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  3. July 2018

Re: What are micro-services?

Ballerina !! Wow !! that was new to me Pete ;)

Ballerina looks cool. And yet not to far from the REST and autowire feature
of spring-boot.

One thing i don't like in both the Ballerina and spring-boot environments -
entanglement. If you think about it you will notice that you bind you logic
into a protocol - here HTTP.

A wise man told me once: that an real microservice has no idea of where or
what protocol it is run by. Some puritans in that area also dictates the
the service request has to be self-descibing - even the class and method
has to be with in the "messsage" so you can move it into a Db2 as a stored
procedure or let it listen on a data-queue or what ever... this is the way
Seneca microservices are implemented. They does not look like
spring-boot/Ballerina where the focus is on the stack: the self contained
webserver/RESR/docket monolith road. ( And Pete - if i understand you
Ballerina is one step deeper - having the docker part integrated ? )

... What is best? .... Well I am not such a bright guy, so I can not judge
.. I use both strawberry and vanilla



On Thu, Jul 26, 2018 at 8:47 PM Pete Helgren <pete@xxxxxxxxxx> wrote:

Neils, Jack (Jack...thanks for the public comment about "busy people
don't always have time to chit-chat)

Neils - If you get a chance, take a look at Ballerina
(https://ballerina.io/ ) This is a sweet, simple to use language that is
already Docker, Kubernetes aware. I have only played with it a bit but
it is drop dead simple to use and seems to reflect what you are trying
to do.

Haven't looked into an IBM i deployment yet. There are dependencies
that haven't been met. But, it is a fun language to use and very
productive (and, Open Source!!)

Pete Helgren
www.petesworkshop.com
GIAC Secure Software Programmer-Java
Twitter - Sys_i_Geek IBM_i_Geek

On 7/25/2018 10:26 AM, Niels Liisberg wrote:
Jack - Thank you so much !!

Nod2RPG - not bad at all - i like it!!

Actually we have already moved the XML, JSON and SQL object graph out of
IceBreak - We call it noxDB ( Not only XML) and it is now a 100% open
source project now that anyone can use. Right now we have been using
RELIC
- since the code resides in source files, however it is not that elegant,
and we are changing that.

https://github.com/NielsLiisberg/noxDB

It makes it so easy to produce services with only these lines of RPG
code:

// load a resultset from the product table
sql = 'Select * from product';
pRows = json_sqlResultSet(sql);

// Produce a JSON responses
node_writeJson (pResponse: pRows );



On Wed, Jul 25, 2018 at 5:13 PM Jack Woehr <
jwoehr@xxxxxxxxxxxxxxxxxxxxxxxx>
wrote:

We're glad you are doing this fine work, Niels, it's a real service to
open
source on the IBM i!

Perhaps you could call it Nod2RPG ... When one "gives the nod to"
something
(an English and American colloquialism based on "nodding one's head
'yes'"), it means one approves doing things that way.

So your library will "give the nod 2 RPG" ... that is, we can still use
RPG
even in the web application era :)

On Wed, Jul 25, 2018 at 9:06 AM, Niels Liisberg <nli@xxxxxxxxxxxxxxxxx>
wrote:

Thanks Jack and Michael for your interest.

"moving the IceBreak core to node.RPG" ... Today IceBreak i our
platform
at
System & Method to bring RPG to the web and is a huge stack.
Unfortunately
some of the key features are build around some Api's from IBM that we
have
signed a non disclosure agreement with IBM - So IceBreak can never be
open
source with the form it has to day. However the HTTP, load balancing,
pooling, fail-over features can easy be moved - So this is why i have
started the node.RPG project.

Node.RPG - Yes - maybe it is not a good name - Liam Allen asked me to
change the name for the exact same reason, and maybe I will, but some
of
the next ILE components like "require" and "express" will actually use
NPM
to install RPG components - so I am in limbo land here ... Please help
:)

Anyways - Node.RPG (or micro.RPG or ILE-drops or what final name it
will
have) - this is going to be 100% open source.



On Wed, Jul 25, 2018 at 3:06 PM Jack Woehr
<jwoehr@absolute-performance.
com>
wrote:

On Wed, Jul 25, 2018 at 2:43 AM, Niels Liisberg <
nli@xxxxxxxxxxxxxxxxx
wrote:

Take a look here - and tell me what you think:
https://github.com/NielsLiisberg/Node.RPG


Niels, very interesting! I like to learn about all the tools for
legacy
modernization/transformation that are pure open source.

When you talk about "entanglement" I know what you mean, but there's
another kind of "entanglement".

There is the "entanglement" of being tied to vendor solutions!

So my goal is to service customers with as pure open source as
possible
so
they can "take their toys and go home" any time they want to.

You seem to be working from the same idea.


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