Apache Tomcat 6.0.43

org.apache.catalina.tribes.group.interceptors
Class GzipInterceptor

java.lang.Object
  extended by org.apache.catalina.tribes.group.ChannelInterceptorBase
      extended by org.apache.catalina.tribes.group.interceptors.GzipInterceptor
All Implemented Interfaces:
ChannelInterceptor, Heartbeat, MembershipListener

public class GzipInterceptor
extends ChannelInterceptorBase

Version:
1.0
Author:
Filip Hanik

Nested Class Summary
 
Nested classes/interfaces inherited from interface org.apache.catalina.tribes.ChannelInterceptor
ChannelInterceptor.InterceptorEvent
 
Field Summary
static int DEFAULT_BUFFER_SIZE
           
 
Fields inherited from class org.apache.catalina.tribes.group.ChannelInterceptorBase
log, optionFlag
 
Constructor Summary
GzipInterceptor()
           
 
Method Summary
static byte[] compress(byte[] data)
           
static byte[] decompress(byte[] data)
           
static void main(java.lang.String[] arg)
           
 void messageReceived(ChannelMessage msg)
          the messageReceived is invoked when a message is received.
 void sendMessage(Member[] destination, ChannelMessage msg, InterceptorPayload payload)
          The sendMessage method is called when a message is being sent to one more destinations.
 
Methods inherited from class org.apache.catalina.tribes.group.ChannelInterceptorBase
accept, fireInterceptorEvent, getLocalMember, getMember, getMembers, getNext, getOptionFlag, getPrevious, hasMembers, heartbeat, memberAdded, memberDisappeared, okToProcess, setNext, setOptionFlag, setPrevious, start, stop
 
Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
 

Field Detail

DEFAULT_BUFFER_SIZE

public static final int DEFAULT_BUFFER_SIZE
See Also:
Constant Field Values
Constructor Detail

GzipInterceptor

public GzipInterceptor()
Method Detail

sendMessage

public void sendMessage(Member[] destination,
                        ChannelMessage msg,
                        InterceptorPayload payload)
                 throws ChannelException
Description copied from interface: ChannelInterceptor
The sendMessage method is called when a message is being sent to one more destinations. The interceptor can modify any of the parameters and then pass on the message down the stack by invoking getNext().sendMessage(destination,msg,payload)
Alternatively the interceptor can stop the message from being sent by not invoking getNext().sendMessage(destination,msg,payload)
If the message is to be sent asynchronous the application can be notified of completion and errors by passing in an error handler attached to a payload object.
The ChannelMessage.getAddress contains Channel.getLocalMember, and can be overwritten to simulate a message sent from another node.

Specified by:
sendMessage in interface ChannelInterceptor
Overrides:
sendMessage in class ChannelInterceptorBase
Parameters:
destination - Member[] - the destination for this message
msg - ChannelMessage - the message to be sent
payload - InterceptorPayload - the payload, carrying an error handler and future useful data, can be null
Throws:
ChannelException
See Also:
ErrorHandler, InterceptorPayload

messageReceived

public void messageReceived(ChannelMessage msg)
Description copied from interface: ChannelInterceptor
the messageReceived is invoked when a message is received. ChannelMessage.getAddress() is the sender, or the reply-to address if it has been overwritten.

Specified by:
messageReceived in interface ChannelInterceptor
Overrides:
messageReceived in class ChannelInterceptorBase
Parameters:
msg - ChannelMessage

compress

public static byte[] compress(byte[] data)
                       throws java.io.IOException
Throws:
java.io.IOException

decompress

public static byte[] decompress(byte[] data)
                         throws java.io.IOException
Parameters:
data - Data to decompress
Returns:
Decompressed data
Throws:
java.io.IOException

main

public static void main(java.lang.String[] arg)
                 throws java.lang.Exception
Throws:
java.lang.Exception

Apache Tomcat 6.0.43

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