eu.europeana.cloud.service.mcs.persistent.swift

Class SwiftContentDAO

java.lang.Object

eu.europeana.cloud.service.mcs.persistent.swift.SwiftContentDAO

All Implemented Interfaces:

ContentDAO

@Repository
public class SwiftContentDAO
extends Object
implements ContentDAO

Provides DAO operations for Openstack Swift.

Constructor Summary

Constructors

Constructor and Description
SwiftContentDAO()

Method Summary

Methods

Modifier and Type	Method and Description
void	copyContent(String sourceObjectId, String trgObjectId) Copies content of one storage object to another.
void	deleteContent(String fileName) Deletes storage object identified by fileName.
void	getContent(String fileName, long start, long end, OutputStream os) Retrieves content of file from storage.
PutResult	putContent(String fileName, InputStream data) Puts given content to storage under given fileName.

Methods inherited from class java.lang.Object

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

Constructor Detail

SwiftContentDAO

public SwiftContentDAO()

Method Detail

putContent

public PutResult putContent(String fileName,
                   InputStream data)
                     throws IOException,
                            org.jclouds.blobstore.ContainerNotFoundException

Puts given content to storage under given fileName. Counts and returns content length and md5 checksum from given data.

Specified by:

putContent in interface ContentDAO

Parameters:

fileName - name of the file

data - content of file to be saved

Returns:

md5 and content length

Throws:

IOException - if an I/O error occurs

org.jclouds.blobstore.ContainerNotFoundException

getContent

public void getContent(String fileName,
              long start,
              long end,
              OutputStream os)
                throws IOException,
                       eu.europeana.cloud.service.mcs.exception.FileNotExistsException,
                       org.jclouds.blobstore.ContainerNotFoundException

Retrieves content of file from storage. Can retrieve range of bytes of the file.

Specified by:

getContent in interface ContentDAO

Parameters:

fileName - name of the file to retrieve

start - first offset included in the response. If equal to -1, ignored.

end - last offset included in the response (inclusive). If equal to -1, ignored.

os - outputstream the content is written to

Throws:

IOException - if an I/O error occurs

eu.europeana.cloud.service.mcs.exception.FileNotExistsException - if object does not exist in the storage

org.jclouds.blobstore.ContainerNotFoundException

copyContent

public void copyContent(String sourceObjectId,
               String trgObjectId)
                 throws eu.europeana.cloud.service.mcs.exception.FileNotExistsException,
                        eu.europeana.cloud.service.mcs.exception.FileAlreadyExistsException

Copies content of one storage object to another.

Specified by:

copyContent in interface ContentDAO

Parameters:

sourceObjectId - name of the source storage object

trgObjectId - name of the target storage object

Throws:

eu.europeana.cloud.service.mcs.exception.FileNotExistsException - if source object does not exist in the storage

eu.europeana.cloud.service.mcs.exception.FileAlreadyExistsException

deleteContent

public void deleteContent(String fileName)
                   throws eu.europeana.cloud.service.mcs.exception.FileNotExistsException

Deletes storage object identified by fileName.

Specified by:

deleteContent in interface ContentDAO

Parameters:

fileName - name of the object to be deleted

Throws:

eu.europeana.cloud.service.mcs.exception.FileNotExistsException - if object does not exist in the storage