Fix FlexibleAuthorizationPolicyProvider thread safety #6
Conversation
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment
Add this suggestion to a batch that can be applied as a single commit.
This suggestion is invalid because no changes were made to the code.
Suggestions cannot be applied while the pull request is closed.
Suggestions cannot be applied while viewing a subset of changes.
Only one suggestion per line can be applied in a batch.
Add this suggestion to a batch that can be applied as a single commit.
Applying suggestions on deleted lines is not supported.
You must change the existing code in this line in order to create a valid suggestion.
Outdated suggestions cannot be applied.
This suggestion has been applied or marked resolved.
Suggestions cannot be applied from pending reviews.
Suggestions cannot be applied on multi-line comments.
Suggestions cannot be applied while the pull request is queued to merge.
Suggestion cannot be applied right now. Please check back later.
AuthorizationOptions.AddPolicy isn't thread safe (source)
Since FlexibleAuthorizationPolicyProvider is registered as singleton, it should avoid invoking AuthorizationOptions.AddPolicy
The current PR adds a ConcurrentDictionary to cache locally all the policies for the flexible authorization. The GetOrAdd method on the dictionary won't guarantee that the factory will be called just once but such operation isn't expensive and shouldn't cause any problem (see).
At the same time I've changed the fallback to base.GetPolicyAsync to be invoked only when it's not a flexible authorization policy.