Get the actual running computer at any context

ceztko

Apr 22nd, 2024 (edited)

154

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Groovy 1.48 KB | None | 0 0

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import org.jenkinsci.plugins.workflow.cps.CpsThread;
echo "Computer name: ${getCurrentComputerSafe().displayName}" // Prints: Built-In Node
pipeline {
agent any
stages {
stage('Stage1') {
agent {
label 'MyNode'
}
steps {
script {
echo "Computer name: ${getCurrentComputerSafe().displayName}" // Prints: MyNode
}
}
}
}
}
@NonCPS
static private Computer getCurrentComputerSafe()
{
// Try get executing computer first
def current = Computer.currentComputer();
if (current != null)
return current;
// Reverse iterate steps to find a delegate computer that
// will execute.
def threads = CpsThread.current().group.threads.toArray();
for (int i = threads.length - 1; i >= 0; i--)
{
def thread = threads[i];
if (thread.step == null)
continue;
def filePath = thread.step.context.get(hudson.FilePath);
if (filePath == null)
continue;
return filePath.toComputer();
}
// As a last measure, return the master computer
def computers = Jenkins.instance.computers;
for (int i = 0; i < threads.length; i++)
{
def computer = computers[i];
if (computer instanceof Jenkins.MasterComputer)
return computer;
}
throw new Exception('Unexpected no master computer found');
}

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