Class MigrateIndexTaskQueueToJournalUpgradeTask

  extended by com.atlassian.confluence.upgrade.AbstractUpgradeTask
      extended by com.atlassian.confluence.upgrade.AbstractDeferredRunUpgradeTask
          extended by com.atlassian.confluence.upgrade.upgradetask.MigrateIndexTaskQueueToJournalUpgradeTask
All Implemented Interfaces:
BackupSupport, DatabaseUpgradeTask, DeferredUpgradeTask, UpgradeTask, UpgradeTaskInfo, org.springframework.beans.factory.BeanNameAware

public class MigrateIndexTaskQueueToJournalUpgradeTask
extends AbstractDeferredRunUpgradeTask
implements DatabaseUpgradeTask

This upgrade task migrates recent entries from index queue to journal subsystem. Not all index queue entries will be migrated as it would take too much time. In standalone installations only unprocessed entries and at least one processed entry will be migrated. In cluster installations entries unprocessed on the local node and processed entries for a few minutes worth will be migrated.

While this task will be run on only the first node. A subsequent upgrade task (InitialiseIndexJournalStateUpgradeTask) will be run on all nodes in order to update their idea of which journal entries they need to process.


Constructor Summary
MigrateIndexTaskQueueToJournalUpgradeTask(net.sf.hibernate.SessionFactory sessionFactory, HibernateJournalDao hibernateJournalDao, ClusterConfigurationHelper clusterConfigurationHelper)
Method Summary
 boolean breaksBackwardCompatibility()
          Returns true if a new export can't be imported in an older instance.
 void doDeferredUpgrade()
          Run the upgrade that was deferred by an earlier call to doUpgrade.
 String getBuildNumber()
 boolean runOnSpaceImport()
          Returns true if an older Space can't be imported in a new instance without running this task.
Methods inherited from class com.atlassian.confluence.upgrade.AbstractDeferredRunUpgradeTask
doUpgrade, isUpgradeRequired, setUpgradeRequired
Methods inherited from class com.atlassian.confluence.upgrade.AbstractUpgradeTask
addAllErrors, addError, addError, getConstraint, getErrors, getName, getShortDescription, isDatabaseUpgrade, setBeanName, setBuildNumber, validate
Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
Methods inherited from interface com.atlassian.confluence.upgrade.UpgradeTask
doUpgrade, getConstraint, getErrors, validate
Methods inherited from interface com.atlassian.confluence.upgrade.UpgradeTaskInfo
getName, getShortDescription, isDatabaseUpgrade

Constructor Detail


public MigrateIndexTaskQueueToJournalUpgradeTask(net.sf.hibernate.SessionFactory sessionFactory,
                                                 HibernateJournalDao hibernateJournalDao,
                                                 ClusterConfigurationHelper clusterConfigurationHelper)
Method Detail


public boolean runOnSpaceImport()
Description copied from interface: BackupSupport
Returns true if an older Space can't be imported in a new instance without running this task. For example:

Note that tasks don't run on space import yet, so we just reject the import in this case.

Specified by:
runOnSpaceImport in interface BackupSupport


public boolean breaksBackwardCompatibility()
Description copied from interface: BackupSupport
Returns true if a new export can't be imported in an older instance. Breaking compatibility means a snapshot of the new version will not work at all with the previous version. For example: The best way to test is whether a newer export can be imported (with fully working features) in an older instance.

Specified by:
breaksBackwardCompatibility in interface BackupSupport


public void doDeferredUpgrade()
                       throws Exception
Description copied from interface: DeferredUpgradeTask
Run the upgrade that was deferred by an earlier call to doUpgrade.

Specified by:
doDeferredUpgrade in interface DeferredUpgradeTask


public String getBuildNumber()
Specified by:
getBuildNumber in interface UpgradeTaskInfo
getBuildNumber in class AbstractUpgradeTask
The build number that this upgrade is applicable to

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