org.apache.storm.blobstore

Class LocalModeClientBlobStore

java.lang.Object

org.apache.storm.blobstore.ClientBlobStore

org.apache.storm.blobstore.LocalModeClientBlobStore

All Implemented Interfaces:

AutoCloseable, Shutdownable

public class LocalModeClientBlobStore
extends ClientBlobStore

A Client blob store for LocalMode.

Nested Class Summary

Nested classes/interfaces inherited from class org.apache.storm.blobstore.ClientBlobStore

ClientBlobStore.WithBlobstore

Field Summary

Fields inherited from class org.apache.storm.blobstore.ClientBlobStore

conf

Constructor Summary

Constructors

Constructor and Description
LocalModeClientBlobStore(BlobStore wrapped)

Method Summary

Modifier and Type	Method and Description
void	close()
protected AtomicOutputStream	createBlobToExtend(String key, SettableBlobMeta meta) Client facing API to create a blob.
void	createStateInZookeeper(String key) Creates state inside a zookeeper.
void	deleteBlob(String key) Client facing API to delete a blob.
InputStreamWithMeta	getBlob(String key) Client facing API to read a blob.
ReadableBlobMeta	getBlobMeta(String key) Client facing API to read the metadata information.
int	getBlobReplication(String key) Client facing API to read the replication of a blob.
boolean	isRemoteBlobExists(String blobKey) Decide if the blob is deleted from cluster.
Iterator<String>	listKeys()
void	prepare(Map<String,Object> conf) Sets up the client API by parsing the configs.
protected void	setBlobMetaToExtend(String key, SettableBlobMeta meta) Client facing API to set the metadata for a blob.
boolean	setClient(Map<String,Object> conf, NimbusClient client) Client facing API to set a nimbus client.
void	shutdown()
AtomicOutputStream	updateBlob(String key) Client facing API to update a blob.
int	updateBlobReplication(String key, int replication) Client facing API to update the replication of a blob.

Methods inherited from class org.apache.storm.blobstore.ClientBlobStore

createBlob, setBlobMeta, withConfiguredClient

Methods inherited from class java.lang.Object

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

Constructor Detail

LocalModeClientBlobStore

public LocalModeClientBlobStore(BlobStore wrapped)

Method Detail

shutdown

public void shutdown()

prepare

public void prepare(Map<String,Object> conf)

Description copied from class: ClientBlobStore

Sets up the client API by parsing the configs.

Specified by:

prepare in class ClientBlobStore

Parameters:

conf - The storm conf containing the config details.

createBlobToExtend

protected AtomicOutputStream createBlobToExtend(String key,
                                                SettableBlobMeta meta)
                                         throws AuthorizationException,
                                                KeyAlreadyExistsException

Description copied from class: ClientBlobStore

Client facing API to create a blob.

Specified by:

createBlobToExtend in class ClientBlobStore

Parameters:

key - blob key name.

meta - contains ACL information.

Returns:

AtomicOutputStream returns an output stream into which data can be written.

Throws:

AuthorizationException

KeyAlreadyExistsException

updateBlob

public AtomicOutputStream updateBlob(String key)
                              throws AuthorizationException,
                                     KeyNotFoundException

Description copied from class: ClientBlobStore

Client facing API to update a blob.

Specified by:

updateBlob in class ClientBlobStore

Parameters:

key - blob key name.

Returns:

AtomicOutputStream returns an output stream into which data can be written.

Throws:

AuthorizationException

KeyNotFoundException

getBlobMeta

public ReadableBlobMeta getBlobMeta(String key)
                             throws AuthorizationException,
                                    KeyNotFoundException

Description copied from class: ClientBlobStore

Client facing API to read the metadata information.

Specified by:

getBlobMeta in class ClientBlobStore

Parameters:

key - blob key name.

Returns:

AtomicOutputStream returns an output stream into which data can be written.

Throws:

AuthorizationException

KeyNotFoundException

isRemoteBlobExists

public boolean isRemoteBlobExists(String blobKey)
                           throws AuthorizationException

Description copied from class: ClientBlobStore

Decide if the blob is deleted from cluster.

Specified by:

isRemoteBlobExists in class ClientBlobStore

Parameters:

blobKey - blob key

Throws:

AuthorizationException

setBlobMetaToExtend

protected void setBlobMetaToExtend(String key,
                                   SettableBlobMeta meta)
                            throws AuthorizationException,
                                   KeyNotFoundException

Description copied from class: ClientBlobStore

Client facing API to set the metadata for a blob.

Specified by:

setBlobMetaToExtend in class ClientBlobStore

Parameters:

key - blob key name.

meta - contains ACL information.

Throws:

AuthorizationException

KeyNotFoundException

deleteBlob

public void deleteBlob(String key)
                throws AuthorizationException,
                       KeyNotFoundException

Description copied from class: ClientBlobStore

Client facing API to delete a blob.

Specified by:

deleteBlob in class ClientBlobStore

Parameters:

key - blob key name.

Throws:

AuthorizationException

KeyNotFoundException

getBlob

public InputStreamWithMeta getBlob(String key)
                            throws AuthorizationException,
                                   KeyNotFoundException

Description copied from class: ClientBlobStore

Client facing API to read a blob.

Specified by:

getBlob in class ClientBlobStore

Parameters:

key - blob key name.

Returns:

an InputStream to read the metadata for a blob.

Throws:

AuthorizationException

KeyNotFoundException

listKeys

public Iterator<String> listKeys()

Specified by:

listKeys in class ClientBlobStore

Returns:

Iterator for a list of keys currently present in the blob store.

getBlobReplication

public int getBlobReplication(String key)
                       throws AuthorizationException,
                              KeyNotFoundException

Description copied from class: ClientBlobStore

Client facing API to read the replication of a blob.

Specified by:

getBlobReplication in class ClientBlobStore

Parameters:

key - blob key name.

Returns:

int indicates the replication factor of a blob.

Throws:

AuthorizationException

KeyNotFoundException

updateBlobReplication

public int updateBlobReplication(String key,
                                 int replication)
                          throws AuthorizationException,
                                 KeyNotFoundException

Description copied from class: ClientBlobStore

Client facing API to update the replication of a blob.

Specified by:

updateBlobReplication in class ClientBlobStore

Parameters:

key - blob key name.

replication - int indicates the replication factor a blob has to be set.

Returns:

int indicates the replication factor of a blob.

Throws:

AuthorizationException

KeyNotFoundException

setClient

public boolean setClient(Map<String,Object> conf,
                         NimbusClient client)

Description copied from class: ClientBlobStore

Client facing API to set a nimbus client.

Specified by:

setClient in class ClientBlobStore

Parameters:

conf - storm conf

client - NimbusClient

Returns:

indicates where the client connection has been setup.

createStateInZookeeper

public void createStateInZookeeper(String key)

Description copied from class: ClientBlobStore

Creates state inside a zookeeper. Required for blobstore to write to zookeeper when Nimbus HA is turned on in order to maintain state consistency

Specified by:

createStateInZookeeper in class ClientBlobStore

close

public void close()

Specified by:

close in interface AutoCloseable

Specified by:

close in class ClientBlobStore