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https://issues.apache.org/jira/browse/AMQ-3706 - balance randomize with cluster update 

git-svn-id: https://svn.apache.org/repos/asf/activemq/trunk@1242748 13f79535-47bb-0310-9956-ffa450edef68
This commit is contained in:
Bosanac Dejan 2012-02-10 11:48:56 +00:00
parent 2cb8ed221b
commit beda82ad5a
4 changed files with 236 additions and 73 deletions
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33
activemq-core/src/main/java/org/apache/activemq/broker/TransportConnector.java
View File

@ -39,7 +39,10 @@ import javax.management.ObjectName;
import java.io.IOException;
import java.net.URI;
import java.net.URISyntaxException;
import java.util.ArrayList;
import java.util.Collections;
import java.util.Iterator;
import java.util.Random;
import java.util.StringTokenizer;
import java.util.concurrent.CopyOnWriteArrayList;
import java.util.regex.Pattern;
@ -74,6 +77,8 @@ public class TransportConnector implements Connector, BrokerServiceAware {
private String updateClusterFilter;
private boolean auditNetworkProducers = false;
Random rnd = new Random(System.currentTimeMillis());
public TransportConnector() {
}
@ -401,29 +406,24 @@ public class TransportConnector implements Connector, BrokerServiceAware {
protected ConnectionControl getConnectionControl() {
boolean rebalance = isRebalanceClusterClients();
String connectedBrokers = "";
String self = "";
String separator = "";
if (isUpdateClusterClients()) {
if (brokerService.getDefaultSocketURIString() != null) {
self += brokerService.getDefaultSocketURIString();
}
if (rebalance == false) {
connectedBrokers += self;
separator = ",";
}
if (this.broker.getPeerBrokerInfos() != null) {
for (BrokerInfo info : this.broker.getPeerBrokerInfos()) {
ArrayList<String> uris = new ArrayList<String>();
uris.add(brokerService.getDefaultSocketURIString());
for (BrokerInfo info: broker.getPeerBrokerInfos()) {
if (isMatchesClusterFilter(info.getBrokerName())) {
connectedBrokers += separator;
connectedBrokers += info.getBrokerURL();
separator = ",";
}
uris.add(info.getBrokerURL());
}
}
if (rebalance) {
connectedBrokers += separator + self;
Collections.shuffle(uris, rnd);
}
for (String uri: uris) {
connectedBrokers += separator + uri;
separator = ",";
}
}
ConnectionControl control = new ConnectionControl();
control.setConnectedBrokers(connectedBrokers);
@ -437,6 +437,9 @@ public class TransportConnector implements Connector, BrokerServiceAware {
ConnectionControl control = getConnectionControl();
for (Connection c : this.connections) {
c.updateClient(control);
if (isRebalanceClusterClients()) {
control = getConnectionControl();
}
}
}
}

19
activemq-core/src/main/java/org/apache/activemq/transport/failover/FailoverTransport.java
View File

@ -50,6 +50,7 @@ import java.net.URI;
import java.net.URL;
import java.util.ArrayList;
import java.util.Collections;
import java.util.HashSet;
import java.util.Iterator;
import java.util.LinkedHashMap;
import java.util.List;
@ -704,12 +705,16 @@ public class FailoverTransport implements CompositeTransport {
}
private List<URI> getConnectList() {
if (!updated.isEmpty()) {
if (failedConnectTransportURI != null) {
boolean removed = updated.remove(failedConnectTransportURI);
if (removed) {
updated.add(failedConnectTransportURI);
}
}
return updated;
}
ArrayList<URI> l = new ArrayList<URI>(uris);
for (URI uri : updated) {
if (!l.contains(uri)) {
l.add(uri);
}
}
boolean removed = false;
if (failedConnectTransportURI != null) {
removed = l.remove(failedConnectTransportURI);
@ -1167,7 +1172,7 @@ public class FailoverTransport implements CompositeTransport {
public void updateURIs(boolean rebalance, URI[] updatedURIs) throws IOException {
if (isUpdateURIsSupported()) {
List<URI> copy = new ArrayList<URI>(this.updated);
HashSet<URI> copy = new HashSet<URI>(this.updated);
updated.clear();
if (updatedURIs != null && updatedURIs.length > 0) {
for (URI uri : updatedURIs) {
@ -1175,7 +1180,7 @@ public class FailoverTransport implements CompositeTransport {
updated.add(uri);
}
}
if (!(copy.isEmpty() && updated.isEmpty()) && !copy.equals(updated)) {
if (!(copy.isEmpty() && updated.isEmpty()) && !copy.equals(new HashSet(updated))) {
buildBackups();
synchronized (reconnectMutex) {
reconnect(rebalance);

37
activemq-core/src/test/java/org/apache/activemq/transport/failover/FailoverClusterTestSupport.java
View File

@ -50,8 +50,10 @@ public class FailoverClusterTestSupport extends TestCase {
protected void assertClientsConnectedToTwoBrokers() {
Set<String> set = new HashSet<String>();
for (ActiveMQConnection c : connections) {
if (c.getTransportChannel().getRemoteAddress() != null) {
set.add(c.getTransportChannel().getRemoteAddress());
}
}
assertTrue("Only 2 connections should be found: " + set,
set.size() == 2);
}
@ -59,12 +61,41 @@ public class FailoverClusterTestSupport extends TestCase {
protected void assertClientsConnectedToThreeBrokers() {
Set<String> set = new HashSet<String>();
for (ActiveMQConnection c : connections) {
if (c.getTransportChannel().getRemoteAddress() != null) {
set.add(c.getTransportChannel().getRemoteAddress());
}
}
assertTrue("Only 3 connections should be found: " + set,
set.size() == 3);
}
protected void assertClientsConnectionsEvenlyDistributed(double minimumPercentage) {
Map<String, Double> clientConnectionCounts = new HashMap<String, Double>();
int total = 0;
for (ActiveMQConnection c : connections) {
String key = c.getTransportChannel().getRemoteAddress();
if (key != null) {
total++;
if (clientConnectionCounts.containsKey(key)) {
double count = clientConnectionCounts.get(key);
count += 1.0;
clientConnectionCounts.put(key, count);
} else {
clientConnectionCounts.put(key, 1.0);
}
}
}
Set<String> keys = clientConnectionCounts.keySet();
for(String key: keys){
double count = (double)clientConnectionCounts.get(key);
double percentage = count / (double)total;
logger.info(count + " of " + total + " connections for " + key + " = " + percentage);
assertTrue("Connections distribution expected to be >= than " + minimumPercentage
+ ". Actuall distribution was " + percentage + " for connection " + key,
percentage >= minimumPercentage);
}
}
protected void assertAllConnectedTo(String url) throws Exception {
for (ActiveMQConnection c : connections) {
assertEquals(c.getTransportChannel().getRemoteAddress(), url);
@ -92,6 +123,7 @@ public class FailoverClusterTestSupport extends TestCase {
protected void destroyBrokerCluster() throws JMSException, Exception {
for (BrokerService b : brokers.values()) {
b.stop();
b.waitUntilStopped();
}
brokers.clear();
}
@ -142,10 +174,11 @@ public class FailoverClusterTestSupport extends TestCase {
createClients(NUMBER_OF_CLIENTS);
}
protected void createClients(int num) throws Exception {
@SuppressWarnings("unused")
protected void createClients(int numOfClients) throws Exception {
ActiveMQConnectionFactory factory = new ActiveMQConnectionFactory(
clientUrl);
for (int i = 0; i < num; i++) {
for (int i = 0; i < numOfClients; i++) {
ActiveMQConnection c = (ActiveMQConnection) factory
.createConnection();
c.start();

190
activemq-core/src/test/java/org/apache/activemq/transport/failover/FailoverComplexClusterTest.java
View File

@ -16,6 +16,7 @@
*/
package org.apache.activemq.transport.failover;
/**
* Complex cluster test that will exercise the dynamic failover capabilities of
* a network of brokers. Using a networking of 3 brokers where the 3rd broker is
@ -37,9 +38,14 @@ public class FailoverComplexClusterTest extends FailoverClusterTestSupport {
/**
* Basic dynamic failover 3 broker test
*
* @throws Exception
*/
public void testThreeBrokerClusterSingleConnectorBasic() throws Exception {
initSingleTcBroker("", null);
initSingleTcBroker("", null, null);
Thread.sleep(2000);
@ -47,36 +53,73 @@ public class FailoverComplexClusterTest extends FailoverClusterTestSupport {
createClients();
Thread.sleep(2000);
runTests(false);
runTests(false, null, null, null);
}
/**
* Tests a 3 broker configuration to ensure that the backup is random and
* supported in a cluster. useExponentialBackOff is set to false and
* maxReconnectAttempts is set to 1 to move through the list quickly for
* this test.
*
* @throws Exception
*/
public void testThreeBrokerClusterSingleConnectorBackupFailoverConfig() throws Exception {
public void testThreeBrokerClusterSingleConnectorBackup() throws Exception {
initSingleTcBroker("", null);
initSingleTcBroker("", null, null);
Thread.sleep(2000);
setClientUrl("failover://(" + BROKER_A_CLIENT_TC_ADDRESS + "," + BROKER_B_CLIENT_TC_ADDRESS + ")?backup=true&backupPoolSize=2");
setClientUrl("failover://(" + BROKER_A_CLIENT_TC_ADDRESS + "," + BROKER_B_CLIENT_TC_ADDRESS + ")?backup=true&backupPoolSize=2&useExponentialBackOff=false&initialReconnectDelay=500");
createClients();
Thread.sleep(2000);
runTests(false);
runTests(false, null, null, null);
}
/**
* Tests a 3 broker cluster that passes in connection params on the
* transport connector. Prior versions of AMQ passed the TC connection
* params to the client and this should not happen. The chosen param is not
* compatible with the client and will throw an error if used.
*
* @throws Exception
*/
public void testThreeBrokerClusterSingleConnectorWithParams() throws Exception {
initSingleTcBroker("?transport.closeAsync=false", null);
initSingleTcBroker("?transport.closeAsync=false", null, null);
Thread.sleep(2000);
setClientUrl("failover://(" + BROKER_A_CLIENT_TC_ADDRESS + "," + BROKER_B_CLIENT_TC_ADDRESS + ")");
createClients();
Thread.sleep(2000);
runTests(false);
runTests(false, null, null, null);
}
/**
* Tests a 3 broker cluster using a cluster filter of *
*
* @throws Exception
*/
public void testThreeBrokerClusterWithClusterFilter() throws Exception {
initSingleTcBroker("?transport.closeAsync=false", null, null);
Thread.sleep(2000);
setClientUrl("failover://(" + BROKER_A_CLIENT_TC_ADDRESS + "," + BROKER_B_CLIENT_TC_ADDRESS + ")");
createClients();
runTests(false, null, "*", null);
}
/**
* Test to verify that a broker with multiple transport connections only the
* one marked to update clients is propagate
*
* @throws Exception
*/
public void testThreeBrokerClusterMultipleConnectorBasic() throws Exception {
initMultiTcCluster("", null);
@ -87,11 +130,16 @@ public class FailoverComplexClusterTest extends FailoverClusterTestSupport {
createClients();
Thread.sleep(2000);
runTests(true);
runTests(true, null, null, null);
}
/**
* Test to verify the reintroduction of the A Broker
*
* @throws Exception
*/
public void testOriginalBrokerRestart() throws Exception {
initSingleTcBroker("", null);
initSingleTcBroker("", null, null);
Thread.sleep(2000);
@ -109,25 +157,66 @@ public class FailoverComplexClusterTest extends FailoverClusterTestSupport {
assertClientsConnectedToTwoBrokers();
createBrokerA(false, "", null);
createBrokerA(false, null, null, null);
getBroker(BROKER_A_NAME).waitUntilStarted();
Thread.sleep(5000);
assertClientsConnectedToThreeBrokers();
}
/**
* Test to ensure clients are evenly to all available brokers in the
* network.
*
* @throws Exception
*/
public void testThreeBrokerClusterClientDistributions() throws Exception {
initSingleTcBroker("", null, null);
Thread.sleep(2000);
setClientUrl("failover://(" + BROKER_A_CLIENT_TC_ADDRESS + "," + BROKER_B_CLIENT_TC_ADDRESS + ")?useExponentialBackOff=false&initialReconnectDelay=500");
createClients(100);
Thread.sleep(5000);
runClientDistributionTests(false, null, null, null);
}
/**
* Runs a 3 tests: <br/>
* Test to verify that clients are distributed with no less than 20% of the
* clients on any one broker.
*
* @throws Exception
*/
public void testThreeBrokerClusterDestinationFilter() throws Exception {
initSingleTcBroker("", null, null);
Thread.sleep(2000);
setClientUrl("failover://(" + BROKER_A_CLIENT_TC_ADDRESS + "," + BROKER_B_CLIENT_TC_ADDRESS + ")");
createClients();
runTests(false, null, null, "Queue.TEST.FOO.>");
}
/**
* Runs a 3 Broker dynamic failover test: <br/>
* <ul>
* <li>asserts clients are distributed across all 3 brokers</li>
* <li>asserts clients are distributed across 2 brokers after removing the 3rd</li>
* <li>asserts clients are distributed across all 3 brokers after reintroducing the 3rd broker</li>
* <li>asserts clients are distributed across all 3 brokers after
* reintroducing the 3rd broker</li>
* </ul>
*
* @param multi
* @param tcParams
* @param clusterFilter
* @param destinationFilter
* @throws Exception
* @throws InterruptedException
*/
private void runTests(boolean multi) throws Exception, InterruptedException {
private void runTests(boolean multi, String tcParams, String clusterFilter, String destinationFilter) throws Exception, InterruptedException {
assertClientsConnectedToThreeBrokers();
getBroker(BROKER_C_NAME).stop();
@ -138,13 +227,43 @@ public class FailoverComplexClusterTest extends FailoverClusterTestSupport {
assertClientsConnectedToTwoBrokers();
createBrokerC(multi, "", null);
createBrokerC(multi, tcParams, clusterFilter, destinationFilter);
getBroker(BROKER_C_NAME).waitUntilStarted();
Thread.sleep(5000);
assertClientsConnectedToThreeBrokers();
}
/**
* @param multi
* @param tcParams
* @param clusterFilter
* @param destinationFilter
* @throws Exception
* @throws InterruptedException
*/
private void runClientDistributionTests(boolean multi, String tcParams, String clusterFilter, String destinationFilter) throws Exception, InterruptedException {
assertClientsConnectedToThreeBrokers();
assertClientsConnectionsEvenlyDistributed(.25);
getBroker(BROKER_C_NAME).stop();
getBroker(BROKER_C_NAME).waitUntilStopped();
removeBroker(BROKER_C_NAME);
Thread.sleep(5000);
assertClientsConnectedToTwoBrokers();
assertClientsConnectionsEvenlyDistributed(.35);
createBrokerC(multi, tcParams, clusterFilter, destinationFilter);
getBroker(BROKER_C_NAME).waitUntilStarted();
Thread.sleep(5000);
assertClientsConnectedToThreeBrokers();
assertClientsConnectionsEvenlyDistributed(.20);
}
@Override
protected void setUp() throws Exception {
}
@ -152,30 +271,31 @@ public class FailoverComplexClusterTest extends FailoverClusterTestSupport {
@Override
protected void tearDown() throws Exception {
shutdownClients();
destroyBrokerCluster();
Thread.sleep(2000);
destroyBrokerCluster();
}
private void initSingleTcBroker(String params, String clusterFilter) throws Exception {
createBrokerA(false, params, clusterFilter);
createBrokerB(false, params, clusterFilter);
createBrokerC(false, params, clusterFilter);
private void initSingleTcBroker(String params, String clusterFilter, String destinationFilter) throws Exception {
createBrokerA(false, params, clusterFilter, null);
createBrokerB(false, params, clusterFilter, null);
createBrokerC(false, params, clusterFilter, null);
getBroker(BROKER_C_NAME).waitUntilStarted();
}
private void initMultiTcCluster(String params, String clusterFilter) throws Exception {
createBrokerA(true, params, clusterFilter);
createBrokerB(true, params, clusterFilter);
createBrokerC(true, params, clusterFilter);
createBrokerA(true, params, clusterFilter, null);
createBrokerB(true, params, clusterFilter, null);
createBrokerC(true, params, clusterFilter, null);
getBroker(BROKER_C_NAME).waitUntilStarted();
}
private void createBrokerA(boolean multi, String params, String clusterFilter) throws Exception {
private void createBrokerA(boolean multi, String params, String clusterFilter, String destinationFilter) throws Exception {
final String tcParams = (params == null)?"":params;
if (getBroker(BROKER_A_NAME) == null) {
addBroker(BROKER_A_NAME, createBroker(BROKER_A_NAME));
addTransportConnector(getBroker(BROKER_A_NAME), "openwire", BROKER_A_CLIENT_TC_ADDRESS + params, true);
addTransportConnector(getBroker(BROKER_A_NAME), "openwire", BROKER_A_CLIENT_TC_ADDRESS + tcParams, true);
if (multi) {
addTransportConnector(getBroker(BROKER_A_NAME), "network", BROKER_A_NOB_TC_ADDRESS, false);
addTransportConnector(getBroker(BROKER_A_NAME), "network", BROKER_A_NOB_TC_ADDRESS + tcParams, false);
addNetworkBridge(getBroker(BROKER_A_NAME), "A_2_B_Bridge", "static://(" + BROKER_B_NOB_TC_ADDRESS + ")?useExponentialBackOff=false", false, clusterFilter);
addNetworkBridge(getBroker(BROKER_A_NAME), "A_2_C_Bridge", "static://(" + BROKER_C_NOB_TC_ADDRESS + ")?useExponentialBackOff=false", false, null);
} else {
@ -186,12 +306,13 @@ public class FailoverComplexClusterTest extends FailoverClusterTestSupport {
}
}
private void createBrokerB(boolean multi, String params, String clusterFilter) throws Exception {
private void createBrokerB(boolean multi, String params, String clusterFilter, String destinationFilter) throws Exception {
final String tcParams = (params == null)?"":params;
if (getBroker(BROKER_B_NAME) == null) {
addBroker(BROKER_B_NAME, createBroker(BROKER_B_NAME));
addTransportConnector(getBroker(BROKER_B_NAME), "openwire", BROKER_B_CLIENT_TC_ADDRESS + params, true);
addTransportConnector(getBroker(BROKER_B_NAME), "openwire", BROKER_B_CLIENT_TC_ADDRESS + tcParams, true);
if (multi) {
addTransportConnector(getBroker(BROKER_B_NAME), "network", BROKER_B_NOB_TC_ADDRESS, false);
addTransportConnector(getBroker(BROKER_B_NAME), "network", BROKER_B_NOB_TC_ADDRESS + tcParams, false);
addNetworkBridge(getBroker(BROKER_B_NAME), "B_2_A_Bridge", "static://(" + BROKER_A_NOB_TC_ADDRESS + ")?useExponentialBackOff=false", false, clusterFilter);
addNetworkBridge(getBroker(BROKER_B_NAME), "B_2_C_Bridge", "static://(" + BROKER_C_NOB_TC_ADDRESS + ")?useExponentialBackOff=false", false, null);
} else {
@ -202,12 +323,13 @@ public class FailoverComplexClusterTest extends FailoverClusterTestSupport {
}
}
private void createBrokerC(boolean multi, String params, String clusterFilter) throws Exception {
private void createBrokerC(boolean multi, String params, String clusterFilter, String destinationFilter) throws Exception {
final String tcParams = (params == null)?"":params;
if (getBroker(BROKER_C_NAME) == null) {
addBroker(BROKER_C_NAME, createBroker(BROKER_C_NAME));
addTransportConnector(getBroker(BROKER_C_NAME), "openwire", BROKER_C_CLIENT_TC_ADDRESS + params, true);
addTransportConnector(getBroker(BROKER_C_NAME), "openwire", BROKER_C_CLIENT_TC_ADDRESS + tcParams, true);
if (multi) {
addTransportConnector(getBroker(BROKER_C_NAME), "network", BROKER_C_NOB_TC_ADDRESS, false);
addTransportConnector(getBroker(BROKER_C_NAME), "network", BROKER_C_NOB_TC_ADDRESS + tcParams, false);
addNetworkBridge(getBroker(BROKER_C_NAME), "C_2_A_Bridge", "static://(" + BROKER_A_NOB_TC_ADDRESS + ")?useExponentialBackOff=false", false, clusterFilter);
addNetworkBridge(getBroker(BROKER_C_NAME), "C_2_B_Bridge", "static://(" + BROKER_B_NOB_TC_ADDRESS + ")?useExponentialBackOff=false", false, null);
} else {