@Override
public boolean renameTo(File dest) throws IOException {
if (dest == null) {
throw new NullPointerException("dest");
}
if (byteBuf == null) {
// empty file
dest.createNewFile();
isRenamed = true;
return true;
}
int length = byteBuf.readableBytes();
FileOutputStream outputStream = new FileOutputStream(dest);
FileChannel fileChannel = outputStream.getChannel();
int written = 0;
if (byteBuf.nioBufferCount() == 1) {
ByteBuffer byteBuffer = byteBuf.nioBuffer();
while (written < length) {
written += fileChannel.write(byteBuffer);
}
} else {
ByteBuffer[] byteBuffers = byteBuf.nioBuffers();
while (written < length) {
written += fileChannel.write(byteBuffers);
}
}
fileChannel.force(false);
fileChannel.close();
outputStream.close();
isRenamed = true;
return written == length;
}
private SSLEngineResult unwrap(
SSLEngine engine, ByteBuf in, int readerIndex, int len, ByteBuf out) throws SSLException {
int nioBufferCount = in.nioBufferCount();
int writerIndex = out.writerIndex();
final SSLEngineResult result;
if (engine instanceof OpenSslEngine && nioBufferCount > 1) {
/**
* If {@link OpenSslEngine} is in use, we can use a special {@link
* OpenSslEngine#unwrap(ByteBuffer[], ByteBuffer[])} method that accepts multiple {@link
* ByteBuffer}s without additional memory copies.
*/
OpenSslEngine opensslEngine = (OpenSslEngine) engine;
try {
singleBuffer[0] = toByteBuffer(out, writerIndex, out.writableBytes());
result = opensslEngine.unwrap(in.nioBuffers(readerIndex, len), singleBuffer);
out.writerIndex(writerIndex + result.bytesProduced());
} finally {
singleBuffer[0] = null;
}
} else {
result =
engine.unwrap(
toByteBuffer(in, readerIndex, len),
toByteBuffer(out, writerIndex, out.writableBytes()));
}
out.writerIndex(writerIndex + result.bytesProduced());
return result;
}
@Override
protected boolean doWriteMessage(Object msg, ChannelOutboundBuffer in) throws Exception {
SctpMessage packet = (SctpMessage) msg;
ByteBuf data = packet.content();
int dataLen = data.readableBytes();
if (dataLen == 0) {
return true;
}
ByteBufAllocator alloc = alloc();
boolean needsCopy = data.nioBufferCount() != 1;
if (!needsCopy) {
if (!data.isDirect() && alloc.isDirectBufferPooled()) {
needsCopy = true;
}
}
ByteBuffer nioData;
if (!needsCopy) {
nioData = data.nioBuffer();
} else {
data = alloc.directBuffer(dataLen).writeBytes(data);
nioData = data.nioBuffer();
}
final MessageInfo mi =
MessageInfo.createOutgoing(association(), null, packet.streamIdentifier());
mi.payloadProtocolID(packet.protocolIdentifier());
mi.streamNumber(packet.streamIdentifier());
mi.unordered(packet.isUnordered());
final int writtenBytes = javaChannel().send(nioData, mi);
return writtenBytes > 0;
}
@Override
protected int doWriteMessages(MessageBuf<Object> buf, boolean lastSpin) throws Exception {
DatagramPacket packet = (DatagramPacket) buf.peek();
ByteBuf data = packet.data();
int dataLen = data.readableBytes();
ByteBuffer nioData;
if (data.nioBufferCount() == 1) {
nioData = data.nioBuffer();
} else {
nioData = ByteBuffer.allocate(dataLen);
data.getBytes(data.readerIndex(), nioData);
nioData.flip();
}
final int writtenBytes = javaChannel().send(nioData, packet.remoteAddress());
final SelectionKey key = selectionKey();
final int interestOps = key.interestOps();
if (writtenBytes <= 0 && dataLen > 0) {
// Did not write a packet.
// 1) If 'lastSpin' is false, the caller will call this method again real soon.
// - Do not update OP_WRITE.
// 2) If 'lastSpin' is true, the caller will not retry.
// - Set OP_WRITE so that the event loop calls flushForcibly() later.
if (lastSpin) {
if ((interestOps & SelectionKey.OP_WRITE) == 0) {
key.interestOps(interestOps | SelectionKey.OP_WRITE);
}
}
return 0;
}
// Wrote a packet.
buf.remove();
// packet was written free up buffer
packet.free();
if (buf.isEmpty()) {
// Wrote the outbound buffer completely - clear OP_WRITE.
if ((interestOps & SelectionKey.OP_WRITE) != 0) {
key.interestOps(interestOps & ~SelectionKey.OP_WRITE);
}
}
return 1;
}
@Override
protected final Object filterOutboundMessage(Object msg) throws Exception {
if (msg instanceof SctpMessage) {
SctpMessage m = (SctpMessage) msg;
ByteBuf buf = m.content();
if (buf.isDirect() && buf.nioBufferCount() == 1) {
return m;
}
return new SctpMessage(
m.protocolIdentifier(), m.streamIdentifier(), m.isUnordered(), newDirectBuffer(m, buf));
}
throw new UnsupportedOperationException(
"unsupported message type: "
+ StringUtil.simpleClassName(msg)
+ " (expected: "
+ StringUtil.simpleClassName(SctpMessage.class));
}
public ByteBuf getBytes(int var1, ByteBuf var2, int var3, int var4) {
this.checkDstIndex(var1, var4, var3, var2.capacity());
if (var2.hasArray()) {
this.getBytes(var1, var2.array(), var2.arrayOffset() + var3, var4);
} else if (var2.nioBufferCount() > 0) {
ByteBuffer[] var5 = var2.nioBuffers(var3, var4);
int var6 = var5.length;
for (int var7 = 0; var7 < var6; ++var7) {
ByteBuffer var8 = var5[var7];
int var9 = var8.remaining();
this.getBytes(var1, var8);
var1 += var9;
}
} else {
var2.setBytes(var3, (ByteBuf) this, var1, var4);
}
return this;
}
/**
* Write bytes form the given {@link ByteBuf} to the underlying {@link java.nio.channels.Channel}.
*
* @param buf the {@link ByteBuf} from which the bytes should be written
* @return amount the amount of written bytes
*/
private int doWriteBytes(ByteBuf buf, int readable) throws Exception {
int readerIndex = buf.readerIndex();
int localFlushedAmount;
if (buf.nioBufferCount() == 1) {
if (buf.hasMemoryAddress()) {
localFlushedAmount =
Native.writeAddress(fd, buf.memoryAddress(), readerIndex, buf.writerIndex());
} else {
ByteBuffer nioBuf = buf.internalNioBuffer(readerIndex, readable);
localFlushedAmount = Native.write(fd, nioBuf, nioBuf.position(), nioBuf.limit());
}
} else {
// backed by more then one buffer, do a gathering write...
ByteBuffer[] nioBufs = buf.nioBuffers();
localFlushedAmount = (int) Native.writev(fd, nioBufs, 0, nioBufs.length);
}
if (localFlushedAmount > 0) {
buf.readerIndex(readerIndex + localFlushedAmount);
}
return localFlushedAmount;
}
@Override
protected boolean doWriteMessage(Object msg, ChannelOutboundBuffer in) throws Exception {
final Object m;
final SocketAddress remoteAddress;
ByteBuf data;
if (msg instanceof AddressedEnvelope) {
@SuppressWarnings("unchecked")
AddressedEnvelope<Object, SocketAddress> envelope =
(AddressedEnvelope<Object, SocketAddress>) msg;
remoteAddress = envelope.recipient();
m = envelope.content();
} else {
m = msg;
remoteAddress = null;
}
if (m instanceof ByteBufHolder) {
data = ((ByteBufHolder) m).content();
} else if (m instanceof ByteBuf) {
data = (ByteBuf) m;
} else {
throw new UnsupportedOperationException(
"unsupported message type: " + StringUtil.simpleClassName(msg));
}
int dataLen = data.readableBytes();
if (dataLen == 0) {
return true;
}
ByteBufAllocator alloc = alloc();
boolean needsCopy = data.nioBufferCount() != 1;
if (!needsCopy) {
if (!data.isDirect() && alloc.isDirectBufferPooled()) {
needsCopy = true;
}
}
ByteBuffer nioData;
if (!needsCopy) {
nioData = data.nioBuffer();
} else {
data = alloc.directBuffer(dataLen).writeBytes(data);
nioData = data.nioBuffer();
}
final int writtenBytes;
if (remoteAddress != null) {
writtenBytes = javaChannel().send(nioData, remoteAddress);
} else {
writtenBytes = javaChannel().write(nioData);
}
boolean done = writtenBytes > 0;
if (needsCopy) {
// This means we have allocated a new buffer and need to store it back so we not need to
// allocate it again
// later
if (remoteAddress == null) {
// remoteAddress is null which means we can handle it as ByteBuf directly
in.current(data);
} else {
if (!done) {
// store it back with all the needed informations
in.current(new DefaultAddressedEnvelope<ByteBuf, SocketAddress>(data, remoteAddress));
} else {
// Just store back the new create buffer so it is cleaned up once in.remove() is called.
in.current(data);
}
}
}
return done;
}
private SSLEngineResult wrap(ByteBufAllocator alloc, SSLEngine engine, ByteBuf in, ByteBuf out)
throws SSLException {
ByteBuf newDirectIn = null;
try {
int readerIndex = in.readerIndex();
int readableBytes = in.readableBytes();
// We will call SslEngine.wrap(ByteBuffer[], ByteBuffer) to allow efficient handling of
// CompositeByteBuf without force an extra memory copy when CompositeByteBuffer.nioBuffer() is
// called.
final ByteBuffer[] in0;
if (in.isDirect() || !wantsDirectBuffer) {
// As CompositeByteBuf.nioBufferCount() can be expensive (as it needs to check all composed
// ByteBuf
// to calculate the count) we will just assume a CompositeByteBuf contains more then 1
// ByteBuf.
// The worst that can happen is that we allocate an extra ByteBuffer[] in
// CompositeByteBuf.nioBuffers()
// which is better then walking the composed ByteBuf in most cases.
if (!(in instanceof CompositeByteBuf) && in.nioBufferCount() == 1) {
in0 = singleBuffer;
// We know its only backed by 1 ByteBuffer so use internalNioBuffer to keep object
// allocation
// to a minimum.
in0[0] = in.internalNioBuffer(readerIndex, readableBytes);
} else {
in0 = in.nioBuffers();
}
} else {
// We could even go further here and check if its a CompositeByteBuf and if so try to
// decompose it and
// only replace the ByteBuffer that are not direct. At the moment we just will replace the
// whole
// CompositeByteBuf to keep the complexity to a minimum
newDirectIn = alloc.directBuffer(readableBytes);
newDirectIn.writeBytes(in, readerIndex, readableBytes);
in0 = singleBuffer;
in0[0] = newDirectIn.internalNioBuffer(0, readableBytes);
}
for (; ; ) {
ByteBuffer out0 = out.nioBuffer(out.writerIndex(), out.writableBytes());
SSLEngineResult result = engine.wrap(in0, out0);
in.skipBytes(result.bytesConsumed());
out.writerIndex(out.writerIndex() + result.bytesProduced());
switch (result.getStatus()) {
case BUFFER_OVERFLOW:
out.ensureWritable(maxPacketBufferSize);
break;
default:
return result;
}
}
} finally {
// Null out to allow GC of ByteBuffer
singleBuffer[0] = null;
if (newDirectIn != null) {
newDirectIn.release();
}
}
}
private static ByteBuffer toByteBuffer(ByteBuf out, int index, int len) {
return out.nioBufferCount() == 1
? out.internalNioBuffer(index, len)
: out.nioBuffer(index, len);
}
@Override
public int nioBufferCount() {
return buf.nioBufferCount();
}
/**
* Checks if the specified buffer is a direct buffer and is composed of a single NIO buffer. (We
* check this because otherwise we need to make it a non-composite buffer.)
*/
private static boolean isSingleDirectBuffer(ByteBuf buf) {
return buf.isDirect() && buf.nioBufferCount() == 1;
}
