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From neykov <...@git.apache.org>
Subject [GitHub] brooklyn-server pull request #520: Limit parallelism of start/stop steps on ...
Date Mon, 16 Jan 2017 16:50:57 GMT
GitHub user neykov opened a pull request:

    https://github.com/apache/brooklyn-server/pull/520

    Limit parallelism of start/stop steps on SoftwareProcess

    Setting a `ReleaseableLatch` as the latch of a `SoftwareProcess` allows for controlling
the behaviour of the start/stop effector.
    When `ReleaseableLatch.Factory.maxConcurrency(int)` is used as the value of the latch
(either directly or by referncing a `MaxConcurrencySensor`) only the specified maximum number
of threads will be able to execute the immediate step the latch is guarding.
    
    It's very similar to `DynamicCluster.MAX_CONCURRENT_CHILD_COMMANDS` but allows for finer-grained
control (though is specific to `SoftwareProcess`).


You can merge this pull request into a Git repository by running:

    $ git pull https://github.com/neykov/brooklyn-server max-concurrency

Alternatively you can review and apply these changes as the patch at:

    https://github.com/apache/brooklyn-server/pull/520.patch

To close this pull request, make a commit to your master/trunk branch
with (at least) the following in the commit message:

    This closes #520
    
----
commit 112269ae484dcc5283d9cabc8de2e987f013e79f
Author: Svetoslav Neykov <svetoslav.neykov@cloudsoftcorp.com>
Date:   2017-01-16T16:37:46Z

    Add iterator to ValueResolver
    
    Resolves the initial object iteratively until either failure or object can't be resolved
any more.

commit b7b5ab25a0c483b9c97d03404db2cad40a5485a4
Author: Svetoslav Neykov <svetoslav.neykov@cloudsoftcorp.com>
Date:   2017-01-16T16:40:55Z

    Let latches limit the paralellism for the step they guard

----


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