Package org.yamcs.yarch

Class FileSystemBucket

java.lang.Object

org.yamcs.yarch.FileSystemBucket

All Implemented Interfaces:

Bucket

public class FileSystemBucket
extends Object
implements Bucket

Constructor Summary

Constructors

Constructor	Description
FileSystemBucket(String bucketName, Path root)

Method Summary

Modifier and Type	Method	Description
void	deleteObject(String objectName)
Tablespace.ObjectProperties	findObject(String objectName)	retrieve the object properties or null if not such an object exist
Path	getBucketRoot()
String	getName()	This bucket's name
byte[]	getObject(String objectName)	Retrieve object from the bucket.
Tablespace.BucketProperties	getProperties()
List<Tablespace.ObjectProperties>	listObjects(String prefix, Predicate<Tablespace.ObjectPropertiesOrBuilder> p)	retrieve objects whose name start with prefix and that match the condition Note that searching by prefix is cheap, the condition will be evaluated for all objects that match the prefix
void	putObject(String objectName, String contentType, Map<String,String> metadata, byte[] objectData)
void	setMaxObjects(int maxObjects)	Update the object count limit for this bucket.
void	setMaxSize(long maxSize)	Update the size limit for this bucket.

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.yamcs.yarch.Bucket

listObjects, listObjects, listObjects

Constructor Details

FileSystemBucket

public FileSystemBucket(String bucketName,
 Path root)
                 throws IOException

Throws:

IOException

Method Details

getName

public String getName()

Description copied from interface: Bucket

This bucket's name

Specified by:

getName in interface Bucket

setMaxSize

public void setMaxSize(long maxSize)
                throws IOException

Description copied from interface: Bucket

Update the size limit for this bucket.

If the specified size is smaller than the current size, the bucket will no longer accept new files.

Specified by:

setMaxSize in interface Bucket

Throws:

IOException

setMaxObjects

public void setMaxObjects(int maxObjects)
                   throws IOException

Description copied from interface: Bucket

Update the object count limit for this bucket.

If the specified count is smaller than the current count, the bucket will no longer accept new files.

Specified by:

setMaxObjects in interface Bucket

Throws:

IOException

getProperties

public Tablespace.BucketProperties getProperties()
                                          throws IOException

Specified by:

getProperties in interface Bucket

Throws:

IOException

listObjects

public List<Tablespace.ObjectProperties> listObjects(String prefix,
 Predicate<Tablespace.ObjectPropertiesOrBuilder> p)
                                              throws IOException

Description copied from interface: Bucket

retrieve objects whose name start with prefix and that match the condition Note that searching by prefix is cheap, the condition will be evaluated for all objects that match the prefix

Specified by:

listObjects in interface Bucket

p - predicate to be matched by the returned objects

Returns:

list of objects

Throws:

IOException

putObject

public void putObject(String objectName,
 String contentType,
 Map<String,String> metadata,
 byte[] objectData)
               throws IOException

Specified by:

putObject in interface Bucket

Throws:

IOException

getObject

public byte[] getObject(String objectName)
                 throws IOException

Description copied from interface: Bucket

Retrieve object from the bucket. Returns null if object does not exist.

Specified by:

getObject in interface Bucket

Returns:

Throws:

IOException

deleteObject

public void deleteObject(String objectName)
                  throws IOException

Specified by:

deleteObject in interface Bucket

Throws:

IOException

findObject

public Tablespace.ObjectProperties findObject(String objectName)
                                       throws IOException

Description copied from interface: Bucket

retrieve the object properties or null if not such an object exist

Specified by:

findObject in interface Bucket

Returns:

Throws:

IOException

getBucketRoot

public Path getBucketRoot()