org.apache.ambari.server.view

Class HttpImpersonatorImpl

java.lang.Object

org.apache.ambari.server.view.HttpImpersonatorImpl

All Implemented Interfaces:

org.apache.ambari.view.HttpImpersonator

public class HttpImpersonatorImpl
extends Object
implements org.apache.ambari.view.HttpImpersonator

Class for Ambari to impersonate users over HTTP request. This is handy for Views like Jobs that needs to query ATS via HTTP Get requests and impersonate the currently logged on user. Or a file browser view that needs to use WebHDFS with the credentials of the current user.

Constructor Summary

Constructors

Constructor and Description
HttpImpersonatorImpl(org.apache.ambari.view.ViewContext c)
HttpImpersonatorImpl(org.apache.ambari.view.ViewContext c, URLStreamProvider urlStreamProvider)

Method Summary

Modifier and Type	Method and Description
HttpURLConnection	doAs(HttpURLConnection conn, String type)
HttpURLConnection	doAs(HttpURLConnection conn, String type, String username, String doAsParamName)
org.apache.ambari.view.ViewContext	getContext()
String	getUsername()
String	requestURL(String url, String requestType, org.apache.ambari.view.ImpersonatorSetting impersonatorSetting) Returns the result of the HTTP request by setting the "doAs" impersonation for the query param and username in @param impersonatorSetting.

Methods inherited from class java.lang.Object

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

Constructor Detail

HttpImpersonatorImpl

public HttpImpersonatorImpl(org.apache.ambari.view.ViewContext c)

HttpImpersonatorImpl

public HttpImpersonatorImpl(org.apache.ambari.view.ViewContext c,
                            URLStreamProvider urlStreamProvider)

Method Detail

getContext

public org.apache.ambari.view.ViewContext getContext()

getUsername

public String getUsername()

doAs

public HttpURLConnection doAs(HttpURLConnection conn,
                              String type)

Specified by:

doAs in interface org.apache.ambari.view.HttpImpersonator

Parameters:

conn - HTTP connection that will be modified and returned

type - HTTP Request type: GET, PUT, POST, DELETE, etc.

Returns:

HTTP Connection object with the "doAs" query param set to the currently logged on user.

doAs

public HttpURLConnection doAs(HttpURLConnection conn,
                              String type,
                              String username,
                              String doAsParamName)

Specified by:

doAs in interface org.apache.ambari.view.HttpImpersonator

Parameters:

conn - HTTP connection that will be modified and returned

type - HTTP Request type: GET, PUT, POST, DELETE, etc.

username - Username to impersonate

doAsParamName - Query param, typically "doAs"

Returns:

HTTP Connection object with the doAs query param set to the provider username.

requestURL

public String requestURL(String url,
                         String requestType,
                         org.apache.ambari.view.ImpersonatorSetting impersonatorSetting)

Returns the result of the HTTP request by setting the "doAs" impersonation for the query param and username in @param impersonatorSetting.

Specified by:

requestURL in interface org.apache.ambari.view.HttpImpersonator

Parameters:

url - URL to request

requestType - HTTP Request type: GET, PUT, POST, DELETE, etc.

impersonatorSetting - Setting class with default values for username and doAs param name. To use different values, call the setters of the object.

Returns:

Return a response as a String