Package org.apache.flink.runtime.blob

Class BlobUtils

java.lang.Object

org.apache.flink.runtime.blob.BlobUtils

public class BlobUtils
extends Object

Utility class to work with blob data.

Method Summary

Modifier and Type	Method	Description
static byte[]	calculateMessageDigest(File file)
static BlobCacheService	createBlobCacheService(org.apache.flink.configuration.Configuration configuration, org.apache.flink.util.Reference<File> fallbackStorageDirectory, BlobView blobView, InetSocketAddress serverAddress)	Creates the BlobCacheService from the given configuration, fallback storage directory, blob view and blob server address.
static BlobServer	createBlobServer(org.apache.flink.configuration.Configuration configuration, org.apache.flink.util.Reference<File> fallbackStorageDirectory, BlobStore blobStore)	Creates the BlobServer from the given configuration, fallback storage directory and blob store.
static BlobStoreService	createBlobStoreFromConfig(org.apache.flink.configuration.Configuration config)	Creates a BlobStore based on the parameters set in the configuration.

Methods inherited from class java.lang.Object

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

Method Details

createBlobStoreFromConfig

public static BlobStoreService createBlobStoreFromConfig(org.apache.flink.configuration.Configuration config)
                                                  throws IOException

Creates a BlobStore based on the parameters set in the configuration.

Parameters:

config - configuration to use

Returns:

a (distributed) blob store for high availability

Throws:

IOException - thrown if the (distributed) file storage cannot be created

createBlobServer

public static BlobServer createBlobServer(org.apache.flink.configuration.Configuration configuration,
 org.apache.flink.util.Reference<File> fallbackStorageDirectory,
 BlobStore blobStore)
                                   throws IOException

Creates the BlobServer from the given configuration, fallback storage directory and blob store.

Parameters:

configuration - for the BlobServer

fallbackStorageDirectory - fallback storage directory that is used if no other directory has been explicitly configured

blobStore - blob store to use for this blob server

Returns:

new blob server instance

Throws:

IOException - if we could not create the blob storage directory

createBlobCacheService

public static BlobCacheService createBlobCacheService(org.apache.flink.configuration.Configuration configuration,
 org.apache.flink.util.Reference<File> fallbackStorageDirectory,
 BlobView blobView,
 @Nullable
 InetSocketAddress serverAddress)
                                               throws IOException

Creates the BlobCacheService from the given configuration, fallback storage directory, blob view and blob server address.

Parameters:

configuration - for the BlobCacheService

fallbackStorageDirectory - fallback storage directory

blobView - blob view

serverAddress - blob server address

Returns:

new blob cache service instance

Throws:

IOException - if we could not create the blob storage directory

calculateMessageDigest

public static byte[] calculateMessageDigest(File file)
                                     throws IOException

Throws:

IOException