com.amazonaws.services.simpleworkflow.flow.interceptors.InvocationSchedule Maven / Gradle / Ivy

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The Amazon Web Services SDK for Java provides Java APIs for building software on AWS' cost-effective, scalable, and reliable infrastructure products. The AWS Java SDK allows developers to code against APIs for all of Amazon's infrastructure web services (Amazon S3, Amazon EC2, Amazon SQS, Amazon Relational Database Service, Amazon AutoScaling, etc).

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package com.amazonaws.services.simpleworkflow.flow.interceptors;

import java.util.Date;

import com.amazonaws.services.simpleworkflow.flow.common.FlowConstants;

/**
 * Encapsulates an invocation schedule.
 * 
 * @see AsyncScheduledExecutor
 * @see ScheduleDecorator
 * @author fateev
 */
public interface InvocationSchedule {

    /**
     * Return interval until the next invocation.
     * 
     * @param currentTime
     *            - current workflow time
     * @param startTime
     *            - time when workflow started
     * @param lastInvocationTime
     *            - time when last invocation happened
     * @param pastInvocatonsCount
     *            - how many invocations were done
     * @return time in seconds until the next invocation.
     *         {@link FlowConstants#NONE} if no more invocations should be
     *         scheduled.
     */
    long nextInvocationDelaySeconds(Date currentTime, Date startTime, Date lastInvocationTime, int pastInvocatonsCount);

}