In jenkins job, create file using system groovy in current workspace

Question

my task is to collect node details and list them in certail format. I need to write data to a file and save it as csv file and attach it as artifacts. But i am not able to c

Answer 1

Problem Groovy system script is always run in jenkins master node, while the workspace is the file path in your jenkins slave node, which doesn't exist in your master node.

You can verify by the code

theDir = new File(envVars.get('WORKSPACE'))
println theDir.exists()

It will return false

If you don't use slave node, it will return true

Solution As we can't use normal File, we have to use FilePath http://javadoc.jenkins-ci.org/hudson/FilePath.html

if(build.workspace.isRemote())
{
    channel = build.workspace.channel;
    fp = new FilePath(channel, build.workspace.toString() + "/node_details.txt")
} else {
    fp = new FilePath(new File(build.workspace.toString() + "/node_details.txt"))
}

if(fp != null)
{
    fp.write("test data", null); //writing to file
} 

Then it works in both case.