DBLockBasedCacheInitializer (Keycloak Docs Distribution 21.1.1 API)

java.lang.Object
- org.keycloak.models.sessions.infinispan.initializer.CacheInitializer
- - org.keycloak.models.sessions.infinispan.initializer.DBLockBasedCacheInitializer

```
public class DBLockBasedCacheInitializer
extends CacheInitializer
```
Encapsulates preloading of sessions within the DB Lock. This DB-aware lock ensures that "startLoading" is done on single DC and the other DCs need to wait.

Author:

Marek Posolda

Constructor Summary

Constructors
Constructor Description

DBLockBasedCacheInitializer(KeycloakSession session, CacheInitializer delegate)

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`protected int`	`getProgressIndicator()`	Returns an integer which captures current progress.
`protected int`	`getStalledTimeoutInSeconds()`
`void`	`initCache()`
`protected boolean`	`isCoordinator()`
`protected boolean`	`isFinished()`
`protected void`	`startLoading()`	Just coordinator will run this.

Methods inherited from class org.keycloak.models.sessions.infinispan.initializer.CacheInitializer
loadSessions

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Constructor Detail
  - DBLockBasedCacheInitializer
```
public DBLockBasedCacheInitializer(KeycloakSession session,
                                   CacheInitializer delegate)
```
- Method Detail
  - initCache
```
public void initCache()
```
    Overrides:
    
    initCache in class CacheInitializer
  - isFinished
```
protected boolean isFinished()
```
    Specified by:
    
    isFinished in class CacheInitializer
  - isCoordinator
```
protected boolean isCoordinator()
```
    Specified by:
    
    isCoordinator in class CacheInitializer
  - getProgressIndicator
```
protected int getProgressIndicator()
```
    Description copied from class: CacheInitializer
    
    Returns an integer which captures current progress. If there is a progress in loading, this indicator must be different most of the time so that it does not hit 30-seconds limit.
    
    Specified by:
    
    getProgressIndicator in class CacheInitializer
    
    Returns:
    
    See Also:
    
    #stalledTimeoutInSeconds
  - getStalledTimeoutInSeconds
```
protected int getStalledTimeoutInSeconds()
```
    Specified by:
    
    getStalledTimeoutInSeconds in class CacheInitializer
  - startLoading
```
protected void startLoading()
```
    Just coordinator will run this. And there is DB-lock, so the delegate.startLoading() will be permitted just by the single DC
    
    Specified by:
    
    startLoading in class CacheInitializer