Package io.meeds.commons.digest.service

Class DigestDueCalculator

java.lang.Object

io.meeds.commons.digest.service.DigestDueCalculator

@Component
public class DigestDueCalculator
extends Object

Answers "is this user due now?" in his own local calendar, in Java and not in SQL, so that the rule is the same on every database. The rule: the most recent scheduled occurrence (the send hour of the send day) has passed since his watermark, and his watermark is not from that occurrence's day already. Consequences, all wanted: at most one daily digest per local day and one weekly per local week, always at the send hour or later; a run missed at the send hour is caught up by the next run; a frequency switched on today sends its first digest tomorrow; a timezone change never causes a second email the same local day.

Constructor Summary

Constructors

Constructor	Description
DigestDueCalculator(int sendHour, String weeklyDay)

Method Summary

Modifier and Type	Method	Description
boolean	isDue(DigestUserEntity user, io.meeds.commons.digest.model.DigestFrequency frequency, Instant now)
static ZoneId	zoneOf(String timeZone)

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Details

DigestDueCalculator

public DigestDueCalculator(@Value("${exo.notification.digest.daily.hour:18}")
 int sendHour,
 @Value("${exo.notification.digest.weekly.day:FRIDAY}")
 String weeklyDay)

Method Details

isDue

public boolean isDue(DigestUserEntity user,
 io.meeds.commons.digest.model.DigestFrequency frequency,
 Instant now)

zoneOf

public static ZoneId zoneOf(String timeZone)

Parameters:

timeZone - the timezone stored for the user, may be null or unknown

Returns:

that timezone, or the server one when the user has none (assumption A1 of the specification)