How to use

getRemoteAddr

method

in

org.apache.hadoop.hdfs.server.common.JspHelper

public NamenodeWebHdfsMethods(@Context HttpServletRequest request) {
 // the request object is a proxy to thread-locals so we have to extract
 // what we want from it since the external call will be processed in a
 // different thread.
 scheme = request.getScheme();
 userPrincipal = request.getUserPrincipal();
 // get the remote address, if coming in via a trusted proxy server then
 // the address with be that of the proxied client
 remoteAddr = JspHelper.getRemoteAddr(request);
 supportEZ =
   Boolean.valueOf(request.getHeader(WebHdfsFileSystem.EZ_HEADER));
}

ProxyUsers.authorize(ugi, getRemoteAddr(request));

private void init(final UserGroupInformation ugi,
  final DelegationParam delegation,
  final UserParam username, final DoAsParam doAsUser,
  final UriFsPathParam path, final HttpOpParam<?> op,
  final Param<?, ?>... parameters) {
 if (LOG.isTraceEnabled()) {
  LOG.trace("HTTP " + op.getValue().getType() + ": " + op + ", " + path
    + ", ugi=" + ugi + ", " + username + ", " + doAsUser
    + Param.toSortedString(", ", parameters));
 }
 //clear content type
 response.setContentType(null);
 
 // set the remote address, if coming in via a trust proxy server then
 // the address with be that of the proxied client
 REMOTE_ADDRESS.set(JspHelper.getRemoteAddr(request));
}

 private String getRemoteAddr(String clientAddr, String proxyAddr, boolean trusted) {
  HttpServletRequest req = mock(HttpServletRequest.class);
  when(req.getRemoteAddr()).thenReturn("1.2.3.4");

  Configuration conf = new Configuration();
  if (proxyAddr == null) {
   when(req.getRemoteAddr()).thenReturn(clientAddr);
  } else {
   when(req.getRemoteAddr()).thenReturn(proxyAddr);
   when(req.getHeader("X-Forwarded-For")).thenReturn(clientAddr);
   if (trusted) {
    conf.set(ProxyServers.CONF_HADOOP_PROXYSERVERS, proxyAddr);
   }
  }
  ProxyUsers.refreshSuperUserGroupsConfiguration(conf);
  return JspHelper.getRemoteAddr(req);
 }
}

private void init(final UserGroupInformation ugi,
  final DelegationParam delegation,
  final UserParam username, final DoAsParam doAsUser,
  final UriFsPathParam path, final HttpOpParam<?> op,
  final Param<?, ?>... parameters) {
 if (LOG.isTraceEnabled()) {
  LOG.trace("HTTP " + op.getValue().getType() + ": " + op + ", " + path
    + ", ugi=" + ugi + ", " + username + ", " + doAsUser
    + Param.toSortedString(", ", parameters));
 }
 //clear content type
 response.setContentType(null);
 
 // set the remote address, if coming in via a trust proxy server then
 // the address with be that of the proxied client
 REMOTE_ADDRESS.set(JspHelper.getRemoteAddr(request));
}

ProxyUsers.authorize(ugi, getRemoteAddr(request));

ProxyUsers.authorize(ugi, getRemoteAddr(request));