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Posted to dev@sling.apache.org by "Robert Munteanu (JIRA)" <ji...@apache.org> on 2015/02/19 15:15:11 UTC

[jira] [Updated] (SLING-4438) Don't execute duplicate or out-of-order commands

     [ https://issues.apache.org/jira/browse/SLING-4438?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Robert Munteanu updated SLING-4438:
-----------------------------------
    Description: 
Content sync operations work through commands created on demand by SlingLaunchpadBehaviour.

Right now the order is ad-hoc and there is no guarantee that duplicate or redundant commands are not executed. Some examples:

- Trying to add an sling:Folder resource twice since it seems both the directory and the .content.xml file as changed
- Deleting a path attempts to delete the parent _and_ all children nodes

We also have some akwardness to make sure that SLING-3741 works as expected, see https://svn.apache.org/r1660881 .

The fix would be to have generate the commands, pass them to a provider-specific command queue, which insures that the above cases are handled as expected and then execute the commands in the order returned by the queue.

A nice side-effect is that we can rely on the number of events generated, and can use that for wait for events to settle in tests, instead of hard-coding wait times.

  was:
Content sync operations work through commands created on demand by SlingLaunchpadBehaviour.

Right now the order is ad-hoc and there is no guarantee that duplicate or redundant commands are not executed. Some examples:

- Trying to add an sling:Folder resource twice since it seems both the directory and the .content.xml file as changed
- Deleting a path attempts to delete the parent _and_ all children nodes

We also have some akwardness to make sure that SLING-3741 works as expected, see https://svn.apache.org/r1660881 .

The fix would be to have generate the commands, pass them to a provider-specific command queue, which insures that the above cases are handled as expected and then execute the commands in the order returned by the queue.


> Don't execute duplicate or out-of-order commands
> ------------------------------------------------
>
>                 Key: SLING-4438
>                 URL: https://issues.apache.org/jira/browse/SLING-4438
>             Project: Sling
>          Issue Type: Bug
>          Components: IDE
>    Affects Versions: Sling Eclipse IDE 1.0.4
>            Reporter: Robert Munteanu
>            Priority: Critical
>             Fix For: Sling Eclipse IDE 1.1.0
>
>
> Content sync operations work through commands created on demand by SlingLaunchpadBehaviour.
> Right now the order is ad-hoc and there is no guarantee that duplicate or redundant commands are not executed. Some examples:
> - Trying to add an sling:Folder resource twice since it seems both the directory and the .content.xml file as changed
> - Deleting a path attempts to delete the parent _and_ all children nodes
> We also have some akwardness to make sure that SLING-3741 works as expected, see https://svn.apache.org/r1660881 .
> The fix would be to have generate the commands, pass them to a provider-specific command queue, which insures that the above cases are handled as expected and then execute the commands in the order returned by the queue.
> A nice side-effect is that we can rely on the number of events generated, and can use that for wait for events to settle in tests, instead of hard-coding wait times.



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