org.apache.hadoop.security.authentication.server

类 PseudoAuthenticationHandler

java.lang.Object

org.apache.hadoop.security.authentication.server.PseudoAuthenticationHandler

所有已实现的接口:

AuthenticationHandler

public class PseudoAuthenticationHandler
extends Object
implements AuthenticationHandler

The PseudoAuthenticationHandler provides a pseudo authentication mechanism that accepts the user name specified as a query string parameter.

This mimics the model of Hadoop Simple authentication which trust the 'user.name' property provided in the configuration object.

This handler can be configured to support anonymous users.

The only supported configuration property is:

• simple.anonymous.allowed: true|false, default value is false

字段概要

字段

限定符和类型	字段和说明
static String	ANONYMOUS_ALLOWED Constant for the configuration property that indicates if anonymous users are allowed.
static String	TYPE Constant that identifies the authentication mechanism.

构造器概要

构造器

构造器和说明
PseudoAuthenticationHandler()

方法概要

方法

限定符和类型	方法和说明
AuthenticationToken	authenticate(javax.servlet.http.HttpServletRequest request, javax.servlet.http.HttpServletResponse response) Authenticates an HTTP client request.
void	destroy() Releases any resources initialized by the authentication handler.
protected boolean	getAcceptAnonymous() Returns if the handler is configured to support anonymous users.
String	getType() Returns the authentication type of the authentication handler, 'simple'.
void	init(Properties config) Initializes the authentication handler instance.

从类继承的方法 java.lang.Object

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

字段详细资料

TYPE

public static final String TYPE

Constant that identifies the authentication mechanism.

另请参阅:

常量字段值

ANONYMOUS_ALLOWED

public static final String ANONYMOUS_ALLOWED

Constant for the configuration property that indicates if anonymous users are allowed.

另请参阅:

常量字段值

构造器详细资料

PseudoAuthenticationHandler

public PseudoAuthenticationHandler()

方法详细资料

init

public void init(Properties config)
          throws javax.servlet.ServletException

Initializes the authentication handler instance.

This method is invoked by the AuthenticationFilter.init(javax.servlet.FilterConfig) method.

指定者:

init 在接口中 AuthenticationHandler

参数:

config - configuration properties to initialize the handler.

抛出:

javax.servlet.ServletException - thrown if the handler could not be initialized.

getAcceptAnonymous

protected boolean getAcceptAnonymous()

Returns if the handler is configured to support anonymous users.

返回:

if the handler is configured to support anonymous users.

destroy

public void destroy()

Releases any resources initialized by the authentication handler.

This implementation does a NOP.

指定者:

destroy 在接口中 AuthenticationHandler

getType

public String getType()

Returns the authentication type of the authentication handler, 'simple'.

指定者:

getType 在接口中 AuthenticationHandler

返回:

the authentication type of the authentication handler, 'simple'.

authenticate

public AuthenticationToken authenticate(javax.servlet.http.HttpServletRequest request,
                               javax.servlet.http.HttpServletResponse response)
                                 throws IOException,
                                        AuthenticationException

Authenticates an HTTP client request.

It extracts the PseudoAuthenticator.USER_NAME parameter from the query string and creates an AuthenticationToken with it.

If the HTTP client request does not contain the PseudoAuthenticator.USER_NAME parameter and the handler is configured to allow anonymous users it returns the AuthenticationToken.ANONYMOUS token.

If the HTTP client request does not contain the PseudoAuthenticator.USER_NAME parameter and the handler is configured to disallow anonymous users it throws an AuthenticationException.

指定者:

authenticate 在接口中 AuthenticationHandler

参数:

request - the HTTP client request.

response - the HTTP client response.

返回:

an authentication token if the HTTP client request is accepted and credentials are valid.

抛出:

IOException - thrown if an IO error occurred.

AuthenticationException - thrown if HTTP client request was not accepted as an authentication request.