Package org.apache.solr.cloud

Enum DistributedClusterStateUpdater.MutatingCommand

java.lang.Object

java.lang.Enum<DistributedClusterStateUpdater.MutatingCommand>

org.apache.solr.cloud.DistributedClusterStateUpdater.MutatingCommand

All Implemented Interfaces:

Serializable, Comparable<DistributedClusterStateUpdater.MutatingCommand>

Enclosing class:

DistributedClusterStateUpdater

public static enum DistributedClusterStateUpdater.MutatingCommand
extends Enum<DistributedClusterStateUpdater.MutatingCommand>

Naming of enum instances are the mutator object name (e.g. Cluster for ClusterStateMutator or Collection for CollectionMutator) followed by the method name of the mutator. For example SliceAddReplica represents SliceMutator.addReplica(org.apache.solr.common.cloud.ClusterState, org.apache.solr.common.cloud.ZkNodeProps).

Even though the various mutator classes do not implement any common interface, luckily their constructors and methods take the same set of parameters so all can be called from the enum method buildWriteCommand(SolrCloudManager, ClusterState, ZkNodeProps).

Given that OverseerAction.DOWNNODE is different (it returns a list of write commands and impacts more than one collection), it is handled specifically in DistributedClusterStateUpdater.CollectionNodeDownChangeCalculator.executeNodeDownStateUpdate(java.lang.String, org.apache.solr.common.cloud.ZkStateReader).

Enum Constant Summary

Enum Constants

Enum Constant	Description
BalanceShardsUnique
ClusterCreateCollection
ClusterDeleteCollection
CollectionCreateShard
CollectionDeleteShard
CollectionModifyCollection
ReplicaAddReplicaProperty
ReplicaDeleteReplicaProperty
ReplicaSetState
SliceAddReplica
SliceAddRoutingRule
SliceRemoveReplica
SliceRemoveRoutingRule
SliceSetShardLeader
SliceUpdateShardState

Method Summary

Modifier and Type	Method	Description
abstract ZkWriteCommand	buildWriteCommand(SolrCloudManager scm, ClusterState cs, ZkNodeProps message)	mutating commands that return a single ZkWriteCommand override this method
String	getCollectionName(ZkNodeProps message)
static DistributedClusterStateUpdater.MutatingCommand	getCommandFor(CollectionParams.CollectionAction collectionAction)
boolean	isCollectionCreation()	Given only one command creates a collection ClusterCreateCollection, the default implementation is provided here.
static DistributedClusterStateUpdater.MutatingCommand	valueOf(String name)	Returns the enum constant of this type with the specified name.
static DistributedClusterStateUpdater.MutatingCommand[]	values()	Returns an array containing the constants of this enum type, in the order they are declared.

Methods inherited from class java.lang.Enum

clone, compareTo, equals, finalize, getDeclaringClass, hashCode, name, ordinal, toString, valueOf

Methods inherited from class java.lang.Object

getClass, notify, notifyAll, wait, wait, wait

Enum Constant Detail

BalanceShardsUnique

public static final DistributedClusterStateUpdater.MutatingCommand BalanceShardsUnique

ClusterCreateCollection

public static final DistributedClusterStateUpdater.MutatingCommand ClusterCreateCollection

ClusterDeleteCollection

public static final DistributedClusterStateUpdater.MutatingCommand ClusterDeleteCollection

CollectionDeleteShard

public static final DistributedClusterStateUpdater.MutatingCommand CollectionDeleteShard

CollectionModifyCollection

public static final DistributedClusterStateUpdater.MutatingCommand CollectionModifyCollection

CollectionCreateShard

public static final DistributedClusterStateUpdater.MutatingCommand CollectionCreateShard

ReplicaAddReplicaProperty

public static final DistributedClusterStateUpdater.MutatingCommand ReplicaAddReplicaProperty

ReplicaDeleteReplicaProperty

public static final DistributedClusterStateUpdater.MutatingCommand ReplicaDeleteReplicaProperty

ReplicaSetState

public static final DistributedClusterStateUpdater.MutatingCommand ReplicaSetState

SliceAddReplica

public static final DistributedClusterStateUpdater.MutatingCommand SliceAddReplica

SliceAddRoutingRule

public static final DistributedClusterStateUpdater.MutatingCommand SliceAddRoutingRule

SliceRemoveReplica

public static final DistributedClusterStateUpdater.MutatingCommand SliceRemoveReplica

SliceRemoveRoutingRule

public static final DistributedClusterStateUpdater.MutatingCommand SliceRemoveRoutingRule

SliceSetShardLeader

public static final DistributedClusterStateUpdater.MutatingCommand SliceSetShardLeader

SliceUpdateShardState

public static final DistributedClusterStateUpdater.MutatingCommand SliceUpdateShardState

Method Detail

values

public static DistributedClusterStateUpdater.MutatingCommand[] values()

Returns an array containing the constants of this enum type, in the order they are declared. This method may be used to iterate over the constants as follows:

for (DistributedClusterStateUpdater.MutatingCommand c : DistributedClusterStateUpdater.MutatingCommand.values())
    System.out.println(c);

Returns:

an array containing the constants of this enum type, in the order they are declared

valueOf

public static DistributedClusterStateUpdater.MutatingCommand valueOf(String name)

Returns the enum constant of this type with the specified name. The string must match exactly an identifier used to declare an enum constant in this type. (Extraneous whitespace characters are not permitted.)

Parameters:

name - the name of the enum constant to be returned.

Returns:

the enum constant with the specified name

Throws:

IllegalArgumentException - if this enum type has no constant with the specified name

NullPointerException - if the argument is null

buildWriteCommand

public abstract ZkWriteCommand buildWriteCommand(SolrCloudManager scm,
                                                 ClusterState cs,
                                                 ZkNodeProps message)

mutating commands that return a single ZkWriteCommand override this method

getCollectionName

public String getCollectionName(ZkNodeProps message)

getCommandFor

public static DistributedClusterStateUpdater.MutatingCommand getCommandFor(CollectionParams.CollectionAction collectionAction)

Returns:

the DistributedClusterStateUpdater.MutatingCommand corresponding to the passed CollectionParams.CollectionAction or null if no cluster state update command is defined for that action (given that CollectionParams.CollectionAction are used for the Collection API and only some are used for the cluster state updates, this is expected).

isCollectionCreation

public boolean isCollectionCreation()

Given only one command creates a collection ClusterCreateCollection, the default implementation is provided here.