com.atlassian.jira.cluster.zdu

Class DefaultClusterUpgradePluginLoaderFactory

java.lang.Object

com.atlassian.jira.cluster.zdu.DefaultClusterUpgradePluginLoaderFactory

All Implemented Interfaces:

ClusterUpgradePluginLoaderFactory

public class DefaultClusterUpgradePluginLoaderFactory
extends Object
implements ClusterUpgradePluginLoaderFactory

Creates a plugin loader which can freeze the list of loaded plugins - effectively stopping it from loading new plugins put into the installed-plugins directory. How this works is defined in the FreezeFileManager. Nodes that are in a cluster which is not in UpgradeState.STABLE state and have the same build number as the cluster should freeze their plugins.

Specifically, it should create a freeze file when:

• It caused the transition from UpgradeState.STABLE to UpgradeState.READY_TO_UPGRADE

and similarly, it should delete the freeze file when:

• It caused the transition from UpgradeState.RUNNING_UPGRADE_TASKS to UpgradeState.STABLE

Additionally, a node should use the freeze (but not create it) for plugin loading when:

• It starts up and joins a cluster that is not in UpgradeState.STABLE state and its application build number is equal to the cluster build number.
• It receives a cluster message that the cluster upgrade state is now not UpgradeState.STABLE and its application build number is equal to the cluster build number.

Since:

v7.3

See Also:

DefaultClusterUpgradeStateManager, FreezeFileManager, UpgradeState

Constructor Summary

Constructors

Constructor and Description

DefaultClusterUpgradePluginLoaderFactory(com.atlassian.event.api.EventListenerRegistrar eventListenerRegistrar, ClusterUpgradeStateManager clusterUpgradeStateManager, MessageHandlerService messageHandlerService, BuildUtilsInfo buildUtilsInfo, com.atlassian.plugin.event.PluginEventManager pluginEventManager, FreezeFileScannerFactory freezeFileScannerFactory, FreezeFileManagerFactory freezeFileManagerFactory, NodeBuildInfoFactory nodeBuildInfoFactory)

Method Summary

Modifier and Type	Method and Description
com.atlassian.plugin.loaders.PluginLoader	create(com.atlassian.plugin.loaders.classloading.Scanner installedPluginsScanner, File installedPluginsDirectory, File freezeFile, List<com.atlassian.plugin.factories.PluginFactory> pluginFactories)

Methods inherited from class java.lang.Object

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

Constructor Detail

DefaultClusterUpgradePluginLoaderFactory

public DefaultClusterUpgradePluginLoaderFactory(com.atlassian.event.api.EventListenerRegistrar eventListenerRegistrar,
                                                ClusterUpgradeStateManager clusterUpgradeStateManager,
                                                MessageHandlerService messageHandlerService,
                                                BuildUtilsInfo buildUtilsInfo,
                                                com.atlassian.plugin.event.PluginEventManager pluginEventManager,
                                                FreezeFileScannerFactory freezeFileScannerFactory,
                                                FreezeFileManagerFactory freezeFileManagerFactory,
                                                NodeBuildInfoFactory nodeBuildInfoFactory)

Method Detail

create

public com.atlassian.plugin.loaders.PluginLoader create(com.atlassian.plugin.loaders.classloading.Scanner installedPluginsScanner,
                                                        File installedPluginsDirectory,
                                                        File freezeFile,
                                                        List<com.atlassian.plugin.factories.PluginFactory> pluginFactories)

Specified by:

create in interface ClusterUpgradePluginLoaderFactory