| /* |
| * 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.directory.ldap.client.api.future; |
| |
| |
| import java.util.concurrent.ExecutionException; |
| import java.util.concurrent.Future; |
| import java.util.concurrent.TimeUnit; |
| import java.util.concurrent.TimeoutException; |
| |
| |
| /** |
| * A Future to manage StartTLS handshake |
| * |
| * @author <a href="mailto:dev@directory.apache.org">Apache Directory Project</a> |
| */ |
| public class HandshakeFuture implements Future<Boolean> |
| { |
| /** A flag set to TRUE when the handshake has been completed */ |
| private volatile boolean done = false; |
| |
| /** flag to determine if this future is cancelled */ |
| protected boolean cancelled = false; |
| |
| /** |
| * Creates a new instance of HandshakeFuture. |
| */ |
| public HandshakeFuture() |
| { |
| // Nothing to initialize... |
| } |
| |
| |
| /** |
| * Cancel the Future |
| * |
| */ |
| public synchronized void cancel() |
| { |
| // set the cancel flag first |
| cancelled = true; |
| |
| // Notify the future |
| notifyAll(); |
| } |
| |
| |
| /** |
| * Set the Future to done when the TLS handshake has completed |
| */ |
| public synchronized void secured() |
| { |
| done = true; |
| |
| notifyAll(); |
| } |
| |
| |
| /** |
| * {@inheritDoc} |
| */ |
| @Override |
| public synchronized boolean cancel( boolean mayInterruptIfRunning ) |
| { |
| if ( cancelled ) |
| { |
| return cancelled; |
| } |
| |
| // set the cancel flag first |
| cancelled = true; |
| |
| // Notify the future |
| notifyAll(); |
| |
| return cancelled; |
| } |
| |
| |
| /** |
| * {@inheritDoc} |
| */ |
| @Override |
| public synchronized Boolean get() throws InterruptedException, ExecutionException |
| { |
| while ( !done && !cancelled ) |
| { |
| wait(); |
| } |
| |
| return done; |
| } |
| |
| |
| /** |
| * {@inheritDoc} |
| */ |
| @Override |
| public synchronized Boolean get( long timeout, TimeUnit unit ) |
| throws InterruptedException, ExecutionException, TimeoutException |
| { |
| // no need to wait if already done or cancelled |
| if ( !done && !cancelled ) |
| { |
| wait( unit.toMillis( timeout ) ); |
| } |
| |
| return done; |
| } |
| |
| |
| /** |
| * {@inheritDoc} |
| */ |
| @Override |
| public boolean isCancelled() |
| { |
| return cancelled; |
| } |
| |
| |
| /** |
| * {@inheritDoc} |
| */ |
| @Override |
| public boolean isDone() |
| { |
| return done; |
| } |
| |
| |
| /** |
| * {@inheritDoc} |
| */ |
| @Override |
| public String toString() |
| { |
| StringBuilder sb = new StringBuilder(); |
| |
| sb.append( "HandshakeFuture, completed: " ).append( done ).append( ", cancelled: " ).append( cancelled ); |
| |
| return sb.toString(); |
| } |
| } |