Jenkins Groovy: List folders located in a particular FTP folder.

List_FTP_Folders.groovy

// Created by f-steff 2019. Use and abuse as you wish.
@Grab(group='commons-net', module='commons-net', version='2.0')
import org.apache.commons.net.ftp.FTPClient
import org.apache.commons.net.ftp.FTPFile

//def path="pub/"

println("Fetching reverse sorted list of ftp folders from $path");
FTPClient ftpClient = new FTPClient()
ftpClient.connect "arnold.c64.org",21
ftpClient.enterLocalPassiveMode()
ftpClient.login "anonymous", "[email protected]"
ftpClient.changeWorkingDirectory(path)
FTPFile[] entries = ftpClient.listDirectories().sort { it.getTimestamp().getTime() }.reverse()
def BuildMap  = [:]
for (FTPFile directory : entries) {
    BuildMap.put(path+directory.getName(),directory.getName() )
}

ftpClient.logout()
ftpClient.disconnect()
println("Done!");
BuildMap

List folders loacted in a particular FTP folder.

Used by Jenkins using the Active Choices Parameter plugin

FTP URL and port, as well as username and password are hardcoded in the script.
FTP path needs to be supplied in a variable.

Instructions for uploading the script.

1. Upload script to Scriptler
2. Approve the script to be run from jobs.
3. Add a required parameter, named path.
4. Add a comment, such as "List folders loacted in a particular FTP folder"
5. A path specified must end with / - only if you want to reach root, it should be omitted.

Instructions for using the script.

1. Select This project is parameterised
2. Add Active Choices Parameter
3. Add a name, such as "MySelectedFolder"
4. Select a Scriptler Script.
5. Select ParameterDescription
6. Add the Parameter named "path", and specify it's value, such as "My/Folder/"
7. Add a Description such as "This is where you select MyFolder"
8. Select Choice Type, Filters etc. as needed. If you just want one folder, select Single Select and enable filters.

When run access the selected value through the ${MySelectedFolder} variable