Package io.trino.tempto.internal.hadoop.hdfs

Class WebHdfsClient

java.lang.Object

io.trino.tempto.internal.hadoop.hdfs.WebHdfsClient

All Implemented Interfaces:

HdfsClient

public class WebHdfsClient
extends Object
implements HdfsClient

HDFS client based on WebHDFS REST API.

Nested Class Summary

Nested classes/interfaces inherited from interface io.trino.tempto.hadoop.hdfs.HdfsClient

HdfsClient.RepeatableContentProducer

Field Summary

Fields

Modifier and Type	Field	Description
static final String	CONF_HDFS_PASSWORD_KEY
static final String	CONF_HDFS_USERNAME_KEY
static final String	CONF_HDFS_WEBHDFS_URI_KEY

Constructor Summary

Constructors

Constructor	Description
WebHdfsClient(String uri, String username, HttpRequestsExecutor httpRequestsExecutor)

Method Summary

Modifier and Type	Method	Description
void	createDirectory(String path)
void	delete(String path)
boolean	exist(String path)
String	getGroup(String path)
long	getLength(String path)
String	getOwner(String path)
String	getPermission(String path)
Optional<String>	getXAttr(String path, String key)
List<String>	listDirectory(String path)
void	loadFile(String path, OutputStream outputStream)
void	removeXAttr(String path, String key)
void	saveFile(String path, HdfsClient.RepeatableContentProducer repeatableContentProducer)
void	saveFile(String path, InputStream input)
void	setGroup(String path, String group)
void	setOwner(String path, String owner)
void	setPermission(String path, String octalPermissions)
void	setXAttr(String path, String key, String value)

Methods inherited from class java.lang.Object

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

Methods inherited from interface io.trino.tempto.hadoop.hdfs.HdfsClient

loadFile, saveFile

Field Details

CONF_HDFS_WEBHDFS_URI_KEY

public static final String CONF_HDFS_WEBHDFS_URI_KEY

See Also:

• Constant Field Values

CONF_HDFS_USERNAME_KEY

public static final String CONF_HDFS_USERNAME_KEY

See Also:

• Constant Field Values

CONF_HDFS_PASSWORD_KEY

public static final String CONF_HDFS_PASSWORD_KEY

See Also:

• Constant Field Values

Constructor Details

WebHdfsClient

@Inject
public WebHdfsClient(String uri,
 String username,
 HttpRequestsExecutor httpRequestsExecutor)

Method Details

createDirectory

public void createDirectory(String path)

Specified by:

createDirectory in interface HdfsClient

delete

public void delete(String path)

Specified by:

delete in interface HdfsClient

saveFile

public void saveFile(String path,
 InputStream input)

Specified by:

saveFile in interface HdfsClient

saveFile

public void saveFile(String path,
 HdfsClient.RepeatableContentProducer repeatableContentProducer)

Specified by:

saveFile in interface HdfsClient

loadFile

public void loadFile(String path,
 OutputStream outputStream)

Specified by:

loadFile in interface HdfsClient

listDirectory

public List<String> listDirectory(String path)

Specified by:

listDirectory in interface HdfsClient

getLength

public long getLength(String path)

Specified by:

getLength in interface HdfsClient

Parameters:

path - File to be examined

Returns:

length of a file stored in HDFS, -1 if file not exists

getOwner

public String getOwner(String path)

Specified by:

getOwner in interface HdfsClient

setOwner

public void setOwner(String path,
 String owner)

Specified by:

setOwner in interface HdfsClient

getGroup

public String getGroup(String path)

Specified by:

getGroup in interface HdfsClient

setGroup

public void setGroup(String path,
 String group)

Specified by:

setGroup in interface HdfsClient

getPermission

public String getPermission(String path)

Specified by:

getPermission in interface HdfsClient

setPermission

public void setPermission(String path,
 String octalPermissions)

Specified by:

setPermission in interface HdfsClient

exist

public boolean exist(String path)

Specified by:

exist in interface HdfsClient

setXAttr

public void setXAttr(String path,
 String key,
 String value)

Specified by:

setXAttr in interface HdfsClient

removeXAttr

public void removeXAttr(String path,
 String key)

Specified by:

removeXAttr in interface HdfsClient

getXAttr

public Optional<String> getXAttr(String path,
 String key)

Specified by:

getXAttr in interface HdfsClient