maven toolchains not used to set the java version

[mgazanayi]

First of all, thanks for your work and for this great plugin.

We have multiple JDK versions installed and managed with toolchains plugin in our builds.
Unfortunately, the vertx-maven-plugin doesn't give the possibility of configuring which JDK to use.

Is there any way to do this or can you point me of helping implementing it?

Thanks in advance

[cescoffier]

Do you mean to compile your sources? In this case, it reuses the maven compiler configuration.

[mgazanayi]

No, it's for running my vertx app

mvn clean compile vertx:run

[cescoffier]

ah ok.

Did you try to change JAVA_HOME?
The method that looks for the java executable is: https://github.com/reactiverse/vertx-maven-plugin/blob/master/src/main/java/io/reactiverse/vertx/maven/plugin/utils/JavaProcessExecutor.java#L209

[mgazanayi]

The thing is that, we are using toolchains to have hermetic builds. And it works very well.

When I set a local Java version using jenv it works perfectly.

But the question for me was, since maven-toolchains-plugin makes the build of a project really hermetic, and every new developer have only to configure the toolchains, clone the project and that's all, I wanted to know how to. This keep the difference between every developers machine quite minimal.

[cescoffier]

The JavaProcessExecutor class could be modified to use the toolchain configure in the tool chain plugin. Fancy a PR?