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/*
 * 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.sshd.client.future;

import org.apache.sshd.common.SshException;
import org.apache.sshd.common.future.DefaultSshFuture;

/**
 * A default implementation of {@link OpenFuture}.
 *
 * @author <a href="mailto:dev@mina.apache.org">Apache MINA SSHD Project</a>
 */

public class DefaultOpenFuture extends DefaultSshFuture<OpenFuture> implements OpenFuture {

    public DefaultOpenFuture(Object lock) {
        super(lock);
    }

    public void verify() throws SshException {
        try {
            await();
        }
        catch (InterruptedException e) {
            throw new SshException("Channel opening interrupted", e);
        }
        if (!isOpened()) {
            throw new SshException("Channel opening failed", getException());
        }
    }

    public Throwable getException() {
        Object v = getValue();
        if (v instanceof Throwable) {
            return (Throwable) v;
        } else {
            return null;
        }
    }

    public boolean isOpened() {
        return getValue() instanceof Boolean;
    }

    public void setOpened() {
        setValue(Boolean.TRUE);
    }

    public void setException(Throwable exception) {
        if (exception == null) {
            throw new NullPointerException("exception");
        }
        setValue(exception);
    }

}