com.onyxscheduler.domain.Trigger.java Source code

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Here is the source code for com.onyxscheduler.domain.Trigger.java

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/*
 * Copyright (C) 2015
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package com.onyxscheduler.domain;

import com.fasterxml.jackson.annotation.JsonIgnore;

import org.quartz.CronScheduleBuilder;
import org.quartz.CronTrigger;
import org.quartz.TriggerBuilder;

import java.time.Instant;
import java.util.Date;
import java.util.Objects;

import javax.validation.constraints.AssertTrue;

/**
 * Specifies a scheduling to be used in a job. <p/> Simpler abstraction than quartz triggers which
 * easily binds to the desired JSON representation for triggers.
 */
public class Trigger {

    private Instant when;
    private String cron;

    public static Trigger fromFixedTime(Instant when) {
        Trigger trigger = new Trigger();
        trigger.setWhen(when);
        return trigger;
    }

    public static Trigger fromCronExpression(String cron) {
        Trigger trigger = new Trigger();
        trigger.setCron(cron);
        return trigger;
    }

    public Instant getWhen() {
        return when;
    }

    public void setWhen(Instant when) {
        this.when = when;
    }

    public String getCron() {
        return cron;
    }

    public void setCron(String cron) {
        this.cron = cron;
    }

    @AssertTrue(message = "Either 'cron' or 'when' should be specified")
    @JsonIgnore
    public boolean isValid() {
        return cron != null ^ when != null;
    }

    public org.quartz.Trigger buildQuartzTrigger() {
        if (cron != null) {
            return TriggerBuilder.newTrigger().withSchedule(CronScheduleBuilder.cronSchedule(cron)).build();
        } else {
            return TriggerBuilder.newTrigger().startAt(Date.from(when)).build();
        }
    }

    public static Trigger fromQuartzTrigger(org.quartz.Trigger quartzTrigger) {
        if (quartzTrigger instanceof CronTrigger) {
            CronTrigger conTrigger = (CronTrigger) quartzTrigger;
            return fromCronExpression(conTrigger.getCronExpression());
        } else {
            return fromFixedTime(quartzTrigger.getStartTime().toInstant());
        }
    }

    @Override
    public int hashCode() {
        return Objects.hash(when, cron);
    }

    @Override
    public boolean equals(Object obj) {
        if (this == obj) {
            return true;
        }
        if (obj == null || getClass() != obj.getClass()) {
            return false;
        }
        final Trigger other = (Trigger) obj;
        return Objects.equals(this.when, other.when) && Objects.equals(this.cron, other.cron);
    }

    @Override
    public String toString() {
        return com.google.common.base.Objects.toStringHelper(this).add("when", when).add("cron", cron).toString();
    }

}