Thanks JB. The programming interface to feature:install is what we require , so that we can get the output of the simulation in a stream or a data structure and parse it to check whether the feature:install would have any upgrades.
I suppose I can go to the git repository and get the commands and tests around the service to get some samples to work with... Will check that out. Is there any other sample that you would suggest ? Regards Hari On Tue, Nov 22, 2016 at 5:21 PM, Jean-Baptiste Onofré <j...@nanthrax.net> wrote: > Hi Hari, > > feature:repo-refresh will reload the features XML if it has changed. > However, the feature might be updated even if the features XML didn't > change (for instance if you use SNAPSHOT in the feature). > > So, basically, we don't have an event today providing the "diff" between > an installed feature and the resolved feature. > > feature:install -u with -t -v is possible and should provide the details > that you can parse. > > Do you want to do it programmatically or by "scripting" ? > > For the second point, you can call the feature service to get details, > providing the same as in the feature:install command (which actually use > the feature service). > > Regards > JB > > On 11/22/2016 12:32 PM, Hari Madhavan wrote: > >> Hi All, >> >> We use OSGi with Karaf for a secure and reliable message delivery >> product that is deployed on end-user desktops ( as opposed to servers ) >> . One of the things that is important is to have seamless auto-upgrades >> of the product as new versions are published. There are 2 requirements >> that we had for which I wanted to understand the best solution. >> >> * We had decided to stop all activity in the product before starting >> the upgrade. This would cause a small delay for the end-user but as >> upgrades do not happen often it is acceptable as long as we do it >> only during upgrades. The process that we would follow is as follows >> o Check if there is an update available for a feature >> o If updates are available >> + complete currently running transactions >> + shutdown all services >> + pull down the updates from the server ( Nexus ) >> + install the updates >> >> How can we find whether there is an feature upgrade to be installed >> ? Is there an event on feature:repo-refresh that we can bind to >> which will tell us that the feature has an upgrade ? Alternatively >> can we invoke feature:install when it runs with -t -v parameters >> through an API interface as that would also enable us to confirm >> whether an attempt to upgrade would bring new versions or not. >> >> * We wanted to have an option of running an upgrade installer at the >> time of upgrade where the structure of some of the persistent data >> stores ( databases , preference files ) related to the product are >> updated to be consistent with the new version of the bundle that >> manages this data store. To do this we defined an upgrade interface >> that is implemented in bundles that need some client side changes to >> be done at the time of upgrade. We plan to invoke this service >> interface after the upgraded bundle has been installed by providing >> the earlier version of the bundle as a parameter, so that the >> upgrade service implementation within the bundle can serially do all >> upgrade changes from that version to the current version. To do >> this before installing a feature , I'd like to know the original >> version of each bundle which has changed. This information is >> available when feature:install is run with a -v parameter. How can >> we programatically access that information ? >> >> Apologies for the long mail and thanks in advance for your suggestions. >> >> Regards >> Hari >> >> >> Regards >> Hari >> >> Hari Madhavan, >> Director - ERP Practice, >> Promantia Global Consulting LLP <http://www.promantia.in> >> Ph: +91 9845147731 >> *Openbravo Gold Partner* >> > > -- > Jean-Baptiste Onofré > jbono...@apache.org > http://blog.nanthrax.net > Talend - http://www.talend.com > -- Hari Madhavan, Director - ERP Practice, Promantia Global Consulting LLP <http://www.promantia.in> Ph: +91 9845147731 *Openbravo Gold Partner*
