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* Licensed to the Apache Software Foundation (ASF) under one
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* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you 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
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package org.apache.openjpa.persistence.event;
import java.util.Collection;
import java.util.HashMap;
import java.util.Map;
import javax.persistence.EntityManager;
import org.apache.openjpa.persistence.event.common.apps.Duration;
import org.apache.openjpa.persistence.event.common.apps.RuntimeTest1;
import org.apache.openjpa.persistence.common.utils.AbstractTestCase;
import org.apache.openjpa.event.RemoteCommitEvent;
import org.apache.openjpa.event.RemoteCommitListener;
import org.apache.openjpa.event.TCPRemoteCommitProvider;
import org.apache.openjpa.lib.conf.Configurations;
import org.apache.openjpa.persistence.OpenJPAEntityManagerFactory;
import org.apache.openjpa.persistence.OpenJPAEntityManagerFactorySPI;
public class TestTCPRemoteRecoveryTransmitAdds
extends AbstractTestCase {
public TestTCPRemoteRecoveryTransmitAdds(String s) {
super(s, "eventcactusapp");
}
public void setUp() {
deleteAll(RuntimeTest1.class);
}
public void tearDownTestClass()
throws Exception {
//super.tearDownTestClass();
}
private static final int NUM_OBJECTS = 1;
private void pause(double seconds) {
try {
Thread.currentThread().yield();
Thread.currentThread().sleep((int) seconds * 1000);
} catch (Exception e) {
}
}
public void testReceiverRecovers() {
// Create two pmfs in a cluster that are using RCPTCP.
OpenJPAEntityManagerFactory pmfSender = createDistinctFactory(
TCPRemoteCommitProvider.class,
"Port=5636, Addresses=127.0.0.1:5636;127.0.0.1:6636");
OpenJPAEntityManagerFactory pmfReceiver = createDistinctFactory(
TCPRemoteCommitProvider.class,
"Port=6636, Addresses=127.0.0.1:6636;127.0.0.1:5636");
// Register a RCEListener with the RCEM. Our RCEListener will
// record the total number of a,d, and u recevied from each
// RCE as the sending PM performs commits.
RemoteCommitListenerTestImpl listenerAtReceiver
= new RemoteCommitListenerTestImpl();
((OpenJPAEntityManagerFactorySPI) pmfReceiver).getConfiguration()
.getRemoteCommitEventManager().
addListener(listenerAtReceiver);
EntityManager pmSender = pmfSender.createEntityManager();
System.out.println("-------------------");
System.out.println("2 PMFs created, acting as a cluster using ports " +
"5636 and 6636");
System.out.println("Testing scenario where receiver is failed, then " +
"recovered ");
System.out.println("after two timeouts all the while with the " +
"sending pm continuing");
System.out.println("to send.");
// Perform a set of transactions. Events will be communicated
performAddsModifiesDeletes(pmSender, NUM_OBJECTS);
// Wait for a bit so the receiver can get the event.
pause(3);
// Now Fail the receiver in the cluster
System.out.println("About to close the receiving pmf.");
pmfReceiver.close();
// Wait for a bit longer so the listener's threads all
// get closed out.
pause(3);
assertEquals(NUM_OBJECTS, listenerAtReceiver.totalAdded);
assertEquals(NUM_OBJECTS, listenerAtReceiver.totalDeleted);
assertEquals(NUM_OBJECTS, listenerAtReceiver.totalUpdated);
System.out.println("You should now see 1 WARN triggered as the " +
"sender-pmf tries to send.");
// Perform second set of transactions. This will trigger a single
// log WARN as the pmf won't be able to communciate events to the
// second member of the cluster.
performAddsModifiesDeletes(pmSender, NUM_OBJECTS);
// Wait for a recoverytime, try transactions again, this will
// trigger an INFO
pause(15.1);
System.out.println("Waited for a while. Should see 1 INFO for next " +
"transaction.");
// This will trigger a single log INFO
performAddsModifiesDeletes(pmSender, NUM_OBJECTS);
// This delay should ensure this second sent of
// transmissions is dropped as expected. If we
// don't pause, the new pmf can be created, then the
// events will be sent by the worker threads, and
// the new pmf will receive this messages (which
// are supposed to be dropped)
pause(1.1);
// -----
// Now recovery the Receiver and test that messages
// resume being delivered.
// -----
System.out.println("Recovering receiver pmf.");
// Recreate the listener pmf of the cluster.
pmfReceiver = createDistinctFactory(
TCPRemoteCommitProvider.class,
"Port=6636, Addresses=127.0.0.1:6636;127.0.0.1:5636");
pause(1.0);
// reRegister the same listener
((OpenJPAEntityManagerFactorySPI) pmfReceiver).getConfiguration()
.getRemoteCommitEventManager().
addListener(listenerAtReceiver);
assertEquals(NUM_OBJECTS, listenerAtReceiver.totalAdded);
assertEquals(NUM_OBJECTS, listenerAtReceiver.totalDeleted);
assertEquals(NUM_OBJECTS, listenerAtReceiver.totalUpdated);
System.out.println("Now waiting a recoverytime so that the sender");
System.out.println("will resume trying to connect to the receiver.");
pause(15.1);
// These events should get communicated.
performAddsModifiesDeletes(pmSender, NUM_OBJECTS);
// Wait for a last little bit so the listener thread in
// the receiver PMF can get all messages.
pause(1.0);
assertEquals(2 * NUM_OBJECTS, listenerAtReceiver.totalAdded);
assertEquals(2 * NUM_OBJECTS, listenerAtReceiver.totalDeleted);
assertEquals(2 * NUM_OBJECTS, listenerAtReceiver.totalUpdated);
// shutdown
pmSender.close();
pmfSender.close();
pmfReceiver.close();
}
public void testSenderRecovers() {
// Create two pmfs in a cluster that are using RCPTCP.
OpenJPAEntityManagerFactory pmfSender = createDistinctFactory(
TCPRemoteCommitProvider.class,
"Port=5637, Addresses=127.0.0.1:5637;127.0.0.1:6637");
OpenJPAEntityManagerFactory pmfReceiver = createDistinctFactory(
TCPRemoteCommitProvider.class,
"Port=6637, Addresses=127.0.0.1:6637;127.0.0.1:5637");
RemoteCommitListenerTestImpl listenerAtReceiver
= new RemoteCommitListenerTestImpl();
((OpenJPAEntityManagerFactorySPI) pmfReceiver).getConfiguration()
.getRemoteCommitEventManager().
addListener(listenerAtReceiver);
EntityManager pmSender = pmfSender.createEntityManager();
System.out.println("-------------------");
System.out.println("2 PMFs created, acting as a cluster using ports " +
"5637 and 6637");
System.out.println("Testing scenario where sender fails and then " +
"later recovers.");
System.out.println("All the while the receiving pm stays up and " +
"should receive");
System.out.println("Events (both before and after the sender's " +
"failure).");
// Perform a set of transactions. Events in the cluster will be
// communicated
performAddsModifiesDeletes(pmSender, NUM_OBJECTS);
// Wait for a bit so the sockets in our sender PMF can fully transmit
// their Event messages to the receiver PMF.
pause(2.1);
// Fail the Sender in our cluster
System.out.println("Sender pmf closed.");
pmSender.close();
pmfSender.close();
// Wait for a while, try again, this will let close exception propagate
pause(4.1);
System.out.println("Waited for a while.");
System.out.println("Recovering the sender pmf.");
pmfSender = createDistinctFactory(
TCPRemoteCommitProvider.class,
"Port=5637, Addresses=127.0.0.1:5637;127.0.0.1:6637");
pmSender = pmfSender.createEntityManager();
// Perform a second set of transactions. Events in the cluster will be
// communicated
performAddsModifiesDeletes(pmSender, NUM_OBJECTS);
// Wait for a bit so the listener thread in the receiver PMF can get all
// messages.
pause(4.1);
assertEquals(2 * NUM_OBJECTS, listenerAtReceiver.totalAdded);
assertEquals(2 * NUM_OBJECTS, listenerAtReceiver.totalDeleted);
assertEquals(2 * NUM_OBJECTS, listenerAtReceiver.totalUpdated);
// shutdown
pmSender.close();
pmfSender.close();
pmfReceiver.close();
}
protected double performAddsModifiesDeletes(EntityManager pm,
int numObjects) {
// Perform a series of transactions that will trigger adds,
// deletes, and udpates
Duration timeToAMD = new Duration(
"Adds, removes, and dletes for " + numObjects + " objects.");
timeToAMD.start();
// create objects
RuntimeTest1[] persistables = new RuntimeTest1[numObjects];
for (int i = 0; i < persistables.length; i++) {
persistables[i] = new RuntimeTest1("foo #" + i, i);
}
// add them
for (int i = 0; i < persistables.length; i++) {
startTx(pm);
pm.persist(persistables[i]);
endTx(pm);
}
// modify them
startTx(pm);
for (int i = 0; i < persistables.length; i++) {
persistables[i].setStringField("bazzed" + i);
}
endTx(pm);
// delete them
startTx(pm);
for (int i = 0; i < persistables.length; i++) {
pm.remove(persistables[i]);
}
endTx(pm);
timeToAMD.stop();
return timeToAMD.getDurationAsSeconds();
}
static int _fetchGroupSerial = 0;
protected OpenJPAEntityManagerFactory createDistinctFactory(
Class providerClass, String classProps1) {
String transmit = "TransmitPersistedObjectIds=true";
if (classProps1 == null || classProps1.length() == 0)
classProps1 = transmit;
else
classProps1 += "," + transmit;
Map propsMap;
if (providerClass != null) {
propsMap = new HashMap();
propsMap.put("openjpa.RemoteCommitProvider", Configurations.
getPlugin(providerClass.getName(), classProps1));
propsMap.put("openjpa.FetchGroups", "differentiatingFetchGroup" +
_fetchGroupSerial);
} else {
// No RCP
propsMap = new HashMap();
propsMap.put("openjpa.RemoteCommitProvider",
"sjvm(TransmitPersistedObjectIds=true)");
propsMap.put("openjpa.FetchGroups", "differentiatingFetchGroup" +
_fetchGroupSerial);
}
_fetchGroupSerial += 1;
return getEmf(propsMap);
}
protected static class RemoteCommitListenerTestImpl
implements RemoteCommitListener {
Collection added;
Collection updated;
Collection deleted;
int totalAdded;
int totalUpdated;
int totalDeleted;
public synchronized void afterCommit(RemoteCommitEvent event) {
this.added = event.getPersistedObjectIds();
this.updated = event.getUpdatedObjectIds();
this.deleted = event.getDeletedObjectIds();
totalAdded += added.size();
totalUpdated += updated.size();
totalDeleted += deleted.size();
}
public void close() {
}
public String toString() {
String returnString = "Adds " + totalAdded + " Dels " +
totalDeleted + " Ups " + totalUpdated;
return returnString;
}
}
}