Examples of org.glassfish.grizzly.Buffer

org.glassfish.grizzly.Buffer
JDK {@link ByteBuffer} was taken as base for GrizzlyBuffer interface, but Buffer has several extensions: it's possible to prepend some data to a Buffer and release Buffer, when it's not required any more. @author Alexey Stashok

                final Buffer originalMessage) {
            final SSLConnectionContext sslCtx = getSslConnectionContext(connection);


            final int copyThreshold = sslCtx.getNetBufferSize() / 2;


            final Buffer lastOutputBuffer = sslCtx.resetLastOutputBuffer();


            final int totalRemaining = originalMessage.remaining();


            if (totalRemaining < copyThreshold) {
                return move(connection.getTransport().getMemoryManager(),
                        originalMessage);
            }
            if (lastOutputBuffer.remaining() < copyThreshold) {
                final Buffer tmpBuf =
                        copy(connection.getTransport().getMemoryManager(),
                        originalMessage);


                if (originalMessage.isComposite()) {
                    ((CompositeBuffer) originalMessage).replace(

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        handshakeContextAttr.set(connection,
                new SSLHandshakeContext(connection, completionHandler));
        connection.addCloseListener(closeListener);


        synchronized(connection) {
            final Buffer buffer = doHandshakeStep(sslCtx, context, null);
            assert (buffer == null);
        }
    }

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         */
        public boolean add(FilterChainContext context) throws IOException {
            if (error != null) throw error;
            if (isComplete) return false;


            final Buffer buffer = context.getMessage();


            final int newSize = sizeInBytes + buffer.remaining();
            if (newSize > maxPendingBytes) {
                throw new PendingWriteQueueLimitExceededException(
                        "Max queued data limit exceeded: "
                        + newSize + '>' + maxPendingBytes);
            }

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    throws SSLException {


        SSLConnectionContext.SslResult result =
                sslCtx.unwrap(inputBuffer, tmpOutputBuffer, HS_UNWRAP_ALLOCATOR);


        final Buffer output = result.getOutput();
        
        assert !output.isComposite();
        
        if (output != tmpOutputBuffer) {
            output.dispose();
        }
        
        if (result.isError()) {
            throw result.getError();
        }

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    }


    @Override
    public boolean equals(Object obj) {
        if (obj instanceof Buffer) {
            Buffer that = (Buffer) obj;
            if (this.remaining() != that.remaining()) {
                return false;
            }
            int p = this.position();
            for (int i = this.limit() - 1, j = that.limit() - 1; i >= p; i--, j--) {
                byte v1 = this.get(i);
                byte v2 = that.get(j);
                if (v1 != v2) {
                    return false;
                }
            }
            return true;

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            final SSLConnectionContext sslCtx, final Buffer netBuffer)
            throws SSLException {


        final int packetBufferSize = sslCtx.getNetBufferSize();
        
        Buffer buffer;
        if (netBuffer != null && !netBuffer.isComposite() &&
                netBuffer.capacity() - netBuffer.limit() >= packetBufferSize) {
            netBuffer.position(netBuffer.limit());
            netBuffer.limit(netBuffer.capacity());
            
            buffer = netBuffer;
        } else {
            buffer = allocateOutputBuffer(packetBufferSize * 2);
        }
        
        final SSLConnectionContext.SslResult result =
                sslCtx.wrap(Buffers.EMPTY_BUFFER, buffer, HS_WRAP_ALLOCATOR);
        
        Buffer output = result.getOutput();
        
        output.flip();
        if (buffer != output) {
            if (buffer == netBuffer) {
                netBuffer.flip();
            }
        }
        
        if (result.isError()) {
            if (output != netBuffer) {
                output.dispose();
            }
            
            throw result.getError();
        }

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            ThreadCache.obtainIndex(SSLBaseFilter.class.getName() + ".output-buffer-cache",
            Buffer.class, 4);
    
    static Buffer allocateOutputBuffer(final int size/*, final int counter*/) {
        
        Buffer buffer = ThreadCache.takeFromCache(SSL_OUTPUT_BUFFER_IDX);
        final boolean hasBuffer = (buffer != null);
        if (!hasBuffer || buffer.remaining() < size) {
            final ByteBuffer byteBuffer;
                byteBuffer = ByteBuffer.allocate(size);
            
            buffer = new ByteBufferWrapper(byteBuffer) {

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        if (!buffer.hasRemaining()) {
            buffer.tryDispose();
            return null;
        }
        
        final Buffer inputBuffer = sslCtx.resetLastInputBuffer();
        if (inputBuffer == null) { // SSLTransportWrapper hasn't been used
            final Buffer remainder = buffer.split(buffer.position());
            buffer.tryDispose();
            return remainder;
        } else {
            return move(context.getMemoryManager(), buffer);
        }

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        }
    }
    
    static Buffer copy(final MemoryManager memoryManager,
            final Buffer buffer) {
        final Buffer tmpBuf = memoryManager.allocate(buffer.remaining());
        tmpBuf.put(buffer);


        return tmpBuf.flip();


    }

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    }
    
    static Buffer move(final MemoryManager memoryManager,
            final Buffer buffer) {
        final Buffer tmpBuf = copy(memoryManager, buffer);
        buffer.tryDispose();


        return tmpBuf;


    }

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