Package com.google.gerrit.server.index

Class VersionManager

java.lang.Object

com.google.gerrit.server.index.VersionManager

All Implemented Interfaces:

LifecycleListener, EventListener

public abstract class VersionManager
extends Object
implements LifecycleListener

Trigger for online reindexing in case the index version in use is not the latest.

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static class	VersionManager.Version<V>

Field Summary

Fields

Modifier and Type	Field	Description
protected Map<String,IndexDefinition<?,?,?>>	defs
protected boolean	onlineUpgrade
protected Map<String,OnlineReindexer<?,?,?>>	reindexers
protected String	runReindexMsg
protected SitePaths	sitePaths

Constructor Summary

Constructors

Modifier	Constructor	Description
protected	VersionManager(SitePaths sitePaths, PluginSetContext<OnlineUpgradeListener> listeners, Collection<IndexDefinition<?,?,?>> defs, boolean onlineUpgrade)

Method Summary

Modifier and Type	Method	Description
boolean	activateLatestIndex(String name)	Activate the latest index if the current index is not already the latest.
protected GerritIndexStatus	createIndexStatus()
static boolean	getOnlineUpgrade(org.eclipse.jgit.lib.Config cfg)
protected <K,V,I extends Index<K,V>> void	initIndex(IndexDefinition<K,V,I> def, GerritIndexStatus cfg)
boolean	isKnownIndex(String name)	Tells if an index with this name is currently known or not.
protected abstract <K,V,I extends Index<K,V>> TreeMap<Integer,VersionManager.Version<V>>	scanVersions(IndexDefinition<K,V,I> def, GerritIndexStatus cfg)
void	start()	Invoked when the server is starting.
boolean	startReindexer(String name, boolean force)	Start the online reindexer if the current index is not already the latest.
void	stop()	Invoked when the server is stopping.

Methods inherited from class java.lang.Object

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

Field Detail

onlineUpgrade

protected final boolean onlineUpgrade

runReindexMsg

protected final String runReindexMsg

sitePaths

protected final SitePaths sitePaths

defs

protected final Map<String,IndexDefinition<?,?,?>> defs

reindexers

protected final Map<String,OnlineReindexer<?,?,?>> reindexers

Constructor Detail

VersionManager

protected VersionManager(SitePaths sitePaths,
                         PluginSetContext<OnlineUpgradeListener> listeners,
                         Collection<IndexDefinition<?,?,?>> defs,
                         boolean onlineUpgrade)

Method Detail

getOnlineUpgrade

public static boolean getOnlineUpgrade(org.eclipse.jgit.lib.Config cfg)

start

public void start()

Description copied from interface: LifecycleListener

Invoked when the server is starting.

Specified by:

start in interface LifecycleListener

stop

public void stop()

Description copied from interface: LifecycleListener

Invoked when the server is stopping.

Specified by:

stop in interface LifecycleListener

startReindexer

public boolean startReindexer(String name,
                              boolean force)
                       throws ReindexerAlreadyRunningException

Start the online reindexer if the current index is not already the latest.

Parameters:

name - index name

force - start re-index

Returns:

true if started, otherwise false.

Throws:

ReindexerAlreadyRunningException

activateLatestIndex

public boolean activateLatestIndex(String name)
                            throws ReindexerAlreadyRunningException

Activate the latest index if the current index is not already the latest.

Parameters:

name - index name

Returns:

true if index was activated, otherwise false.

Throws:

ReindexerAlreadyRunningException

isKnownIndex

public boolean isKnownIndex(String name)

Tells if an index with this name is currently known or not.

Parameters:

name - index name

Returns:

true if index is known and can be used, otherwise false.

initIndex

protected <K,V,I extends Index<K,V>> void initIndex(IndexDefinition<K,V,I> def,
                                                                      GerritIndexStatus cfg)

createIndexStatus

protected GerritIndexStatus createIndexStatus()

scanVersions

protected abstract <K,V,I extends Index<K,V>> TreeMap<Integer,VersionManager.Version<V>> scanVersions(IndexDefinition<K,V,I> def,
                                                                                                                              GerritIndexStatus cfg)