Hello,
just for other people that are trying to get Vaadin 8 to work within an
OSGi environment:
The ClassNotFoundException for AppWidgetset can be ignored. If Vaadin
does not find this class it falls back to the default widgetset.
The lost connection seems to stem from false urlPatterns for UIs. After
the initial load of an UI that is registered under localhost:8080/test
Vaadin sends XHR requests for each interaction (e.g. resizing, clicks,
etc.) to the server. The path for these requests are always in form of
<myUrlPattern>/UIDL/?... In our case this would be
localhost:8080/test/UIDL. If there is no servlet registered for this
path, the Vaadin client receives a malformed response and displays a
popup that says: Connection lost... . I fixed this issue in my example
application by letting VaadinApplicationHandler change all urlPatterns
of UIs to <myUrlPattern>/*
The VaadinResource class of the original enRoute example is not needed
anymore, as Vaadin 8 takes care of registering its resources
(Widgetsets/Themes/other stuff) itself as long as its bundles are
started in the right order! The first bundle to start must be
vaadin-shared.
Kind regards,
Thomas
------ Originalnachricht ------
Von: "Thomas Driessen" <thomas.dries...@ds-lab.org>
An: "Matthews, Kevin" <kevin.matth...@firstdata.com>; "Paul F Fraser"
<pa...@a2zliving.com>; "OSGi Developer Mail List"
<osgi-dev@mail.osgi.org>
Gesendet: 17.01.2018 18:07:27
Betreff: Re[2]: [osgi-dev] Fwd: Fwd: Vaadin 8.2 in OSGi: ClassNotFound
Hello Paul,
thank you for the hint to the enroute Vaadin exmaple.
My steps so far:
I tried to merge Peter's code with the current work of Vaadin regarding
their OSGi compatibility [1] and got Vaadin 8.2.1 to at least show the
UI once.
However, after the initial request it looses the connection to the
server and isn't working anymore :(
From Peter's code I removed the VaadinResources class, because this is
done now by Vaadin, at least if you start the bundles in the right
order [2]. They are using static method calls between bundles and if
the vaadin-shared bundle hasn't been started before the others there
will be an exception in the @Activate method of some of their other
services -.-
Right now I'm dealing with a ClassNotFoundException as Vaadin can not
find an AppWidgetset? Additionally the reconection issues seems to
originate from some XHR configuration issues.
I've set up a sample workspace [3], so that anyone who is interested
can investigate those issues too.
Kind regards,
Thomas
[1]
https://github.com/mmerruko/framework/commit/ce52b21290ca5790b1b193876a2d000d7d1d970e
[2] https://github.com/vaadin/framework/issues/10526
[3] https://github.com/Sandared/vaadin8osgi.git
------ Originalnachricht ------
Von: "Matthews, Kevin via osgi-dev" <osgi-dev@mail.osgi.org>
An: "Paul F Fraser" <pa...@a2zliving.com>; "OSGi Developer Mail List"
<osgi-dev@mail.osgi.org>
Gesendet: 17.01.2018 00:29:53
Betreff: Re: [osgi-dev] Fwd: Fwd: Vaadin 8.2 in OSGi: ClassNotFound
I apologize to send this request on this thread but I had sent this
topic on a separate email thread and got no response. A simple
question. Does anyone know or had done production deployment model
using bnd osgi services. What’s the best practice to deploy these
bundles to a standalone server as runnable jar or to docker containers
using apache ace.
From:osgi-dev-boun...@mail.osgi.org
[mailto:osgi-dev-boun...@mail.osgi.org] On Behalf Of Paul F Fraser via
osgi-dev
Sent: Tuesday, January 16, 2018 6:00 PM
To: OSGi Developer Mail List
Subject: [osgi-dev] Fwd: Fwd: Vaadin 8.2 in OSGi: ClassNotFound
Forwarded with permission--
-------- Forwarded Message --------
Subject:
Fwd: [osgi-dev] Vaadin 8.2 in OSGi: ClassNotFound
Date:
Tue, 16 Jan 2018 22:24:18 +0100
From:
Pierre De Rop <pierre.de...@gmail.com> <mailto:pierre.de...@gmail.com>
To:
Paul F Fraser <pa...@a2zliving.com> <mailto:pa...@a2zliving.com>
Hello Paul;
I'm Pierre, one of the apache felix dependency manager committer;
so, I just wanted to comment the following part in your mail:
"Also, I have given up using Bndtools with Oxygen as there seems to
be an intermittent problem that causes Eclipse to not load the
workspace and once it happens I have had to reinstall Eclipse. So I
have gone back to Neon and so far the problem has not re-occurred."
Indeed, I think I came across the same issue you described; and when
my eclipse Oxygen (and bndtools 3.5.0) can't restart, then the problem
is resolved using the "-clean" eclipse option (see [1]])
hope this helps;
kind regards
/Pierre
[1]
https://stackoverflow.com/questions/2030064/how-to-run-eclipse-in-clean-mode-and-what-happens-if-we-do-so
<https://urldefense.proofpoint.com/v2/url?u=https-3A__stackoverflow.com_questions_2030064_how-2Dto-2Drun-2Declipse-2Din-2Dclean-2Dmode-2Dand-2Dwhat-2Dhappens-2Dif-2Dwe-2Ddo-2Dso&d=DwMDaQ&c=ewHkv9vLloTwhsKn5d4bTdoqsmBfyfooQX5O7EQLv5TtBZ1CwcvjU063xndfqI8U&r=wKHHp1xupEN1UoR2CPDlg9US2Vs3om5ld5YqSsWMQX8&m=a2pcT_a1N3ce6Hakf7mZrvZB_WD-LRjm6tzRJMTZj00&s=rEKD80woMOc36eXclJlPWSsajWODV1ukr_CIysJsVgA&e=>
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