Example usage for io.netty.channel ChannelFutureListener CLOSE

List of usage examples for io.netty.channel ChannelFutureListener CLOSE

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Introduction

In this page you can find the example usage for io.netty.channel ChannelFutureListener CLOSE.

Prototype

ChannelFutureListener CLOSE

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Document

A ChannelFutureListener that closes the Channel which is associated with the specified ChannelFuture .

Usage

From source file:org.apache.hadoop.hdfs.server.datanode.web.SimpleHttpProxyHandler.java

License:Apache License

private static void closeOnFlush(Channel ch) {
    if (ch.isActive()) {
        ch.writeAndFlush(Unpooled.EMPTY_BUFFER).addListener(ChannelFutureListener.CLOSE);
    }/* w  w w  . j ava  2s .co m*/
}

From source file:org.apache.hadoop.hdfs.server.datanode.web.webhdfs.HdfsWriter.java

License:Apache License

@Override
protected void channelRead0(ChannelHandlerContext ctx, HttpContent chunk) throws IOException {
    chunk.content().readBytes(out, chunk.content().readableBytes());
    if (chunk instanceof LastHttpContent) {
        response.headers().set(CONNECTION, CLOSE);
        ctx.write(response).addListener(ChannelFutureListener.CLOSE);
        releaseDfsResources();//from ww  w  .j a va  2s .com
    }
}

From source file:org.apache.hadoop.hdfs.server.datanode.web.webhdfs.HdfsWriter.java

License:Apache License

@Override
public void exceptionCaught(ChannelHandlerContext ctx, Throwable cause) {
    releaseDfsResources();//from   w ww.  j ava  2 s .  c om
    DefaultHttpResponse resp = ExceptionHandler.exceptionCaught(cause);
    resp.headers().set(CONNECTION, CLOSE);
    ctx.writeAndFlush(response).addListener(ChannelFutureListener.CLOSE);
}

From source file:org.apache.hadoop.hdfs.server.datanode.web.webhdfs.WebHdfsHandler.java

License:Apache License

@Override
public void exceptionCaught(ChannelHandlerContext ctx, Throwable cause) {
    LOG.debug("Error ", cause);
    DefaultHttpResponse resp = ExceptionHandler.exceptionCaught(cause);
    resp.headers().set(CONNECTION, CLOSE);
    ctx.writeAndFlush(resp).addListener(ChannelFutureListener.CLOSE);
}

From source file:org.apache.hadoop.hdfs.server.datanode.web.webhdfs.WebHdfsHandler.java

License:Apache License

private void onOpen(ChannelHandlerContext ctx) throws IOException {
    final String nnId = params.namenodeId();
    final int bufferSize = params.bufferSize();
    final long offset = params.offset();
    final long length = params.length();

    DefaultHttpResponse response = new DefaultHttpResponse(HTTP_1_1, OK);
    HttpHeaders headers = response.headers();
    // Allow the UI to access the file
    headers.set(ACCESS_CONTROL_ALLOW_METHODS, GET);
    headers.set(ACCESS_CONTROL_ALLOW_ORIGIN, "*");
    headers.set(CONTENT_TYPE, APPLICATION_OCTET_STREAM);
    headers.set(CONNECTION, CLOSE);/*from  w  ww  .j av  a  2 s  .c  o  m*/

    final DFSClient dfsclient = newDfsClient(nnId, conf);
    HdfsDataInputStream in = dfsclient.createWrappedInputStream(dfsclient.open(path, bufferSize, true));
    in.seek(offset);

    long contentLength = in.getVisibleLength() - offset;
    if (length >= 0) {
        contentLength = Math.min(contentLength, length);
    }
    final InputStream data;
    if (contentLength >= 0) {
        headers.set(CONTENT_LENGTH, contentLength);
        data = new LimitInputStream(in, contentLength);
    } else {
        data = in;
    }

    ctx.write(response);
    ctx.writeAndFlush(new ChunkedStream(data) {
        @Override
        public void close() throws Exception {
            super.close();
            dfsclient.close();
        }
    }).addListener(ChannelFutureListener.CLOSE);
}

From source file:org.apache.hadoop.hdfs.server.datanode.web.webhdfs.WebHdfsHandler.java

License:Apache License

private void onGetFileChecksum(ChannelHandlerContext ctx) throws IOException {
    MD5MD5CRC32FileChecksum checksum = null;
    final String nnId = params.namenodeId();
    DFSClient dfsclient = newDfsClient(nnId, conf);
    try {// ww w.j  a  v a 2 s. c o  m
        checksum = dfsclient.getFileChecksum(path, Long.MAX_VALUE);
        dfsclient.close();
        dfsclient = null;
    } finally {
        IOUtils.cleanup(LOG, dfsclient);
    }
    final byte[] js = JsonUtil.toJsonString(checksum).getBytes(Charsets.UTF_8);
    DefaultFullHttpResponse resp = new DefaultFullHttpResponse(HTTP_1_1, OK, Unpooled.wrappedBuffer(js));

    resp.headers().set(CONTENT_TYPE, APPLICATION_JSON_UTF8);
    resp.headers().set(CONTENT_LENGTH, js.length);
    resp.headers().set(CONNECTION, CLOSE);
    ctx.writeAndFlush(resp).addListener(ChannelFutureListener.CLOSE);
}

From source file:org.apache.hadoop.hdfs.tools.offlineImageViewer.FSImageHandler.java

License:Apache License

@Override
public void channelRead0(ChannelHandlerContext ctx, HttpRequest request) throws Exception {
    if (request.method() != HttpMethod.GET) {
        DefaultHttpResponse resp = new DefaultHttpResponse(HTTP_1_1, METHOD_NOT_ALLOWED);
        resp.headers().set(CONNECTION, CLOSE);
        ctx.write(resp).addListener(ChannelFutureListener.CLOSE);
        return;/* w  ww.j  a  v  a2  s .c o  m*/
    }

    QueryStringDecoder decoder = new QueryStringDecoder(request.uri());
    final String op = getOp(decoder);

    final String content;
    String path = getPath(decoder);
    switch (op) {
    case "GETFILESTATUS":
        content = image.getFileStatus(path);
        break;
    case "LISTSTATUS":
        content = image.listStatus(path);
        break;
    case "GETACLSTATUS":
        content = image.getAclStatus(path);
        break;
    case "GETXATTRS":
        List<String> names = getXattrNames(decoder);
        String encoder = getEncoder(decoder);
        content = image.getXAttrs(path, names, encoder);
        break;
    case "LISTXATTRS":
        content = image.listXAttrs(path);
        break;
    default:
        throw new IllegalArgumentException("Invalid value for webhdfs parameter" + " \"op\"");
    }

    LOG.info("op=" + op + " target=" + path);

    DefaultFullHttpResponse resp = new DefaultFullHttpResponse(HTTP_1_1, HttpResponseStatus.OK,
            Unpooled.wrappedBuffer(content.getBytes(Charsets.UTF_8)));
    resp.headers().set(CONTENT_TYPE, APPLICATION_JSON_UTF8);
    resp.headers().set(CONTENT_LENGTH, resp.content().readableBytes());
    resp.headers().set(CONNECTION, CLOSE);
    ctx.write(resp).addListener(ChannelFutureListener.CLOSE);
}

From source file:org.apache.hadoop.hdfs.tools.offlineImageViewer.FSImageHandler.java

License:Apache License

@Override
public void exceptionCaught(ChannelHandlerContext ctx, Throwable cause) throws Exception {
    Exception e = cause instanceof Exception ? (Exception) cause : new Exception(cause);
    final String output = JsonUtil.toJsonString(e);
    ByteBuf content = Unpooled.wrappedBuffer(output.getBytes(Charsets.UTF_8));
    final DefaultFullHttpResponse resp = new DefaultFullHttpResponse(HTTP_1_1, INTERNAL_SERVER_ERROR, content);

    resp.headers().set(CONTENT_TYPE, APPLICATION_JSON_UTF8);
    if (e instanceof IllegalArgumentException) {
        resp.setStatus(BAD_REQUEST);//from w w w  .  ja v  a  2  s .  c  om
    } else if (e instanceof FileNotFoundException) {
        resp.setStatus(NOT_FOUND);
    } else if (e instanceof IOException) {
        resp.setStatus(FORBIDDEN);
    }
    resp.headers().set(CONTENT_LENGTH, resp.content().readableBytes());
    resp.headers().set(CONNECTION, CLOSE);
    ctx.write(resp).addListener(ChannelFutureListener.CLOSE);
}

From source file:org.apache.hyracks.http.server.ChunkedResponse.java

License:Apache License

@Override
public void close() throws IOException {
    writer.close();//w ww  .  j  av  a 2  s . c  om
    if (error == null && response.status() == HttpResponseStatus.OK) {
        if (!done) {
            future = ctx.writeAndFlush(LastHttpContent.EMPTY_LAST_CONTENT);
        }
    } else {
        // There was an error
        if (headerSent) {
            LOGGER.log(Level.WARNING, "Error after header write of chunked response");
            if (error != null) {
                error.release();
            }
            future = ctx.channel().close();
        } else {
            if (keepAlive && response.status() != HttpResponseStatus.UNAUTHORIZED) {
                response.headers().remove(HttpHeaderNames.CONNECTION);
            }
            // we didn't send anything to the user, we need to send an unchunked error response
            fullResponse(response.protocolVersion(), response.status(),
                    error == null ? ctx.alloc().buffer(0, 0) : error, response.headers());
        }
        if (response.status() != HttpResponseStatus.UNAUTHORIZED) {
            // since the request failed, we need to close the channel on complete
            future.addListener(ChannelFutureListener.CLOSE);
        }
    }
    done = true;
}

From source file:org.apache.hyracks.http.server.FullResponse.java

License:Apache License

@Override
public void close() throws IOException {
    writer.close();//  w  w  w .j a v a2  s  .c o  m
    FullHttpResponse fullResponse = response.replace(Unpooled.copiedBuffer(baos.toByteArray()));
    if (keepAlive) {
        if (response.status() == HttpResponseStatus.OK
                || response.status() == HttpResponseStatus.UNAUTHORIZED) {
            fullResponse.headers().setInt(HttpHeaderNames.CONTENT_LENGTH,
                    fullResponse.content().readableBytes());
        } else {
            fullResponse.headers().remove(HttpHeaderNames.CONNECTION);
        }
    }
    future = ctx.writeAndFlush(fullResponse);
    if (response.status() != HttpResponseStatus.OK && response.status() != HttpResponseStatus.UNAUTHORIZED) {
        future.addListener(ChannelFutureListener.CLOSE);
    }
}