Package org.elasticsearch.cluster.metadata

Class MetaDataCreateIndexService

java.lang.Object

org.elasticsearch.cluster.metadata.MetaDataCreateIndexService

public class MetaDataCreateIndexService
extends java.lang.Object

Service responsible for submitting create index requests

Field Summary

Fields

Modifier and Type	Field	Description
static int	MAX_INDEX_NAME_BYTES

Constructor Summary

Constructors

Constructor	Description
MetaDataCreateIndexService(Settings settings, ClusterService clusterService, IndicesService indicesService, AllocationService allocationService, AliasValidator aliasValidator, Environment env, IndexScopedSettings indexScopedSettings, ThreadPool threadPool, NamedXContentRegistry xContentRegistry, boolean forbidPrivateIndexSettings)

Method Summary

Modifier and Type	Method	Description
ClusterState	applyCreateIndexRequest(ClusterState currentState, CreateIndexClusterStateUpdateRequest request)	Handles the cluster state transition to a version that reflects the CreateIndexClusterStateUpdateRequest.
static int	calculateNumRoutingShards(int numShards, Version indexVersionCreated)	Returns a default number of routing shards based on the number of shards of the index.
static void	checkShardLimit(Settings settings, ClusterState clusterState)	Checks whether an index can be created without going over the cluster shard limit.
void	createIndex(CreateIndexClusterStateUpdateRequest request, ActionListener<CreateIndexClusterStateUpdateResponse> listener)	Creates an index in the cluster state and waits for the specified number of shard copies to become active (as specified in CreateIndexClusterStateUpdateRequest.waitForActiveShards()) before sending the response on the listener.
static void	validateIndexName(java.lang.String index, ClusterState state)	Validate the name for an index against some static rules and a cluster state.
static void	validateIndexOrAliasName(java.lang.String index, java.util.function.BiFunction<java.lang.String,java.lang.String,? extends java.lang.RuntimeException> exceptionCtor)	Validate the name for an index or alias against some static rules.
void	validateIndexSettings(java.lang.String indexName, Settings settings, boolean forbidPrivateIndexSettings)

Methods inherited from class java.lang.Object

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

Field Details

MAX_INDEX_NAME_BYTES

public static final int MAX_INDEX_NAME_BYTES

See Also:

Constant Field Values

Constructor Details

MetaDataCreateIndexService

public MetaDataCreateIndexService(Settings settings, ClusterService clusterService, IndicesService indicesService, AllocationService allocationService, AliasValidator aliasValidator, Environment env, IndexScopedSettings indexScopedSettings, ThreadPool threadPool, NamedXContentRegistry xContentRegistry, boolean forbidPrivateIndexSettings)

Method Details

validateIndexName

public static void validateIndexName(java.lang.String index, ClusterState state)

Validate the name for an index against some static rules and a cluster state.

validateIndexOrAliasName

public static void validateIndexOrAliasName(java.lang.String index, java.util.function.BiFunction<java.lang.String,java.lang.String,? extends java.lang.RuntimeException> exceptionCtor)

Validate the name for an index or alias against some static rules.

createIndex

public void createIndex(CreateIndexClusterStateUpdateRequest request, ActionListener<CreateIndexClusterStateUpdateResponse> listener)

Creates an index in the cluster state and waits for the specified number of shard copies to become active (as specified in CreateIndexClusterStateUpdateRequest.waitForActiveShards()) before sending the response on the listener. If the index creation was successfully applied on the cluster state, then ClusterStateUpdateResponse.isAcknowledged() will return true, otherwise it will return false and no waiting will occur for started shards (CreateIndexClusterStateUpdateResponse.isShardsAcknowledged() will also be false). If the index creation in the cluster state was successful and the requisite shard copies were started before the timeout, then CreateIndexClusterStateUpdateResponse.isShardsAcknowledged() will return true, otherwise if the operation timed out, then it will return false.

Parameters:

request - the index creation cluster state update request

listener - the listener on which to send the index creation cluster state update response

applyCreateIndexRequest

public ClusterState applyCreateIndexRequest(ClusterState currentState, CreateIndexClusterStateUpdateRequest request) throws java.lang.Exception

Handles the cluster state transition to a version that reflects the CreateIndexClusterStateUpdateRequest. All the requested changes are firstly validated before mutating the ClusterState.

Throws:

java.lang.Exception

validateIndexSettings

public void validateIndexSettings(java.lang.String indexName, Settings settings, boolean forbidPrivateIndexSettings) throws IndexCreationException

Throws:

IndexCreationException

checkShardLimit

public static void checkShardLimit(Settings settings, ClusterState clusterState)

Checks whether an index can be created without going over the cluster shard limit.

Parameters:

settings - the settings of the index to be created

clusterState - the current cluster state

Throws:

ValidationException - if creating this index would put the cluster over the cluster shard limit

calculateNumRoutingShards

public static int calculateNumRoutingShards(int numShards, Version indexVersionCreated)

Returns a default number of routing shards based on the number of shards of the index. The default number of routing shards will allow any index to be split at least once and at most 10 times by a factor of two. The closer the number or shards gets to 1024 the less default split operations are supported