org.eclipse.jetty.security

## Interface IdentityService

- All Known Implementing Classes:
    DefaultIdentityService

      public interface IdentityService

  Associates UserIdentities from with threads and UserIdentity.Contexts.

- - ### Field Summary

    Fields
    Modifier and Type | Field and Description
    --- | ---
    `static String[]` | `NO_ROLES`

  - ### Method Summary

    Methods
    Modifier and Type | Method and Description
    --- | ---
    `Object` | `associate(UserIdentity user)` Associate a user identity with the current thread.
    `void` | `disassociate(Object previous)` Disassociate the user identity from the current thread and restore previous identity.
    `UserIdentity` | `getSystemUserIdentity()`
    `RunAsToken` | `newRunAsToken(String runAsName)` Create a new RunAsToken from a runAsName (normally a role).
    `UserIdentity` | `newUserIdentity(Subject subject, Principal userPrincipal, String[] roles)` Create a new UserIdentity for use with this identity service.
    `Object` | `setRunAs(UserIdentity user, RunAsToken token)` Associate a runas Token with the current user and thread.
    `void` | `unsetRunAs(Object token)` Disassociate the current runAsToken from the thread and reassociate the previous token.

- - ### Field Detail

    - #### NO_ROLES

          static final String[] NO_ROLES

  - ### Method Detail

    - #### associate

          Object associate(UserIdentity user)

      Associate a user identity with the current thread. This is called with as a thread enters the `SecurityHandler.handle(String, Request, javax.servlet.http.HttpServletRequest, javax.servlet.http.HttpServletResponse)` method and then again with a null argument as that call exits.
      Parameters:
        `user` - The current user or null for no user to associated.
      Returns:
        an object representing the previous associated state

    - #### disassociate

          void disassociate(Object previous)

      Disassociate the user identity from the current thread and restore previous identity.
      Parameters:
        `previous` - The opaque object returned from a call to `associate(UserIdentity)`

    - #### setRunAs

          Object setRunAs(UserIdentity user,
                        RunAsToken token)

      Associate a runas Token with the current user and thread.
      Parameters:
        `user` - The UserIdentity
        `token` - The runAsToken to associate.
      Returns:
        The previous runAsToken or null.

    - #### unsetRunAs

          void unsetRunAs(Object token)

      Disassociate the current runAsToken from the thread and reassociate the previous token.
      Parameters:
        `token` - RUNAS returned from previous associateRunAs call

    - #### newUserIdentity

          UserIdentity newUserIdentity(Subject subject,
                                     Principal userPrincipal,
                                     String[] roles)

      Create a new UserIdentity for use with this identity service. The UserIdentity should be immutable and able to be cached.
      Parameters:
        `subject` - Subject to include in UserIdentity
        `userPrincipal` - Principal to include in UserIdentity. This will be returned from getUserPrincipal calls
        `roles` - set of roles to include in UserIdentity.
      Returns:
        A new immutable UserIdententity

    - #### newRunAsToken

          RunAsToken newRunAsToken(String runAsName)

      Create a new RunAsToken from a runAsName (normally a role).
      Parameters:
        `runAsName` - Normally a role name
      Returns:
        A new immutable RunAsToken

    - #### getSystemUserIdentity

          UserIdentity getSystemUserIdentity()

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