org.apache.james.mailbox.store.mail

Class ZooUidProvider<E>

java.lang.Object

org.apache.james.mailbox.store.mail.ZooUidProvider<E>

All Implemented Interfaces:

UidProvider<E>

public class ZooUidProvider<E>
extends Object
implements UidProvider<E>

ZooKeepr based implementation of a distribuited sequential UID generator.

Field Summary

Fields

Modifier and Type	Field and Description
static String	UID_PATH_SUFFIX

Constructor Summary

Constructors

Constructor and Description
ZooUidProvider(com.netflix.curator.framework.CuratorFramework client)
ZooUidProvider(com.netflix.curator.framework.CuratorFramework client, com.netflix.curator.RetryPolicy retryPolicy)

Method Summary

Methods

Modifier and Type	Method and Description
long	lastUid(MailboxSession session, Mailbox<E> mailbox) Return the last uid which were used for storing a Message in the Mailbox
long	nextUid(MailboxSession session, Mailbox mailbox) Return the next uid which can be used while append a Message to the Mailbox.
static String	pathForMailbox(Mailbox mailbox)

Methods inherited from class java.lang.Object

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

Field Detail

UID_PATH_SUFFIX

public static final String UID_PATH_SUFFIX

See Also:

Constant Field Values

Constructor Detail

ZooUidProvider

public ZooUidProvider(com.netflix.curator.framework.CuratorFramework client)

ZooUidProvider

public ZooUidProvider(com.netflix.curator.framework.CuratorFramework client,
              com.netflix.curator.RetryPolicy retryPolicy)

Method Detail

nextUid

public long nextUid(MailboxSession session,
           Mailbox mailbox)
             throws MailboxException

Description copied from interface: UidProvider

Return the next uid which can be used while append a Message to the Mailbox. Its important that the returned uid is higher then the last used and that the next call of this method does return a higher one

Specified by:

nextUid in interface UidProvider<E>

Returns:

nextUid

Throws:

MailboxException

lastUid

public long lastUid(MailboxSession session,
           Mailbox<E> mailbox)
             throws MailboxException

Description copied from interface: UidProvider

Return the last uid which were used for storing a Message in the Mailbox

Specified by:

lastUid in interface UidProvider<E>

Returns:

lastUid

Throws:

MailboxException

pathForMailbox

public static String pathForMailbox(Mailbox mailbox)