org.apache.hadoop.security
Class ShellBasedIdMapping

java.lang.Object
  org.apache.hadoop.security.ShellBasedIdMapping

All Implemented Interfaces:

IdMappingServiceProvider

public class ShellBasedIdMapping
extends Object
implements IdMappingServiceProvider

A simple shell-based implementation of IdMappingServiceProvider Map id to user name or group name. It does update every 15 minutes. Only a single instance of this class is expected to be on the server.

Constructor Summary

ShellBasedIdMapping(Configuration conf)

ShellBasedIdMapping(Configuration conf, String defaultStaticIdMappingFile)

Method Summary

int	getGid(String group)
int	getGidAllowingUnknown(String group)
String	getGroupName(int gid, String unknown)
long	getTimeout()
int	getUid(String user)
int	getUidAllowingUnknown(String user)
String	getUserName(int uid, String unknown)
static void	updateMapInternal(com.google.common.collect.BiMap<Integer,String> map, String mapName, String command, String regex, Map<Integer,Integer> staticMapping) Get the whole list of users and groups and save them in the maps.
void	updateMaps()

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

ShellBasedIdMapping

public ShellBasedIdMapping(Configuration conf,
                           String defaultStaticIdMappingFile)
                    throws IOException

Throws:

IOException

ShellBasedIdMapping

public ShellBasedIdMapping(Configuration conf)
                    throws IOException

Throws:

IOException

Method Detail

getTimeout

public long getTimeout()

updateMapInternal

public static void updateMapInternal(com.google.common.collect.BiMap<Integer,String> map,
                                     String mapName,
                                     String command,
                                     String regex,
                                     Map<Integer,Integer> staticMapping)
                              throws IOException

Get the whole list of users and groups and save them in the maps.

Throws:

IOException

updateMaps

public void updateMaps()
                throws IOException

Throws:

IOException

getUid

public int getUid(String user)
           throws IOException

Specified by:

getUid in interface IdMappingServiceProvider

Throws:

IOException

getGid

public int getGid(String group)
           throws IOException

Specified by:

getGid in interface IdMappingServiceProvider

Throws:

IOException

getUserName

public String getUserName(int uid,
                          String unknown)

Specified by:

getUserName in interface IdMappingServiceProvider

getGroupName

public String getGroupName(int gid,
                           String unknown)

Specified by:

getGroupName in interface IdMappingServiceProvider

getUidAllowingUnknown

public int getUidAllowingUnknown(String user)

Specified by:

getUidAllowingUnknown in interface IdMappingServiceProvider

getGidAllowingUnknown

public int getGidAllowingUnknown(String group)

Specified by:

getGidAllowingUnknown in interface IdMappingServiceProvider