| sdk/src/org/opends/sdk/AbstractLoadBalancingAlgorithm.java | ●●●●● patch | view | raw | blame | history | |
| sdk/src/org/opends/sdk/Connections.java | ●●●●● patch | view | raw | blame | history | |
| sdk/src/org/opends/sdk/FailoverLoadBalancingAlgorithm.java | ●●●●● patch | view | raw | blame | history | |
| sdk/src/org/opends/sdk/LoadBalancingAlgorithm.java | ●●●●● patch | view | raw | blame | history | |
| sdk/src/org/opends/sdk/LoadBalancingConnectionFactory.java | ●●●●● patch | view | raw | blame | history |
sdk/src/org/opends/sdk/AbstractLoadBalancingAlgorithm.java
File was deleted sdk/src/org/opends/sdk/Connections.java
@@ -29,6 +29,7 @@ import java.util.Collection; import java.util.concurrent.TimeUnit; import org.opends.sdk.requests.BindRequest; @@ -44,14 +45,6 @@ */ public final class Connections { // Prevent instantiation. private Connections() { // Do nothing. } /** * Creates a new authenticated connection factory which will obtain * connections using the provided connection factory and immediately @@ -113,18 +106,84 @@ /** * Creates a new heart-beat connection factory which will create * connections using the provided connection factory and periodically * ping any created connections in order to detect that they are still * alive. * Creates a new connection factory providing fault tolerance across * multiple underlying connection factories. * <p> * The returned fail-over connection factory forwards connection * requests to one of the provided connection factories. If the * request fails for some reason (for example, due to network * failure), then the fail-over connection factory switches to another * connection faction, repeating the process until the connection * request succeeds, or until all the connection factories are * determined to be unavailable, in which case the connection request * will fail. * <p> * The implementation periodically attempts to connect to failed * connection factories in order to determine if they have become * available again. * * @param factories * The connection factories which will be used for fail-over. * @return The new fail-over connection factory. * @throws NullPointerException * If {@code factories} was {@code null}. */ public static ConnectionFactory newFailoverConnectionFactory( Collection<ConnectionFactory> factories) throws NullPointerException { FailoverLoadBalancingAlgorithm algorithm = new FailoverLoadBalancingAlgorithm( factories); return new LoadBalancingConnectionFactory(algorithm); } /** * Creates a new connection factory providing fault tolerance across * multiple underlying connection factories. * <p> * The returned fail-over connection factory forwards connection * requests to one of the provided connection factories. If the * request fails for some reason (for example, due to network * failure), then the fail-over connection factory switches to another * connection faction, repeating the process until the connection * request succeeds, or until all the connection factories are * determined to be unavailable, in which case the connection request * will fail. * <p> * The implementation periodically attempts to connect to failed * connection factories in order to determine if they have become * available again. * * @param factories * The connection factories which will be used for fail-over. * @return The new fail-over connection factory. * @throws NullPointerException * If {@code factories} was {@code null}. */ public static ConnectionFactory newFailoverConnectionFactory( ConnectionFactory... factories) throws NullPointerException { FailoverLoadBalancingAlgorithm algorithm = new FailoverLoadBalancingAlgorithm( factories); return new LoadBalancingConnectionFactory(algorithm); } /** * Creates a new connection factory which will create connections * using the provided connection factory and periodically probe any * created connections in order to detect that they are still alive. * * @param factory * The connection factory to use for creating connections. * @param timeout * The time to wait between keepalive pings. * The time to wait between keep-alive probes. * @param unit * The time unit of the timeout argument. * @return The heart-beat connection factory. * @return The new heart-beat connection factory. * @throws IllegalArgumentException * If {@code timeout} was negative. * @throws NullPointerException @@ -143,20 +202,20 @@ /** * Creates a new heart-beat connection factory which will create * connections using the provided connection factory and periodically * ping any created connections using the specified search request in * order to detect that they are still alive. * Creates a new connection factory which will create connections * using the provided connection factory and periodically probe any * created connections using the specified search request in order to * detect that they are still alive. * * @param factory * The connection factory to use for creating connections. * @param timeout * The time to wait between keepalive pings. * The time to wait between keep-alive probes. * @param unit * The time unit of the timeout argument. * @param heartBeat * The search request to use when pinging connections. * @return The heart-beat connection factory. * @return The new heart-beat connection factory. * @throws IllegalArgumentException * If {@code timeout} was negative. * @throws NullPointerException @@ -175,4 +234,11 @@ heartBeat); } // Prevent instantiation. private Connections() { // Do nothing. } } sdk/src/org/opends/sdk/FailoverLoadBalancingAlgorithm.java
@@ -1,29 +1,258 @@ /* * CDDL HEADER START * * The contents of this file are subject to the terms of the * Common Development and Distribution License, Version 1.0 only * (the "License"). You may not use this file except in compliance * with the License. * * You can obtain a copy of the license at * trunk/opends/resource/legal-notices/OpenDS.LICENSE * or https://OpenDS.dev.java.net/OpenDS.LICENSE. * See the License for the specific language governing permissions * and limitations under the License. * * When distributing Covered Code, include this CDDL HEADER in each * file and include the License file at * trunk/opends/resource/legal-notices/OpenDS.LICENSE. If applicable, * add the following below this CDDL HEADER, with the fields enclosed * by brackets "[]" replaced with your own identifying information: * Portions Copyright [yyyy] [name of copyright owner] * * CDDL HEADER END * * * Copyright 2010 Sun Microsystems, Inc. */ package org.opends.sdk; import java.util.ArrayList; import java.util.Collection; import java.util.List; import java.util.logging.Level; import org.opends.sdk.responses.Responses; import com.sun.opends.sdk.util.StaticUtils; import com.sun.opends.sdk.util.Validator; /** * Created by IntelliJ IDEA. User: digitalperk Date: Dec 15, 2009 Time: * 5:42:01 PM To change this template use File | Settings | File * Templates. * A fail-over load balancing algorithm provides fault tolerance across * multiple underlying connection factories. * <p> * If a problem occurs that temporarily prevents connections from being * obtained for one of the connection factories, then this algorithm * "fails over" to another operational connection factory in the list. * If none of the connection factories are operational then a {@code * ConnectionException} is returned to the client. * <p> * The implementation periodically attempts to connect to failed * connection factories in order to determine if they have become * available again. */ public class FailoverLoadBalancingAlgorithm extends AbstractLoadBalancingAlgorithm class FailoverLoadBalancingAlgorithm implements LoadBalancingAlgorithm { private final List<MonitoredConnectionFactory> monitoredFactories; private static final class MonitoredConnectionFactory extends AbstractConnectionFactory implements ResultHandler<AsynchronousConnection> { private final ConnectionFactory factory; private volatile boolean isOperational; private volatile FutureResult<?> pendingConnectFuture; private MonitoredConnectionFactory(ConnectionFactory factory) { this.factory = factory; this.isOperational = true; } private boolean isOperational() { return isOperational; } public void handleErrorResult(ErrorResultException error) { isOperational = false; } public void handleResult(AsynchronousConnection result) { isOperational = true; // TODO: Notify the server is back up result.close(); } public FutureResult<AsynchronousConnection> getAsynchronousConnection( final ResultHandler<AsynchronousConnection> resultHandler) { ResultHandler<AsynchronousConnection> handler = new ResultHandler<AsynchronousConnection>() { public void handleErrorResult(ErrorResultException error) { isOperational = false; if (resultHandler != null) { resultHandler.handleErrorResult(error); } if (StaticUtils.DEBUG_LOG.isLoggable(Level.WARNING)) { StaticUtils.DEBUG_LOG.warning(String .format("Connection factory " + factory + " is no longer operational: " + error.getMessage())); } } public void handleResult(AsynchronousConnection result) { isOperational = true; if (resultHandler != null) { resultHandler.handleResult(result); } if (StaticUtils.DEBUG_LOG.isLoggable(Level.WARNING)) { StaticUtils.DEBUG_LOG.warning(String .format("Connection factory " + factory + " is now operational")); } } }; return factory.getAsynchronousConnection(handler); } } private class MonitorThread extends Thread { private MonitorThread() { super("Connection Factory Health Monitor"); this.setDaemon(true); } public void run() { while (true) { for (MonitoredConnectionFactory f : monitoredFactories) { if (!f.isOperational && (f.pendingConnectFuture == null || f.pendingConnectFuture .isDone())) { if (StaticUtils.DEBUG_LOG.isLoggable(Level.FINEST)) { StaticUtils.DEBUG_LOG.finest(String .format("Attempting connect on factory " + f)); } f.pendingConnectFuture = f.factory .getAsynchronousConnection(f); } } try { sleep(10000); } catch (InterruptedException e) { // Termination requested - exit. break; } } } } /** * Creates a new fail-over load balancing algorithm which will * fail-over across the provided list of connection factories. * * @param factories * The connection factories which will be used for fail-over. */ public FailoverLoadBalancingAlgorithm(ConnectionFactory... factories) { super(factories); Validator.ensureNotNull((Object[]) factories); monitoredFactories = new ArrayList<MonitoredConnectionFactory>( factories.length); for (ConnectionFactory f : factories) { monitoredFactories.add(new MonitoredConnectionFactory(f)); } new MonitorThread().start(); } /** * Creates a new fail-over load balancing algorithm which will * fail-over across the provided collection of connection factories. * * @param factories * The connection factories which will be used for fail-over. */ public FailoverLoadBalancingAlgorithm( Collection<ConnectionFactory> factories) { Validator.ensureNotNull(factories); monitoredFactories = new ArrayList<MonitoredConnectionFactory>( factories.size()); for (ConnectionFactory f : factories) { monitoredFactories.add(new MonitoredConnectionFactory(f)); } new MonitorThread().start(); } public ConnectionFactory getNextConnectionFactory() throws ErrorResultException { for (MonitoredConnectionFactory f : factoryList) for (MonitoredConnectionFactory f : monitoredFactories) { if (f.isOperational()) { return f; } } return null; throw ErrorResultException.wrap(Responses.newResult( ResultCode.CLIENT_SIDE_CONNECT_ERROR).setDiagnosticMessage( "No operational connection factories available")); } } sdk/src/org/opends/sdk/LoadBalancingAlgorithm.java
@@ -1,11 +1,47 @@ /* * CDDL HEADER START * * The contents of this file are subject to the terms of the * Common Development and Distribution License, Version 1.0 only * (the "License"). You may not use this file except in compliance * with the License. * * You can obtain a copy of the license at * trunk/opends/resource/legal-notices/OpenDS.LICENSE * or https://OpenDS.dev.java.net/OpenDS.LICENSE. * See the License for the specific language governing permissions * and limitations under the License. * * When distributing Covered Code, include this CDDL HEADER in each * file and include the License file at * trunk/opends/resource/legal-notices/OpenDS.LICENSE. If applicable, * add the following below this CDDL HEADER, with the fields enclosed * by brackets "[]" replaced with your own identifying information: * Portions Copyright [yyyy] [name of copyright owner] * * CDDL HEADER END * * * Copyright 2010 Sun Microsystems, Inc. */ package org.opends.sdk; /** * Created by IntelliJ IDEA. User: digitalperk Date: Dec 15, 2009 Time: * 3:37:03 PM To change this template use File | Settings | File * Templates. * A load balancing algorithm distributes connection requests across one * or more underlying connection factories in an implementation defined * manner. */ public interface LoadBalancingAlgorithm interface LoadBalancingAlgorithm { public ConnectionFactory getNextConnectionFactory(); /** * Returns the next connection factory which should be used in order * to obtain a connection. * * @return The next connection factory. * @throws ErrorResultException * If no connection factories are available for use. */ ConnectionFactory getNextConnectionFactory() throws ErrorResultException; } sdk/src/org/opends/sdk/LoadBalancingConnectionFactory.java
@@ -1,20 +1,44 @@ /* * CDDL HEADER START * * The contents of this file are subject to the terms of the * Common Development and Distribution License, Version 1.0 only * (the "License"). You may not use this file except in compliance * with the License. * * You can obtain a copy of the license at * trunk/opends/resource/legal-notices/OpenDS.LICENSE * or https://OpenDS.dev.java.net/OpenDS.LICENSE. * See the License for the specific language governing permissions * and limitations under the License. * * When distributing Covered Code, include this CDDL HEADER in each * file and include the License file at * trunk/opends/resource/legal-notices/OpenDS.LICENSE. If applicable, * add the following below this CDDL HEADER, with the fields enclosed * by brackets "[]" replaced with your own identifying information: * Portions Copyright [yyyy] [name of copyright owner] * * CDDL HEADER END * * * Copyright 2010 Sun Microsystems, Inc. */ package org.opends.sdk; import com.sun.opends.sdk.util.Validator; import com.sun.opends.sdk.util.AbstractFutureResult; import org.opends.sdk.responses.Responses; import com.sun.opends.sdk.util.Validator; /** * Created by IntelliJ IDEA. User: digitalperk Date: Dec 15, 2009 Time: * 3:23:52 PM To change this template use File | Settings | File * Templates. * A load balancing connection factory allocates connections using the * provided algorithm. */ public class LoadBalancingConnectionFactory extends final class LoadBalancingConnectionFactory extends AbstractConnectionFactory { private final LoadBalancingAlgorithm algorithm; @@ -32,8 +56,13 @@ public FutureResult<AsynchronousConnection> getAsynchronousConnection( ResultHandler<AsynchronousConnection> resultHandler) { ConnectionFactory factory = algorithm.getNextConnectionFactory(); if (factory == null) ConnectionFactory factory; try { factory = algorithm.getNextConnectionFactory(); } catch (ErrorResultException e) { AbstractFutureResult<AsynchronousConnection> future = new AbstractFutureResult<AsynchronousConnection>( resultHandler) @@ -43,9 +72,8 @@ return -1; } }; future.handleErrorResult(new ErrorResultException(Responses .newResult(ResultCode.CLIENT_SIDE_CONNECT_ERROR) .setDiagnosticMessage("No connection factories available"))); future.handleErrorResult(e); return future; }