Package org.apache.hadoop.ozone.om.request.util

Class OMMultipartUploadUtils

java.lang.Object

org.apache.hadoop.ozone.om.request.util.OMMultipartUploadUtils

public final class OMMultipartUploadUtils
extends Object

Utility class related to OM Multipart Upload.

Method Summary

Modifier and Type	Method	Description
static String	getMultipartOpenKey(String volumeName, String bucketName, String keyName, String multipartUploadId, org.apache.hadoop.ozone.om.OMMetadataManager omMetadataManager, org.apache.hadoop.ozone.om.helpers.BucketLayout bucketLayout)	Get the multipart open key based on the bucket layout.
static String	getMultipartUploadId()	Generate a unique Multipart Upload ID.
static String	getUploadIdFromDbKey(String key)	Get multipart upload ID from the DB key of multipart upload form openKeyTable/openFileTable.
static boolean	isMultipartKeySet(org.apache.hadoop.ozone.om.helpers.OmKeyInfo openKeyInfo)	Check whether key's isMultipartKey flag is set.

Methods inherited from class java.lang.Object

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

Method Details

getMultipartUploadId

public static String getMultipartUploadId()

Generate a unique Multipart Upload ID.

Returns:

multipart upload ID

getUploadIdFromDbKey

public static String getUploadIdFromDbKey(String key)

Get multipart upload ID from the DB key of multipart upload form openKeyTable/openFileTable. The DB keys of openKeyTable and openFileTable are different: openKeyTable: /{volumeName}/{bucketName}/{keyName}/{uploadId} openFileTable: /{volumeId}/{bucketId}/{parentId}/{fileName}/{uploadId} Despite the difference, both have the uploadId as the suffix of the DB key, we can extract this suffix to get the upload ID from the DB key. Upload ID format: uploadId = UUIDv4 + "-" + UniqueId#next

Parameters:

key - DB key

Returns:

upload ID if uploadId can be extracted from openDBKey otherwise null

getMultipartOpenKey

public static String getMultipartOpenKey(String volumeName,
 String bucketName,
 String keyName,
 String multipartUploadId,
 org.apache.hadoop.ozone.om.OMMetadataManager omMetadataManager,
 org.apache.hadoop.ozone.om.helpers.BucketLayout bucketLayout)
                                  throws IOException

Get the multipart open key based on the bucket layout.

Throws:

IOException

isMultipartKeySet

public static boolean isMultipartKeySet(org.apache.hadoop.ozone.om.helpers.OmKeyInfo openKeyInfo)

Check whether key's isMultipartKey flag is set.

Parameters:

openKeyInfo - open key

Returns:

true if flag is set, false otherwise.