```
public interface Authorizer
```
Provides the interface for authorizing a user per request.
Gremlin Server creates one Authorizer instance and may call its authorize() methods concurrently for requests on different channels. Implementations are expected to be thread-safe and must not retain request-specific state in shared mutable fields. The setup(Map) method is called once and completes before request processing begins.

Author:

Marc de Lignie

Method Summary

All Methods Instance Methods Abstract Methods
Modifier and Type	Method	Description
`Bytecode`	`authorize(AuthenticatedUser user, Bytecode bytecode, Map<String,String> aliases)`	Checks whether a user is authorized to have a gremlin bytecode request from a client answered and raises an `AuthorizationException` if this is not the case.
`void`	`authorize(AuthenticatedUser user, RequestMessage msg)`	Checks whether a user is authorized to have a script request from a gremlin client answered and raises an `AuthorizationException` if this is not the case.
`void`	`setup(Map<String,Object> config)`	This method is called once upon system startup to initialize the `Authorizer`.

- Method Detail
  - setup
```
void setup(Map<String,Object> config)
    throws AuthorizationException
```
    This method is called once upon system startup to initialize the Authorizer.
    
    Throws:
    
    AuthorizationException
  - authorize
```
Bytecode authorize(AuthenticatedUser user,
                   Bytecode bytecode,
                   Map<String,String> aliases)
            throws AuthorizationException
```
    Checks whether a user is authorized to have a gremlin bytecode request from a client answered and raises an AuthorizationException if this is not the case. The returned bytecde is used for further processing of the request.
    
    Parameters:
    
    user - AuthenticatedUser that needs authorization.
    
    bytecode - The gremlin Bytecode request to authorize the user for.
    
    aliases - A Map with a single key/value pair that maps the name of the TraversalSource in the Bytecode request to name of one configured in Gremlin Server.
    
    Returns:
    
    The original or modified Bytecode to be used for further processing.
    
    Throws:
    
    AuthorizationException
  - authorize
```
void authorize(AuthenticatedUser user,
               RequestMessage msg)
        throws AuthorizationException
```
    Checks whether a user is authorized to have a script request from a gremlin client answered and raises an AuthorizationException if this is not the case.
    
    Parameters:
    
    user - AuthenticatedUser that needs authorization.
    
    msg - RequestMessage in which the Tokens.ARGS_GREMLIN argument can contain an arbitrary succession of script statements.
    
    Throws:
    
    AuthorizationException

Interface Authorizer

Method Summary

Method Detail

setup

authorize

authorize