Package org.alfresco.elasticsearch.batchindexing

Class ContinuousReindexingService

java.lang.Object

org.alfresco.elasticsearch.batchindexing.ContinuousReindexingService

All Implemented Interfaces:

org.springframework.context.Lifecycle, org.springframework.context.Phased, org.springframework.context.SmartLifecycle

public class ContinuousReindexingService
extends Object
implements org.springframework.context.SmartLifecycle

Continuously polls the Alfresco DB for new/changed nodes and launches reindexByDate Spring Batch jobs one at a time. Consecutive time windows intentionally overlap (controlled by the overlap property) to catch late DB writes, but job executions never run concurrently.

Uses ScheduledExecutorService.scheduleWithFixedDelay(java.lang.Runnable, long, long, java.util.concurrent.TimeUnit) so the next tick only starts after the previous cycle completes plus the configured polling delay.

Consecutive failures trigger exponential backoff up to maxPollingInterval to avoid hammering a down ES/DB cluster.

Field Summary

Fields

Modifier and Type	Field	Description
static final Runnable	TERMINATE_JVM_ON_LOCK_CONFLICT

Fields inherited from interface org.springframework.context.SmartLifecycle

DEFAULT_PHASE

Constructor Summary

Constructors

Constructor	Description
ContinuousReindexingService(org.springframework.batch.core.launch.JobLauncher jobLauncher, org.springframework.batch.core.job.Job reindexByDateJob, ElasticsearchWatermarkStore watermarkStore, ContinuousReindexingProperties properties, Runnable terminationAction)

Method Summary

Modifier and Type	Method	Description
void	destroy()	Shuts down the executor permanently.
int	getPhase()
boolean	isAutoStartup()
boolean	isRunning()
void	start()
void	stop()
void	stop(Runnable callback)

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.springframework.context.SmartLifecycle

isPauseable

Field Details

TERMINATE_JVM_ON_LOCK_CONFLICT

public static final Runnable TERMINATE_JVM_ON_LOCK_CONFLICT

Constructor Details

ContinuousReindexingService

public ContinuousReindexingService(org.springframework.batch.core.launch.JobLauncher jobLauncher,
 org.springframework.batch.core.job.Job reindexByDateJob,
 ElasticsearchWatermarkStore watermarkStore,
 ContinuousReindexingProperties properties,
 Runnable terminationAction)

Method Details

start

public void start()

Specified by:

start in interface org.springframework.context.Lifecycle

stop

public void stop()

Specified by:

stop in interface org.springframework.context.Lifecycle

stop

public void stop(Runnable callback)

Specified by:

stop in interface org.springframework.context.SmartLifecycle

destroy

public void destroy()

Shuts down the executor permanently. Called by Spring on context close via destroyMethod.

isRunning

public boolean isRunning()

Specified by:

isRunning in interface org.springframework.context.Lifecycle

isAutoStartup

public boolean isAutoStartup()

Specified by:

isAutoStartup in interface org.springframework.context.SmartLifecycle

getPhase

public int getPhase()

Specified by:

getPhase in interface org.springframework.context.Phased

Specified by:

getPhase in interface org.springframework.context.SmartLifecycle