Great questions. There'd be clear separation of concerns in this:
* Docker
o Plain 'ole Karaf
o Install our features.xml
o Install a test bundle that enables the ability to remotely
execute some flows. I had been thinking along the lines of what
we do in the OSGi quickstart/demo projects where we provide a
simple persistence context and the ability to
write/update/fetch/delete entities.
* External
o Plain JUnit methods
o Hit the test bundle through its remote API (HTTP or something
else), executing those simple functions.
o Assertions based on the results or metrics
So yes, there is a bit of overlap with the Pax Exam setup, but removing
the dynamic tiny-bundle, Pax Probes, and CL caveats. And most
importantly, full access to standard Karaf logging without more praying.
Before I get too far into the weeds here, one of the ActiveMQ guys gave
me some ref code from an entirely different Pax Exam setup that may
closely resemble what I'm describing, but without Docker. I'll give
that a fair shake before diving off any further, but as always, devil's
in the details.
(like the gradle docker plugin) and simplified by docker image repos
(bintray, e.g.).
Exactly -- the Gradle and Maven plugins for Docker handle almost all of
the heavy lifting. Our setup has been pretty straight-forward so far.
On 1/12/18 4:04 PM, Steve Ebersole wrote:
I believe most of this is already handled for various build tools
(like the gradle docker plugin) and simplified by docker image repos
(bintray, e.g.).
But this is a good point. I'd be interested to see if you've done
this before Brett..
On Fri, Jan 12, 2018 at 2:56 PM Gunnar Morling <gunnar(a)hibernate.org
<mailto:gunnar@hibernate.org>> wrote:
Brett,
What's still unclear to me is when going the Docker route, won't
you still
need some code which deploys your tests to Karaf, runs them there and
fetches the test results, so e.g. your Gradle build will fail if
there are
test failures? Would you envision to write these bits yourself? And
wouldn't this amount to re-implementing PaxExam yourself? Seems
I'm still
missing a piece of the story :)
Cheers,
--Gunnar
2018-01-12 19:16 GMT+01:00 Brett Meyer <brett(a)hibernate.org
<mailto:brett@hibernate.org>>:
> I guess the way I'm looking at this is Docker will be primarily
used by
> Jenkins, and myself or anyone working directly on hibernate-osgi
> itself. Otherwise, it'll be disabled by default and hidden behind a
> profile. We'll make sure that most contributors running the entire
> Hibernate test suite won't be affected...
>
>
> On 1/12/18 1:13 PM, andrea boriero wrote:
> > I already have Docker running on my machine, so it seems not a big
> > issue for me,but not sure about the impact for others.
> >
> > Anyway It's worth giving a try.
> >
> > On 12 January 2018 at 17:54, Sanne Grinovero
<sanne(a)hibernate.org <mailto:sanne@hibernate.org>
> > <mailto:sanne@hibernate.org <mailto:sanne@hibernate.org>>>
wrote:
> >
> > On 12 January 2018 at 17:32, Brett Meyer
<brett(a)hibernate.org <mailto:brett@hibernate.org>
> > <mailto:brett@hibernate.org
<mailto:brett@hibernate.org>>>
wrote:
> > > If I don't have time to contribute to Pax Exam, I certainly
> > don't have
> > > time to start a new project haha...
> > >
> > > And realistically, that "something new" would likely
involve
> > containers
> > > anyway.
> > >
> > > At this point, mostly a question of 1) status quo, 2)
Docker (or
> any
> > > other container-based solution), or 3) try screwing
around with
> > Pax Exam
> > > in "server-only" mode (but I don't have high hopes
there).
> >
> > Sure. Docker is now available on the CI slaves too, so
that's not
> > a problem.
> >
> > The only annoyance is that the whole ORM team - and anyone
> > contributing - would need to have Docker as well, but that
doesn't
> > seem too bad to me... and was likely bound to happen for
other tools
> > :)
> >
> > Steve, Chris and Andrea? Ok with that? Maybe you have Docker
> > running already?
> >
> > >
> > >
> > > On 1/12/18 12:27 PM, Sanne Grinovero wrote:
> > >> Ok, looks like you really should start something new :)
> > >>
> > >> Hopefully many of those other annoyed Karaf developers will
> follow.
> > >>
> > >> On 12 January 2018 at 13:59, Brett Meyer
<brett(a)hibernate.org <mailto:brett@hibernate.org>
> > <mailto:brett@hibernate.org
<mailto:brett@hibernate.org>>>
wrote:
> > >>> Plus, for me, it's more a question of time. I only
have a bit
> > available
> > >>> for open source work these days, and I'd rather spend
that
> > knocking out
> > >>> some of the hibernate-osgi tasks we've had on our
plate for a
> > while. I
> > >>> unfortunately don't have anything left to contribute
to Pax
> > Exam itself,
> > >>> assuming that would even fix the problem.
> > >>>
> > >>> Even worse, we're barely using the integration tests
for
> > anything more
> > >>> than a simple smoke test at this point, since it seems
like
> > every time
> > >>> we touch it something new goes wrong. Looking for a more
> > *consistent*
> > >>> solution -- need more confidence in the backbone.
> > >>>
> > >>>
> > >>> On 1/12/18 8:56 AM, Brett Meyer wrote:
> > >>>> Sorry Gunnar/Sanne, should have clarified this first:
> > >>>>
> > >>>> We actually used Arquillian before Pax Exam, and the
> > experience was
> > >>>> far worse (somewhat of a long story)...
> > >>>>
> > >>>>> Pax Exam was just "helping" to
deploy/run things in
Karaf, so I
> > >>>> can't imagine using Karaf without the helpers
being a
walk in
> > the park
> > >>>>
> > >>>> That's not actually the case. The way Pax Exam
currently
> > runs our
> > >>>> tests is fundamentally part of the problem. The test
code is
> > >>>> dynamically wrapped in an actual bundle, using
something like
> > >>>> tiny-bundles, and executed *within* the container
itself. Pax
> > >>>> overrides runs with additional probes, overrides
logging
> > >>>> infrastructure, etc. Those nuances can often be the
source
> > of many of
> > >>>> the bugs (there are a ton of classloader
implications, etc.
> > -- IIRC,
> > >>>> this was one area where Arquillian was much, much
worse).
> > There are
> > >>>> some benefits to that setup, but for Hibernate it
mainly gets
> > in the way.
> > >>>>
> > >>>> It *does* have a "server mode" where tests
run
outside of the
> > >>>> container, but I vaguely remember going down that
path early
> > on and
> > >>>> hitting a roadblock. For the life of me, I can't
remember the
> > >>>> specifics. But my pushback here is that ultimately
Docker
> > might be
> > >>>> more preferable, giving us more of a real world
scenario to
> > do true
> > >>>> e2e tests without something else in the middle.
> > >>>>
> > >>>>> so I can't imagine using Karaf without the
helpers
being a
> > walk in
> > >>>> the park; e.g. having to deal with HTTP operations
comes with
> > its own
> > >>>> baggage {dependencies, complexity, speed, .. } and
generally
> more
> > >>>> stuff to maintain.
> > >>>>
> > >>>> I guess I respectfully disagree with that, but purely
due to
> > Karaf
> > >>>> features. Our features.xml does most of the heavy
lifting for
> us
> > >>>> w/r/t getting Hibernate provisioned. The same would
be true
> > with the
> > >>>> test harness bundle/feature. REST is simple and
> > out-of-the-box thanks
> > >>>> to Karaf + CXF or Camel. For other possible routes
(Karaf
> > commands),
> > >>>> we already have code available in our demo/quickstart
projects.
> > >>>>
> > >>>>> Also: considered contributing to Pax?
> > >>>> Yes, of course. But the fact that numerous Karaf
*committers*
> > >>>> themselves have a long history of built-up
frustration on it
> > doesn't
> > >>>> leave me optimistic. A couple of them had tried to
pitch in
> > at one
> > >>>> point and weren't able to get anywhere.
> > >>>>
> > >>>>> but it seems their developers really expect their
users to
> > be deeply
> > >>>> familiar with it all
> > >>>>
> > >>>> Absolutely! But again, our struggles also come down
to the
> > >>>> fundamental way Pax Exam works...
> > >>>>
> > >>>>
> > >>>> On 1/12/18 6:27 AM, Sanne Grinovero wrote:
> > >>>>> +1 to explore alternatives to Pax Exam, but
I'd be
wary of
> > maintining
> > >>>>> our own test infrastructure.
> > >>>>>
> > >>>>> Pax Exam was just "helping" to
deploy/run things in
Karaf,
> > so I can't
> > >>>>> imagine using Karaf without the helpers being a
walk
in the
> > park; e.g.
> > >>>>> having to deal with HTTP operations comes with
its
own baggage
> > >>>>> {dependencies, complexity, speed, .. } and
generally
more
> > stuff to
> > >>>>> maintain.
> > >>>>>
> > >>>>> So.. +1 to try out Arquillian or anything else.
Or
maybe you
> > could
> > >>>>> start your own tool, but I'd prefer to see it
in a
separate
> > repository
> > >>>>> :) e.g. a nice Gradle plugin so maybe you get
more
people
> > helping?
> > >>>>>
> > >>>>> Also: considered contributing to Pax? My personal
experience
> > with it
> > >>>>> has always been a pain but if I had to try
identify the
> > reason, it was
> > >>>>> mostly caused by me being unfamiliar with Karaf
and not
> > having good
> > >>>>> clues to track down the real failure; maybe some
minor error
> > reporting
> > >>>>> improvements could make a big difference to its
usability? Just
> > >>>>> saying, I don't feel like Pax is bad, but it
seems their
> > developers
> > >>>>> really expect their users to be deeply familiar
with
it all
> > - feels
> > >>>>> like the typical case in which they could use
some
feedback
> > and a
> > >>>>> hand.
> > >>>>>
> > >>>>> Thanks,
> > >>>>> Sanne
> > >>>>>
> > >>>>> On 12 January 2018 at 08:22, Gunnar
> > Morling<gunnar(a)hibernate.org <mailto:gunnar@hibernate.org>
<mailto:gunnar@hibernate.org <mailto:gunnar@hibernate.org>>> wrote:
> > >>>>>> Hi Brett,
> > >>>>>>
> > >>>>>> We also had our fair share of frustration with
Pax
Exam in
> > HV, and I was
> > >>>>>> (more than once) at the point of dropping it.
> > >>>>>>
> > >>>>>> Docker could work, but as you say it's a
bit of a heavy
> > dependency, if not
> > >>>>>> required anyways. Not sure whether I'd
like to add
this as
> > a prerequisite
> > >>>>>> for the HV build to be executed. And tests in
separate
> > profiles tend to be
> > >>>>>> "forgotten" in my experience.
> > >>>>>>
> > >>>>>> One other approach could be to use
Arquillian's OSGi
> > support (see
> > >>>>>>
https://github.com/arquillian/arquillian-container-osgi
> >
<https://github.com/arquillian/arquillian-container-osgi>), did
> > you consider
> > >>>>>> to use that one as an alternative?
> > >>>>>>
> > >>>>>> Cheers,
> > >>>>>>
> > >>>>>> --Gunnar
> > >>>>>>
> > >>>>>>
> > >>>>>> 2018-01-12 3:34 GMT+01:00 Brett
Meyer<brett(a)hibernate.org <mailto:brett@hibernate.org>
> > <mailto:brett@hibernate.org
<mailto:brett@hibernate.org>>>:
> > >>>>>>
> > >>>>>>> <tired-rant>
> > >>>>>>>
> > >>>>>>> I'm fed up with Pax Exam and would
love to replace
it as the
> > >>>>>>> hibernate-osgi integration test harness.
Most of the
> > Karaf committers
> > >>>>>>> I've been working with hate it more
than I do. Every
> > single time we
> > >>>>>>> upgrade the Karaf version, something
less-than-minor in
> > hibernate-osgi,
> > >>>>>>> upgrade/change dependencies, or attempt to
upgrade Pax
> > Exam itself,
> > >>>>>>> there's some new obfuscated failure.
And no
matter how
> > much I pray, it
> > >>>>>>> refuses to let us get to the container
logs to
figure out
> what
> > >>>>>>> happened. Tis a house of cards.
> > >>>>>>>
> > >>>>>>> </tired-rant>
> > >>>>>>>
> > >>>>>>> One alternative that recently came up
elsewhere: use
> > Docker to bootstrap
> > >>>>>>> the container, hit it with our
features.xml, install a
> > test bundle that
> > >>>>>>> exposes functionality externally (over
HTTP, Karaf
> > commands, etc), then
> > >>>>>>> hit the endpoints and run assertions.
> > >>>>>>>
> > >>>>>>> Pros: true "integration test",
plain vanilla
Karaf, direct
> > access to all
> > >>>>>>> logs, easier to eventually support and
test other
containers.
> > >>>>>>>
> > >>>>>>> Cons: Need Docker installed for local test
runs,
probably
> > safer to
> > >>>>>>> isolate the integration test behind a
disabled-by-default
> > Maven profile.
> > >>>>>>>
> > >>>>>>> Any gut reactions?
> > >>>>>>>
> > >>>>>>> OSGi is fun and I'm not at all
bitter,
> > >>>>>>>
> > >>>>>>> -Brett-
> > >>>>>>>
> > >>>>>>> ;)
> > >>>>>>>
> > >>>>>>>
> > >>>>>>>
_______________________________________________
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> > >>>>>>> hibernate-dev(a)lists.jboss.org
<mailto:hibernate-dev@lists.jboss.org>
> > <mailto:hibernate-dev@lists.jboss.org
<mailto:hibernate-dev@lists.jboss.org>>
> > >>>>>>>
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> > <https://lists.jboss.org/mailman/listinfo/hibernate-dev>
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