Class NioReplicationTask
java.lang.Object
org.apache.catalina.tribes.transport.AbstractRxTask
org.apache.catalina.tribes.transport.nio.NioReplicationTask
- All Implemented Interfaces:
- Runnable
A worker thread class which can drain channels and echo-back the input. Each
 instance is constructed with a reference to the owning thread pool object.
 When started, the thread loops forever waiting to be awakened to service the
 channel associated with a SelectionKey object. The worker is tasked by
 calling its serviceChannel() method with a SelectionKey object. The
 serviceChannel() method stores the key reference in the thread object then
 calls notify() to wake it up. When the channel has been drained, the worker
 thread returns itself to its parent pool.
- 
Field SummaryFieldsFields inherited from class org.apache.catalina.tribes.transport.AbstractRxTaskOPTION_DIRECT_BUFFER, useBufferPool
- 
Constructor SummaryConstructors
- 
Method SummaryModifier and TypeMethodDescriptionprotected voiddrainChannel(SelectionKey key, ObjectReader reader) The actual code which drains the channel associated with the given key.intprotected voidregisterForRead(SelectionKey key, ObjectReader reader) voidrun()protected voidsendAck(SelectionKey key, WritableByteChannel channel, byte[] command, SocketAddress udpaddr) Send a reply-acknowledgement (6,2,3), sends it doing a busy write, the ACK is so small that it should always go to the buffer.voidCalled to initiate a unit of work by this worker thread on the provided SelectionKey object.voidsetRxBufSize(int rxBufSize) Methods inherited from class org.apache.catalina.tribes.transport.AbstractRxTaskclose, getCallback, getOptions, getTaskPool, getUseBufferPool, setCallback, setOptions, setTaskPool, setUseBufferPool
- 
Field Details- 
sm
 
- 
- 
Constructor Details- 
NioReplicationTask
 
- 
- 
Method Details- 
runpublic void run()
- 
serviceChannelCalled to initiate a unit of work by this worker thread on the provided SelectionKey object. This method is synchronized, as is the run() method, so only one key can be serviced at a given time. Before waking the worker thread, and before returning to the main selection loop, this key's interest set is updated to remove OP_READ. This will cause the selector to ignore read-readiness for this channel while the worker thread is servicing it.- Parameters:
- key- The key to process
 
- 
drainChannelThe actual code which drains the channel associated with the given key. This method assumes the key has been modified prior to invocation to turn off selection interest in OP_READ. When this method completes it re-enables OP_READ and calls wakeup() on the selector so the selector will resume watching this channel.- Parameters:
- key- The key to process
- reader- The reader
- Throws:
- Exception- IO error
 
- 
registerForRead
- 
sendAckprotected void sendAck(SelectionKey key, WritableByteChannel channel, byte[] command, SocketAddress udpaddr) Send a reply-acknowledgement (6,2,3), sends it doing a busy write, the ACK is so small that it should always go to the buffer.- Parameters:
- key- The key to use
- channel- The channel
- command- The command to write
- udpaddr- Target address
 
- 
setRxBufSizepublic void setRxBufSize(int rxBufSize) 
- 
getRxBufSizepublic int getRxBufSize()
 
-