| /* |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * 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 |
| * under the License. |
| * |
| */ |
| package org.apache.mina.core.future; |
| |
| import org.apache.mina.core.session.IoSession; |
| |
| /** |
| * An {@link IoFuture} for asynchronous connect requests. |
| * |
| * <h3>Example</h3> |
| * <pre> |
| * IoConnector connector = ...; |
| * ConnectFuture future = connector.connect(...); |
| * future.awaitUninterruptibly(); // Wait until the connection attempt is finished. |
| * IoSession session = future.getSession(); |
| * session.write(...); |
| * </pre> |
| * |
| * @author <a href="http://mina.apache.org">Apache MINA Project</a> |
| */ |
| public interface ConnectFuture extends IoFuture { |
| /** |
| * Returns {@link IoSession} which is the result of connect operation. |
| * |
| * @return The {link IoSession} instance that has been associated with the connection, |
| * if the connection was successful, {@code null} otherwise |
| */ |
| @Override |
| IoSession getSession(); |
| |
| /** |
| * Returns the cause of the connection failure. |
| * |
| * @return <tt>null</tt> if the connect operation is not finished yet, |
| * or if the connection attempt is successful, otherwise returns |
| * the cause of the exception |
| */ |
| Throwable getException(); |
| |
| /** |
| * @return {@code true} if the connect operation is finished successfully. |
| */ |
| boolean isConnected(); |
| |
| /** |
| * @return {@code true} if the connect operation has been canceled by |
| * {@link #cancel()} method. |
| */ |
| boolean isCanceled(); |
| |
| /** |
| * Sets the newly connected session and notifies all threads waiting for |
| * this future. This method is invoked by MINA internally. Please do not |
| * call this method directly. |
| * |
| * @param session The created session to store in the ConnectFuture insteance |
| */ |
| void setSession(IoSession session); |
| |
| /** |
| * Sets the exception caught due to connection failure and notifies all |
| * threads waiting for this future. This method is invoked by MINA |
| * internally. Please do not call this method directly. |
| * |
| * @param exception The exception to store in the ConnectFuture instance |
| */ |
| void setException(Throwable exception); |
| |
| /** |
| * Cancels the connection attempt and notifies all threads waiting for |
| * this future. |
| * |
| * @return {@code true} if the future has been cancelled by this call, {@code false} |
| * if the future was already cancelled. |
| */ |
| boolean cancel(); |
| |
| /** |
| * {@inheritDoc} |
| */ |
| @Override |
| ConnectFuture await() throws InterruptedException; |
| |
| /** |
| * {@inheritDoc} |
| */ |
| @Override |
| ConnectFuture awaitUninterruptibly(); |
| |
| /** |
| * {@inheritDoc} |
| */ |
| @Override |
| ConnectFuture addListener(IoFutureListener<?> listener); |
| |
| /** |
| * {@inheritDoc} |
| */ |
| @Override |
| ConnectFuture removeListener(IoFutureListener<?> listener); |
| } |