Do full connector tracker cleanup when the session lock is released (#9707)
As there is no "request end" call after invoking UI.access() from a background thread,
the connector map was not earlier properly cleaned afterwards. If you toggled visibility of a
component from the background thread, the tracker state became inconsistent.
If this becomes a performance problem, it could probably be optimized to that cleanup
is done in request end and only at the end of access if not inside a request.
Fixes #9654
More user friendly fail message (was NullPointerException) (#9665)
Yes, I should never have created "D:\eclipse workspaces" in the first
place.
No, I am not replacing "%20" with spaces, or creating an URI instance.
"D:\eclipse%20workspaces" is a valid folder and I'm not willing to go
down the rabbit hole and see what that turns into.
Tidy up the Vaadin OSGi whiteboard component (#9648)
The Vaadin OSGi integration component uses Declarative Services, but it does some odd things:
* It uses the whiteboard service's own bundle context to get hold of the service instance
* It has an asymmetric get/release for the whiteboard service, which could leak instances over time
* It releases service instances that it is still actively using
This change tidies up the service lifecycle by delegating the get/release to the Service Component Runtime managing the container (specifically by injecting the service instance). Using this injection also ensures that the Vaadin whiteboard service is obtained using this component's bundle context.
This change also simplifies the code a little by using the reference as the key to track the registrations. Different references for the same service are required to be equal so there is no issue with doing this.
This change does not alter the fact that the whiteboard service's bundle context is used to register the Http Whiteboard servlet, as this may be the intended behaviour. As a result the component should be prepared for an IllegalStateException when unregistering the service whiteboard service, which may already have been unregistered by the OSGi framework if the target bundle is stopping.
Change sendMessage access modifier to protected. (#9622)
This allows extending AtmospherePushConnection, and then doing overriding sendMessage. One use case is to correlate the IP address and the message in the logs.