org.apache.http.impl.nio.reactor
Class IOSessionImpl

java.lang.Object
  extended by org.apache.http.impl.nio.reactor.IOSessionImpl
All Implemented Interfaces:
IOSession, SocketAccessor

@ThreadSafe
public class IOSessionImpl
extends Object
implements IOSession, SocketAccessor

Default implementation of IOSession.

Since:
4.0

Field Summary
 
Fields inherited from interface org.apache.http.nio.reactor.IOSession
ACTIVE, ATTACHMENT_KEY, CLOSED, CLOSING
 
Constructor Summary
IOSessionImpl(SelectionKey key, org.apache.http.impl.nio.reactor.InterestOpsCallback interestOpsCallback, SessionClosedCallback sessionClosedCallback)
          Creates new instance of IOSessionImpl.
IOSessionImpl(SelectionKey key, SessionClosedCallback sessionClosedCallback)
          Creates new instance of IOSessionImpl.
 
Method Summary
 ByteChannel channel()
          Returns the underlying I/O channel associated with this session.
 void clearEvent(int op)
          Clears interest in a particular I/O event type by updating the event mask associated with the session.
 void close()
          Terminates the session gracefully and closes the underlying I/O channel.
 Object getAttribute(String name)
          Returns the value of the attribute with the given name.
 int getEventMask()
          Returns mask of I/O evens this session declared interest in.
 long getLastAccessTime()
           
 long getLastReadTime()
           
 long getLastWriteTime()
           
 SocketAddress getLocalAddress()
          Returns local address.
 SocketAddress getRemoteAddress()
          Returns address of the remote peer.
 Socket getSocket()
          Return the underlying socket
 int getSocketTimeout()
          Returns value of the socket timeout in milliseconds.
 long getStartedTime()
           
 int getStatus()
          Returns status of the session:
 boolean hasBufferedInput()
          Determines if the input buffer associated with the session contains data.
 boolean hasBufferedOutput()
          Determines if the output buffer associated with the session contains data.
 boolean isClosed()
          Determines if the session has been terminated.
 Object removeAttribute(String name)
          Removes attribute with the given name.
 void setAttribute(String name, Object obj)
          This method can be used to associate a particular object with the session by the given attribute name.
 void setBufferStatus(SessionBufferStatus bufferStatus)
          Quite often I/O sessions need to maintain internal I/O buffers in order to transform input / output data prior to returning it to the consumer or writing it to the underlying channel.
 void setEvent(int op)
          Declares interest in a particular I/O event type by updating the event mask associated with the session.
 void setEventMask(int ops)
          Declares interest in I/O event notifications by setting the event mask associated with the session
 void setSocketTimeout(int timeout)
          Sets value of the socket timeout in milliseconds.
 void shutdown()
          Terminates the session by shutting down the underlying I/O channel.
 String toString()
           
 
Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait
 

Constructor Detail

IOSessionImpl

public IOSessionImpl(SelectionKey key,
                     org.apache.http.impl.nio.reactor.InterestOpsCallback interestOpsCallback,
                     SessionClosedCallback sessionClosedCallback)
Creates new instance of IOSessionImpl.

Parameters:
key - the selection key.
interestOpsCallback - interestOps callback.
sessionClosedCallback - session closed callback.
Since:
4.1

IOSessionImpl

public IOSessionImpl(SelectionKey key,
                     SessionClosedCallback sessionClosedCallback)
Creates new instance of IOSessionImpl.

Parameters:
key - the selection key.
sessionClosedCallback - session closed callback.
Method Detail

channel

public ByteChannel channel()
Description copied from interface: IOSession
Returns the underlying I/O channel associated with this session.

Specified by:
channel in interface IOSession
Returns:
the I/O channel.

getLocalAddress

public SocketAddress getLocalAddress()
Description copied from interface: IOSession
Returns local address.

Specified by:
getLocalAddress in interface IOSession
Returns:
socket address.

getRemoteAddress

public SocketAddress getRemoteAddress()
Description copied from interface: IOSession
Returns address of the remote peer.

Specified by:
getRemoteAddress in interface IOSession
Returns:
socket address.

getEventMask

public int getEventMask()
Description copied from interface: IOSession
Returns mask of I/O evens this session declared interest in.

Specified by:
getEventMask in interface IOSession
Returns:
I/O event mask.

setEventMask

public void setEventMask(int ops)
Description copied from interface: IOSession
Declares interest in I/O event notifications by setting the event mask associated with the session

Specified by:
setEventMask in interface IOSession
Parameters:
ops - new I/O event mask.

setEvent

public void setEvent(int op)
Description copied from interface: IOSession
Declares interest in a particular I/O event type by updating the event mask associated with the session.

Specified by:
setEvent in interface IOSession
Parameters:
op - I/O event type.

clearEvent

public void clearEvent(int op)
Description copied from interface: IOSession
Clears interest in a particular I/O event type by updating the event mask associated with the session.

Specified by:
clearEvent in interface IOSession
Parameters:
op - I/O event type.

getSocketTimeout

public int getSocketTimeout()
Description copied from interface: IOSession
Returns value of the socket timeout in milliseconds. The value of 0 signifies the session cannot time out.

Specified by:
getSocketTimeout in interface IOSession
Returns:
socket timeout.

setSocketTimeout

public void setSocketTimeout(int timeout)
Description copied from interface: IOSession
Sets value of the socket timeout in milliseconds. The value of 0 signifies the session cannot time out.

Specified by:
setSocketTimeout in interface IOSession
Parameters:
timeout - socket timeout.

close

public void close()
Description copied from interface: IOSession
Terminates the session gracefully and closes the underlying I/O channel. This method ensures that session termination handshake, such as the one used by the SSL/TLS protocol, is correctly carried out.

Specified by:
close in interface IOSession

getStatus

public int getStatus()
Description copied from interface: IOSession
Returns status of the session:

IOSession.ACTIVE: session is active.

IOSession.CLOSING: session is being closed.

IOSession.CLOSED: session has been terminated.

Specified by:
getStatus in interface IOSession
Returns:
session status.

isClosed

public boolean isClosed()
Description copied from interface: IOSession
Determines if the session has been terminated.

Specified by:
isClosed in interface IOSession
Returns:
true if the session has been terminated, false otherwise.

shutdown

public void shutdown()
Description copied from interface: IOSession
Terminates the session by shutting down the underlying I/O channel.

Specified by:
shutdown in interface IOSession

hasBufferedInput

public boolean hasBufferedInput()
Description copied from interface: IOSession
Determines if the input buffer associated with the session contains data.

Specified by:
hasBufferedInput in interface IOSession
Returns:
true if the session input buffer contains data, false otherwise.

hasBufferedOutput

public boolean hasBufferedOutput()
Description copied from interface: IOSession
Determines if the output buffer associated with the session contains data.

Specified by:
hasBufferedOutput in interface IOSession
Returns:
true if the session output buffer contains data, false otherwise.

setBufferStatus

public void setBufferStatus(SessionBufferStatus bufferStatus)
Description copied from interface: IOSession
Quite often I/O sessions need to maintain internal I/O buffers in order to transform input / output data prior to returning it to the consumer or writing it to the underlying channel. Memory management in HttpCore NIO is based on the fundamental principle that the data consumer can read only as much input data as it can process without having to allocate more memory. That means, quite often some input data may remain unread in one of the internal or external session buffers. The I/O reactor can query the status of these session buffers, and make sure the consumer gets notified correctly as more data gets stored in one of the session buffers, thus allowing the consumer to read the remaining data once it is able to process it

I/O sessions can be made aware of the status of external session buffers using the SessionBufferStatus interface.

Specified by:
setBufferStatus in interface IOSession

getAttribute

public Object getAttribute(String name)
Description copied from interface: IOSession
Returns the value of the attribute with the given name. The value can be null if not set.

The value of the session attachment object can be obtained using IOSession.ATTACHMENT_KEY name.

Specified by:
getAttribute in interface IOSession
Parameters:
name - name of the attribute.
Returns:
value of the attribute.
See Also:
IOSession.setAttribute(String, Object)

removeAttribute

public Object removeAttribute(String name)
Description copied from interface: IOSession
Removes attribute with the given name.

Specified by:
removeAttribute in interface IOSession
Parameters:
name - name of the attribute to be removed.
Returns:
value of the removed attribute.
See Also:
IOSession.setAttribute(String, Object)

setAttribute

public void setAttribute(String name,
                         Object obj)
Description copied from interface: IOSession
This method can be used to associate a particular object with the session by the given attribute name.

I/O sessions are not bound to an execution thread, therefore one cannot use the context of the thread to store a session's state. All details about a particular session must be stored within the session itself.

Specified by:
setAttribute in interface IOSession
Parameters:
name - name of the attribute.
obj - value of the attribute.

getStartedTime

public long getStartedTime()

getLastReadTime

public long getLastReadTime()

getLastWriteTime

public long getLastWriteTime()

getLastAccessTime

public long getLastAccessTime()

toString

public String toString()
Overrides:
toString in class Object

getSocket

public Socket getSocket()
Description copied from interface: SocketAccessor
Return the underlying socket

Specified by:
getSocket in interface SocketAccessor
Returns:
- the underlying Socket, may be null.


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