IAutoCredentials (Storm 2.7.1 API)

All Known Implementing Classes:

AbstractHadoopAutoCreds, AutoHBase, AutoHDFS, AutoHive, AutoSSL, AutoTGT
```
public interface IAutoCredentials
```
Provides a way to automatically push credentials to a topology and to retrieve them in the worker.

Method Summary

All Methods Instance Methods Abstract Methods
Modifier and Type	Method	Description
`void`	`populateCredentials(Map<String,String> credentials)`	Called to populate the credentials on the client side.
`void`	`populateSubject(Subject subject, Map<String,String> credentials)`	Called to initially populate the subject on the worker side with credentials passed in.
`void`	`prepare(Map<String,Object> conf)`
`void`	`updateSubject(Subject subject, Map<String,String> credentials)`	Called to update the subject on the worker side when new credentials are recieved.

- Method Detail
  - prepare
```
void prepare(Map<String,Object> conf)
```
  - populateCredentials
```
void populateCredentials(Map<String,String> credentials)
```
    Called to populate the credentials on the client side.
    
    Parameters:
    
    credentials - the credentials to be populated.
  - populateSubject
```
void populateSubject(Subject subject,
                     Map<String,String> credentials)
```
    Called to initially populate the subject on the worker side with credentials passed in.
    
    Parameters:
    
    subject - the subject to optionally put credentials in.
    
    credentials - the credentials to be used.
  - updateSubject
```
void updateSubject(Subject subject,
                   Map<String,String> credentials)
```
    Called to update the subject on the worker side when new credentials are recieved. This means that populateSubject has already been called on this subject.
    
    Parameters:
    
    subject - the subject to optionally put credentials in.
    
    credentials - the credentials to be used.