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/*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you 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 org.kie.kogito.timer.impl;
import java.io.IOException;
import java.io.ObjectInput;
import java.io.ObjectOutput;
import java.util.Arrays;
import java.util.Calendar;
import java.util.Date;
import org.kie.kogito.timer.Calendars;
import org.kie.kogito.timer.Trigger;
public class IntervalTrigger
implements
Trigger {
private Date startTime;
private Date endTime;
private int repeatLimit;
private int repeatCount;
private Date nextFireTime;
private Date lastFireTime;
private Date createdTime;
private long delay;
private long period;
private String[] calendarNames;
private Calendars calendars;
public IntervalTrigger() {
}
public IntervalTrigger(long timestamp,
Date startTime,
Date endTime,
int repeatLimit,
long delay,
long period,
String[] calendarNames,
Calendars calendars) {
this(timestamp, startTime, endTime, repeatLimit, delay, period, calendarNames, calendars, null, null);
}
public IntervalTrigger(long timestamp,
Date startTime,
Date endTime,
int repeatLimit,
long delay,
long period,
String[] calendarNames,
Calendars calendars,
Date createdTime,
Date lastFireTime) {
this.delay = delay;
this.period = period;
this.createdTime = createdTime == null ? new Date(timestamp) : createdTime;
this.lastFireTime = lastFireTime;
if (startTime == null) {
this.nextFireTime = new Date(timestamp + delay);
startTime = new Date(timestamp);
}
setStartTime(startTime);
if (endTime != null) {
setEndTime(endTime);
}
this.repeatLimit = repeatLimit;
this.calendarNames = calendarNames;
this.calendars = calendars;
setFirstFireTime(timestamp);
// Update to next include time, if we have calendars
updateToNextIncludeDate();
}
public int getRepeatLimit() {
return repeatLimit;
}
public int getRepeatCount() {
return repeatCount;
}
public Date getNextFireTime() {
return nextFireTime;
}
public long getPeriod() {
return period;
}
public String[] getCalendarNames() {
return calendarNames;
}
public Calendars getCalendars() {
return calendars;
}
public Date getStartTime() {
return this.startTime;
}
public void setStartTime(Date startTime) {
if (startTime == null) {
throw new IllegalArgumentException("Start time cannot be null");
}
Date eTime = getEndTime();
if (eTime != null && eTime.before(startTime)) {
throw new IllegalArgumentException("End time cannot be before start time");
}
// round off millisecond...
// Note timeZone is not needed here as parameter for
// Calendar.getInstance(),
// since time zone is implicit when using a Date in the setTime method.
Calendar cl = Calendar.getInstance();
cl.setTime(startTime);
this.startTime = cl.getTime();
}
/**
*
* Get the time at which the CronTrigger
should quit
* repeating - even if repeastCount isn't yet satisfied.
*
*/
public Date getEndTime() {
return this.endTime;
}
public void setEndTime(Date endTime) {
Date sTime = getStartTime();
if (sTime != null && endTime != null && sTime.after(endTime)) {
throw new IllegalArgumentException("End time cannot be before start time");
}
this.endTime = endTime;
}
public Date getLastFireTime() {
return lastFireTime;
}
public Date getCreatedTime() {
return createdTime;
}
private void setFirstFireTime(long timestamp) {
if (this.nextFireTime == null) {
long start = this.startTime.getTime() + delay;
if (timestamp > start) {
long distanceFromLastPhase = (timestamp - start) % period;
if (distanceFromLastPhase == 0) {
this.nextFireTime = new Date(timestamp);
} else {
long phase = period - distanceFromLastPhase;
this.nextFireTime = new Date(timestamp + phase);
}
} else {
this.nextFireTime = new Date(start);
}
}
if (getEndTime() != null && this.nextFireTime.after(getEndTime())) {
this.nextFireTime = null;
}
Date pot = getTimeAfter();
if (getEndTime() != null && pot != null && pot.after(getEndTime())) {
this.nextFireTime = null;
}
}
public Date hasNextFireTime() {
return nextFireTime;
}
public synchronized Date nextFireTime() {
if (this.nextFireTime == null) {
return null;
}
Date date = this.nextFireTime;
// FIXME: this is not safe for serialization
this.nextFireTime = getTimeAfter();
updateToNextIncludeDate();
if (this.endTime != null && this.nextFireTime.after(this.endTime)) {
this.nextFireTime = null;
} else if (repeatLimit != -1 && repeatCount >= repeatLimit) {
this.nextFireTime = null;
}
lastFireTime = date;
return date;
}
private Date getTimeAfter() {
this.repeatCount++;
Date date;
if (this.period != 0) {
// repeated fires for the given period
date = new Date(nextFireTime.getTime() + this.period);
} else {
date = null;
}
return date;
}
public void readExternal(ObjectInput in) throws IOException,
ClassNotFoundException {
this.nextFireTime = (Date) in.readObject();
this.period = in.readLong();
this.delay = in.readLong();
}
public void writeExternal(ObjectOutput out) throws IOException {
out.writeObject(this.nextFireTime);
out.writeLong(this.period);
out.writeLong(this.delay);
}
public void updateToNextIncludeDate() {
if (this.calendars == null || calendarNames == null || calendarNames.length == 0) {
// There are no assigned calendars
return;
}
// If we have calendars, check we can fire, or get next time until we can fire.
while (this.nextFireTime != null && (this.endTime == null || this.nextFireTime.before(this.endTime))) {
// this will loop forever if the trigger repeats forever and
// included calendar position cannot be found
boolean included = true;
for (String calName : this.calendarNames) {
// all calendars must not block, as soon as one blocks break
org.kie.kogito.timer.Calendar cal = this.calendars.get(calName);
if (cal != null && !cal.isTimeIncluded(this.nextFireTime.getTime())) {
included = false;
break;
}
}
if (included) {
// if no calendars blocked, break
break;
} else {
// otherwise increase the time and try again
this.nextFireTime = getTimeAfter();
}
}
}
public void setRepeatLimit(int repeatLimit) {
this.repeatLimit = repeatLimit;
}
public void setRepeatCount(int repeatCount) {
this.repeatCount = repeatCount;
}
public void setNextFireTime(Date nextFireTime) {
this.nextFireTime = nextFireTime;
}
public void setPeriod(long period) {
this.period = period;
}
public void setCalendarNames(String[] calendarNames) {
this.calendarNames = calendarNames;
}
public void setCalendars(Calendars calendars) {
this.calendars = calendars;
}
@Override
public String toString() {
return "IntervalTrigger [startTime=" + startTime + ", endTime=" + endTime + ", repeatLimit=" + repeatLimit + ", repeatCount=" + repeatCount + ", nextFireTime=" + nextFireTime + ", delay="
+ delay + ", period=" + period + ", calendarNames=" + Arrays.toString(calendarNames) + ", calendars=" + calendars + "]";
}
}
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