mirror of https://github.com/apache/cloudstack.git
70bd177064
There was a concurrency problem with the “moveNetworkAclItem” API method. If two users were changing the ACL rules order at the same time, this could lead to inconsistent actions. To solve the problem we added a “consistency check ” parameter, which is used to hold the consistency hash. This hash is created using an MD5 hash function on a String that is created with all ACL rules UUIDs concatenated in their order, which is defined via the ‘number’ field. We also lock the editing of the ACL while executing the upgrade. This allows us to handle race conditions nicely, and present a good feedback for the user. |
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