Jenkins Shared Library src class - unable to resolve class

Question

I am looking for some guidance on the design of a Jenkins Shared Library class. Using global vars as shared library is working fine but everytime I define a class in src/ and I want to import it, I get the error unable to resolve class.

This is my shared library structure:

src
  - de
   - schlumpf
     - Tester.groovy
vars
  - sayHello.groovy

Class Tester.groovy

Here is the code of my class which I want to initialize inside a pipeline job.

package de.schlumpf

public class Tester implements Serializable {
  public String name = "test"

  Tester(String pName) {
    this.name = pName
  }

  def sayHi() {
    echo "Hello, ${this.name}."
  }

  def sayHi(String name) {
    echo "Hello, ${name}."
  }
}

Var sayHello.groovy

#!/usr/bin/env groovy

def call(String name = 'human') {
  echo "Hello, ${name}."
}

Pipeline Job

@Library('pipeline-library-demo')
import de.schlumpf.Tester //de.schlumpf doesn't work as well

stage('Demo') {
    echo 'Hello world'
    sayHello 'test'

    def t = new Tester('Alice')
    t.sayHi()
}

In line 2 I get the error: Unable to resolve class de.schlumpf.Tester. The global variable sayHello works like a charm... Does anyone know what I am doing wrong here?

The Shared Libary is imported in the System settings:

I know this looks similar to this one, but I can't find a typo or something in my path... Using Jenkins Shared Libraries as classes

The official documentation is here: https://jenkins.io/doc/book/pipeline/shared-libraries/

Version

• Jenkins: ver. 2.150.1
• Pipeline 2.6
• Pipeline: Groovy 2.61.1
• Pipeline: Shared Groovy Libraries 2.12

Answer 1

it throwing an error because you have created an object of a class outside script block. try below code and it should work.

@Library('pipeline-library-demo')
import de.schlumpf.*;

stages{
    stage('Demo') {  
      steps{
        echo 'Hello world'
        sayHello 'test'
       script{
        def t = new Tester('Alice')
        t.sayHi()
       }
      }
   }
 }  

Answer 2

I had a similar issue calling a static function, when I loaded the library dynamically: https://www.jenkins.io/doc/book/pipeline/shared-libraries/#loading-libraries-dynamically

This should work for you:

def myLib = library 'pipeline-library-demo'
def t = myLib.de.schlumpf.Tester.new('Alice')
t.sayHi()

Answer 3

I found that when I wanted to import a class from the shared library I have, I needed to do it like this:

//thanks to '_', the classes are imported automatically.
@Library('my-shared-library@BRANCH') _ 

// only by calling them you can tell if they exist or not.
def exampleObject = new example.GlobalVars()