All Implemented Interfaces:
```
public final class OutboxInstanceRegistry

                    
```
Registry service for managing outbox processor instances.
Handles instance registration, heartbeat management for horizontal scaling across multiple physical application instances.

Since:

0.2.0

Author:

Roland Beisel

Nested Class Summary

Nested Classes
Modifier and Type	Class	Description

Field Summary

Fields
Modifier and Type	Field	Description

Constructor Summary

Constructors
Constructor	Description
`OutboxInstanceRegistry(OutboxInstanceRepository instanceRepository, OutboxProperties properties, Clock clock)`

Enum Constant Summary

Enum Constants
Enum Constant	Description

Method Summary

Modifier and Type	Method	Description
`final String`	`getCurrentInstanceId()`	Gets the current instance ID.
`final List<OutboxInstance>`	`getActiveInstances()`	Gets all currently active instances.
`final Set<String>`	`getActiveInstanceIds()`	Gets all active instance IDs.
`final Boolean`	`isInstanceActive(String instanceId)`	Checks if a specific instance is active.
`final Long`	`getActiveInstanceCount()`	Gets the count of active instances.
`final Unit`	`registerInstance()`	Registers this instance on startup.
`final Unit`	`performHeartbeatAndCleanup()`	Sends heartbeat and cleans up stale instances.
`final Unit`	`gracefulShutdown()`	Performs graceful shutdown of this instance.
`final Unit`	`detectNewInstances()`	Detects new instances that joined.

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

- Constructor Detail
  - OutboxInstanceRegistry
```
OutboxInstanceRegistry(OutboxInstanceRepository instanceRepository, OutboxProperties properties, Clock clock)
```
    Parameters:
    
    instanceRepository - Repository for persisting instance data
    
    properties - Configuration properties for outbox functionality
    
    clock - Clock for time-based operations
- Method Detail
  - getCurrentInstanceId
```
 final String getCurrentInstanceId()
```
    Gets the current instance ID.
  - getActiveInstances
```
 final List<OutboxInstance> getActiveInstances()
```
    Gets all currently active instances.
  - getActiveInstanceIds
```
 final Set<String> getActiveInstanceIds()
```
    Gets all active instance IDs.
  - isInstanceActive
```
 final Boolean isInstanceActive(String instanceId)
```
    Checks if a specific instance is active.
  - getActiveInstanceCount
```
 final Long getActiveInstanceCount()
```
    Gets the count of active instances.
  - registerInstance
```
@PostConstruct() final Unit registerInstance()
```
    Registers this instance on startup.
  - performHeartbeatAndCleanup
```
@Scheduled(fixedRateString = "${outbox.instance.heartbeat-interval-seconds:5}000") final Unit performHeartbeatAndCleanup()
```
    Sends heartbeat and cleans up stale instances.
  - gracefulShutdown
```
 final Unit gracefulShutdown()
```
    Performs graceful shutdown of this instance.
  - detectNewInstances
```
@Scheduled(fixedRateString = "${outbox.instance.new-instance-detection-interval-seconds:10}000") final Unit detectNewInstances()
```
    Detects new instances that joined.

Class OutboxInstanceRegistry

Nested Class Summary

Field Summary

Constructor Summary

Enum Constant Summary

Method Summary

Methods inherited from class java.lang.Object

Constructor Detail

OutboxInstanceRegistry

Method Detail

getCurrentInstanceId

getActiveInstances

getActiveInstanceIds

isInstanceActive

getActiveInstanceCount

registerInstance

performHeartbeatAndCleanup

gracefulShutdown

detectNewInstances