I'm not sure exactly what you're trying to do, but in the past I'm used an 
embedded Felix instance with a single 'management' bundle running at start 
level 1 which was then able to download and deploy all of the other bundles in 
my system at start levels > 1.

In this setup, all I needed to do was to drop the platform start level to 1 
which had the effect of calling stop() on all of the installed bundles. In this 
state you can then uninstall and bundles to be updated, then just set the start 
level back up to the default.

On 14 May 2013, at 12:17, Dan Gravell <[email protected]> wrote:

> Hi all. After giving it about a year of tweaks, I'm finally going to give
> up trying to update my OSGi app in process. The killer is the requirement
> to stop all threads... for my particular requirements this just isn't
> feasible. I have to maintain my own forks of projects, some complex (the
> Lift web framework) and some less so (JNotify) and this just takes too long.
> 
> So I'm putting thought to how I can structure a solution that restarts the
> JVM *at some point*. I am using Felix 'bundlerepository' bundle to perform
> the deployments of bundles.
> 
> So first, the requirement to stop threads: is this a requirement *before*
> start(), stop() or update(URL) is called?
> 
> If it's only something that has to be done before stop() then I _could_ do
> everything I do now, up to when start() is called on each bundle. At that
> point, I could exit with an exit code and my launcher script checks that
> and, if it's a known value, restarts the same process. In this case, I
> would have to re-start the bundles on restart.
> 
> If threads have to be stopped before the update itself, then I suppose I
> can download the bundles to a holding area, and have a bootstrap JVM that
> picks them up and somehow performs the update, and then starts.
> 
> If anyone has any wisdom or experience of this I would be grateful to hear
> it...
> 
> Dan




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