/**
*
* 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.airavata.agents.streaming;

import java.io.IOException;
import java.io.OutputStream;
import java.util.concurrent.BlockingQueue;
import java.util.concurrent.TimeUnit;

public class VirtualOutputStream extends OutputStream {

    private BlockingQueue<Integer> queue;
    private long byteCount;
    private long streamLength;

    public VirtualOutputStream(BlockingQueue<Integer> queue, long streamLength) {
        this.queue = queue;
        this.streamLength = streamLength;
    }

    @Override
    public void write(int b) throws IOException {
        try {
            if (byteCount == streamLength) {
                throw new IOException("Can not write more than the stream length " + streamLength);
            }
            boolean status = this.queue.offer(b, 10, TimeUnit.SECONDS);
            if (!status) {
                throw new IOException("Timed out writing into the queue");
            }
            byteCount++;
            // System.out.println("Writing byte " + byteCount);
        } catch (InterruptedException e) {
            throw new IOException("Write was interrupted", e);
        }
    }
}
