How to pass environment variables to the gradle wrapper build using only command line?

Question

I am trying to pass env variables locally with strictly a command line command. At deploy, these variables get passed into the docker container, but when running locally, they are not present and need to be set locally.

They need to be removed before committing though because they are access keys so i dont want them exposed in the repo. That is why running tests locally (without an IDE) would require a command that passes these variables.

I have already tried this:

./gradlew clean build -Dspring.profiles.active=local -DMY_ENV_VAR1=xxxxxx -DMY_ENV_VAR2=xxxxxx

and it doesnt seem to be working. i cant find the docs for the build command's options, but i thought this was how you pass them. what am i doing wrong here? or is it not possible?

Solution 1

This related post worked for me: https://stackoverflow.com/a/57890208/1441210

The solution was to use the --args option of gradlew to get the environment variable to be passed to the spring boot app:

./gradlew bootRun --args='--spring.profiles.active=local'

Solution 2

For passing env variables

MY_ENV_VAR1=xxxxxx MY_ENV_VAR2=xxxxxx ./gradlew bootRun

For arguments/overriding properties values

./gradlew bootRun --args='--spring.profiles.active=local --db.url=something --anotherprop=fafdf'

For both passing env variable and overriding properties values.

MY_ENV_VAR1=xxxxxx MY_ENV_VAR2=xxxxxx ./gradlew bootRun --args='--spring.profiles.active=local --db.url=something --anotherprop=fafdf'

Solution 3

If you want to pass values to the JVM that runs the gradle you can use the '-D' switch. I suppose you have to pass values to the gradle build file from the command line. If that's the case there are two options for that:

1. You can use the -P switch and specify the value there. For example:

   gradle -PmySecretKey="This key is so secret" yourTask

2. If you are using linux or variants you can set environment variable as follows:

   export ORG_GRADLE_PROJECT_mySecretKey="This key is so secret"

After this you can access the value in the gradle build file as follows (I am using kotlin dsl)

val mySecretKey: String by project
println(mySecretKey)

Solution 4

I just put the env variable setting before calling command as the way a regular Unix shell does. Work with my Zsh.

MY_ENV_VAR1=xxxxxx MY_ENV_VAR2=xxxxxx gradlew clean test

View more solutions

Comments

[heug]

setting local env vars in spring is very simple and i know how to do that, i am asking this question because theres a specific case (for PR build checks at my enterprise) for it long story short

[heug]

and the "--" within the string is necessary?

[sparkyspider]

@heug indeed it is!

[Stefan Falk]

./../gradlew bootRun --args='--spring.profiles.active=angular' is not working for me.. it's only working if I set SPRING_PROFILES_ACTIVE but I can't use this because I have to run this in a gradle.build.. somebody fml ..

[Matteo]

but those they do not get passed to my Java application, if I do MY_ENV=xxxxx ./gradlew buil. Then in my Java application MY_ENV is null. How can I achieve it?

[Eric]

this is not the right answer. check my answer for the correct value