Robert Varga created KARAF-5107:
-----------------------------------
Summary: Allow hooking into the feature installation process
Key: KARAF-5107
URL: https://issues.apache.org/jira/browse/KARAF-5107
Project: Karaf
Issue Type: New Feature
Components: karaf-feature
Affects Versions: 4.1.1
Reporter: Robert Varga
Feature service should expose a way to hook into the feature:install process,
so components living inside container can understand when a bulk bundle
operation starts, ends and reaches a major milestone.
This ability is needed to optimize OpenDaylight startup/shutdown procedures, as
exemplified by https://bugs.opendaylight.org/show_bug.cgi?id=7925 and
https://bugs.opendaylight.org/show_bug.cgi?id=7927. In these cases we are
scanning deployed bundles for well-known file locations as the bundles get
resolved. These files are then used to compile the effective model of the
run-time world (which is an expensive operation).
Since there is no way to understand that an install transaction is going on,
the model is invalidated whenever a bundle is resolved and or stopped, leading
to multiple compilations (and oftentime failures, as all requirements are not
yet met) during a single feature:install invocation or framework shutdown.
This requires having callbacks invoked from Deployer.deploy() for:
1) just before any bundle operations are performed
2) once all bundles have been resolved, but not started
3) once the operation completes and before the next bundle movement starts
--
This message was sent by Atlassian JIRA
(v6.3.15#6346)
