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StringMessageSink.java
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StringMessageSink.java
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//
// ========================================================================
// Copyright (c) 1995-2022 Mort Bay Consulting Pty Ltd and others.
//
// This program and the accompanying materials are made available under the
// terms of the Eclipse Public License v. 2.0 which is available at
// https://www.eclipse.org/legal/epl-2.0, or the Apache License, Version 2.0
// which is available at https://www.apache.org/licenses/LICENSE-2.0.
//
// SPDX-License-Identifier: EPL-2.0 OR Apache-2.0
// ========================================================================
//
package org.eclipse.jetty.websocket.core.internal.messages;
import java.lang.invoke.MethodHandle;
import org.eclipse.jetty.util.Callback;
import org.eclipse.jetty.util.Utf8StringBuilder;
import org.eclipse.jetty.websocket.core.CoreSession;
import org.eclipse.jetty.websocket.core.Frame;
import org.eclipse.jetty.websocket.core.exception.MessageTooLargeException;
import org.eclipse.jetty.websocket.core.internal.util.MethodHolder;
public class StringMessageSink extends AbstractMessageSink
{
private Utf8StringBuilder out;
private int size;
public StringMessageSink(CoreSession session, MethodHolder methodHolder)
{
super(session, methodHolder);
this.size = 0;
}
@Deprecated
public StringMessageSink(CoreSession session, MethodHandle methodHandle)
{
this(session, MethodHolder.from(methodHandle));
}
@Override
public void accept(Frame frame, Callback callback)
{
try
{
size += frame.getPayloadLength();
long maxTextMessageSize = session.getMaxTextMessageSize();
if (maxTextMessageSize > 0 && size > maxTextMessageSize)
{
throw new MessageTooLargeException(String.format("Text message too large: (actual) %,d > (configured max text message size) %,d",
size, maxTextMessageSize));
}
if (out == null)
out = new Utf8StringBuilder(session.getInputBufferSize());
out.append(frame.getPayload());
if (frame.isFin())
methodHolder.invoke(out.toString());
callback.succeeded();
session.demand(1);
}
catch (Throwable t)
{
callback.failed(t);
}
finally
{
if (frame.isFin())
{
// reset
size = 0;
out = null;
}
}
}
}