Package io.netty.channel

Examples of io.netty.channel.FileRegion

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        MessageEvent e = (MessageEvent) evt;
        Object originalMessage = e.getMessage();
        if (originalMessage instanceof FileRegion) {

            FileRegion fr = (FileRegion) originalMessage;
            WritableByteChannel bchannel = new ChannelWritableByteChannel(ctx, e);

            int length = 0;
            long i = 0;
            while ((i = fr.transferTo(bchannel, length)) > 0) {
                length += i;
                if (length >= fr.getCount()) {
                    break;
                }
            }

        } else {
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        RemotingCommand request =
                RemotingCommand.createRequestCommand(RequestCode.CHECK_TRANSACTION_STATE, requestHeader);
        request.markOnewayRPC();

        try {
            FileRegion fileRegion =
                    new OneMessageTransfer(request.encodeHeader(selectMapedBufferResult.getSize()),
                        selectMapedBufferResult);
            channel.writeAndFlush(fileRegion).addListener(new ChannelFutureListener() {
                @Override
                public void operationComplete(ChannelFuture future) throws Exception {
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        if (queryMessageResult.getBufferTotalSize() > 0) {
            response.setCode(ResponseCode.SUCCESS_VALUE);
            response.setRemark(null);

            try {
                FileRegion fileRegion =
                        new QueryMessageTransfer(response.encodeHeader(queryMessageResult
                            .getBufferTotalSize()), queryMessageResult);
                ctx.channel().writeAndFlush(fileRegion).addListener(new ChannelFutureListener() {
                    @Override
                    public void operationComplete(ChannelFuture future) throws Exception {
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        if (selectMapedBufferResult != null) {
            response.setCode(ResponseCode.SUCCESS_VALUE);
            response.setRemark(null);

            try {
                FileRegion fileRegion =
                        new OneMessageTransfer(response.encodeHeader(selectMapedBufferResult.getSize()),
                            selectMapedBufferResult);
                ctx.channel().writeAndFlush(fileRegion).addListener(new ChannelFutureListener() {
                    @Override
                    public void operationComplete(ChannelFuture future) throws Exception {
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            }

            switch (response.getCode()) {
            case ResponseCode.SUCCESS_VALUE:
                try {
                    FileRegion fileRegion =
                            new ManyMessageTransfer(response.encodeHeader(getMessageResult
                                .getBufferTotalSize()), getMessageResult);
                    channel.writeAndFlush(fileRegion).addListener(new ChannelFutureListener() {
                        @Override
                        public void operationComplete(ChannelFuture future) throws Exception {
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                RemotingCommand.createRequestCommand(MQRequestCode.CHECK_TRANSACTION_STATE_VALUE,
                    requestHeader);
        request.markOnewayRPC();

        try {
            FileRegion fileRegion =
                    new OneMessageTransfer(request.encodeHeader(selectMapedBufferResult.getSize()),
                        selectMapedBufferResult);
            channel.writeAndFlush(fileRegion).addListener(new ChannelFutureListener() {
                @Override
                public void operationComplete(ChannelFuture future) throws Exception {
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            }

            switch (response.getCode()) {
            case ResponseCode.SUCCESS:
                try {
                    FileRegion fileRegion =
                            new ManyMessageTransfer(response.encodeHeader(getMessageResult
                                .getBufferTotalSize()), getMessageResult);
                    channel.writeAndFlush(fileRegion).addListener(new ChannelFutureListener() {
                        @Override
                        public void operationComplete(ChannelFuture future) throws Exception {
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            int length = 0;

            // Add support to write a FileRegion. This in fact will not give any performance gain but at least it not fail and
            // we did the best to emulate it
            if (message instanceof FileRegion) {
                FileRegion fr = (FileRegion) message;
                try {
                    synchronized (out) {
                        WritableByteChannel  bchannel = Channels.newChannel(out);
                       
                        long i = 0;
                        while ((i = fr.transferTo(bchannel, length)) > 0) {
                            length += i;
                            if (length >= fr.getCount()) {
                                break;
                            }
                        }
                    }
                } finally {
                    if (fr.releaseAfterTransfer()) {
                        fr.releaseExternalResources();
                    }

                }
            } else {
                ChannelBuffer a = (ChannelBuffer) message;
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        if (ch.getPipeline().get(SslHandler.class) != null) {
            // Cannot use zero-copy with HTTPS.
            writeFuture = ch.write(new ChunkedFile(raf, 0, fileLength, 8192));
        } else {
            // No encryption - use zero-copy.
            final FileRegion region =
                new DefaultFileRegion(raf.getChannel(), 0, fileLength);
            writeFuture = ch.write(region);
            writeFuture.addListener(new ChannelFutureProgressListener() {
                @Override
                public void operationComplete(ChannelFuture future) {
                    region.releaseExternalResources();
                }

                @Override
                public void operationProgressed(
                        ChannelFuture future, long amount, long current, long total) {
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                    in.progress(readableBytes - newReadableBytes);
                    readableBytes = newReadableBytes;
                }
                in.remove();
            } else if (msg instanceof FileRegion) {
                FileRegion region = (FileRegion) msg;
                long transfered = region.transfered();
                doWriteFileRegion(region);
                in.progress(region.transfered() - transfered);
                in.remove();
            } else {
                in.remove(new UnsupportedOperationException(
                        "unsupported message type: " + StringUtil.simpleClassName(msg)));
            }
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