Hi Manoj,
Thanks for your help on this. So I need some direction with regards to how
to access and use the cache.
I've configured by webapp with the following ini snippet:
cassandraRealm = com.structuredcode.web.MyRealm
securityManager.realms = $cassandraRealm
cacheManager = org.apache.shiro.cache.ehcache.EhCacheManager
securityManager.cacheManager = $cacheManager
So in my servlet, I'm upding the permissions using my DAO, as you've
desribed, but at that point, I don't know how to obtain my cache manager
instance. I've looked through the API documentation for the
SecurityManager and Subject classes thinking I could obtain the cache
manager through of these objects, but Idon't see an API call for this.
What am I missing?
Thank you!
James
----- Original Message -----
From: "Manoj Khangaonkar" <[email protected]>
To: <[email protected]>
Sent: Tuesday, December 13, 2011 9:36 PM
Subject: Re: How to force reauthorization.
Hi James,
You don'nt need to do this using the REALM.
The DAO that writes the permission to database is outside the scope of
Shiro. After writing to database,
this DAO can either update the cache or evict the item from the cache.
Manoj
On Tue, Dec 13, 2011 at 5:50 PM, James Whetstone
<[email protected]> wrote:
That makes sense. But I'm unclear no how to obtain an instance of my realm
implementation (which extends AuthorizingRealm) because I don't know how
the
realm manages the cache.
In other words, do I need to make my realm a singleton? Or is it ok to
just
create a new one wherever I need to (and the cache automatically uses the
cache manager I specified in my ini file)?
Also, once I get my instance of the AuthorizingRealm, I'm unclear on how
to
update or clear the AuthorizationInfo for a particular subject because the
API calls that look like what I need are protected. E.g.
clearCachedAuthorizationInfo() is protected.
I'm thinking I need to create a custom method on my realm that invalidates
the AuthorizationInfo for the given subject.
Can anyone advise me on how to best implement this given Shiro's design?
---James
----- Original Message ----- From: "Manoj Khangaonkar"
<[email protected]>
To: <[email protected]>
Sent: Tuesday, December 13, 2011 12:07 PM
Subject: Re: How to force reauthorization.
Hi James,
If your AuthorizationInfo is cached, you might need to update the cache
when
new permissions are created for the principal.
Manoj
On Mon, Dec 12, 2011 at 9:31 PM, James Whetstone
<[email protected]> wrote:
Hi everyone,
My web app allows users to create resources dynamically through a web
service. When this occurs, the user that is adding the new resource gets
permission to read the resource.
For example, the use that add the new resource will be given the
following
permission: "my_resource_type:read:a1cd6635-42a9-4528-bddf-4c994c58cf9a".
The permissions are stored as strings in the database.
So my problem is that if the user tries to read the resource immediately
following the creation of the resource, the user is denied because the
user
has already been authorized through my custom realm and the new
permission
hasn't been processed out of the database as would normally occur when
user
authorization occurs.
So I'm wondering if there is a way to force reauthorization, or otherwise
handle this type of dynamic update to permissions, maybe by updating the
Subject's authorization info dynamically.
Thank you!
James
--
http://khangaonkar.blogspot.com/
--
http://khangaonkar.blogspot.com/
