Package ch.tocco.nice2.persist.s3storage.impl

Class S3ProxyAccessProvider

java.lang.Object

ch.tocco.nice2.persist.s3storage.impl.S3ProxyAccessProvider

All Implemented Interfaces:

BinaryAccessProvider

@Component
public class S3ProxyAccessProvider
extends Object
implements BinaryAccessProvider

Proxy implementation of BinaryAccessProvider which forwards all requests to different S3AccessProvider. This is used during development: Instead of copying an entire bucket, the existing bucket is available for read requests only. All write operations will be executed on the 'overlay' bucket.

Field Summary

Fields

Modifier and Type	Field	Description
protected S3AccessProvider	mainProvider
protected @Nullable S3AccessProvider	overlayProvider

Constructor Summary

Constructors

Constructor	Description
S3ProxyAccessProvider(org.slf4j.Logger logger, BinaryHashingService binaryHashingService, MainS3Configuration mainConfiguration, OverlayS3Configuration overlayConfiguration)

Method Summary

Modifier and Type	Method	Description
Set<com.google.common.hash.HashCode>	findUnreferencedBinaries(Connection connection, @Nullable Integer limit)
Binary	loadBinary(com.google.common.hash.HashCode hashCode, long size, String mimeType, String fileExtension)	create a Binary instance without executing an sql query, this method should be used if the data from _nice_binary has already been loaded.
Binary	loadBinary(com.google.common.hash.HashCode hashCode, Connection connection)	load an object from the store
boolean	removeBinary(com.google.common.hash.HashCode hashCode, Connection connection)	remove a binary from storage
com.google.common.hash.HashCode	storeBinary(Binary binary, Connection connection)	save an object into the store

Methods inherited from class java.lang.Object

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

Field Details

mainProvider

protected S3AccessProvider mainProvider

overlayProvider

@Nullable
protected @Nullable S3AccessProvider overlayProvider

Constructor Details

S3ProxyAccessProvider

public S3ProxyAccessProvider(org.slf4j.Logger logger,
 BinaryHashingService binaryHashingService,
 MainS3Configuration mainConfiguration,
 OverlayS3Configuration overlayConfiguration)

Method Details

loadBinary

public Binary loadBinary(com.google.common.hash.HashCode hashCode,
 Connection connection)

Description copied from interface: BinaryAccessProvider

load an object from the store

Specified by:

loadBinary in interface BinaryAccessProvider

Parameters:

hashCode - hash/id of the file to load

connection - Connection to use for database operations

Returns:

the object

loadBinary

public Binary loadBinary(com.google.common.hash.HashCode hashCode,
 long size,
 String mimeType,
 String fileExtension)

Description copied from interface: BinaryAccessProvider

create a Binary instance without executing an sql query, this method should be used if the data from _nice_binary has already been loaded.

Specified by:

loadBinary in interface BinaryAccessProvider

storeBinary

public com.google.common.hash.HashCode storeBinary(Binary binary,
 Connection connection)

Description copied from interface: BinaryAccessProvider

save an object into the store

Specified by:

storeBinary in interface BinaryAccessProvider

Parameters:

binary - the object to save

connection - Connection to use for database operations

Returns:

the hash/id of the saved object

removeBinary

public boolean removeBinary(com.google.common.hash.HashCode hashCode,
 Connection connection)

Description copied from interface: BinaryAccessProvider

remove a binary from storage

Specified by:

removeBinary in interface BinaryAccessProvider

Parameters:

hashCode - the hash of the object to remove

connection - Connection to use for database operations

findUnreferencedBinaries

public Set<com.google.common.hash.HashCode> findUnreferencedBinaries(Connection connection,
 @Nullable
 @Nullable Integer limit)

Specified by:

findUnreferencedBinaries in interface BinaryAccessProvider

Returns:

all binary hashes that are no longer referenced and may be removed