Package org.eblocker.server.common.update

Class AutomaticUpdater

java.lang.Object

org.eblocker.server.common.update.AutomaticUpdater

public class AutomaticUpdater
extends Object

This class is used to automatically run the system updates every day in a given time frame at a random time, so that the chance that all eBlocker devices try to request the server for updates at the same time is low. Therefore should the server load stay small, because it does not have to handle lots of parallel update requests.

Constructor Summary

Constructors

Constructor	Description
AutomaticUpdater(ScheduledExecutorService executorService, SystemUpdater updater, DataSource datasource, com.fasterxml.jackson.databind.ObjectMapper objectMapper, String configJSON, java.time.Clock clock, Random random, RegistrationService registrationService, ProductInfoService productInfoService)

Method Summary

Modifier and Type	Method	Description
static java.time.LocalDateTime	calculateNextUpdate(java.time.LocalDateTime now, java.time.LocalTime notBefore, java.time.LocalTime notAfter, double random0to1)	Calculate date and time for the next update.
AutomaticUpdaterConfiguration	getConfiguration()
java.time.LocalDateTime	getNextUpdate()
void	init()
boolean	isActivated()
void	setActivated(boolean activated)
void	setNewConfiguration(AutomaticUpdaterConfiguration config)	Update the time frame for automatic updates
void	start()	Start the update process; change this logic to control when updates are performed

Methods inherited from class java.lang.Object

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

Constructor Details

AutomaticUpdater

@Inject
public AutomaticUpdater(ScheduledExecutorService executorService,
 SystemUpdater updater,
 DataSource datasource,
 com.fasterxml.jackson.databind.ObjectMapper objectMapper,
 String configJSON,
 java.time.Clock clock,
 Random random,
 RegistrationService registrationService,
 ProductInfoService productInfoService)

Method Details

init

public void init()

start

public void start()

Start the update process; change this logic to control when updates are performed

setNewConfiguration

public void setNewConfiguration(AutomaticUpdaterConfiguration config)

Update the time frame for automatic updates

calculateNextUpdate

public static java.time.LocalDateTime calculateNextUpdate(java.time.LocalDateTime now,
 java.time.LocalTime notBefore,
 java.time.LocalTime notAfter,
 double random0to1)

Calculate date and time for the next update. If now is before the time window, the next update will be within the time window. If now is within or after the time window, the next update will be within the time window on the next day.

Parameters:

now - the current date and time

notBefore - start time of the window

notAfter - end time of the window

random0to1 - a random number between 0.0 and 1.0

Returns:

date and time of the next update

getNextUpdate

public java.time.LocalDateTime getNextUpdate()

setActivated

public void setActivated(boolean activated)

isActivated

public boolean isActivated()

getConfiguration

public AutomaticUpdaterConfiguration getConfiguration()