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// Copyright Vespa.ai. Licensed under the terms of the Apache 2.0 license. See LICENSE in the project root.
package com.yahoo.jdisc.handler;
import java.nio.ByteBuffer;
import java.util.Objects;
import java.util.concurrent.ExecutionException;
import java.util.concurrent.Executor;
import java.util.concurrent.Future;
import java.util.concurrent.TimeUnit;
import java.util.concurrent.TimeoutException;
/**
* <p>This class extends the {@link AbstractContentOutputStream}, and forwards all write() and close() calls to a {@link
* FastContentWriter}. This means that once {@link #close()} has been called, the asynchronous completion of all pending
* operations can be awaited using the {@link Future} interface of this class. Any asynchronous failure will be
* rethrown when calling either of the get() methods on this class.</p>
* <p>Please notice that the Future implementation of this class will NEVER complete unless {@link #close()} has been
* called.</p>
*
* @author Simon Thoresen Hult
*/
public class FastContentOutputStream extends AbstractContentOutputStream implements Future<Boolean> {
private final FastContentWriter out;
/**
* <p>Constructs a new FastContentOutputStream that writes into the given {@link ContentChannel}.</p>
*
* @param out The ContentChannel to write the stream into.
*/
public FastContentOutputStream(ContentChannel out) {
this(new FastContentWriter(out));
}
/**
* <p>Constructs a new FastContentOutputStream that writes into the given {@link FastContentWriter}.</p>
*
* @param out The ContentWriter to write the stream into.
*/
public FastContentOutputStream(FastContentWriter out) {
Objects.requireNonNull(out, "out");
this.out = out;
}
@Override
protected void doFlush(ByteBuffer buf) {
out.write(buf);
}
@Override
protected void doClose() {
out.close();
}
@Override
public boolean cancel(boolean mayInterruptIfRunning) {
return out.cancel(mayInterruptIfRunning);
}
@Override
public boolean isCancelled() {
return out.isCancelled();
}
@Override
public boolean isDone() {
return out.isDone();
}
@Override
public Boolean get() throws InterruptedException, ExecutionException {
return out.get();
}
@Override
public Boolean get(long timeout, TimeUnit unit) throws InterruptedException, ExecutionException, TimeoutException {
return out.get(timeout, unit);
}
public void addListener(Runnable listener, Executor executor) {
out.addListener(listener, executor);
}
}
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