Package com.github.ddth.queue.impl.universal

Class BaseUniversalRocksDbQueue<T extends BaseUniversalQueueMessage<ID>,ID>

java.lang.Object

com.github.ddth.queue.impl.AbstractQueue<ID,DATA>

com.github.ddth.queue.impl.AbstractEphemeralSupportQueue<ID,DATA>

com.github.ddth.queue.impl.RocksDbQueue<ID,byte[]>

com.github.ddth.queue.impl.universal.BaseUniversalRocksDbQueue<T,ID>

Type Parameters:

T -

All Implemented Interfaces:

IQueue<ID,byte[]>, AutoCloseable

Direct Known Subclasses:

UniversalRocksDbQueue, UniversalRocksDbQueue

public abstract class BaseUniversalRocksDbQueue<T extends BaseUniversalQueueMessage<ID>,ID>
extends RocksDbQueue<ID,byte[]>

Base class for universal RocksDB queue implementations.

Since:

0.4.0

Author:

Thanh Nguyen

Nested Class Summary

Nested classes/interfaces inherited from class com.github.ddth.queue.impl.AbstractQueue

AbstractQueue.PutToQueueCase

Field Summary

Fields inherited from class com.github.ddth.queue.impl.RocksDbQueue

DEFAULT_CFNAME_EPHEMERAL, DEFAULT_CFNAME_METADATA, DEFAULT_CFNAME_QUEUE, DEFAULT_STORAGE_DIR

Fields inherited from interface com.github.ddth.queue.IQueue

SIZE_NOT_SUPPORTED

Constructor Summary

Constructors

Constructor	Description
BaseUniversalRocksDbQueue()

Method Summary

Modifier and Type	Method	Description
T	take()	Take a message out of queue.

Methods inherited from class com.github.ddth.queue.impl.RocksDbQueue

destroy, doPutToQueue, ephemeralSize, finish, getCfNameEphemeral, getCfNameMetadata, getCfNameQueue, getOrphanMessages, getStorageDir, init, queueSize, setCfNameEphemeral, setCfNameMetadata, setCfNameQueue, setStorageDir

Methods inherited from class com.github.ddth.queue.impl.AbstractEphemeralSupportQueue

getEphemeralDisabled, getEphemeralMaxSize, isEphemeralDisabled, setEphemeralDisabled, setEphemeralMaxSize

Methods inherited from class com.github.ddth.queue.impl.AbstractQueue

close, createMessage, createMessage, createMessage, deserialize, deserialize, getMessageFactory, getQueueName, getSerDeser, queue, requeue, requeueSilent, serialize, setMessageFactory, setQueueName, setSerDeser

Methods inherited from class java.lang.Object

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

Constructor Detail

BaseUniversalRocksDbQueue

public BaseUniversalRocksDbQueue()

Method Detail

take

public T take()

Take a message out of queue.

Implementation flow:

• Read message from head of queue storage.
• Write message to ephemeral storage.
• Remove message from queue storage.

Note: ephemeral storage implementation is optional, depends on implementation.

Specified by:

take in interface IQueue<T extends BaseUniversalQueueMessage<ID>,ID>

Overrides:

take in class RocksDbQueue<ID,byte[]>

Returns: