Thanks for your reply Ben.
I added a remark to issue 2466 referring to my attempt and the the
issues I run into.
A possible way out is to modify the swagger template to cope with
untyped properties. I will look into this once I have some time ;-)
Regards,
Minto
On 13-09-17 14:49, Ben Browning wrote:
Is there a bug for the KeyValue class being generated incorrectly from the
Swagger spec? That's something we should be able to fix to make generating
clients in other languages, like Java, easier. At a glance it looks like
perhaps the type of the value property should be defined as object which
translates to java.lang.Object (so anything) in generated Java client code.
I'll take a look and add some comments on issue 2590 to help you get the
changes tested.
Ben
On Mon, Sep 11, 2017 at 4:15 PM, Minto van der Sluis <[email protected]> wrote:
Hi,
I have been scratching the surface of Openwhisk and I like it a lot. But
since Java is the eco system (language + tooling) I am most comfortable
with, I would like to create my actions in java. Luckily Openwhisk supports
Java.
Unfortunately diving a bit deeper somehow gives me the impression that
Java is not really a first class citizen. Why do I get this impression?
There are a number of reasons:
1) Examples
I can hardly find any decent Java based examples beyond hello world. In
particular how to invoke other actions from within a Java action.
Seaching on Github with "Openwhisk java" results in only 4 projects :-(
and one of them is mine (see 2)
2) Openwhisk java client API
Searching for Openwhisk client libraries results in libraries for
javascript, swift, go and python. Unfortunately none for java. There is
however a feature request: https://github.com/apache/incu
bator-openwhisk/issues/2466
I had a little go at it myself. The API is mostly generated from the
swagger file. Unfortunately the Swagger code generator generates unusable
code for one the most important data structures, KeyValue.
My Openwhisk Java API can be found at: https://github.com/misl/openwh
isk-client-java
Yes it desperately needs some additional documentation, but first I want
to fix the KeyValue issue. And example of using the library from outside
openwhisk can be found in the code at: https://github.com/misl/openwh
isk-client-java/blob/master/openwhisk-api-client-retrofit/
src/test/java/SimpleTest.java
3) Fully qualified method name does not work for Java action handlers
(see: wsk action create --main)
For this I already created an issue: https://github.com/apache/incu
bator-openwhisk/issues/2590
I even tried solving this one myself, have a look at my fork at:
https://github.com/misl/incubator-openwhisk
Fixing the issue was easy, but testing it seems to be much more complex.
Maybe I need a little help here to be able to complete this one.
All this gives me the impression that the focus for Openwhisk is on a lot
of languages but not on Java. Or am I totally wrong here?
Please share your thoughts.
Kind regards,
misl
PS 1: For the interested I might have another project worth taking a look
at. Openwhisk Package and Action annotations -
https://github.com/misl/xup-openwhisk-annotations . It includes a script
to quickly upload the generated Jar file. This one is also still needs
documentation, but to see how it works have a look at the examples.
PS 2: Oh by the way, If any of these projects are of interest, I am
willing to donate.
