import * as cdk from "aws-cdk-lib";
import * as cloudwatch from "aws-cdk-lib/aws-cloudwatch";
import * as events from "aws-cdk-lib/aws-events";
import * as lambda from "aws-cdk-lib/aws-lambda";
import * as sqs from "aws-cdk-lib/aws-sqs";
import { Construct } from "constructs";
import { DataStage, DataStageProps } from "../pipelines/stage";
/**
 * Properties for the Lambda Function created by `SqsToLambdaStage`.
 */
export interface SqsToLambdaStageFunctionProps extends lambda.FunctionProps {
    /**
     * Amount of errored function invocations before triggering CloudWatch alarm.
     * @default 5
     */
    readonly errorsAlarmThreshold?: number;
    /**
     * The number of periods over which data is compared to the specified threshold.
     * @default 1
     */
    readonly errorsEvaluationPeriods?: number;
    /**
     * Comparison operator for evaluating alarms.
     * @default cloudwatch.ComparisonOperator.GREATER_THAN_THRESHOLD
     */
    readonly errorsComparisonOperator?: cloudwatch.ComparisonOperator;
}
/**
 * Properties for `SqsToLambdaStage`.
 */
export interface SqsToLambdaStageProps extends DataStageProps {
    /**
     * Preexisting Lambda Function to use in stage.
     * If not provided, a new function will be created.
     */
    readonly lambdaFunction?: lambda.IFunction;
    /**
     * Properties for the Lambda Function that will be created by this construct
     * (if `lambdaFunction` is not provided).
     */
    readonly lambdaFunctionProps?: SqsToLambdaStageFunctionProps;
    /**
     * Preexisting SQS Queue to use in stage.
     * If not provided, a new queue will be created.
     */
    readonly sqsQueue?: sqs.IQueue;
    /**
     * Properties for the SQS Queue that will be created by this construct
     * (if `sqsQueue` is not provided).
     */
    readonly sqsQueueProps?: sqs.QueueProps;
    /**
     * The maximum number of records retrieved from the event source at the function invocation time.
     * @default 10
     */
    readonly batchSize?: number;
    /**
     * The maximum amount of time to gather records before invoking the function.
     * Valid Range: Minimum value of 0 minutes, maximum value of 5 minutes.
     * Default: - no batching window.
     */
    readonly maxBatchingWindow?: cdk.Duration;
    /**
     * Determines if DLQ is enabled.
     * @default false
     */
    readonly dlqEnabled?: boolean;
    /**
     * The number of times a message can be unsuccessfully dequeued before
     * being moved to the dead-letter queue.
     * @default 1
     */
    readonly maxReceiveCount?: number;
    /**
     * Message Group ID for messages sent to this queue.
     * Required for FIFO queues.
     */
    readonly messageGroupId?: string;
}
/**
 * Stage implements an Amazon SQS queue connected to an AWS Lambda function, with an optional DLQ.
 */
export declare class SqsToLambdaStage extends DataStage {
    readonly targets?: events.IRuleTarget[];
    readonly eventPattern?: events.EventPattern;
    readonly function: lambda.IFunction;
    readonly queue: sqs.IQueue;
    readonly deadLetterQueue?: sqs.Queue;
    /**
     * Constructs `SqsToLambdaStage`.
     * @param scope Scope within which this construct is defined.
     * @param id Identifier of the stage.
     * @param props Properties for the stage.
     */
    constructor(scope: Construct, id: string, props: SqsToLambdaStageProps);
}