Package org.apache.iceberg.gcp.gcs

Class GCSFileIO

java.lang.Object

org.apache.iceberg.gcp.gcs.GCSFileIO

All Implemented Interfaces:

Closeable, Serializable, AutoCloseable, DelegateFileIO, FileIO, SupportsBulkOperations, SupportsPrefixOperations, SupportsStorageCredentials

public class GCSFileIO
extends Object
implements DelegateFileIO, SupportsStorageCredentials

FileIO Implementation backed by Google Cloud Storage (GCS)

Locations follow the conventions used by BlobId.fromGsUtilUri that follow the convention

gs://<bucket>/<blob_path>

See Cloud Storage Overview

See Also:

• Serialized Form

Constructor Summary

Constructors

Constructor	Description
GCSFileIO()	No-arg constructor to load the FileIO dynamically.
GCSFileIO(SerializableSupplier<com.google.cloud.storage.Storage> storageSupplier, GCPProperties gcpProperties)	Constructor with custom storage supplier and GCP properties.

Method Summary

Modifier and Type	Method	Description
com.google.cloud.storage.Storage	client()
void	close()	Close File IO to release underlying resources.
List<StorageCredential>	credentials()
void	deleteFile(String path)	Delete the file at the given path.
void	deleteFiles(Iterable<String> pathsToDelete)	Delete the files at the given paths.
void	deletePrefix(String prefix)	Delete all files under a prefix.
void	initialize(Map<String,String> props)	Initialize File IO from catalog properties.
Iterable<FileInfo>	listPrefix(String prefix)	Return an iterable of all files under a prefix.
InputFile	newInputFile(String path)	Get a InputFile instance to read bytes from the file at the given path.
InputFile	newInputFile(String path, long length)	Get a InputFile instance to read bytes from the file at the given path, with a known file length.
OutputFile	newOutputFile(String path)	Get a OutputFile instance to write bytes to the file at the given path.
Map<String,String>	properties()	Returns the property map used to configure this FileIO
void	setCredentials(List<StorageCredential> credentials)

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.apache.iceberg.io.FileIO

deleteFile, deleteFile, newInputFile, newInputFile, newInputFile

Constructor Details

GCSFileIO

public GCSFileIO()

No-arg constructor to load the FileIO dynamically.

All fields are initialized by calling initialize(Map) later.

GCSFileIO

public GCSFileIO(SerializableSupplier<com.google.cloud.storage.Storage> storageSupplier,
 GCPProperties gcpProperties)

Constructor with custom storage supplier and GCP properties.

Calling initialize(Map) will overwrite information set in this constructor.

Parameters:

storageSupplier - storage supplier

gcpProperties - gcp properties

Method Details

newInputFile

public InputFile newInputFile(String path)

Description copied from interface: FileIO

Get a InputFile instance to read bytes from the file at the given path.

Specified by:

newInputFile in interface FileIO

newInputFile

public InputFile newInputFile(String path,
 long length)

Description copied from interface: FileIO

Get a InputFile instance to read bytes from the file at the given path, with a known file length.

Specified by:

newInputFile in interface FileIO

newOutputFile

public OutputFile newOutputFile(String path)

Description copied from interface: FileIO

Get a OutputFile instance to write bytes to the file at the given path.

Specified by:

newOutputFile in interface FileIO

deleteFile

public void deleteFile(String path)

Description copied from interface: FileIO

Delete the file at the given path.

Specified by:

deleteFile in interface FileIO

properties

public Map<String,String> properties()

Description copied from interface: FileIO

Returns the property map used to configure this FileIO

Specified by:

properties in interface FileIO

client

public com.google.cloud.storage.Storage client()

initialize

public void initialize(Map<String,String> props)

Description copied from interface: FileIO

Initialize File IO from catalog properties.

Specified by:

initialize in interface FileIO

Parameters:

props - catalog properties

close

public void close()

Description copied from interface: FileIO

Close File IO to release underlying resources.

Calling this method is only required when this FileIO instance is no longer expected to be used, and the resources it holds need to be explicitly released to avoid resource leaks.

Specified by:

close in interface AutoCloseable

Specified by:

close in interface Closeable

Specified by:

close in interface FileIO

listPrefix

public Iterable<FileInfo> listPrefix(String prefix)

Description copied from interface: SupportsPrefixOperations

Return an iterable of all files under a prefix.

Hierarchical file systems (e.g. HDFS) may impose additional restrictions like the prefix must fully match a directory whereas key/value object stores may allow for arbitrary prefixes.

Specified by:

listPrefix in interface SupportsPrefixOperations

Parameters:

prefix - prefix to list

Returns:

iterable of file information

deletePrefix

public void deletePrefix(String prefix)

Description copied from interface: SupportsPrefixOperations

Delete all files under a prefix.

Hierarchical file systems (e.g. HDFS) may impose additional restrictions like the prefix must fully match a directory whereas key/value object stores may allow for arbitrary prefixes.

Specified by:

deletePrefix in interface SupportsPrefixOperations

Parameters:

prefix - prefix to delete

deleteFiles

public void deleteFiles(Iterable<String> pathsToDelete)
                 throws BulkDeletionFailureException

Description copied from interface: SupportsBulkOperations

Delete the files at the given paths.

Specified by:

deleteFiles in interface SupportsBulkOperations

Parameters:

pathsToDelete - The paths to delete

Throws:

BulkDeletionFailureException - in case of failure to delete at least 1 file

setCredentials

public void setCredentials(List<StorageCredential> credentials)

Specified by:

setCredentials in interface SupportsStorageCredentials

credentials

public List<StorageCredential> credentials()

Specified by:

credentials in interface SupportsStorageCredentials