Package org.duracloud.snapshot.service.impl

Class SpaceItemWriter

java.lang.Object

org.duracloud.snapshot.service.impl.StepExecutionSupport

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 StepExecutionSupport
implements org.springframework.batch.item.ItemWriter<org.duracloud.common.model.ContentItem>, 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

Field Summary

Fields inherited from class org.duracloud.snapshot.service.impl.StepExecutionSupport

ERRORS_KEY, ITEMS_READ_KEY

Constructor Summary

Constructors

Constructor	Description
SpaceItemWriter(Snapshot snapshot, org.duracloud.retrieval.source.RetrievalSource retrievalSource, File contentDir, org.duracloud.retrieval.mgmt.OutputWriter outputWriter, File propsFile, File md5ManifestFile, File sha256ManifestFile, SnapshotManager snapshotManager, SpaceManifestSnapshotManifestVerifier spaceManifestSnapshotManifestVerifier)

Method Summary

Modifier and Type	Method	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)
protected void	closeDatabase()
protected void	deleteDatabase()
protected int	getTotalChecksumsPerformed()
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(String contentId, Map<String,String> props, boolean lastItem)
protected void	writeMD5Checksum(String contentId, String md5Checksum)
protected void	writeSHA256Checksum(String contentId, String sha256Checksum)

Methods inherited from class org.duracloud.snapshot.service.impl.StepExecutionSupport

addError, addToItemsRead, addToLong, clearErrors, failExecution, getErrors, getExecutionContext, getItemsRead, getLongValue, getStepExecution, resetContextState, setIsTest, skipLinesAlreadyRead, verifySpace

Methods inherited from class java.lang.Object

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

Constructor Details

SpaceItemWriter

public SpaceItemWriter(Snapshot snapshot,
 org.duracloud.retrieval.source.RetrievalSource retrievalSource,
 File contentDir,
 org.duracloud.retrieval.mgmt.OutputWriter outputWriter,
 File propsFile,
 File md5ManifestFile,
 File sha256ManifestFile,
 SnapshotManager snapshotManager,
 SpaceManifestSnapshotManifestVerifier spaceManifestSnapshotManifestVerifier)

Parameters:

snapshot -

retrievalSource -

contentDir -

outputWriter -

propsFile -

md5ManifestFile -

sha256ManifestFile -

snapshotManager -

spaceManifestSnapshotManifestVerifier -

Method Details

closeDatabase

protected void closeDatabase()

deleteDatabase

protected void deleteDatabase()

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

getTotalChecksumsPerformed

protected int getTotalChecksumsPerformed()

writeMD5Checksum

protected void writeMD5Checksum(String contentId,
 String md5Checksum)
                         throws IOException

Throws:

IOException

writeSHA256Checksum

protected void writeSHA256Checksum(String contentId,
 String sha256Checksum)
                            throws IOException

Throws:

IOException

writeContentProperties

protected void writeContentProperties(String contentId,
 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

Overrides:

afterStep in class StepExecutionSupport

beforeStep

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

Specified by:

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

Overrides:

beforeStep in class StepExecutionSupport

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>