Gradle ‘gretty’ Plugin

[Mathieu Lirzin]

Hello,

Being a bit frustrated by the slowness of having to stop/compile/restart
OFBiz manually each time a java file is changed, I have been searching
for a way to make Java code hot-deployable, meaning recompiling and
redeploying Java classes each time a ‘.java’ file is saved.

The ‘gretty’ Gradle plugin seems to provide such feature [1][2].

I would like to know if somebody has already tried to integrate it in
OFBiz build system? and if there is any OFBiz singularitiy preventing
its use?

Thanks.

[1] https://guides.gradle.org/building-java-web-applications/
[2] https://akhikhl.github.io/gretty-doc/Hot-deployment.html

--
Mathieu Lirzin
GPG: F2A3 8D7E EB2B 6640 5761  070D 0ADE E100 9460 4D37

[taher]

Hmm, at a quick glance, I think this will not work.

The problem is that OFBiz is currently designed as a "collection" of
webapps each loaded separately but housed in one jar file that also
includes an embedded web server. So you have to alter the Catalina
Container or something like that to perhaps be able to incorporate hot
plugging.

If you like a suggestion, I would say we probably need to re-visit the
architecture of the whole web deployment style we currently have (The
Servlet Container, the Servlets, The Webapps, Tomcat, the whole
thing). We need to make a more flexible architecture that can easily
deploy as a stand-alone webapp that you can put on any servlet
container. Then all such plugins and tools would be easier to use.

On Thu, Jul 26, 2018 at 12:08 PM, Mathieu Lirzin
<[hidden email]> wrote:

> Hello,
>
> Being a bit frustrated by the slowness of having to stop/compile/restart
> OFBiz manually each time a java file is changed, I have been searching
> for a way to make Java code hot-deployable, meaning recompiling and
> redeploying Java classes each time a ‘.java’ file is saved.
>
> The ‘gretty’ Gradle plugin seems to provide such feature [1][2].
>
> I would like to know if somebody has already tried to integrate it in
> OFBiz build system? and if there is any OFBiz singularitiy preventing
> its use?
>
> Thanks.
>
> [1] https://guides.gradle.org/building-java-web-applications/
> [2] https://akhikhl.github.io/gretty-doc/Hot-deployment.html
>
> --
> Mathieu Lirzin
> GPG: F2A3 8D7E EB2B 6640 5761  070D 0ADE E100 9460 4D37

[Yash Sharma]

Hello Mathieu,

I have tried jRebel link: https://zeroturnaround.com/software/jrebel/
 with IntelliJ.

+1 Taher for the change in architecture from a single huge monolithic to
some microservice hot swap (dynamic loading) flexible architecture.


Thanks & Regards,
Pradhan Yash Sharma

On Thu, Jul 26, 2018 at 2:38 PM, Mathieu Lirzin <[hidden email]>
wrote:

> Hello,
>
> Being a bit frustrated by the slowness of having to stop/compile/restart
> OFBiz manually each time a java file is changed, I have been searching
> for a way to make Java code hot-deployable, meaning recompiling and
> redeploying Java classes each time a ‘.java’ file is saved.
>
> The ‘gretty’ Gradle plugin seems to provide such feature [1][2].
>
> I would like to know if somebody has already tried to integrate it in
> OFBiz build system? and if there is any OFBiz singularitiy preventing
> its use?
>
> Thanks.
>
> [1] https://guides.gradle.org/building-java-web-applications/
> [2] https://akhikhl.github.io/gretty-doc/Hot-deployment.html
>
> --
> Mathieu Lirzin
> GPG: F2A3 8D7E EB2B 6640 5761  070D 0ADE E100 9460 4D37
>

[Michael Brohl-3]

Hi Mathieu,

hot code replacement works fine in Eclipse if you have updated the
Eclipse classpath through ./gradlew eclipse.

You can run/debug OFBiz in Eclipse without problems mostly. Sometimes
you have to restart, depending of the changes.

For me this is working sufficiently.

Best regards,

Michael Brohl
ecomify GmbH
www.ecomify.de


Am 26.07.18 um 11:08 schrieb Mathieu Lirzin:

> Hello,
>
> Being a bit frustrated by the slowness of having to stop/compile/restart
> OFBiz manually each time a java file is changed, I have been searching
> for a way to make Java code hot-deployable, meaning recompiling and
> redeploying Java classes each time a ‘.java’ file is saved.
>
> The ‘gretty’ Gradle plugin seems to provide such feature [1][2].
>
> I would like to know if somebody has already tried to integrate it in
> OFBiz build system? and if there is any OFBiz singularitiy preventing
> its use?
>
> Thanks.
>
> [1] https://guides.gradle.org/building-java-web-applications/
> [2] https://akhikhl.github.io/gretty-doc/Hot-deployment.html
>

[Michael Brohl-3]

Hi Pradhan, Taher,

I think this would be a huge undertaking and I am not sure if this would
be a project goal for the near future.

We have many fields of action which should have more focus like UI,
functionality, documentation etc..

So yes, nice goal but more on the long view...

Regrds,

Michael


Am 26.07.18 um 11:27 schrieb Yash Sharma:

> Hello Mathieu,
>
> I have tried jRebel link: https://zeroturnaround.com/software/jrebel/
>   with IntelliJ.
>
> +1 Taher for the change in architecture from a single huge monolithic to
> some microservice hot swap (dynamic loading) flexible architecture.
>
>
> Thanks & Regards,
> Pradhan Yash Sharma
>
> On Thu, Jul 26, 2018 at 2:38 PM, Mathieu Lirzin <[hidden email]>
> wrote:
>
>> Hello,
>>
>> Being a bit frustrated by the slowness of having to stop/compile/restart
>> OFBiz manually each time a java file is changed, I have been searching
>> for a way to make Java code hot-deployable, meaning recompiling and
>> redeploying Java classes each time a ‘.java’ file is saved.
>>
>> The ‘gretty’ Gradle plugin seems to provide such feature [1][2].
>>
>> I would like to know if somebody has already tried to integrate it in
>> OFBiz build system? and if there is any OFBiz singularitiy preventing
>> its use?
>>
>> Thanks.
>>
>> [1] https://guides.gradle.org/building-java-web-applications/
>> [2] https://akhikhl.github.io/gretty-doc/Hot-deployment.html
>>
>> --
>> Mathieu Lirzin
>> GPG: F2A3 8D7E EB2B 6640 5761  070D 0ADE E100 9460 4D37
>>

[taher]

Yes agreed Michael. This is a "someday" to do item.

On Thu, Jul 26, 2018, 1:53 PM Michael Brohl <[hidden email]>
wrote:

> Hi Pradhan, Taher,
>
> I think this would be a huge undertaking and I am not sure if this would
> be a project goal for the near future.
>
> We have many fields of action which should have more focus like UI,
> functionality, documentation etc..
>
> So yes, nice goal but more on the long view...
>
> Regrds,
>
> Michael
>
>
> Am 26.07.18 um 11:27 schrieb Yash Sharma:
> > Hello Mathieu,
> >
> > I have tried jRebel link: https://zeroturnaround.com/software/jrebel/
> >   with IntelliJ.
> >
> > +1 Taher for the change in architecture from a single huge monolithic to
> > some microservice hot swap (dynamic loading) flexible architecture.
> >
> >
> > Thanks & Regards,
> > Pradhan Yash Sharma
> >
> > On Thu, Jul 26, 2018 at 2:38 PM, Mathieu Lirzin <
> [hidden email]>
> > wrote:
> >
> >> Hello,
> >>
> >> Being a bit frustrated by the slowness of having to stop/compile/restart
> >> OFBiz manually each time a java file is changed, I have been searching
> >> for a way to make Java code hot-deployable, meaning recompiling and
> >> redeploying Java classes each time a ‘.java’ file is saved.
> >>
> >> The ‘gretty’ Gradle plugin seems to provide such feature [1][2].
> >>
> >> I would like to know if somebody has already tried to integrate it in
> >> OFBiz build system? and if there is any OFBiz singularitiy preventing
> >> its use?
> >>
> >> Thanks.
> >>
> >> [1] https://guides.gradle.org/building-java-web-applications/
> >> [2] https://akhikhl.github.io/gretty-doc/Hot-deployment.html
> >>
> >> --
> >> Mathieu Lirzin
> >> GPG: F2A3 8D7E EB2B 6640 5761  070D 0ADE E100 9460 4D37
> >>
>
>
>

[James Yong-2]

Hi Mathieu,

Have you looked into http://dcevm.github.io/ ?

No comment about gretty as I haven't tried.

Regards,
James Yong

On 2018/07/26 09:08:44, Mathieu Lirzin <[hidden email]> wrote:

> Hello,
>
> Being a bit frustrated by the slowness of having to stop/compile/restart
> OFBiz manually each time a java file is changed, I have been searching
> for a way to make Java code hot-deployable, meaning recompiling and
> redeploying Java classes each time a ‘.java’ file is saved.
>
> The ‘gretty’ Gradle plugin seems to provide such feature [1][2].
>
> I would like to know if somebody has already tried to integrate it in
> OFBiz build system? and if there is any OFBiz singularitiy preventing
> its use?
>
> Thanks.
>
> [1] https://guides.gradle.org/building-java-web-applications/
> [2] https://akhikhl.github.io/gretty-doc/Hot-deployment.html
>
> --
> Mathieu Lirzin
> GPG: F2A3 8D7E EB2B 6640 5761  070D 0ADE E100 9460 4D37
>

[Mathieu Lirzin]

Hello James,

James Yong <[hidden email]> writes:

> Have you looked into http://dcevm.github.io/ ?
>
> No comment about gretty as I haven't tried.

I didn't know about it.  I will take a look.

Thanks.

--
Mathieu Lirzin
GPG: F2A3 8D7E EB2B 6640 5761  070D 0ADE E100 9460 4D37