/*
* Copyright 2014, The Sporting Exchange Limited
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package com.betfair.cougar.netutil.nio.monitoring;
import com.betfair.cougar.netutil.nio.NioLogger;
import org.apache.mina.common.IoFilter;
import org.apache.mina.common.IoSession;
import org.junit.After;
import org.junit.Before;
import org.junit.Test;
import org.mockito.ArgumentCaptor;
import javax.management.MBeanServer;
import javax.management.ObjectName;
import java.net.InetSocketAddress;
import java.util.ArrayList;
import java.util.List;
import static junit.framework.Assert.assertEquals;
import static org.mockito.Mockito.*;
/**
*/
public class SessionWriteQueueMonitoringTest {
private SessionWriteQueueMonitoring subject;
private IoSession session1;
private IoSession session2;
private IoFilter.NextFilter nextFilter;
private IoFilter.WriteRequest writeRequest;
private List<IoSession> sessionsOpened;
private MBeanServer mBeanServer;
@Before
public void before() {
subject = new SessionWriteQueueMonitoring(new NioLogger("NONE"), 5);
session1 = mock(IoSession.class);
session2 = mock(IoSession.class);
nextFilter = mock(IoFilter.NextFilter.class);
writeRequest = mock(IoFilter.WriteRequest.class);
sessionsOpened = new ArrayList<IoSession>();
mBeanServer = mock(MBeanServer.class);
SessionWriteQueueMonitoring.setMBeanServer(mBeanServer);
}
@After
public void after() throws Exception {
for (IoSession session : sessionsOpened) {
subject.sessionClosed(nextFilter, session);
}
}
@Test
public void canGetUpToLimit() throws Exception {
when(session1.getAttribute("COUGAR_SESSION_ID")).thenReturn("00001");
when(session1.getRemoteAddress()).thenReturn(new InetSocketAddress("localhost", 1234));
subject.sessionOpened(nextFilter, session1);
sessionsOpened.add(session1);
subject.filterWrite(nextFilter, session1, writeRequest);
subject.filterWrite(nextFilter, session1, writeRequest);
subject.filterWrite(nextFilter, session1, writeRequest);
subject.filterWrite(nextFilter, session1, writeRequest);
subject.filterWrite(nextFilter, session1, writeRequest);
verify(nextFilter, times(1)).sessionOpened(session1);
verify(nextFilter, times(5)).filterWrite(session1, writeRequest);
verify(session1, never()).close();
}
@Test
public void overLimitTerminates() throws Exception {
when(session1.getAttribute("COUGAR_SESSION_ID")).thenReturn("00001");
when(session1.getRemoteAddress()).thenReturn(new InetSocketAddress("localhost", 1234));
subject.sessionOpened(nextFilter, session1);
sessionsOpened.add(session1);
subject.filterWrite(nextFilter, session1, writeRequest);
subject.filterWrite(nextFilter, session1, writeRequest);
subject.filterWrite(nextFilter, session1, writeRequest);
subject.filterWrite(nextFilter, session1, writeRequest);
subject.filterWrite(nextFilter, session1, writeRequest);
subject.filterWrite(nextFilter, session1, writeRequest);
verify(nextFilter, times(1)).sessionOpened(session1);
verify(nextFilter, times(5)).filterWrite(session1, writeRequest); // 6th attempt should not call this
verify(session1, times(1)).close();
}
@Test
public void countBackDown() throws Exception {
when(session1.getAttribute("COUGAR_SESSION_ID")).thenReturn("00001");
when(session1.getRemoteAddress()).thenReturn(new InetSocketAddress("localhost", 1234));
ArgumentCaptor<SessionWriteQueueMonitor> monitorCaptor = ArgumentCaptor.forClass(SessionWriteQueueMonitor.class);
ArgumentCaptor<ObjectName> objectNameCaptor = ArgumentCaptor.forClass(ObjectName.class);
subject.sessionOpened(nextFilter, session1);
sessionsOpened.add(session1);
subject.filterWrite(nextFilter, session1, writeRequest);
subject.filterWrite(nextFilter, session1, writeRequest);
subject.filterWrite(nextFilter, session1, writeRequest);
subject.messageSent(nextFilter, session1, null);
subject.messageSent(nextFilter, session1, null);
subject.messageSent(nextFilter, session1, null);
verify(mBeanServer, atLeastOnce()).registerMBean(monitorCaptor.capture(), objectNameCaptor.capture());
assertEquals(0, monitorCaptor.getAllValues().get(0).getQueueDepth());
assertEquals(new ObjectName("CoUGAR.socket.transport:name=sessionWriteQueueMonitor,remoteAddress=localhost_1234"), objectNameCaptor.getAllValues().get(0));
verify(nextFilter, times(1)).sessionOpened(session1);
verify(nextFilter, times(3)).filterWrite(session1, writeRequest);
verify(nextFilter, times(3)).messageSent(session1, null);
verify(session1, never()).close();
}
@Test
public void twoSessionsIndependent() throws Exception {
when(session1.getAttribute("COUGAR_SESSION_ID")).thenReturn("00001");
when(session1.getRemoteAddress()).thenReturn(new InetSocketAddress("localhost", 1234));
when(session2.getAttribute("COUGAR_SESSION_ID")).thenReturn("00002");
when(session2.getRemoteAddress()).thenReturn(new InetSocketAddress("localhost", 1235));
subject.sessionOpened(nextFilter, session1);
sessionsOpened.add(session1);
subject.sessionOpened(nextFilter, session2);
sessionsOpened.add(session2);
subject.filterWrite(nextFilter, session1, writeRequest);
subject.filterWrite(nextFilter, session1, writeRequest);
subject.filterWrite(nextFilter, session1, writeRequest);
subject.filterWrite(nextFilter, session2, writeRequest);
subject.filterWrite(nextFilter, session2, writeRequest);
subject.filterWrite(nextFilter, session2, writeRequest);
verify(nextFilter, times(1)).sessionOpened(session1);
verify(nextFilter, times(3)).filterWrite(session1, writeRequest);
verify(nextFilter, times(1)).sessionOpened(session2);
verify(nextFilter, times(3)).filterWrite(session2, writeRequest);
verify(session1, never()).close();
}
@Test
public void twoSessionsSameHostMonitoring() throws Exception {
when(session1.getAttribute("COUGAR_SESSION_ID")).thenReturn("00001");
when(session1.getRemoteAddress()).thenReturn(new InetSocketAddress("localhost", 1234));
when(session2.getAttribute("COUGAR_SESSION_ID")).thenReturn("00002");
when(session2.getRemoteAddress()).thenReturn(new InetSocketAddress("localhost", 1235));
ArgumentCaptor monitorCaptor = ArgumentCaptor.forClass(Object.class);
ArgumentCaptor<ObjectName> objectNameCaptor = ArgumentCaptor.forClass(ObjectName.class);
subject.sessionOpened(nextFilter, session1);
sessionsOpened.add(session1);
subject.sessionOpened(nextFilter, session2);
sessionsOpened.add(session2);
subject.filterWrite(nextFilter, session1, writeRequest);
subject.filterWrite(nextFilter, session1, writeRequest);
subject.filterWrite(nextFilter, session1, writeRequest);
subject.filterWrite(nextFilter, session1, writeRequest);
subject.filterWrite(nextFilter, session2, writeRequest);
subject.filterWrite(nextFilter, session2, writeRequest);
verify(mBeanServer, times(3)).registerMBean(monitorCaptor.capture(), objectNameCaptor.capture());
assertEquals(new ObjectName("CoUGAR.socket.transport:name=sessionWriteQueueMonitor,remoteAddress=localhost_1234"), objectNameCaptor.getAllValues().get(0));
assertEquals(new ObjectName("CoUGAR.socket.transport:name=sessionWriteQueueMonitor,remoteAddress=localhost_1235"), objectNameCaptor.getAllValues().get(2));
assertEquals(4, ((SessionWriteQueueMonitor)monitorCaptor.getAllValues().get(0)).getQueueDepth());
assertEquals(2, ((SessionWriteQueueMonitor)monitorCaptor.getAllValues().get(2)).getQueueDepth());
assertEquals(new ObjectName("CoUGAR.socket.transport:name=hostWriteQueueMonitor,remoteHost=localhost"), objectNameCaptor.getAllValues().get(1));
assertEquals(6, ((HostWriteQueueMonitor)monitorCaptor.getAllValues().get(1)).getTotalWriteQueueDepth());
assertEquals(2, ((HostWriteQueueMonitor)monitorCaptor.getAllValues().get(1)).getNumSessions());
assertEquals(4, ((HostWriteQueueMonitor)monitorCaptor.getAllValues().get(1)).getMaxWriteQueueDepth());
assertEquals(2, ((HostWriteQueueMonitor)monitorCaptor.getAllValues().get(1)).getMinWriteQueueDepth());
assertEquals(3, ((HostWriteQueueMonitor)monitorCaptor.getAllValues().get(1)).getMeanWriteQueueDepth());
assertEquals(6, ((HostWriteQueueMonitor)monitorCaptor.getAllValues().get(1)).getTotalWriteQueueDepth());
verify(nextFilter, times(1)).sessionOpened(session1);
verify(nextFilter, times(4)).filterWrite(session1, writeRequest);
verify(nextFilter, times(1)).sessionOpened(session2);
verify(nextFilter, times(2)).filterWrite(session2, writeRequest);
verify(session1, never()).close();
subject.sessionClosed(nextFilter, session1);
sessionsOpened.remove(session1);
subject.sessionClosed(nextFilter, session2);
sessionsOpened.remove(session2);
verify(nextFilter, times(1)).sessionClosed(session1);
verify(nextFilter, times(1)).sessionClosed(session2);
verify(mBeanServer, times(3)).unregisterMBean(objectNameCaptor.capture());
assertEquals(new ObjectName("CoUGAR.socket.transport:name=sessionWriteQueueMonitor,remoteAddress=localhost_1234"), objectNameCaptor.getAllValues().get(3));
assertEquals(new ObjectName("CoUGAR.socket.transport:name=sessionWriteQueueMonitor,remoteAddress=localhost_1235"), objectNameCaptor.getAllValues().get(4));
assertEquals(new ObjectName("CoUGAR.socket.transport:name=hostWriteQueueMonitor,remoteHost=localhost"), objectNameCaptor.getAllValues().get(5));
}
@Test
public void twoSessionsDifferentHostMonitoring() throws Exception {
when(session1.getAttribute("COUGAR_SESSION_ID")).thenReturn("00001");
when(session1.getRemoteAddress()).thenReturn(new InetSocketAddress("localhost", 1234));
when(session2.getAttribute("COUGAR_SESSION_ID")).thenReturn("00002");
when(session2.getRemoteAddress()).thenReturn(new InetSocketAddress("localhost2", 1235));
ArgumentCaptor monitorCaptor = ArgumentCaptor.forClass(Object.class);
ArgumentCaptor<ObjectName> objectNameCaptor = ArgumentCaptor.forClass(ObjectName.class);
subject.sessionOpened(nextFilter, session1);
sessionsOpened.add(session1);
subject.sessionOpened(nextFilter, session2);
sessionsOpened.add(session2);
subject.filterWrite(nextFilter, session1, writeRequest);
subject.filterWrite(nextFilter, session1, writeRequest);
subject.filterWrite(nextFilter, session1, writeRequest);
subject.filterWrite(nextFilter, session1, writeRequest);
subject.filterWrite(nextFilter, session2, writeRequest);
subject.filterWrite(nextFilter, session2, writeRequest);
verify(mBeanServer, times(4)).registerMBean(monitorCaptor.capture(), objectNameCaptor.capture());
assertEquals(new ObjectName("CoUGAR.socket.transport:name=sessionWriteQueueMonitor,remoteAddress=localhost_1234"), objectNameCaptor.getAllValues().get(0));
assertEquals(new ObjectName("CoUGAR.socket.transport:name=sessionWriteQueueMonitor,remoteAddress=localhost2_1235"), objectNameCaptor.getAllValues().get(2));
assertEquals(4, ((SessionWriteQueueMonitor)monitorCaptor.getAllValues().get(0)).getQueueDepth());
assertEquals(2, ((SessionWriteQueueMonitor)monitorCaptor.getAllValues().get(2)).getQueueDepth());
assertEquals(new ObjectName("CoUGAR.socket.transport:name=hostWriteQueueMonitor,remoteHost=localhost"), objectNameCaptor.getAllValues().get(1));
assertEquals(4, ((HostWriteQueueMonitor)monitorCaptor.getAllValues().get(1)).getTotalWriteQueueDepth());
assertEquals(1, ((HostWriteQueueMonitor)monitorCaptor.getAllValues().get(1)).getNumSessions());
assertEquals(4, ((HostWriteQueueMonitor)monitorCaptor.getAllValues().get(1)).getMaxWriteQueueDepth());
assertEquals(4, ((HostWriteQueueMonitor)monitorCaptor.getAllValues().get(1)).getMinWriteQueueDepth());
assertEquals(4, ((HostWriteQueueMonitor)monitorCaptor.getAllValues().get(1)).getMeanWriteQueueDepth());
assertEquals(4, ((HostWriteQueueMonitor)monitorCaptor.getAllValues().get(1)).getTotalWriteQueueDepth());
assertEquals(new ObjectName("CoUGAR.socket.transport:name=hostWriteQueueMonitor,remoteHost=localhost2"), objectNameCaptor.getAllValues().get(3));
assertEquals(2, ((HostWriteQueueMonitor)monitorCaptor.getAllValues().get(3)).getTotalWriteQueueDepth());
assertEquals(1, ((HostWriteQueueMonitor)monitorCaptor.getAllValues().get(3)).getNumSessions());
assertEquals(2, ((HostWriteQueueMonitor)monitorCaptor.getAllValues().get(3)).getMaxWriteQueueDepth());
assertEquals(2, ((HostWriteQueueMonitor)monitorCaptor.getAllValues().get(3)).getMinWriteQueueDepth());
assertEquals(2, ((HostWriteQueueMonitor)monitorCaptor.getAllValues().get(3)).getMeanWriteQueueDepth());
assertEquals(2, ((HostWriteQueueMonitor)monitorCaptor.getAllValues().get(3)).getTotalWriteQueueDepth());
verify(nextFilter, times(1)).sessionOpened(session1);
verify(nextFilter, times(4)).filterWrite(session1, writeRequest);
verify(nextFilter, times(1)).sessionOpened(session2);
verify(nextFilter, times(2)).filterWrite(session2, writeRequest);
verify(session1, never()).close();
subject.sessionClosed(nextFilter, session1);
sessionsOpened.remove(session1);
subject.sessionClosed(nextFilter, session2);
sessionsOpened.remove(session2);
verify(nextFilter, times(1)).sessionClosed(session1);
verify(nextFilter, times(1)).sessionClosed(session2);
verify(mBeanServer, times(4)).unregisterMBean(objectNameCaptor.capture());
assertEquals(new ObjectName("CoUGAR.socket.transport:name=sessionWriteQueueMonitor,remoteAddress=localhost_1234"), objectNameCaptor.getAllValues().get(4));
assertEquals(new ObjectName("CoUGAR.socket.transport:name=hostWriteQueueMonitor,remoteHost=localhost"), objectNameCaptor.getAllValues().get(5));
assertEquals(new ObjectName("CoUGAR.socket.transport:name=sessionWriteQueueMonitor,remoteAddress=localhost2_1235"), objectNameCaptor.getAllValues().get(6));
assertEquals(new ObjectName("CoUGAR.socket.transport:name=hostWriteQueueMonitor,remoteHost=localhost2"), objectNameCaptor.getAllValues().get(7));
}
}