ManagedService won't get called from File Install

Question

I have a Felix setup like this:

   ID|State      |Level|Name
    0|Active     |    0|System Bundle (5.0.1)
    1|Active     |    1|Apache Felix Bundle Repository (2.0.4)
    2|Active     |    1|Apache Felix Configuration Admin Service (1.8.8)
    3|Resolved   |    1|Apache Felix File Install (3.5.0)
    4|Active     |    1|Apache Felix Gogo Command (0.14.0)
    5|Active     |    1|Apache Felix Gogo Runtime (0.16.2)
    6|Active     |    1|Apache Felix Gogo Shell (0.10.0)
    7|Active     |    1|g.db OSGi Bundle (1.0.0)

The g.db bundle does basically this:

public class Activator implements BundleActivator, ManagedService {

ServiceRegistration sr;

public void updated(Dictionary dict) throws ConfigurationException {
    System.err.println("\nupdated " + this);
}

public void start(BundleContext context) throws Exception {

    System.err.println("\nstart " + this);

    Dictionary props = new Hashtable();
    props.put(Constants.SERVICE_PID, "db");
    sr = context.registerService(ManagedService.class.getName(), this, props);

}
}

And I'm awaiting that updated() get called if I modify db.cfg in ./load. But it won't.

g! inspect cap service 7
g.db [7] provides:
------------------------------------
service; org.osgi.service.cm.ManagedService with properties:
   service.bundleid = 7
   service.id = 28
   service.pid = db
   service.scope = singleton

File Install is watching the right file. I get the log message when modifying db.cfg:

Updating configuration from db.cfg

I raised the log level of the Configuration Admin Service and get this:

*DEBUG* Scheduling task Update: pid=db
*DEBUG* Running task Update: pid=db
*DEBUG* UpdateConfiguration(db) scheduled
*DEBUG* Updating configuration db to revision #3
*DEBUG* No ManagedService[Factory] registered for updates to configuration db

Seems something is wrong with my service registration (?)

Finally it was an error in the POM of the NB project: I was using the org.osgi.compendium artifact in compile scope. Changing to provided scope and it works.

check if you don't have multiple configurations under this pid, one managed by fileinstall, and the one injected into the service. fileinstall search first a configuration linked to the file, and then ask the configuration with a pid — Jérémie B, Feb 27 '16 at 10:49
Would be great if you could document what you did wrong and how you fixed it. Maybe it can help somone else. — Christian Schneider, Feb 27 '16 at 17:04

score 0 · Accepted Answer · answered Feb 27 '16 at 18:53

Compile or provided scope should normally make no difference... unless you also embed all compile scope dependencies.

In this case the error you had is normal as you embed the spec package. So the package your bundle sees and the package the config admin service uses are different. So your ManagedService will not be picked up by the config admin service impl.

ManagedService won't get called from File Install

1 Answers1