org.duracloud.snapshot.service.impl

Class SpaceItemWriter

java.lang.Object

org.duracloud.snapshot.service.impl.SpaceItemWriter

All Implemented Interfaces:

org.springframework.batch.core.ItemWriteListener<org.duracloud.common.model.ContentItem>, org.springframework.batch.core.StepExecutionListener, org.springframework.batch.core.StepListener, org.springframework.batch.item.ItemWriter<org.duracloud.common.model.ContentItem>

public class SpaceItemWriter
extends Object
implements org.springframework.batch.item.ItemWriter<org.duracloud.common.model.ContentItem>, org.springframework.batch.core.StepExecutionListener, org.springframework.batch.core.ItemWriteListener<org.duracloud.common.model.ContentItem>

This class is responsible for reading the contents and properties of a duracloud content item, writing it to disk, appending its md5 and sha256 to separate text files, appending the item properties to a json file, and writing the item to the snapshot content repo.

Author:

Erik Paulsson Date: 2/7/14

Constructor Summary

Constructors

Constructor and Description
SpaceItemWriter(Snapshot snapshot, org.duracloud.retrieval.source.RetrievalSource retrievalSource, File contentDir, org.duracloud.retrieval.mgmt.OutputWriter outputWriter, BufferedWriter propsWriter, BufferedWriter md5Writer, BufferedWriter sha256Writer, SnapshotManager snapshotManager)

Method Summary

Modifier and Type	Method and Description
org.springframework.batch.core.ExitStatus	afterStep(org.springframework.batch.core.StepExecution stepExecution)
void	afterWrite(List<? extends org.duracloud.common.model.ContentItem> items)
void	beforeStep(org.springframework.batch.core.StepExecution stepExecution)
void	beforeWrite(List<? extends org.duracloud.common.model.ContentItem> items)
void	onWriteError(Exception e, List<? extends org.duracloud.common.model.ContentItem> items)
protected void	retrieveFile(org.duracloud.common.model.ContentItem contentItem, File directory)
protected void	retrieveFile(org.duracloud.common.model.ContentItem contentItem, File directory, boolean writeChecksums, boolean lastItem)
protected void	retrieveSnapshotProperties()
void	write(List<? extends org.duracloud.common.model.ContentItem> items)
protected void	writeContentProperties(org.duracloud.common.model.ContentItem contentItem, Map<String,String> props, boolean lastItem)
protected void	writeMD5Checksum(org.duracloud.common.model.ContentItem contentItem, String md5Checksum)
protected void	writeSHA256Checksum(org.duracloud.common.model.ContentItem contentItem, File localFile)

Methods inherited from class java.lang.Object

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

Constructor Detail

SpaceItemWriter

public SpaceItemWriter(Snapshot snapshot,
                       org.duracloud.retrieval.source.RetrievalSource retrievalSource,
                       File contentDir,
                       org.duracloud.retrieval.mgmt.OutputWriter outputWriter,
                       BufferedWriter propsWriter,
                       BufferedWriter md5Writer,
                       BufferedWriter sha256Writer,
                       SnapshotManager snapshotManager)

Method Detail

write

public void write(List<? extends org.duracloud.common.model.ContentItem> items)
           throws IOException

Specified by:

write in interface org.springframework.batch.item.ItemWriter<org.duracloud.common.model.ContentItem>

Throws:

IOException

retrieveFile

protected void retrieveFile(org.duracloud.common.model.ContentItem contentItem,
                            File directory)
                     throws IOException

Throws:

IOException

retrieveFile

protected void retrieveFile(org.duracloud.common.model.ContentItem contentItem,
                            File directory,
                            boolean writeChecksums,
                            boolean lastItem)
                     throws IOException

Throws:

IOException

writeMD5Checksum

protected void writeMD5Checksum(org.duracloud.common.model.ContentItem contentItem,
                                String md5Checksum)
                         throws IOException

Throws:

IOException

writeSHA256Checksum

protected void writeSHA256Checksum(org.duracloud.common.model.ContentItem contentItem,
                                   File localFile)
                            throws IOException

Throws:

IOException

writeContentProperties

protected void writeContentProperties(org.duracloud.common.model.ContentItem contentItem,
                                      Map<String,String> props,
                                      boolean lastItem)
                               throws IOException

Throws:

IOException

retrieveSnapshotProperties

protected void retrieveSnapshotProperties()

afterStep

public org.springframework.batch.core.ExitStatus afterStep(org.springframework.batch.core.StepExecution stepExecution)

Specified by:

afterStep in interface org.springframework.batch.core.StepExecutionListener

beforeStep

public void beforeStep(org.springframework.batch.core.StepExecution stepExecution)

Specified by:

beforeStep in interface org.springframework.batch.core.StepExecutionListener

onWriteError

public void onWriteError(Exception e,
                         List<? extends org.duracloud.common.model.ContentItem> items)

Specified by:

onWriteError in interface org.springframework.batch.core.ItemWriteListener<org.duracloud.common.model.ContentItem>

beforeWrite

public void beforeWrite(List<? extends org.duracloud.common.model.ContentItem> items)

Specified by:

beforeWrite in interface org.springframework.batch.core.ItemWriteListener<org.duracloud.common.model.ContentItem>

afterWrite

public void afterWrite(List<? extends org.duracloud.common.model.ContentItem> items)

Specified by:

afterWrite in interface org.springframework.batch.core.ItemWriteListener<org.duracloud.common.model.ContentItem>