HelixInstanceConfigRepository (venice API)

java.lang.Object
- com.linkedin.venice.helix.HelixInstanceConfigRepository

All Implemented Interfaces:

VeniceResource, org.apache.helix.api.listeners.InstanceConfigChangeListener
```
public class HelixInstanceConfigRepository
extends java.lang.Object
implements VeniceResource, org.apache.helix.api.listeners.InstanceConfigChangeListener
```
This repository is used to store the instance config per instance. So far it only stores group/zone info, and we could add more if necessary in the future.

Field Summary

Fields
Modifier and Type	Field	Description
`static int`	`DEFAULT_INSTANCE_GROUP_ID`
`static java.lang.String`	`GROUP_FIELD_NAME_IN_DOMAIN`
`static java.lang.String`	`ZONE_FIELD_NAME_IN_DOMAIN`

Constructor Summary

Constructors
Constructor Description

HelixInstanceConfigRepository(SafeHelixManager manager, boolean useGroupFieldInDomain)

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`void`	`clear()`
`int`	`getGroupCount()`
`int`	`getInstanceGroupId(java.lang.String instanceId)`
`java.util.Map<java.lang.String,java.lang.Integer>`	`getInstanceGroupIdMapping()`
`void`	`onInstanceConfigChange(java.util.List<org.apache.helix.model.InstanceConfig> instanceConfigs, org.apache.helix.NotificationContext context)`	This function will assign a unique group id per group.
`void`	`refresh()`

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

Field Detail
- DEFAULT_INSTANCE_GROUP_ID
```
public static final int DEFAULT_INSTANCE_GROUP_ID
```
  See Also:
  
  Constant Field Values
- GROUP_FIELD_NAME_IN_DOMAIN
```
public static final java.lang.String GROUP_FIELD_NAME_IN_DOMAIN
```
  See Also:
  
  Constant Field Values
- ZONE_FIELD_NAME_IN_DOMAIN
```
public static final java.lang.String ZONE_FIELD_NAME_IN_DOMAIN
```
  See Also:
  
  Constant Field Values

Constructor Detail

HelixInstanceConfigRepository

public HelixInstanceConfigRepository(SafeHelixManager manager,
                                     boolean useGroupFieldInDomain)

Method Detail
- refresh
```
public void refresh()
```
  Specified by:
  
  refresh in interface VeniceResource
- clear
```
public void clear()
```
  Specified by:
  
  clear in interface VeniceResource
- getInstanceGroupId
```
public int getInstanceGroupId(java.lang.String instanceId)
```
- getInstanceGroupIdMapping
```
public java.util.Map<java.lang.String,java.lang.Integer> getInstanceGroupIdMapping()
```
- getGroupCount
```
public int getGroupCount()
```
- onInstanceConfigChange
```
public void onInstanceConfigChange(java.util.List<org.apache.helix.model.InstanceConfig> instanceConfigs,
                                   org.apache.helix.NotificationContext context)
```
  This function will assign a unique group id per group. If there is no group defined for some instances, this function will use empty string as the default.
  
  Specified by:
  
  onInstanceConfigChange in interface org.apache.helix.api.listeners.InstanceConfigChangeListener