本文整理汇总了Java中io.netty.channel.FileRegion类的典型用法代码示例。如果您正苦于以下问题：Java FileRegion类的具体用法？Java FileRegion怎么用？Java FileRegion使用的例子？那么, 这里精选的类代码示例或许可以为您提供帮助。
FileRegion类属于io.netty.channel包，在下文中一共展示了FileRegion类的15个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的Java代码示例。
示例1: transferTo
import io.netty.channel.FileRegion; //导入依赖的package包/类
/**
* This code is more complicated than you would think because we might require multiple
* transferTo invocations in order to transfer a single MessageWithHeader to avoid busy waiting.
*
* The contract is that the caller will ensure position is properly set to the total number
* of bytes transferred so far (i.e. value returned by transfered()).
*/
@Override
public long transferTo(final WritableByteChannel target, final long position) throws IOException {
Preconditions.checkArgument(position == totalBytesTransferred, "Invalid position.");
// Bytes written for header in this call.
long writtenHeader = 0;
if (header.readableBytes() > 0) {
writtenHeader = copyByteBuf(header, target);
totalBytesTransferred += writtenHeader;
if (header.readableBytes() > 0) {
return writtenHeader;
}
}
// Bytes written for body in this call.
long writtenBody = 0;
if (body instanceof FileRegion) {
writtenBody = ((FileRegion) body).transferTo(target, totalBytesTransferred - headerLength);
} else if (body instanceof ByteBuf) {
writtenBody = copyByteBuf((ByteBuf) body, target);
}
totalBytesTransferred += writtenBody;
return writtenHeader + writtenBody;
}
示例2: checkProducerTransactionState
import io.netty.channel.FileRegion; //导入依赖的package包/类
public void checkProducerTransactionState(
final Channel channel,
final CheckTransactionStateRequestHeader requestHeader,
final SelectMappedBufferResult selectMappedBufferResult) {
RemotingCommand request =
RemotingCommand.createRequestCommand(RequestCode.CHECK_TRANSACTION_STATE, requestHeader);
request.markOnewayRPC();
try {
FileRegion fileRegion =
new OneMessageTransfer(request.encodeHeader(selectMappedBufferResult.getSize()),
selectMappedBufferResult);
channel.writeAndFlush(fileRegion).addListener(new ChannelFutureListener() {
@Override
public void operationComplete(ChannelFuture future) throws Exception {
selectMappedBufferResult.release();
if (!future.isSuccess()) {
log.error("invokeProducer failed,", future.cause());
}
}
});
} catch (Throwable e) {
log.error("invokeProducer exception", e);
selectMappedBufferResult.release();
}
}
示例3: messageReceived
import io.netty.channel.FileRegion; //导入依赖的package包/类
@Override
protected void messageReceived(ChannelHandlerContext cxt, String msg)
throws Exception {
File file = new File(msg);
if(file.exists()) {
if(!file.isFile()){
cxt.writeAndFlush("No file " + file + CR);
}
cxt.writeAndFlush("file " + file.length() + CR);
RandomAccessFile randomAccessFile = new RandomAccessFile(msg, "r");
FileRegion fileRegion = new DefaultFileRegion(randomAccessFile.getChannel(), 0, randomAccessFile.length());
cxt.write(fileRegion);
cxt.writeAndFlush(CR);
randomAccessFile.close();
}else{
cxt.writeAndFlush("File not found: " + file + CR);
}
}
示例4: write
import io.netty.channel.FileRegion; //导入依赖的package包/类
/**
* {@inheritDoc}
* @see io.netty.channel.ChannelOutboundInvoker#write(java.lang.Object)
*/
@Override
public ChannelFuture write(Object message) {
if(message!=null) {
if(message instanceof FileRegion) {
try {
Pipe pipe = Pipe.open();
FileRegion fr = (FileRegion)message;
long bytesToRead = fr.count();
fr.transferTo(pipe.sink(), 0L);
byte[] content = new byte[(int)bytesToRead];
pipe.source().read(ByteBuffer.wrap(content));
channelWrites.add(content);
} catch (Exception ex) {
log.error("Failed to read content from pipe", ex);
channelWrites.add(ex);
}
} else {
channelWrites.add(message);
}
log.info("Received Channel Write [{}] type:[{}]", message, message.getClass().getName());
}
return null;
}
示例5: testEncode
import io.netty.channel.FileRegion; //导入依赖的package包/类
/**
* This unit test case ensures that {@link FileRegionEncoder} indeed wraps {@link FileRegion} to
* {@link ByteBuf}.
* @throws IOException if there is an error.
*/
@Test
public void testEncode() throws IOException {
FileRegionEncoder fileRegionEncoder = new FileRegionEncoder();
EmbeddedChannel channel = new EmbeddedChannel(fileRegionEncoder);
File file = File.createTempFile(UUID.randomUUID().toString(), ".data");
file.deleteOnExit();
Random random = new Random(System.currentTimeMillis());
int dataLength = 1 << 10;
byte[] data = new byte[dataLength];
random.nextBytes(data);
write(file, data);
FileRegion fileRegion = new DefaultFileRegion(file, 0, dataLength);
Assert.assertEquals(0, fileRegion.transfered());
Assert.assertEquals(dataLength, fileRegion.count());
Assert.assertTrue(channel.writeOutbound(fileRegion));
ByteBuf out = (ByteBuf) channel.readOutbound();
byte[] arr = new byte[out.readableBytes()];
out.getBytes(0, arr);
Assert.assertArrayEquals("Data should be identical", data, arr);
}
示例6: messageReceived
import io.netty.channel.FileRegion; //导入依赖的package包/类
public void messageReceived(ChannelHandlerContext ctx, String msg)
throws Exception {
File file = new File(msg);
if (file.exists()) {
if (!file.isFile()) {
ctx.writeAndFlush("Not a file : " + file + CR);
return;
}
ctx.write(file + " " + file.length() + CR);
RandomAccessFile randomAccessFile = new RandomAccessFile(msg, "r");
FileRegion region = new DefaultFileRegion(
randomAccessFile.getChannel(), 0, randomAccessFile.length());
ctx.write(region);
ctx.writeAndFlush(CR);
randomAccessFile.close();
} else {
ctx.writeAndFlush("File not found: " + file + CR);
}
}
示例7: doWriteFileRegion
import io.netty.channel.FileRegion; //导入依赖的package包/类
@Override
protected void doWriteFileRegion(FileRegion region) throws Exception {
OutputStream os = this.os;
if (os == null) {
throw new NotYetConnectedException();
}
if (outChannel == null) {
outChannel = Channels.newChannel(os);
}
long written = 0;
for (;;) {
long localWritten = region.transferTo(outChannel, written);
if (localWritten == -1) {
checkEOF(region);
return;
}
written += localWritten;
if (written >= region.count()) {
return;
}
}
}
示例8: filterOutboundMessage
import io.netty.channel.FileRegion; //导入依赖的package包/类
@Override
protected final Object filterOutboundMessage(Object msg) {
if (msg instanceof ByteBuf) {
ByteBuf buf = (ByteBuf) msg;
if (buf.isDirect()) {
return msg;
}
return newDirectBuffer(buf);
}
if (msg instanceof FileRegion) {
return msg;
}
throw new UnsupportedOperationException(
"unsupported message type: " + StringUtil.simpleClassName(msg) + EXPECTED_TYPES);
}
示例9: messageReceived
import io.netty.channel.FileRegion; //导入依赖的package包/类
@Override
protected void messageReceived(ChannelHandlerContext ctx, String msg) throws Exception {
File file = new File(msg);
if (file.exists()) {
if (!file.isFile()) {
ctx.writeAndFlush("not a file :" + file + CR);
return;
}
ctx.write(file + " " + file.length() + CR);
RandomAccessFile raf = new RandomAccessFile(file, "r");
FileRegion fileRegion = new DefaultFileRegion(raf.getChannel(), 0, raf.length());
ctx.write(fileRegion);
ctx.writeAndFlush(CR);
raf.close();
} else {
ctx.writeAndFlush("file not found: " + file + CR);
}
}
示例10: messageReceived
import io.netty.channel.FileRegion; //导入依赖的package包/类
public void messageReceived(ChannelHandlerContext ctx, String msg)
throws Exception {
File file = new File(msg);
if (file.exists()) {
if (!file.isFile()) {
ctx.writeAndFlush("Not a file : " + file + CR);
return;
}
ctx.write(file + " " + file.length() + CR);
RandomAccessFile randomAccessFile = new RandomAccessFile(msg, "r");
FileRegion region = new DefaultFileRegion(
randomAccessFile.getChannel(), 0, randomAccessFile.length());
ctx.write(region);
ctx.writeAndFlush(CR);
randomAccessFile.close();
} else {
ctx.writeAndFlush("File not found: " + file + CR);
}
}
示例11: channelRead0
import io.netty.channel.FileRegion; //导入依赖的package包/类
@Override
public void channelRead0(ChannelHandlerContext ctx, String msg) throws Exception {
File file = new File(msg);
if (file.exists()) {
if (!file.isFile()) {
ctx.writeAndFlush("Not a file: " + file + '\n');
return;
}
ctx.write(file + " " + file.length() + '\n');
FileInputStream fis = new FileInputStream(file);
FileRegion region = new DefaultFileRegion(fis.getChannel(), 0, file.length());
ctx.write(region);
ctx.writeAndFlush("\n");
fis.close();
} else {
ctx.writeAndFlush("File not found: " + file + '\n');
}
}
示例12: doWrite
import io.netty.channel.FileRegion; //导入依赖的package包/类
@Override
protected void doWrite(ChannelOutboundBuffer in) throws Exception {
for (;;) {
Object msg = in.current();
if (msg == null) {
// nothing left to write
break;
}
if (msg instanceof ByteBuf) {
ByteBuf buf = (ByteBuf) msg;
while (buf.isReadable()) {
doWriteBytes(buf);
}
in.remove();
} else if (msg instanceof FileRegion) {
doWriteFileRegion((FileRegion) msg);
in.remove();
} else {
in.remove(new UnsupportedOperationException(
"unsupported message type: " + StringUtil.simpleClassName(msg)));
}
}
}
示例13: channelRead0
import io.netty.channel.FileRegion; //导入依赖的package包/类
@Override
protected void channelRead0(ChannelHandlerContext ctx, String msg)
throws Exception {
File file = new File(msg);
if (file.exists()) {
if (!file.isFile()) {
ctx.writeAndFlush("Not a file: " + file + '\n');
return;
}
ctx.write(file + " " + file.length() + '\n');
FileInputStream fis = new FileInputStream(file);
FileRegion region = new DefaultFileRegion(fis.getChannel(), 0, file.length());
ctx.write(region);
ctx.writeAndFlush("\n");
fis.close();
} else {
ctx.writeAndFlush("File not found: " + file + '\n');
}
}
示例14: messageReceived
import io.netty.channel.FileRegion; //导入依赖的package包/类
@Override
public void messageReceived(ChannelHandlerContext ctx, String msg) throws Exception {
File file = new File(msg);
if (file.exists()) {
if (!file.isFile()) {
ctx.writeAndFlush("Not a file: " + file + '\n');
return;
}
ctx.write(file + " " + file.length() + '\n');
FileInputStream fis = new FileInputStream(file);
FileRegion region = new DefaultFileRegion(fis.getChannel(), 0, file.length());
ctx.write(region);
ctx.writeAndFlush("\n");
fis.close();
} else {
ctx.writeAndFlush("File not found: " + file + '\n');
}
}
示例15: doWrite
import io.netty.channel.FileRegion; //导入依赖的package包/类
@Override
protected void doWrite(ChannelOutboundBuffer in) throws Exception {
for (;;) {
Object msg = in.current(false);
if (msg == null) {
// nothing left to write
break;
}
if (msg instanceof ByteBuf) {
ByteBuf buf = (ByteBuf) msg;
while (buf.isReadable()) {
doWriteBytes(buf);
}
in.remove();
} else if (msg instanceof FileRegion) {
doWriteFileRegion((FileRegion) msg);
in.remove();
} else {
in.remove(new UnsupportedOperationException(
"unsupported message type: " + StringUtil.simpleClassName(msg)));
}
}
}