Package org.jgroups.tests

Class RpcDispatcherBlocking

java.lang.Object

org.jgroups.tests.RpcDispatcherBlocking

All Implemented Interfaces:

Receiver

public class RpcDispatcherBlocking
extends Object
implements Receiver

Tests synchronous group RPCs. 2 main test cases:

1. Member crashes during invocation of sync group RPC: start 3 instances (A, B,C), set the timeout to be 30 seconds. Then invoke a sync group RPC by A (press 's' in A's window). A,B and C should receive the RPC. Now kill C. After some time, A's method call should return and show A's and B's reply to be valid, while showing C's response marked as suspected.
2. Member joins group during synchronous group RPC: start A and B with timeout=30000. Invoke a sync group RPC on A. Start C. A and B should not receive the view change before the group RPC has returned with A's and B's results. Therefore A and B should not wait for C's response, which would never be received because C never got the RPC in the first place. This would block A forever.

Field Summary

Fields

Modifier and Type	Field	Description
(package private) JChannel	channel
(package private) RpcDispatcher	disp
(package private) int	i
(package private) String	props
(package private) long	timeout

Constructor Summary

Constructors

Constructor	Description
RpcDispatcherBlocking(String props, long timeout)

Method Summary

Modifier and Type	Method	Description
(package private) static void	help()
static void	main(String[] args)
void	print(int i)
(package private) RspList	sendGroupRpc()
void	start()
void	viewAccepted(View new_view)	Called when a change in membership has occurred.

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.jgroups.Receiver

block, getState, receive, receive, setState, unblock

Field Details

disp

RpcDispatcher disp

channel

JChannel channel

timeout

long timeout

props

String props

i

int i

Constructor Details

RpcDispatcherBlocking

public RpcDispatcherBlocking(String props,
 long timeout)

Method Details

print

public void print(int i)
           throws Exception

Throws:

Exception

viewAccepted

public void viewAccepted(View new_view)

Description copied from interface: Receiver

Called when a change in membership has occurred. No long running actions, sending of messages or anything that could block should be done in this callback. If some long running action needs to be performed, it should be done in a separate thread.

Note that on reception of the first view (a new member just joined), the channel will not yet be in the connected state. This only happens when JChannel.connect(String) returns.

Specified by:

viewAccepted in interface Receiver

start

public void start()
           throws Exception

Throws:

Exception

sendGroupRpc

RspList sendGroupRpc()
              throws Exception

Throws:

Exception

main

public static void main(String[] args)

help

static void help()