This is a Beanstalk post-receive hook that will automatically close review requests as "submitted" after a push. To determine which review requests should be closed, it scans through each commit's commit message for the following strings (case-insensitive): "Reviewed at <reviewboard_url>/r/<id>" or "Review request #<id>".
This is what the JSON payload looks like:

http://support.beanstalkapp.com/customer/portal/articles/75753-trigger-a-url-on-commit-with-web-hooks

Test carried out on git and svn repos.
1) Push with the review request id in the commit message. Review request closed. [PASSED]

2) Push without a review request id in the commit message. (Review request closed based on the commit_id for git and error looged for svn) [PASSED].

3) Push with non existent review request id. (Error: Review request does not exist) [PASSED]

4) Push with review id in the message that is already submitted. (logged a warning: request id already submitted.) [PASSED]

5) Push with review id in the message that has been marked as discarded. (review request marked as submitted.) [PASSED]