import { Construct } from '@aws-cdk/cdk';
import { EventPattern } from './event-pattern';
import { RuleArn } from './events.generated';
import { TargetInputTemplate } from './input-options';
import { EventRuleRef } from './rule-ref';
import { IEventRuleTarget } from './target';
export interface EventRuleProps {
    /**
     * A description of the rule's purpose.
     */
    description?: string;
    /**
     * A name for the rule. If you don't specify a name, AWS CloudFormation
     * generates a unique physical ID and uses that ID for the rule name. For
     * more information, see Name Type.
     */
    ruleName?: string;
    /**
     * Indicates whether the rule is enabled.
     * @default Rule is enabled
     */
    enabled?: boolean;
    /**
     * The schedule or rate (frequency) that determines when CloudWatch Events
     * runs the rule. For more information, see Schedule Expression Syntax for
     * Rules in the Amazon CloudWatch User Guide.
     *
     * @see http://docs.aws.amazon.com/AmazonCloudWatch/latest/events/ScheduledEvents.html
     *
     * You must specify this property, the `eventPattern` property, or both.
     */
    scheduleExpression?: string;
    /**
     * Describes which events CloudWatch Events routes to the specified target.
     * These routed events are matched events. For more information, see Events
     * and Event Patterns in the Amazon CloudWatch User Guide.
     *
     * @see
     * http://docs.aws.amazon.com/AmazonCloudWatch/latest/DeveloperGuide/CloudWatchEventsandEventPatterns.html
     *
     * You must specify this property (either via props or via
     * `addEventPattern`), the `scheduleExpression` property, or both. The
     * method `addEventPattern` can be used to add filter values to the event
     * pattern.
     */
    eventPattern?: EventPattern;
    /**
     * Targets to invoke when this rule matches an event.
     *
     * Input will be the full matched event. If you wish to specify custom
     * target input, use `addTarget(target[, inputOptions])`.
     */
    targets?: IEventRuleTarget[];
}
/**
 * Defines a CloudWatch Event Rule in this stack.
 */
export declare class EventRule extends EventRuleRef {
    readonly ruleArn: RuleArn;
    private readonly targets;
    private readonly eventPattern;
    private scheduleExpression?;
    constructor(parent: Construct, name: string, props?: EventRuleProps);
    /**
     * Adds a target to the rule. The abstract class RuleTarget can be extended to define new
     * targets.
     *
     * No-op if target is undefined.
     */
    addTarget(target?: IEventRuleTarget, inputOptions?: TargetInputTemplate): void;
    /**
     * Adds an event pattern filter to this rule. If a pattern was already specified,
     * these values are merged into the existing pattern.
     *
     * For example, if the rule already contains the pattern:
     *
     *      {
     *          "resources": [ "r1" ],
     *          "detail": {
     *              "hello": [ 1 ]
     *          }
     *      }
     *
     * And `addEventPattern` is called with the pattern:
     *
     *      {
     *          "resources": [ "r2" ],
     *          "detail": {
     *              "foo": [ "bar" ]
     *          }
     *      }
     *
     * The resulting event pattern will be:
     *
     *      {
     *          "resources": [ "r1", "r2" ],
     *          "detail": {
     *              "hello": [ 1 ],
     *              "foo": [ "bar" ]
     *          }
     *      }
     *
     */
    addEventPattern(eventPattern?: EventPattern): void;
    validate(): string[];
    private renderTargets;
    private renderEventPattern;
}