/// <summary>Verify the RPC server can shutdown properly when callQueue is full.</summary>
/// <exception cref="System.Exception"/>
public virtual void TestRPCServerShutdown()
{
int numClients = 3;
IList <Future <Void> > res = new AList <Future <Void> >();
ExecutorService executorService = Executors.NewFixedThreadPool(numClients);
Configuration conf = new Configuration();
conf.SetInt(CommonConfigurationKeys.IpcClientConnectMaxRetriesKey, 0);
Server server = new RPC.Builder(conf).SetProtocol(typeof(TestRPC.TestProtocol)).SetInstance
(new TestRPC.TestImpl()).SetBindAddress(Address).SetPort(0).SetQueueSizePerHandler
(1).SetNumHandlers(1).SetVerbose(true).Build();
server.Start();
TestRPC.TestProtocol proxy = RPC.GetProxy <TestRPC.TestProtocol>(TestRPC.TestProtocol
.versionID, NetUtils.GetConnectAddress(server), conf);
try
{
// start a sleep RPC call to consume the only handler thread.
// Start another sleep RPC call to make callQueue full.
// Start another sleep RPC call to make reader thread block on CallQueue.
for (int i = 0; i < numClients; i++)
{
res.AddItem(executorService.Submit(new _Callable_1046(proxy)));
}
while (server.GetCallQueueLen() != 1 && CountThreads(typeof(CallQueueManager).FullName
) != 1 && CountThreads(typeof(TestRPC.TestProtocol).FullName) != 1)
{
Thread.Sleep(100);
}
}
finally
{
try
{
server.Stop();
Assert.Equal("Not enough clients", numClients, res.Count);
foreach (Future <Void> f in res)
{
try
{
f.Get();
NUnit.Framework.Assert.Fail("Future get should not return");
}
catch (ExecutionException e)
{
Assert.True("Unexpected exception: " + e, e.InnerException is IOException
);
Log.Info("Expected exception", e.InnerException);
}
}
}
finally
{
RPC.StopProxy(proxy);
executorService.Shutdown();
}
}
}