|
32 | 32 |
|
33 | 33 | public class NettyReactiveStreamsBody implements NettyBody {
|
34 | 34 |
|
35 |
| - private static final Logger LOGGER = LoggerFactory.getLogger(NettyReactiveStreamsBody.class); |
36 |
| - private static final String NAME_IN_CHANNEL_PIPELINE = "request-body-streamer"; |
37 |
| - |
38 |
| - private final Publisher<ByteBuf> publisher; |
39 |
| - |
40 |
| - private final long contentLength; |
41 |
| - |
42 |
| - public NettyReactiveStreamsBody(Publisher<ByteBuf> publisher, long contentLength) { |
43 |
| - this.publisher = publisher; |
44 |
| - this.contentLength = contentLength; |
45 |
| - } |
46 |
| - |
47 |
| - @Override |
48 |
| - public long getContentLength() { |
49 |
| - return contentLength; |
50 |
| - } |
51 |
| - |
52 |
| - @Override |
53 |
| - public void write(Channel channel, NettyResponseFuture<?> future) throws IOException { |
54 |
| - if (future.isStreamConsumed()) { |
55 |
| - LOGGER.warn("Stream has already been consumed and cannot be reset"); |
56 |
| - } else { |
57 |
| - future.setStreamConsumed(true); |
58 |
| - NettySubscriber subscriber = new NettySubscriber(channel, future); |
59 |
| - channel.pipeline().addLast(NAME_IN_CHANNEL_PIPELINE, subscriber); |
60 |
| - publisher.subscribe(new SubscriberAdapter(subscriber)); |
61 |
| - } |
62 |
| - } |
63 |
| - |
64 |
| - private static class SubscriberAdapter implements Subscriber<ByteBuf> { |
65 |
| - private final Subscriber<HttpContent> subscriber; |
66 |
| - |
67 |
| - public SubscriberAdapter(Subscriber<HttpContent> subscriber) { |
68 |
| - this.subscriber = subscriber; |
69 |
| - } |
70 |
| - |
71 |
| - @Override |
72 |
| - public void onSubscribe(Subscription s) { |
73 |
| - subscriber.onSubscribe(s); |
74 |
| - } |
75 |
| - |
76 |
| - @Override |
77 |
| - public void onNext(ByteBuf buffer) { |
78 |
| - HttpContent content = new DefaultHttpContent(buffer); |
79 |
| - subscriber.onNext(content); |
80 |
| - } |
81 |
| - |
82 |
| - @Override |
83 |
| - public void onError(Throwable t) { |
84 |
| - subscriber.onError(t); |
85 |
| - } |
86 |
| - |
87 |
| - @Override |
88 |
| - public void onComplete() { |
89 |
| - subscriber.onComplete(); |
90 |
| - } |
91 |
| - } |
92 |
| - |
93 |
| - private static class NettySubscriber extends HandlerSubscriber<HttpContent> { |
94 |
| - private static final Logger LOGGER = LoggerFactory.getLogger(NettySubscriber.class); |
95 |
| - |
96 |
| - private final Channel channel; |
97 |
| - private final NettyResponseFuture<?> future; |
98 |
| - |
99 |
| - public NettySubscriber(Channel channel, NettyResponseFuture<?> future) { |
100 |
| - super(channel.eventLoop()); |
101 |
| - this.channel = channel; |
102 |
| - this.future = future; |
103 |
| - } |
104 |
| - |
105 |
| - @Override |
106 |
| - protected void complete() { |
107 |
| - channel.eventLoop().execute(() -> channel.writeAndFlush(LastHttpContent.EMPTY_LAST_CONTENT).addListener(future -> removeFromPipeline())); |
108 |
| - } |
109 |
| - |
110 |
| - @Override |
111 |
| - protected void error(Throwable error) { |
112 |
| - if (error == null) |
113 |
| - throw null; |
114 |
| - removeFromPipeline(); |
115 |
| - future.abort(error); |
116 |
| - } |
117 |
| - |
118 |
| - private void removeFromPipeline() { |
119 |
| - try { |
120 |
| - channel.pipeline().remove(this); |
121 |
| - LOGGER.debug(String.format("Removed handler %s from pipeline.", NAME_IN_CHANNEL_PIPELINE)); |
122 |
| - } catch (NoSuchElementException e) { |
123 |
| - LOGGER.debug(String.format("Failed to remove handler %s from pipeline.", NAME_IN_CHANNEL_PIPELINE), e); |
124 |
| - } |
125 |
| - } |
126 |
| - } |
| 35 | + private static final Logger LOGGER = LoggerFactory.getLogger(NettyReactiveStreamsBody.class); |
| 36 | + private static final String NAME_IN_CHANNEL_PIPELINE = "request-body-streamer"; |
| 37 | + |
| 38 | + private final Publisher<ByteBuf> publisher; |
| 39 | + |
| 40 | + private final long contentLength; |
| 41 | + |
| 42 | + public NettyReactiveStreamsBody(Publisher<ByteBuf> publisher, long contentLength) { |
| 43 | + this.publisher = publisher; |
| 44 | + this.contentLength = contentLength; |
| 45 | + } |
| 46 | + |
| 47 | + @Override |
| 48 | + public long getContentLength() { |
| 49 | + return contentLength; |
| 50 | + } |
| 51 | + |
| 52 | + @Override |
| 53 | + public void write(Channel channel, NettyResponseFuture<?> future) throws IOException { |
| 54 | + if (future.isStreamConsumed()) { |
| 55 | + LOGGER.warn("Stream has already been consumed and cannot be reset"); |
| 56 | + } else { |
| 57 | + future.setStreamConsumed(true); |
| 58 | + NettySubscriber subscriber = new NettySubscriber(channel, future); |
| 59 | + channel.pipeline().addLast(NAME_IN_CHANNEL_PIPELINE, subscriber); |
| 60 | + publisher.subscribe(new SubscriberAdapter(subscriber)); |
| 61 | + } |
| 62 | + } |
| 63 | + |
| 64 | + private static class SubscriberAdapter implements Subscriber<ByteBuf> { |
| 65 | + private final Subscriber<HttpContent> subscriber; |
| 66 | + |
| 67 | + public SubscriberAdapter(Subscriber<HttpContent> subscriber) { |
| 68 | + this.subscriber = subscriber; |
| 69 | + } |
| 70 | + |
| 71 | + @Override |
| 72 | + public void onSubscribe(Subscription s) { |
| 73 | + subscriber.onSubscribe(s); |
| 74 | + } |
| 75 | + |
| 76 | + @Override |
| 77 | + public void onNext(ByteBuf buffer) { |
| 78 | + HttpContent content = new DefaultHttpContent(buffer); |
| 79 | + subscriber.onNext(content); |
| 80 | + } |
| 81 | + |
| 82 | + @Override |
| 83 | + public void onError(Throwable t) { |
| 84 | + subscriber.onError(t); |
| 85 | + } |
| 86 | + |
| 87 | + @Override |
| 88 | + public void onComplete() { |
| 89 | + subscriber.onComplete(); |
| 90 | + } |
| 91 | + } |
| 92 | + |
| 93 | + private static class NettySubscriber extends HandlerSubscriber<HttpContent> { |
| 94 | + private static final Logger LOGGER = LoggerFactory.getLogger(NettySubscriber.class); |
| 95 | + |
| 96 | + private final Channel channel; |
| 97 | + private final NettyResponseFuture<?> future; |
| 98 | + |
| 99 | + public NettySubscriber(Channel channel, NettyResponseFuture<?> future) { |
| 100 | + super(channel.eventLoop()); |
| 101 | + this.channel = channel; |
| 102 | + this.future = future; |
| 103 | + } |
| 104 | + |
| 105 | + @Override |
| 106 | + protected void complete() { |
| 107 | + channel.eventLoop().execute(() -> channel.writeAndFlush(LastHttpContent.EMPTY_LAST_CONTENT) |
| 108 | + .addListener(future -> removeFromPipeline())); |
| 109 | + } |
| 110 | + |
| 111 | + @Override |
| 112 | + protected void error(Throwable error) { |
| 113 | + if (error == null) |
| 114 | + throw null; |
| 115 | + removeFromPipeline(); |
| 116 | + future.abort(error); |
| 117 | + } |
| 118 | + |
| 119 | + private void removeFromPipeline() { |
| 120 | + try { |
| 121 | + channel.pipeline().remove(this); |
| 122 | + LOGGER.debug(String.format("Removed handler %s from pipeline.", NAME_IN_CHANNEL_PIPELINE)); |
| 123 | + } catch (NoSuchElementException e) { |
| 124 | + LOGGER.debug(String.format("Failed to remove handler %s from pipeline.", NAME_IN_CHANNEL_PIPELINE), e); |
| 125 | + } |
| 126 | + } |
| 127 | + } |
127 | 128 | }
|
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