctionAttribute = void 0;
const appscaling = require("@aws-cdk/aws-applicationautoscaling");
const core_1 = require("@aws-cdk/core");
/**
* A scalable lambda alias attribute
*/
class ScalableFunctionAttribute extends appscaling.BaseScalableAttribute {
constructor(scope, id, props) {
super(scope, id, props);
}
/**
* Scale out or in to keep utilization at a given level. The utilization is tracked by the
* LambdaProvisionedConcurrencyUtilization metric, emitted by lambda. See:
* https://docs.aws.amazon.com/lambda/latest/dg/monitoring-metrics.html#monitoring-metrics-concurrency
*/
scaleOnUtilization(options) {
if (!core_1.Token.isUnresolved(options.utilizationTarget) && (options.utilizationTarget < 0.1 || options.utilizationTarget > 0.9)) {
throw new Error(`Utilization Target should be between 0.1 and 0.9. Found ${options.utilizationTarget}.`);
}
super.doScaleToTrackMetric('Tracking', {
targetValue: options.utilizationTarget,
predefinedMetric: appscaling.PredefinedMetric.LAMBDA_PROVISIONED_CONCURRENCY_UTILIZATION,
...options,
});
}
/**
* Scale out or in based on schedule.
*/
scaleOnSchedule(id, action) {
super.doScaleOnSchedule(id, action);
}
}
exports.ScalableFunctionAttribute = ScalableFunctionAttribute;
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