Package com.linkedin.venice.helix

Class StoragePersonaRepository

java.lang.Object

com.linkedin.venice.helix.StoragePersonaRepository

public class StoragePersonaRepository
extends Object

Cached wrapper for the StoragePersonaAccessor class, which keeps a map of store names to personas that contain them, as well as caches Zookeeper personas. Class Invariants:

• Each method is thread-safe.
• The state of the repository (including the cache) will not be affected by object mutations until update methods from the repository are called.

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static class	StoragePersonaRepository.StoragePersonaStoreDataListener	Helper class which listens to changes from a ReadOnlyStoreRepository and updates the caches and ZK of the StoragePersonaRepository accordingly.

Constructor Summary

Constructors

Constructor	Description
StoragePersonaRepository(String clusterName, ReadOnlyStoreRepository repository, HelixAdapterSerializer compositeSerializer, org.apache.helix.zookeeper.impl.client.ZkClient zkClient)

Method Summary

Modifier and Type	Method	Description
void	addPersona(String name, long quotaNumber, Set<String> storesToEnforce, Set<String> owners)	Creates a new persona with the given parameters.
void	addStoresToPersona(String personaName, List<String> storeNames)	This operation assumes that stores which are added to the persona are not contained within any store, but does not do any validity checks.
void	deletePersona(String personaName)	Deletes the persona with the given name.
List<StoragePersona>	getAllPersonas()
StoragePersona	getPersona(String name)	Returns a persona with the given name within the cluster that the repository is located.
StoragePersona	getPersonaContainingStore(String storeName)
boolean	hasPersona(String name)
boolean	personaContainsStore(String personaName, String storeName)
final void	refresh()	Clears the cache and re-loads the cache data from Zookeeper.
void	updatePersona(String personaName, UpdateStoragePersonaQueryParams params)	Updates a persona with the given parameters.
void	validateAddUpdatedStore(StoragePersona persona, Optional<Store> store)
void	validatePersona(StoragePersona persona)
void	validatePersona(String personaName, long quota, Set<String> storesToEnforce, Set<String> owners)
void	validatePersonaUpdate(String personaName, UpdateStoragePersonaQueryParams params)

Methods inherited from class java.lang.Object

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

Constructor Details

StoragePersonaRepository

public StoragePersonaRepository(String clusterName,
 ReadOnlyStoreRepository repository,
 HelixAdapterSerializer compositeSerializer,
 org.apache.helix.zookeeper.impl.client.ZkClient zkClient)

Method Details

getPersona

public StoragePersona getPersona(String name)

Returns a persona with the given name within the cluster that the repository is located. In the case that no persona with this name exists, this method returns null.

getAllPersonas

public List<StoragePersona> getAllPersonas()

hasPersona

public boolean hasPersona(String name)

refresh

public final void refresh()

Clears the cache and re-loads the cache data from Zookeeper.

addPersona

public void addPersona(String name,
 long quotaNumber,
 Set<String> storesToEnforce,
 Set<String> owners)

Creates a new persona with the given parameters. This method will throw an error if:

• A persona with the given name already exists in the cluster.
• One of the stores in storesToEnforce does not exist in the cluster.
• The total quota of the stores exceeds the given persona budget.

updatePersona

public void updatePersona(String personaName,
 UpdateStoragePersonaQueryParams params)

Updates a persona with the given parameters. This method will throw an error if:

• There is no persona with this name in the cluster.
• One of the stores in storesToEnforce does not exist in the cluster.
• The total quota of the stores exceeds the given persona budget.

On failure, the given persona, if it exists, will remain unchanged.

deletePersona

public void deletePersona(String personaName)

Deletes the persona with the given name. If no persona is found, this method does nothing.

getPersonaContainingStore

public StoragePersona getPersonaContainingStore(String storeName)

validatePersona

public void validatePersona(String personaName,
 long quota,
 Set<String> storesToEnforce,
 Set<String> owners)

validatePersonaUpdate

public void validatePersonaUpdate(String personaName,
 UpdateStoragePersonaQueryParams params)

validatePersona

public void validatePersona(StoragePersona persona)

validateAddUpdatedStore

public void validateAddUpdatedStore(StoragePersona persona,
 Optional<Store> store)

addStoresToPersona

public void addStoresToPersona(String personaName,
 List<String> storeNames)

This operation assumes that stores which are added to the persona are not contained within any store, but does not do any validity checks.

personaContainsStore

public boolean personaContainsStore(String personaName,
 String storeName)