Package org.axonframework.updates

Class UpdateChecker

java.lang.Object

org.axonframework.updates.UpdateChecker

All Implemented Interfaces:

Runnable, Lifecycle

public class UpdateChecker
extends Object
implements Runnable, Lifecycle

The UpdateChecker reports Anonymous usage data to AxonIQ periodically. In return, it receives information about available upgrades and vulnerabilities in the AxonIQ libraries used. These upgrades and vulnerabilities are reported to the configured UpdateCheckerReporter.

The task will not run if the user has opted out of anonymous usage reporting. There are three ways to disable the anonymous usage reporting:

1. Set the environment variable AXONIQ_UPDATE_CHECKER_DISABLED=true.
2. Run the JVM with -Daxoniq.update-checker.disabled=true.
3. Create the file $HOME/.axoniq/update-checker.properties with content disabled=true

These methods are listed in order of precedence, meaning that if the environment variable is set, it will take precedence over the JVM property and the file. Explicitly setting the property to disabled=false in a method of higher precedence will ignore the lower precedence disabled.

This class is not intended to be in use during the running of test suites and therefore does not run when it detects one.

Since:

4.12.0

Author:

Mitchell Herrijgers

Nested Class Summary

Nested classes/interfaces inherited from interface org.axonframework.lifecycle.Lifecycle

Lifecycle.LifecycleHandler, Lifecycle.LifecycleRegistry

Constructor Summary

Constructors

Constructor	Description
UpdateChecker(UpdateCheckerHttpClient client, UpdateCheckerReporter reporter, UsagePropertyProvider usagePropertyProvider)	Creates a new instance of UpdateCheckTask with the given UpdateCheckerHttpClient and UsagePropertyProvider.
UpdateChecker(UpdateCheckerHttpClient client, UpdateCheckerReporter reporter, UsagePropertyProvider usagePropertyProvider, ScheduledExecutorService executor)

Method Summary

Modifier and Type	Method	Description
boolean	isStarted()	Checks if the UpdateChecker has been started.
void	registerLifecycleHandlers(Lifecycle.LifecycleRegistry lifecycle)	Registers the activities to be executed in the various phases of an application's lifecycle.
void	run()
void	start()	Starts the anonymous usage reporting task.
void	stop()	Allows the task to be stopped, preventing any further updates from being checked.

Methods inherited from class java.lang.Object

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

Constructor Details

UpdateChecker

public UpdateChecker(UpdateCheckerHttpClient client,
 UpdateCheckerReporter reporter,
 UsagePropertyProvider usagePropertyProvider)

Creates a new instance of UpdateCheckTask with the given UpdateCheckerHttpClient and UsagePropertyProvider.

Parameters:

client - The HTTP client used to send requests to the telemetry endpoint.

reporter - The reporter that will handle the response from the telemetry endpoint.

usagePropertyProvider - The property provider used to determine if the update check is disabled.

UpdateChecker

public UpdateChecker(UpdateCheckerHttpClient client,
 UpdateCheckerReporter reporter,
 UsagePropertyProvider usagePropertyProvider,
 ScheduledExecutorService executor)

Method Details

registerLifecycleHandlers

public void registerLifecycleHandlers(@Nonnull
 Lifecycle.LifecycleRegistry lifecycle)

Description copied from interface: Lifecycle

Registers the activities to be executed in the various phases of an application's lifecycle. This could either be at startup, shutdown, or both.

Specified by:

registerLifecycleHandlers in interface Lifecycle

Parameters:

lifecycle - the lifecycle instance to register the handlers with

See Also:

• Lifecycle.LifecycleRegistry.onShutdown(int, Runnable)
• Lifecycle.LifecycleRegistry.onShutdown(int, LifecycleHandler)
• Lifecycle.LifecycleRegistry.onStart(int, Runnable)
• Lifecycle.LifecycleRegistry.onStart(int, LifecycleHandler)

start

public void start()

Starts the anonymous usage reporting task. If the user has opted out of anonymous usage reporting, or a testsuite is detected, the task will not be started.

run

public void run()

Specified by:

run in interface Runnable

stop

public void stop()

Allows the task to be stopped, preventing any further updates from being checked. Useful for terminating the task gracefully, for example, when the application is shutting down.

isStarted

public boolean isStarted()

Checks if the UpdateChecker has been started.

Returns:

true if the UpdateChecker has been started, false otherwise.