import { ApiObject, Duration, Cron } from 'cdk8s';
import { Construct } from 'constructs';
import * as k8s from './imports/k8s';
import { JobProps } from './job';
import * as workload from './workload';
/**
 * Concurrency policy for CronJobs.
 */
export declare enum ConcurrencyPolicy {
    /**
     * This policy allows to run job concurrently.
     */
    ALLOW = "Allow",
    /**
     * This policy does not allow to run job concurrently. It does not let a new job to be scheduled if the previous one is not finished yet.
     */
    FORBID = "Forbid",
    /**
     * This policy replaces the currently running job if a new job is being scheduled.
     */
    REPLACE = "Replace"
}
/**
 * Properties for `CronJob`.
 */
export interface CronJobProps extends JobProps {
    /**
     * Specifies the time in which the job would run again. This is defined as a cron expression in the CronJob resource.
     */
    readonly schedule: Cron;
    /**
     * Specifies the timezone for the job. This helps aligining the schedule to follow the specified timezone.
     *
     * @see {@link https://en.wikipedia.org/wiki/List_of_tz_database_time_zones} for list of valid timezone values.
     *
     * @default - Timezone of kube-controller-manager process.
     */
    readonly timeZone?: string;
    /**
     * Specifies the concurrency policy for the job.
     *
     * @default ConcurrencyPolicy.Forbid
     */
    readonly concurrencyPolicy?: ConcurrencyPolicy;
    /**
     * Kubernetes attempts to start cron jobs at its schedule time, but this is not guaranteed. This deadline specifies
     * how much time can pass after a schedule point, for which kubernetes can still start the job.
     * For example, if this is set to 100 seconds, kubernetes is allowed to start the job at a maximum 100 seconds after
     * the scheduled time.
     *
     * Note that the Kubernetes CronJobController checks for things every 10 seconds, for this reason, a deadline below 10
     * seconds is not allowed, as it may cause your job to never be scheduled.
     *
     * In addition, kubernetes will stop scheduling jobs if more than 100 schedules were missed (for any reason).
     * This property also controls what time interval should kubernetes consider when counting for missed schedules.
     *
     * For example, suppose a CronJob is set to schedule a new Job every one minute beginning at 08:30:00,
     * and its `startingDeadline` field is not set. If the CronJob controller happens to be down from 08:29:00 to 10:21:00,
     * the job will not start as the number of missed jobs which missed their schedule is greater than 100.
     * However, if `startingDeadline` is set to 200 seconds, kubernetes will only count 3 missed schedules, and thus
     * start a new execution at 10:22:00.
     *
     * @default Duration.seconds(10)
     */
    readonly startingDeadline?: Duration;
    /**
     * Specifies if the cron job should be suspended. Only applies to future executions, current ones are remained untouched.
     *
     * @default false
     */
    readonly suspend?: boolean;
    /**
     * Specifies the number of successful jobs history retained. This would retain the Job and the associated Pod resource and can be useful for debugging.
     *
     * @default 3
     */
    readonly successfulJobsRetained?: number;
    /**
     * Specifies the number of failed jobs history retained. This would retain the Job and the associated Pod resource and can be useful for debugging.
     *
     * @default 1
     */
    readonly failedJobsRetained?: number;
}
/**
 * A CronJob is responsible for creating a Job and scheduling it based on provided cron schedule. This helps running Jobs in a recurring manner.
 */
export declare class CronJob extends workload.Workload {
    /**
     * The schedule this cron job is scheduled to run in.
     */
    readonly schedule: Cron;
    /**
     * The timezone which this cron job would follow to schedule jobs.
     */
    readonly timeZone?: string;
    /**
     * The policy used by this cron job to determine the concurrency mode in which to schedule jobs.
     */
    readonly concurrencyPolicy: string;
    /**
     * The time by which the running cron job needs to schedule the next job execution. The job is considered as failed if it misses this deadline.
     */
    readonly startingDeadline: Duration;
    /**
     * Whether or not the cron job is currently suspended or not.
     */
    readonly suspend: boolean;
    /**
     * The number of successful jobs retained by this cron job.
     */
    readonly successfulJobsRetained: number;
    /**
     * The number of failed jobs retained by this cron job.
     */
    readonly failedJobsRetained: number;
    /**
     * The properties of the recurring `Job` that this cronjob will schedule.
     */
    private readonly jobProperties;
    /**
     * @see base.Resource.apiObject
     */
    protected readonly apiObject: ApiObject;
    /**
     * Represents the resource type.
     */
    readonly resourceType = "cronjob";
    constructor(scope: Construct, id: string, props: CronJobProps);
    /**
     * @internal
     */
    _toKube(): k8s.CronJobSpec;
    /**
     * Returns the job spec.
     */
    private _toJobSpec;
}