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java.lang.Objectorg.apache.hadoop.hdfs.security.AccessTokenHandler
@InterfaceAudience.Private public class AccessTokenHandler
AccessTokenHandler can be instantiated in 2 modes, master mode and slave mode. Master can generate new access keys and export access keys to slaves, while slaves can only import and use access keys received from master. Both master and slave can generate and verify access tokens. Typically, master mode is used by NN and slave mode is used by DN.
Nested Class Summary | |
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static class |
AccessTokenHandler.AccessMode
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Constructor Summary | |
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AccessTokenHandler(boolean isMaster,
long keyUpdateInterval,
long tokenLifetime)
Constructor |
Method Summary | |
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boolean |
checkAccess(BlockAccessToken token,
String userID,
long blockID,
AccessTokenHandler.AccessMode mode)
Check if access should be allowed. |
ExportedAccessKeys |
exportKeys()
Export access keys, only to be used in master mode |
BlockAccessToken |
generateToken(long blockID,
EnumSet<AccessTokenHandler.AccessMode> modes)
Generate an access token for current user |
BlockAccessToken |
generateToken(String userID,
long blockID,
EnumSet<AccessTokenHandler.AccessMode> modes)
Generate an access token for a specified user |
void |
setKeys(ExportedAccessKeys exportedKeys)
Set access keys, only to be used in slave mode |
void |
updateKeys()
Update access keys, only to be used in master mode |
Methods inherited from class java.lang.Object |
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clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
Constructor Detail |
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public AccessTokenHandler(boolean isMaster, long keyUpdateInterval, long tokenLifetime) throws IOException
isMaster
- keyUpdateInterval
- tokenLifetime
-
IOException
Method Detail |
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public ExportedAccessKeys exportKeys()
public void setKeys(ExportedAccessKeys exportedKeys) throws IOException
IOException
public void updateKeys() throws IOException
IOException
public BlockAccessToken generateToken(long blockID, EnumSet<AccessTokenHandler.AccessMode> modes) throws IOException
IOException
public BlockAccessToken generateToken(String userID, long blockID, EnumSet<AccessTokenHandler.AccessMode> modes) throws IOException
IOException
public boolean checkAccess(BlockAccessToken token, String userID, long blockID, AccessTokenHandler.AccessMode mode) throws IOException
IOException
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