/** Create a URI for redirecting request */
protected URI createRedirectUri(
String servletpath,
UserGroupInformation ugi,
DatanodeID host,
HttpServletRequest request,
String tokenString)
throws URISyntaxException {
final String hostname =
host instanceof DatanodeInfo ? ((DatanodeInfo) host).getHostName() : host.getHost();
final String scheme = request.getScheme();
final int port =
"https".equals(scheme)
? (Integer) getServletContext().getAttribute("datanode.https.port")
: host.getInfoPort();
final String filename = request.getPathInfo();
String dt = "";
if (tokenString != null) {
dt = JspHelper.getDelegationTokenUrlParam(tokenString);
}
return new URI(
scheme,
null,
hostname,
port,
servletpath,
"filename=" + filename + "&ugi=" + ugi.getShortUserName() + dt,
null);
}
/** Create a redirection URL */
private URL createRedirectURL(
String path,
String encodedPath,
HdfsFileStatus status,
UserGroupInformation ugi,
ClientProtocol nnproxy,
HttpServletRequest request,
String dt)
throws IOException {
String scheme = request.getScheme();
final LocatedBlocks blks =
nnproxy.getBlockLocations(status.getFullPath(new Path(path)).toUri().getPath(), 0, 1);
final Configuration conf = NameNodeHttpServer.getConfFromContext(getServletContext());
final DatanodeID host = pickSrcDatanode(blks, status, conf);
final String hostname;
if (host instanceof DatanodeInfo) {
hostname = host.getHostName();
} else {
hostname = host.getIpAddr();
}
int port = "https".equals(scheme) ? host.getInfoSecurePort() : host.getInfoPort();
String dtParam = "";
if (dt != null) {
dtParam = JspHelper.getDelegationTokenUrlParam(dt);
}
// Add namenode address to the url params
NameNode nn = NameNodeHttpServer.getNameNodeFromContext(getServletContext());
String addr = nn.getNameNodeAddressHostPortString();
String addrParam = JspHelper.getUrlParam(JspHelper.NAMENODE_ADDRESS, addr);
return new URL(
scheme,
hostname,
port,
"/streamFile"
+ encodedPath
+ '?'
+ "ugi="
+ ServletUtil.encodeQueryValue(ugi.getShortUserName())
+ dtParam
+ addrParam);
}
