/*
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* CDDL HEADER START
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*
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* The contents of this file are subject to the terms of the
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* Common Development and Distribution License, Version 1.0 only
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* (the "License"). You may not use this file except in compliance
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* with the License.
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*
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* You can obtain a copy of the license at legal-notices/CDDLv1_0.txt
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* or http://forgerock.org/license/CDDLv1.0.html.
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* See the License for the specific language governing permissions
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* and limitations under the License.
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*
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* When distributing Covered Code, include this CDDL HEADER in each
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* file and include the License file at legal-notices/CDDLv1_0.txt.
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* If applicable, add the following below this CDDL HEADER, with the
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* fields enclosed by brackets "[]" replaced with your own identifying
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* information:
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* Portions Copyright [yyyy] [name of copyright owner]
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*
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* CDDL HEADER END
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*
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*
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* Copyright 2009-2010 Sun Microsystems, Inc.
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* Portions copyright 2011-2013 ForgeRock AS
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*/
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package org.forgerock.opendj.ldap;
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import static org.forgerock.opendj.ldap.RequestHandlerFactoryAdapter.adaptRequestHandler;
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import java.util.concurrent.ScheduledExecutorService;
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import java.util.concurrent.TimeUnit;
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import org.forgerock.opendj.ldap.requests.BindRequest;
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import org.forgerock.opendj.ldap.requests.SearchRequest;
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import com.forgerock.opendj.ldap.InternalConnection;
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import com.forgerock.opendj.util.Validator;
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/**
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* This class contains methods for creating and manipulating connection
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* factories and connections.
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*/
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public final class Connections {
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/**
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* Creates a new authenticated connection factory which will obtain
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* connections using the provided connection factory and immediately perform
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* the provided Bind request.
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* <p>
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* The connections returned by an authenticated connection factory support
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* all operations with the exception of Bind requests. Attempts to perform a
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* Bind will result in an {@code UnsupportedOperationException}.
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* <p>
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* If the Bind request fails for some reason (e.g. invalid credentials),
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* then the connection attempt will fail and an {@code ErrorResultException}
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* will be thrown.
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*
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* @param factory
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* The connection factory to use for connecting to the Directory
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* Server.
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* @param request
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* The Bind request to use for authentication.
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* @return The new connection pool.
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* @throws NullPointerException
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* If {@code factory} or {@code request} was {@code null}.
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*/
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public static ConnectionFactory newAuthenticatedConnectionFactory(
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final ConnectionFactory factory, final BindRequest request) {
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Validator.ensureNotNull(factory, request);
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return new AuthenticatedConnectionFactory(factory, request);
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}
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/**
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* Creates a new connection pool which creates new connections as needed
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* using the provided connection factory, but will reuse previously
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* allocated connections when they are available.
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* <p>
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* Connections which have not been used for sixty seconds are closed and
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* removed from the pool. Thus, a pool that remains idle for long enough
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* will not contain any cached connections.
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* <p>
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* Connections obtained from the connection pool are guaranteed to be valid
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* immediately before being returned to the calling application. More
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* specifically, connections which have remained idle in the connection pool
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* for a long time and which have been remotely closed due to a time out
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* will never be returned. However, once a pooled connection has been
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* obtained it is the responsibility of the calling application to handle
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* subsequent connection failures, these being signaled via a
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* {@link ConnectionException}.
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*
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* @param factory
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* The connection factory to use for creating new connections.
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* @return The new connection pool.
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* @throws NullPointerException
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* If {@code factory} was {@code null}.
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*/
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public static ConnectionPool newCachedConnectionPool(final ConnectionFactory factory) {
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return new CachedConnectionPool(factory, 0, Integer.MAX_VALUE, 60L, TimeUnit.SECONDS, null);
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}
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/**
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* Creates a new connection pool which creates new connections as needed
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* using the provided connection factory, but will reuse previously
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* allocated connections when they are available.
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* <p>
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* Attempts to use more than {@code maximumPoolSize} connections at once
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* will block until a connection is released back to the pool. In other
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* words, this pool will prevent applications from using more than
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* {@code maximumPoolSize} connections at the same time.
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* <p>
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* Connections which have not been used for the provided {@code idleTimeout}
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* period are closed and removed from the pool, until there are only
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* {@code corePoolSize} connections remaining.
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* <p>
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* Connections obtained from the connection pool are guaranteed to be valid
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* immediately before being returned to the calling application. More
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* specifically, connections which have remained idle in the connection pool
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* for a long time and which have been remotely closed due to a time out
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* will never be returned. However, once a pooled connection has been
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* obtained it is the responsibility of the calling application to handle
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* subsequent connection failures, these being signaled via a
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* {@link ConnectionException}.
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*
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* @param factory
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* The connection factory to use for creating new connections.
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* @param corePoolSize
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* The minimum number of connections to keep in the pool, even if
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* they are idle.
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* @param maximumPoolSize
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* The maximum number of connections to allow in the pool.
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* @param idleTimeout
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* The time out period, after which unused non-core connections
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* will be closed.
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* @param unit
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* The time unit for the {@code keepAliveTime} argument.
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* @return The new connection pool.
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* @throws IllegalArgumentException
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* If {@code corePoolSize}, {@code maximumPoolSize} are less
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* than or equal to zero, or if {@code idleTimeout} is negative,
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* or if {@code corePoolSize} is greater than
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* {@code maximumPoolSize}, or if {@code idleTimeout} is
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* non-zero and {@code unit} is {@code null}.
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* @throws NullPointerException
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* If {@code factory} was {@code null}.
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*/
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public static ConnectionPool newCachedConnectionPool(final ConnectionFactory factory,
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final int corePoolSize, final int maximumPoolSize, final long idleTimeout,
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final TimeUnit unit) {
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return new CachedConnectionPool(factory, corePoolSize, maximumPoolSize, idleTimeout, unit,
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null);
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}
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/**
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* Creates a new connection pool which creates new connections as needed
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* using the provided connection factory, but will reuse previously
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* allocated connections when they are available.
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* <p>
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* Attempts to use more than {@code maximumPoolSize} connections at once
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* will block until a connection is released back to the pool. In other
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* words, this pool will prevent applications from using more than
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* {@code maximumPoolSize} connections at the same time.
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* <p>
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* Connections which have not been used for the provided {@code idleTimeout}
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* period are closed and removed from the pool, until there are only
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* {@code corePoolSize} connections remaining.
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* <p>
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* Connections obtained from the connection pool are guaranteed to be valid
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* immediately before being returned to the calling application. More
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* specifically, connections which have remained idle in the connection pool
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* for a long time and which have been remotely closed due to a time out
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* will never be returned. However, once a pooled connection has been
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* obtained it is the responsibility of the calling application to handle
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* subsequent connection failures, these being signaled via a
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* {@link ConnectionException}.
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*
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* @param factory
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* The connection factory to use for creating new connections.
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* @param corePoolSize
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* The minimum number of connections to keep in the pool, even if
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* they are idle.
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* @param maximumPoolSize
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* The maximum number of connections to allow in the pool.
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* @param idleTimeout
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* The time out period, after which unused non-core connections
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* will be closed.
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* @param unit
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* The time unit for the {@code keepAliveTime} argument.
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* @param scheduler
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* The scheduler which should be used for periodically checking
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* for idle connections, or {@code null} if the default scheduler
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* should be used.
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* @return The new connection pool.
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* @throws IllegalArgumentException
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* If {@code corePoolSize}, {@code maximumPoolSize} are less
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* than or equal to zero, or if {@code idleTimeout} is negative,
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* or if {@code corePoolSize} is greater than
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* {@code maximumPoolSize}, or if {@code idleTimeout} is
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* non-zero and {@code unit} is {@code null}.
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* @throws NullPointerException
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* If {@code factory} was {@code null}.
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*/
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public static ConnectionPool newCachedConnectionPool(final ConnectionFactory factory,
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final int corePoolSize, final int maximumPoolSize, final long idleTimeout,
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final TimeUnit unit, final ScheduledExecutorService scheduler) {
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return new CachedConnectionPool(factory, corePoolSize, maximumPoolSize, idleTimeout, unit,
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scheduler);
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}
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/**
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* Creates a new connection pool which will maintain {@code poolSize}
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* connections created using the provided connection factory.
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* <p>
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* Attempts to use more than {@code poolSize} connections at once will block
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* until a connection is released back to the pool. In other words, this
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* pool will prevent applications from using more than {@code poolSize}
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* connections at the same time.
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* <p>
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* Connections obtained from the connection pool are guaranteed to be valid
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* immediately before being returned to the calling application. More
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* specifically, connections which have remained idle in the connection pool
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* for a long time and which have been remotely closed due to a time out
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* will never be returned. However, once a pooled connection has been
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* obtained it is the responsibility of the calling application to handle
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* subsequent connection failures, these being signaled via a
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* {@link ConnectionException}.
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*
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* @param factory
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* The connection factory to use for creating new connections.
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* @param poolSize
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* The maximum size of the connection pool.
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* @return The new connection pool.
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* @throws IllegalArgumentException
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* If {@code poolSize} is negative.
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* @throws NullPointerException
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* If {@code factory} was {@code null}.
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*/
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public static ConnectionPool newFixedConnectionPool(final ConnectionFactory factory,
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final int poolSize) {
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return new CachedConnectionPool(factory, poolSize, poolSize, 0L, null, null);
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}
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/**
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* Creates a new heart-beat connection factory which will create connections
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* using the provided connection factory and periodically ping any created
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* connections in order to detect that they are still alive every 10 seconds
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* using the default scheduler. Connections will be marked as having failed
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* if a heart-beat takes longer than 500ms.
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*
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* @param factory
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* The connection factory to use for creating connections.
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* @return The new heart-beat connection factory.
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* @throws NullPointerException
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* If {@code factory} was {@code null}.
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*/
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public static ConnectionFactory newHeartBeatConnectionFactory(final ConnectionFactory factory) {
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return new HeartBeatConnectionFactory(factory, 10000, 500, TimeUnit.MILLISECONDS, null,
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null);
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}
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/**
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* Creates a new heart-beat connection factory which will create connections
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* using the provided connection factory and periodically ping any created
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* connections in order to detect that they are still alive using the
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* specified frequency and the default scheduler.
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*
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* @param factory
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* The connection factory to use for creating connections.
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* @param interval
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* The interval between keepalive pings.
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* @param timeout
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* The heart-beat timeout after which a connection will be marked
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* as failed.
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* @param unit
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* The time unit for the interval between keepalive pings.
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* @return The new heart-beat connection factory.
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* @throws IllegalArgumentException
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* If {@code interval} was negative.
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* @throws NullPointerException
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* If {@code factory} or {@code unit} was {@code null}.
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*/
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public static ConnectionFactory newHeartBeatConnectionFactory(final ConnectionFactory factory,
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final long interval, final long timeout, final TimeUnit unit) {
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return new HeartBeatConnectionFactory(factory, interval, timeout, unit, null, null);
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}
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/**
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* Creates a new heart-beat connection factory which will create connections
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* using the provided connection factory and periodically ping any created
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* connections using the specified search request in order to detect that
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* they are still alive.
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*
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* @param factory
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* The connection factory to use for creating connections.
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* @param interval
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* The interval between keepalive pings.
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* @param timeout
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* The heart-beat timeout after which a connection will be marked
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* as failed.
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* @param unit
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* The time unit for the interval between keepalive pings.
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* @param heartBeat
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* The search request to use for keepalive pings.
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* @return The new heart-beat connection factory.
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* @throws IllegalArgumentException
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* If {@code interval} was negative.
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* @throws NullPointerException
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* If {@code factory}, {@code unit}, or {@code heartBeat} was
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* {@code null}.
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*/
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public static ConnectionFactory newHeartBeatConnectionFactory(final ConnectionFactory factory,
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final long interval, final long timeout, final TimeUnit unit,
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final SearchRequest heartBeat) {
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return new HeartBeatConnectionFactory(factory, interval, timeout, unit, heartBeat, null);
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}
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/**
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* Creates a new heart-beat connection factory which will create connections
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* using the provided connection factory and periodically ping any created
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* connections using the specified search request in order to detect that
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* they are still alive.
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*
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* @param factory
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* The connection factory to use for creating connections.
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* @param interval
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* The interval between keepalive pings.
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* @param timeout
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* The heart-beat timeout after which a connection will be marked
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* as failed.
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* @param unit
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* The time unit for the interval between keepalive pings.
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* @param heartBeat
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* The search request to use for keepalive pings.
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* @param scheduler
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* The scheduler which should for periodically sending keepalive
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* pings.
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* @return The new heart-beat connection factory.
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* @throws IllegalArgumentException
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* If {@code interval} was negative.
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* @throws NullPointerException
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* If {@code factory}, {@code unit}, or {@code heartBeat} was
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* {@code null}.
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*/
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public static ConnectionFactory newHeartBeatConnectionFactory(final ConnectionFactory factory,
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final long interval, final long timeout, final TimeUnit unit,
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final SearchRequest heartBeat, final ScheduledExecutorService scheduler) {
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return new HeartBeatConnectionFactory(factory, interval, timeout, unit, heartBeat,
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scheduler);
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}
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/**
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* Creates a new internal client connection which will route requests to the
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* provided {@code RequestHandler}.
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* <p>
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* When processing requests, {@code RequestHandler} implementations are
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* passed a {@code RequestContext} having a pseudo {@code requestID} which
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* is incremented for each successive internal request on a per client
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* connection basis. The request ID may be useful for logging purposes.
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* <p>
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* An internal connection does not require {@code RequestHandler}
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* implementations to return a result when processing requests. However, it
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* is recommended that implementations do always return results even for
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* abandoned requests. This is because application client threads may block
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* indefinitely waiting for results.
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*
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* @param requestHandler
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* The request handler which will be used for all client
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* connections.
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* @return The new internal connection.
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* @throws NullPointerException
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* If {@code requestHandler} was {@code null}.
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*/
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public static Connection newInternalConnection(
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final RequestHandler<RequestContext> requestHandler) {
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Validator.ensureNotNull(requestHandler);
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return newInternalConnection(adaptRequestHandler(requestHandler));
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}
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/**
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* Creates a new internal client connection which will route requests to the
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* provided {@code ServerConnection}.
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* <p>
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* When processing requests, {@code ServerConnection} implementations are
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* passed an integer as the first parameter. This integer represents a
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* pseudo {@code requestID} which is incremented for each successive
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* internal request on a per client connection basis. The request ID may be
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* useful for logging purposes.
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* <p>
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* An internal connection does not require {@code ServerConnection}
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* implementations to return a result when processing requests. However, it
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* is recommended that implementations do always return results even for
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* abandoned requests. This is because application client threads may block
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* indefinitely waiting for results.
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*
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* @param serverConnection
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* The server connection.
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* @return The new internal connection.
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* @throws NullPointerException
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* If {@code serverConnection} was {@code null}.
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*/
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public static Connection newInternalConnection(final ServerConnection<Integer> serverConnection) {
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Validator.ensureNotNull(serverConnection);
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return new InternalConnection(serverConnection);
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}
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/**
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* Creates a new connection factory which binds internal client connections
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* to the provided {@link RequestHandler}s.
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* <p>
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* When processing requests, {@code RequestHandler} implementations are
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* passed an integer as the first parameter. This integer represents a
|
* pseudo {@code requestID} which is incremented for each successive
|
* internal request on a per client connection basis. The request ID may be
|
* useful for logging purposes.
|
* <p>
|
* An internal connection factory does not require {@code RequestHandler}
|
* implementations to return a result when processing requests. However, it
|
* is recommended that implementations do always return results even for
|
* abandoned requests. This is because application client threads may block
|
* indefinitely waiting for results.
|
*
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* @param requestHandler
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* The request handler which will be used for all client
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* connections.
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* @return The new internal connection factory.
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* @throws NullPointerException
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* If {@code requestHandler} was {@code null}.
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*/
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public static ConnectionFactory newInternalConnectionFactory(
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final RequestHandler<RequestContext> requestHandler) {
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Validator.ensureNotNull(requestHandler);
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return new InternalConnectionFactory<Void>(Connections
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.<Void> newServerConnectionFactory(requestHandler), null);
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}
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/**
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* Creates a new connection factory which binds internal client connections
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* to {@link RequestHandler}s created using the provided
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* {@link RequestHandlerFactory}.
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* <p>
|
* When processing requests, {@code RequestHandler} implementations are
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* passed an integer as the first parameter. This integer represents a
|
* pseudo {@code requestID} which is incremented for each successive
|
* internal request on a per client connection basis. The request ID may be
|
* useful for logging purposes.
|
* <p>
|
* An internal connection factory does not require {@code RequestHandler}
|
* implementations to return a result when processing requests. However, it
|
* is recommended that implementations do always return results even for
|
* abandoned requests. This is because application client threads may block
|
* indefinitely waiting for results.
|
*
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* @param <C>
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* The type of client context.
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* @param factory
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* The request handler factory to use for creating connections.
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* @param clientContext
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* The client context.
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* @return The new internal connection factory.
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* @throws NullPointerException
|
* If {@code factory} was {@code null}.
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*/
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public static <C> ConnectionFactory newInternalConnectionFactory(
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final RequestHandlerFactory<C, RequestContext> factory, final C clientContext) {
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Validator.ensureNotNull(factory);
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return new InternalConnectionFactory<C>(newServerConnectionFactory(factory), clientContext);
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}
|
|
/**
|
* Creates a new connection factory which binds internal client connections
|
* to {@link ServerConnection}s created using the provided
|
* {@link ServerConnectionFactory}.
|
* <p>
|
* When processing requests, {@code ServerConnection} implementations are
|
* passed an integer as the first parameter. This integer represents a
|
* pseudo {@code requestID} which is incremented for each successive
|
* internal request on a per client connection basis. The request ID may be
|
* useful for logging purposes.
|
* <p>
|
* An internal connection factory does not require {@code ServerConnection}
|
* implementations to return a result when processing requests. However, it
|
* is recommended that implementations do always return results even for
|
* abandoned requests. This is because application client threads may block
|
* indefinitely waiting for results.
|
*
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* @param <C>
|
* The type of client context.
|
* @param factory
|
* The server connection factory to use for creating connections.
|
* @param clientContext
|
* The client context.
|
* @return The new internal connection factory.
|
* @throws NullPointerException
|
* If {@code factory} was {@code null}.
|
*/
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public static <C> ConnectionFactory newInternalConnectionFactory(
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final ServerConnectionFactory<C, Integer> factory, final C clientContext) {
|
Validator.ensureNotNull(factory);
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return new InternalConnectionFactory<C>(factory, clientContext);
|
}
|
|
/**
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* Creates a new load balancer which will obtain connections using the
|
* provided load balancing algorithm.
|
*
|
* @param algorithm
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* The load balancing algorithm which will be used to obtain the
|
* next
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* @return The new load balancer.
|
* @throws NullPointerException
|
* If {@code algorithm} was {@code null}.
|
*/
|
public static ConnectionFactory newLoadBalancer(final LoadBalancingAlgorithm algorithm) {
|
return new LoadBalancer(algorithm);
|
}
|
|
/**
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* Creates a new connection factory which forwards connection requests to
|
* the provided factory, but whose {@code toString} method will always
|
* return {@code name}.
|
* <p>
|
* This method may be useful for debugging purposes in order to more easily
|
* identity connection factories.
|
*
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* @param factory
|
* The connection factory to be named.
|
* @param name
|
* The name of the connection factory.
|
* @return The named connection factory.
|
* @throws NullPointerException
|
* If {@code factory} or {@code name} was {@code null}.
|
*/
|
public static ConnectionFactory newNamedConnectionFactory(final ConnectionFactory factory,
|
final String name) {
|
Validator.ensureNotNull(factory, name);
|
|
return new ConnectionFactory() {
|
|
@Override
|
public void close() {
|
factory.close();
|
}
|
|
@Override
|
public Connection getConnection() throws ErrorResultException {
|
return factory.getConnection();
|
}
|
|
@Override
|
public FutureResult<Connection> getConnectionAsync(
|
final ResultHandler<? super Connection> handler) {
|
return factory.getConnectionAsync(handler);
|
}
|
|
@Override
|
public String toString() {
|
return name;
|
}
|
|
};
|
}
|
|
/**
|
* Creates a new server connection factory using the provided
|
* {@link RequestHandler}. The returned factory will manage connection and
|
* request life-cycle, including request cancellation.
|
* <p>
|
* When processing requests, {@link RequestHandler} implementations are
|
* passed a {@link RequestContext} as the first parameter which may be used
|
* for detecting whether or not the request should be aborted due to
|
* cancellation requests or other events, such as connection failure.
|
* <p>
|
* The returned factory maintains state information which includes a table
|
* of active requests. Therefore, {@code RequestHandler} implementations are
|
* required to always return results in order to avoid potential memory
|
* leaks.
|
*
|
* @param <C>
|
* The type of client context.
|
* @param requestHandler
|
* The request handler which will be used for all client
|
* connections.
|
* @return The new server connection factory.
|
* @throws NullPointerException
|
* If {@code requestHandler} was {@code null}.
|
*/
|
public static <C> ServerConnectionFactory<C, Integer> newServerConnectionFactory(
|
final RequestHandler<RequestContext> requestHandler) {
|
Validator.ensureNotNull(requestHandler);
|
return new RequestHandlerFactoryAdapter<C>(new RequestHandlerFactory<C, RequestContext>() {
|
@Override
|
public RequestHandler<RequestContext> handleAccept(final C clientContext) {
|
return requestHandler;
|
}
|
});
|
}
|
|
/**
|
* Creates a new server connection factory using the provided
|
* {@link RequestHandlerFactory}. The returned factory will manage
|
* connection and request life-cycle, including request cancellation.
|
* <p>
|
* When processing requests, {@link RequestHandler} implementations are
|
* passed a {@link RequestContext} as the first parameter which may be used
|
* for detecting whether or not the request should be aborted due to
|
* cancellation requests or other events, such as connection failure.
|
* <p>
|
* The returned factory maintains state information which includes a table
|
* of active requests. Therefore, {@code RequestHandler} implementations are
|
* required to always return results in order to avoid potential memory
|
* leaks.
|
*
|
* @param <C>
|
* The type of client context.
|
* @param factory
|
* The request handler factory to use for associating request
|
* handlers with client connections.
|
* @return The new server connection factory.
|
* @throws NullPointerException
|
* If {@code factory} was {@code null}.
|
*/
|
public static <C> ServerConnectionFactory<C, Integer> newServerConnectionFactory(
|
final RequestHandlerFactory<C, RequestContext> factory) {
|
Validator.ensureNotNull(factory);
|
return new RequestHandlerFactoryAdapter<C>(factory);
|
}
|
|
/**
|
* Returns an uncloseable view of the provided connection. Attempts to call
|
* {@link Connection#close()} or
|
* {@link Connection#close(org.forgerock.opendj.ldap.requests.UnbindRequest, String)}
|
* will be ignored.
|
*
|
* @param connection
|
* The connection whose {@code close} methods are to be disabled.
|
* @return An uncloseable view of the provided connection.
|
*/
|
public static Connection uncloseable(Connection connection) {
|
return new AbstractConnectionWrapper<Connection>(connection) {
|
@Override
|
public void close() {
|
// Do nothing.
|
}
|
|
public void close(org.forgerock.opendj.ldap.requests.UnbindRequest request,
|
String reason) {
|
// Do nothing.
|
};
|
};
|
}
|
|
/**
|
* Returns an uncloseable view of the provided connection factory. Attempts
|
* to call {@link ConnectionFactory#close()} will be ignored.
|
*
|
* @param factory
|
* The connection factory whose {@code close} method is to be
|
* disabled.
|
* @return An uncloseable view of the provided connection factory.
|
*/
|
public static ConnectionFactory uncloseable(final ConnectionFactory factory) {
|
return new ConnectionFactory() {
|
|
@Override
|
public FutureResult<Connection> getConnectionAsync(
|
ResultHandler<? super Connection> handler) {
|
return factory.getConnectionAsync(handler);
|
}
|
|
@Override
|
public Connection getConnection() throws ErrorResultException {
|
return factory.getConnection();
|
}
|
|
@Override
|
public void close() {
|
// Do nothing.
|
}
|
};
|
}
|
|
// Prevent instantiation.
|
private Connections() {
|
// Do nothing.
|
}
|
}
|
