private ChannelFuture sendFile(ChannelHandlerContext ctx, Channel ch, FileChunk file)
throws IOException {
RandomAccessFile raf;
try {
raf = new RandomAccessFile(file.getFile(), "r");
} catch (FileNotFoundException fnfe) {
return null;
}
ChannelFuture writeFuture;
if (ch.getPipeline().get(SslHandler.class) != null) {
// Cannot use zero-copy with HTTPS.
writeFuture = ch.write(new ChunkedFile(raf, file.startOffset(), file.length(), 8192));
} else {
// No encryption - use zero-copy.
final FileRegion region =
new DefaultFileRegion(raf.getChannel(), file.startOffset(), file.length());
writeFuture = ch.write(region);
writeFuture.addListener(
new ChannelFutureListener() {
public void operationComplete(ChannelFuture future) {
region.releaseExternalResources();
}
});
}
return writeFuture;
}
private ChannelFuture sendFile(ChannelHandlerContext ctx, Channel ch, FileChunk file)
throws IOException {
RandomAccessFile spill;
try {
spill = new RandomAccessFile(file.getFile(), "r");
} catch (FileNotFoundException e) {
LOG.info(file.getFile() + " not found");
return null;
}
ChannelFuture writeFuture;
if (ch.getPipeline().get(SslHandler.class) == null) {
final FadvisedFileRegion partition =
new FadvisedFileRegion(
spill,
file.startOffset,
file.length(),
manageOsCache,
readaheadLength,
readaheadPool,
file.getFile().getAbsolutePath());
writeFuture = ch.write(partition);
writeFuture.addListener(
new ChannelFutureListener() {
// TODO error handling; distinguish IO/connection failures,
// attribute to appropriate spill output
@Override
public void operationComplete(ChannelFuture future) {
partition.releaseExternalResources();
}
});
} else {
// HTTPS cannot be done with zero copy.
final FadvisedChunkedFile chunk =
new FadvisedChunkedFile(
spill,
file.startOffset,
file.length,
sslFileBufferSize,
manageOsCache,
readaheadLength,
readaheadPool,
file.getFile().getAbsolutePath());
writeFuture = ch.write(chunk);
}
metrics.shuffleConnections.incr();
metrics.shuffleOutputBytes.incr(file.length); // optimistic
return writeFuture;
}
private void sendHttpResponse(Channel channel, HttpRequest request, HttpResponse response) {
if (!channel.isOpen()) {
return;
}
// response的内容已在各Listener中填充
response.headers().set(Names.CONTENT_LENGTH, response.getContent().readableBytes());
response.headers().set(Names.SERVER, "NAVI/1.1.4(UNIX)");
if (!HttpHeaders.isKeepAlive(request)
|| response.getStatus() != HttpResponseStatus.OK
|| ServerConfigure.isChannelClose()) {
response.headers().set(Names.CONNECTION, "close");
channel.setAttachment(WRITING);
ChannelFuture f = channel.write(response);
f.addListener(ChannelFutureListener.CLOSE);
f.addListener(
new ChannelFutureListener() {
public void operationComplete(ChannelFuture f) throws Exception {
if (!f.isSuccess()) {
log.error(f.getCause().getMessage(), f.getCause());
}
}
});
} else {
if (request.getProtocolVersion() == HttpVersion.HTTP_1_0) {
response.headers().add(Names.CONNECTION, "Keep-Alive");
}
channel.setAttachment(WRITING);
ChannelFuture f = channel.write(response);
f.addListener(ChannelFutureListener.CLOSE_ON_FAILURE);
f.addListener(
new ChannelFutureListener() {
public void operationComplete(ChannelFuture f) throws Exception {
if (!f.isSuccess()) {
log.error(f.getCause().getMessage(), f.getCause());
}
}
});
}
}
@Override
public void exceptionCaught(ChannelHandlerContext ctx, ExceptionEvent e) throws Exception {
Channel channel = ctx.getChannel();
if (channel.getAttachment() != null
&& (Error.class.isAssignableFrom(channel.getAttachment().getClass())
|| WRITING.equals(channel.getAttachment().toString()))) {
return;
}
if (!isReceived(ctx)) {
return;
}
try {
log.error(e.getCause().getMessage(), e.getCause());
channel.setAttachment(new Error());
DefaultHttpResponse response =
new DefaultHttpResponse(HttpVersion.HTTP_1_1, HttpResponseStatus.INTERNAL_SERVER_ERROR);
response.setContent(
ChannelBuffers.copiedBuffer(
response.getStatus().toString() + ":" + e.getCause().getMessage(),
CharsetUtil.UTF_8));
response.headers().set(Names.CONTENT_LENGTH, response.getContent().readableBytes());
response.headers().set(Names.SERVER, "NAVI/1.1.4(UNIX)");
response.headers().set(Names.CONNECTION, "close");
ChannelFuture f = channel.write(response);
f.addListener(ChannelFutureListener.CLOSE);
f.addListener(
new ChannelFutureListener() {
public void operationComplete(ChannelFuture f) throws Exception {
if (!f.isSuccess()) {
log.error(f.getCause().getMessage(), f.getCause());
}
}
});
} catch (Exception ex) {
log.error(e.getCause().getMessage(), e.getCause());
e.getFuture().addListener(ChannelFutureListener.CLOSE);
}
}
public File get() throws IOException {
ClientBootstrap bootstrap =
new ClientBootstrap(
new NioClientSocketChannelFactory(
Executors.newCachedThreadPool(), Executors.newCachedThreadPool()));
bootstrap.setOption("connectTimeoutMillis", 5000L); // set 5 sec
bootstrap.setOption("receiveBufferSize", 1048576); // set 1M
ChannelPipelineFactory factory = new HttpClientPipelineFactory(file);
bootstrap.setPipelineFactory(factory);
ChannelFuture future = bootstrap.connect(new InetSocketAddress(host, port));
// Wait until the connection attempt succeeds or fails.
Channel channel = future.awaitUninterruptibly().getChannel();
if (!future.isSuccess()) {
bootstrap.releaseExternalResources();
throw new IOException(future.getCause());
}
String query = uri.getPath() + (uri.getQuery() != null ? "?" + uri.getQuery() : "");
// Prepare the HTTP request.
HttpRequest request = new DefaultHttpRequest(HttpVersion.HTTP_1_1, HttpMethod.GET, query);
request.setHeader(HttpHeaders.Names.HOST, host);
LOG.info("Fetch: " + request.getUri());
request.setHeader(HttpHeaders.Names.CONNECTION, HttpHeaders.Values.CLOSE);
request.setHeader(HttpHeaders.Names.ACCEPT_ENCODING, HttpHeaders.Values.GZIP);
// Send the HTTP request.
channel.write(request);
// Wait for the server to close the connection.
channel.getCloseFuture().awaitUninterruptibly();
// Shut down executor threads to exit.
bootstrap.releaseExternalResources();
return file;
}
@Override
public void messageReceived(ChannelHandlerContext ctx, MessageEvent e) throws Exception {
HttpRequest request = (HttpRequest) e.getMessage();
if (request.getMethod() != GET) {
sendError(ctx, METHOD_NOT_ALLOWED);
return;
}
// Parsing the URL into key-values
final Map<String, List<String>> params =
new QueryStringDecoder(request.getUri()).getParameters();
final List<String> types = params.get("type");
final List<String> taskIdList = params.get("ta");
final List<String> subQueryIds = params.get("sid");
final List<String> partitionIds = params.get("p");
if (types == null || taskIdList == null || subQueryIds == null || partitionIds == null) {
sendError(ctx, "Required type, taskIds, subquery Id, and partition id", BAD_REQUEST);
return;
}
if (types.size() != 1 || subQueryIds.size() != 1) {
sendError(ctx, "Required type, taskIds, subquery Id, and partition id", BAD_REQUEST);
return;
}
final List<FileChunk> chunks = Lists.newArrayList();
String repartitionType = types.get(0);
String sid = subQueryIds.get(0);
String partitionId = partitionIds.get(0);
List<String> taskIds = splitMaps(taskIdList);
// the working dir of tajo worker for each query
String queryBaseDir = queryId + "/output" + "/";
LOG.info(
"PullServer request param: repartitionType="
+ repartitionType
+ ", sid="
+ sid
+ ", partitionId="
+ partitionId
+ ", taskIds="
+ taskIdList);
String taskLocalDir = conf.get(ConfVars.WORKER_TEMPORAL_DIR.varname);
if (taskLocalDir == null || taskLocalDir.equals("")) {
LOG.error("Tajo local directory should be specified.");
}
LOG.info("PullServer baseDir: " + taskLocalDir + "/" + queryBaseDir);
// if a subquery requires a range partitioning
if (repartitionType.equals("r")) {
String ta = taskIds.get(0);
Path path =
localFS.makeQualified(
lDirAlloc.getLocalPathToRead(
queryBaseDir + "/" + sid + "/" + ta + "/output/", conf));
String startKey = params.get("start").get(0);
String endKey = params.get("end").get(0);
boolean last = params.get("final") != null;
FileChunk chunk;
try {
chunk = getFileCunks(path, startKey, endKey, last);
} catch (Throwable t) {
LOG.error("ERROR Request: " + request.getUri(), t);
sendError(ctx, "Cannot get file chunks to be sent", BAD_REQUEST);
return;
}
if (chunk != null) {
chunks.add(chunk);
}
// if a subquery requires a hash repartition
} else if (repartitionType.equals("h")) {
for (String ta : taskIds) {
Path path =
localFS.makeQualified(
lDirAlloc.getLocalPathToRead(
queryBaseDir + "/" + sid + "/" + ta + "/output/" + partitionId, conf));
File file = new File(path.toUri());
FileChunk chunk = new FileChunk(file, 0, file.length());
chunks.add(chunk);
}
} else {
LOG.error("Unknown repartition type: " + repartitionType);
return;
}
// Write the content.
Channel ch = e.getChannel();
if (chunks.size() == 0) {
HttpResponse response = new DefaultHttpResponse(HTTP_1_1, NO_CONTENT);
ch.write(response);
if (!isKeepAlive(request)) {
ch.close();
}
} else {
FileChunk[] file = chunks.toArray(new FileChunk[chunks.size()]);
HttpResponse response = new DefaultHttpResponse(HTTP_1_1, OK);
long totalSize = 0;
for (FileChunk chunk : file) {
totalSize += chunk.length();
}
setContentLength(response, totalSize);
// Write the initial line and the header.
ch.write(response);
ChannelFuture writeFuture = null;
for (FileChunk chunk : file) {
writeFuture = sendFile(ctx, ch, chunk);
if (writeFuture == null) {
sendError(ctx, NOT_FOUND);
return;
}
}
// Decide whether to close the connection or not.
if (!isKeepAlive(request)) {
// Close the connection when the whole content is written out.
writeFuture.addListener(ChannelFutureListener.CLOSE);
}
}
}
public void serveStatic(
RenderStatic renderStatic,
ChannelHandlerContext ctx,
Request request,
Response response,
HttpRequest nettyRequest,
MessageEvent e) {
Logger.trace("serveStatic: begin");
HttpResponse nettyResponse =
new DefaultHttpResponse(HttpVersion.HTTP_1_1, HttpResponseStatus.valueOf(response.status));
if (exposePlayServer) {
nettyResponse.setHeader(SERVER, signature);
}
try {
VirtualFile file = Play.getVirtualFile(renderStatic.file);
if (file != null && file.exists() && file.isDirectory()) {
file = file.child("index.html");
if (file != null) {
renderStatic.file = file.relativePath();
}
}
if ((file == null || !file.exists())) {
serve404(
new NotFound("The file " + renderStatic.file + " does not exist"),
ctx,
request,
nettyRequest);
} else {
boolean raw = false;
for (PlayPlugin plugin : Play.plugins) {
if (plugin.serveStatic(file, Request.current(), Response.current())) {
raw = true;
break;
}
}
if (raw) {
copyResponse(ctx, request, response, nettyRequest);
} else {
final File localFile = file.getRealFile();
final boolean keepAlive = isKeepAlive(nettyRequest);
nettyResponse = addEtag(nettyRequest, nettyResponse, localFile);
if (nettyResponse.getStatus().equals(HttpResponseStatus.NOT_MODIFIED)) {
Channel ch = e.getChannel();
// Write the initial line and the header.
ChannelFuture writeFuture = ch.write(nettyResponse);
if (!keepAlive) {
// Write the content.
writeFuture.addListener(ChannelFutureListener.CLOSE);
}
} else {
final RandomAccessFile raf = new RandomAccessFile(localFile, "r");
try {
long fileLength = raf.length();
Logger.trace("keep alive " + keepAlive);
Logger.trace(
"content type " + (MimeTypes.getContentType(localFile.getName(), "text/plain")));
if (keepAlive && !nettyResponse.getStatus().equals(HttpResponseStatus.NOT_MODIFIED)) {
// Add 'Content-Length' header only for a keep-alive connection.
Logger.trace("file length " + fileLength);
setContentLength(nettyResponse, fileLength);
}
nettyResponse.setHeader(
CONTENT_TYPE, (MimeTypes.getContentType(localFile.getName(), "text/plain")));
Channel ch = e.getChannel();
// Write the initial line and the header.
ChannelFuture writeFuture = ch.write(nettyResponse);
// Write the content.
if (!nettyRequest.getMethod().equals(HttpMethod.HEAD)) {
writeFuture = ch.write(new ChunkedFile(raf, 0, fileLength, 8192));
} else {
raf.close();
}
if (!keepAlive) {
// Close the connection when the whole content is written out.
writeFuture.addListener(ChannelFutureListener.CLOSE);
}
} catch (Throwable exx) {
try {
raf.close();
} catch (Throwable ex) {
/* Left empty */
}
try {
ctx.getChannel().close();
} catch (Throwable ex) {
/* Left empty */
}
}
}
}
}
} catch (Throwable ez) {
Logger.error(ez, "serveStatic for request %s", request.method + " " + request.url);
try {
HttpResponse errorResponse =
new DefaultHttpResponse(HttpVersion.HTTP_1_1, HttpResponseStatus.INTERNAL_SERVER_ERROR);
ChannelBuffer buf =
ChannelBuffers.copiedBuffer("Internal Error (check logs)".getBytes("utf-8"));
errorResponse.setContent(buf);
ChannelFuture future = ctx.getChannel().write(errorResponse);
future.addListener(ChannelFutureListener.CLOSE);
} catch (Exception ex) {
Logger.error(ez, "serveStatic for request %s", request.method + " " + request.url);
}
}
Logger.trace("serveStatic: end");
}
public void copyResponse(
ChannelHandlerContext ctx, Request request, Response response, HttpRequest nettyRequest)
throws Exception {
Logger.trace("copyResponse: begin");
// response.out.flush();
// Decide whether to close the connection or not.
HttpResponse nettyResponse =
new DefaultHttpResponse(HttpVersion.HTTP_1_1, HttpResponseStatus.valueOf(response.status));
if (exposePlayServer) {
nettyResponse.setHeader(SERVER, signature);
}
if (response.contentType != null) {
nettyResponse.setHeader(
CONTENT_TYPE,
response.contentType
+ (response.contentType.startsWith("text/")
&& !response.contentType.contains("charset")
? "; charset=utf-8"
: ""));
} else {
nettyResponse.setHeader(CONTENT_TYPE, "text/plain; charset=utf-8");
}
addToResponse(response, nettyResponse);
final Object obj = response.direct;
File file = null;
ChunkedInput stream = null;
InputStream is = null;
if (obj instanceof File) {
file = (File) obj;
} else if (obj instanceof InputStream) {
is = (InputStream) obj;
} else if (obj instanceof ChunkedInput) {
stream = (ChunkedInput) obj;
}
final boolean keepAlive = isKeepAlive(nettyRequest);
if (file != null && file.isFile()) {
try {
nettyResponse = addEtag(nettyRequest, nettyResponse, file);
if (nettyResponse.getStatus().equals(HttpResponseStatus.NOT_MODIFIED)) {
Channel ch = ctx.getChannel();
// Write the initial line and the header.
ChannelFuture writeFuture = ch.write(nettyResponse);
if (!keepAlive) {
// Close the connection when the whole content is written out.
writeFuture.addListener(ChannelFutureListener.CLOSE);
}
} else {
nettyResponse.setHeader(
CONTENT_TYPE, MimeTypes.getContentType(file.getName(), "text/plain"));
final RandomAccessFile raf = new RandomAccessFile(file, "r");
try {
long fileLength = raf.length();
if (keepAlive) {
// Add 'Content-Length' header only for a keep-alive connection.
Logger.trace("file length is [" + fileLength + "]");
setContentLength(nettyResponse, fileLength);
}
Channel ch = ctx.getChannel();
// Write the initial line and the header.
ChannelFuture writeFuture = ch.write(nettyResponse);
// Write the content.
// If it is not a HEAD
if (!nettyRequest.getMethod().equals(HttpMethod.HEAD)) {
writeFuture = ch.write(new ChunkedFile(raf, 0, fileLength, 8192));
} else {
raf.close();
}
if (!keepAlive) {
// Close the connection when the whole content is written out.
writeFuture.addListener(ChannelFutureListener.CLOSE);
}
} catch (Throwable exx) {
try {
raf.close();
} catch (Throwable ex) {
/* Left empty */
}
try {
ctx.getChannel().close();
} catch (Throwable ex) {
/* Left empty */
}
}
}
} catch (Exception e) {
throw e;
}
} else if (is != null) {
ChannelFuture writeFuture = ctx.getChannel().write(nettyResponse);
if (!nettyRequest.getMethod().equals(HttpMethod.HEAD)
&& !nettyResponse.getStatus().equals(HttpResponseStatus.NOT_MODIFIED)) {
writeFuture = ctx.getChannel().write(new ChunkedStream(is));
} else {
is.close();
}
if (!keepAlive) {
writeFuture.addListener(ChannelFutureListener.CLOSE);
}
} else if (stream != null) {
ChannelFuture writeFuture = ctx.getChannel().write(nettyResponse);
if (!nettyRequest.getMethod().equals(HttpMethod.HEAD)
&& !nettyResponse.getStatus().equals(HttpResponseStatus.NOT_MODIFIED)) {
writeFuture = ctx.getChannel().write(stream);
} else {
stream.close();
}
if (!keepAlive) {
writeFuture.addListener(ChannelFutureListener.CLOSE);
}
} else {
writeResponse(ctx, response, nettyResponse, nettyRequest);
}
Logger.trace("copyResponse: end");
}
@Override
public void messageReceived(ChannelHandlerContext ctx, MessageEvent e) throws Exception {
HttpRequest request = (HttpRequest) e.getMessage();
if (request.getMethod() != GET) {
sendError(ctx, METHOD_NOT_ALLOWED);
return;
}
String base =
ContainerLocalizer.USERCACHE
+ "/"
+ userName
+ "/"
+ ContainerLocalizer.APPCACHE
+ "/"
+ appId
+ "/output"
+ "/";
final Map<String, List<String>> params =
new QueryStringDecoder(request.getUri()).getParameters();
List<FileChunk> chunks = Lists.newArrayList();
List<String> taskIds = splitMaps(params.get("ta"));
int sid = Integer.valueOf(params.get("sid").get(0));
int partitionId = Integer.valueOf(params.get("p").get(0));
for (String ta : taskIds) {
File file = new File(base + "/" + sid + "/" + ta + "/output/" + partitionId);
FileChunk chunk = new FileChunk(file, 0, file.length());
chunks.add(chunk);
}
FileChunk[] file = chunks.toArray(new FileChunk[chunks.size()]);
// try {
// file = retriever.handle(ctx, request);
// } catch (FileNotFoundException fnf) {
// LOG.error(fnf);
// sendError(ctx, NOT_FOUND);
// return;
// } catch (IllegalArgumentException iae) {
// LOG.error(iae);
// sendError(ctx, BAD_REQUEST);
// return;
// } catch (FileAccessForbiddenException fafe) {
// LOG.error(fafe);
// sendError(ctx, FORBIDDEN);
// return;
// } catch (IOException ioe) {
// LOG.error(ioe);
// sendError(ctx, INTERNAL_SERVER_ERROR);
// return;
// }
// Write the content.
Channel ch = e.getChannel();
if (file == null) {
HttpResponse response = new DefaultHttpResponse(HTTP_1_1, NO_CONTENT);
ch.write(response);
if (!isKeepAlive(request)) {
ch.close();
}
} else {
HttpResponse response = new DefaultHttpResponse(HTTP_1_1, OK);
long totalSize = 0;
for (FileChunk chunk : file) {
totalSize += chunk.length();
}
setContentLength(response, totalSize);
// Write the initial line and the header.
ch.write(response);
ChannelFuture writeFuture = null;
for (FileChunk chunk : file) {
writeFuture = sendFile(ctx, ch, chunk);
if (writeFuture == null) {
sendError(ctx, NOT_FOUND);
return;
}
}
// Decide whether to close the connection or not.
if (!isKeepAlive(request)) {
// Close the connection when the whole content is written out.
writeFuture.addListener(ChannelFutureListener.CLOSE);
}
}
}
