[Hawkular-dev] Where should integration components live?

[Peter Palaga]

On 2015-12-01 21:50, John Sanda wrote:
> I am primarily talking about bus integration which would include things like,
>
> * hawkular-metrics-component
> * hawkular-alerts-bus
> * hawkular-alerts-bus
> * hawkular-alerts-actions-bus
> * hawkular-inventory-bus-api
> * hawkular-inventory-bus

Ah OK, this is a little bit different area than I wanted to speak about.

> Once we move to WF 10, we will drop the bus subsystem in favor of the
 > default messaging subsystem. All that remains of the bus is a shared,
 > common library. It will no longer have (or need to have) any
 > relationship/dependency with the nest. I wonder if the bus integration
 > components should live in the main hawkular repo. If we have
> integrationtests involving these components that run in a hawkular
 > server, then I think from a development stand point, it makes things
> easier if they live in the main hawkular repo.

I agree that integration tests should be located as close as possible to 
the components they are testing, ideally the tests should be located in 
the same git repository as the components tested.

However, we cannot move bus-common to HK main, at least because that 
would introduce circular dependencies between HK main on one side and 
Agent and Command Gateway on the other side.

-- P


>
>> On Dec 1, 2015, at 3:34 PM, Peter Palaga <ppalaga at redhat.com> wrote:
>>
>> Hi John, I was about to write a message on this topic now after I spoke
>> with mazz :)
>>
>>> integration components, particularly those that interact
>>> with the bus, live in the respective component repos.
>>
>> I am not 100% sure which are "integration components" for you.
>>
>> Nevertheless, mazz and me agree to move the "new Bus" (after
>> HAWKULAR-844) and "new Nest"
>> (https://github.com/hawkular/hawkular-nest/pull/1 ) to hawkular-commons
>> git repository. I'll write more about the proposal in the next message.
>>
>> -- P
>>
>> On 2015-12-01 21:09, John Sanda wrote:
>>> Currently integration components, particularly those that interact
>>> with the bus, live in the respective component repos. I have been
>>> working with Peter on HAWKULAR-844 to migrate the bus from ActiveMQ
>>> to the default messaging subsystem in WildFly 10, which is based on
>>> ActiveMQ Artemis. While working on this, I started to wonder if all
>>> of the integration components should live in the same repo. Let’s say
>>> I make a breaking change in the bus, then we have to update and cut
>>> releases for each of the component repos, which is currently five or
>>> six. If the integration components live in the same repo as the bus,
>>> it is much easier to make the changes and we only have one new
>>> release to worry about. Keeping the integration components in the
>>> same repo should also help reduce the number of dependencies in each
>>> of the component repos which makes development on any one of them
>>> easier. I want to know what people think because once HAWKULAR-844 is
>>> done, I would like to consider some refactoring in the bus code to
>>> utilize JMS 2.0 APIs including support for async sending/receiving
>>> messages. This would likely entail breaking changes.
>>>
>>> - John _______________________________________________ hawkular-dev
>>> mailing list hawkular-dev at lists.jboss.org
>>> https://lists.jboss.org/mailman/listinfo/hawkular-dev
>>>
>>
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