[FIXED] How to inject variables from a file in Jenkins Declarative Pipeline?

Issue

I have a text file :

export URL = "useful url"
export NAME = "some name"

What I do is executing this file with command source var_file.txt But when I do echo $URL or env.URL it returns nothing.

Please I don't have the ability to change the file var_file.txt : it means it will still be export var= value var

I know that it is possible to use load file.groovy step in pipeline to load variables but the file must be a list of : env.URL = 'url', I can't use this because I can't change file.

And we may also work with withEnv([URL = 'url']) but I must first get the values from an other script. This will really be a complicated solution.

So is there a way to use the file with list of export var = var_value in Jenkins Pipeline ?

Solution

What I have done is :

def varsFile = "var_file.txt"
def content = readFile varsFile

Get content line by line and split change the each line of content to env.variable = value:

def lines = content.split("\n")
for(l in lines){
        String variable = "${l.split(" ")[1].split("=")[0]}"
        String value = l.split(" ")[1].split("=")[1]
        sh ("echo env.$variable = \\\"$value\\\" >> var_to_exp.groovy") 
 }

And then load file groovy with step load in the pipeline:

load var_to_exp.groovy

Answered By - sirineBEJI
Answer Checked By - David Marino (JavaFixing Volunteer)