jenkins_get_folders_stores_credentials.groovy

def folders = Jenkins.getInstance().getAllItems(com.cloudbees.hudson.plugins.folder.Folder.class)
for(f in folders){
  	println "FOLDER: ${f.name}"
    def stores = com.cloudbees.plugins.credentials.CredentialsProvider.lookupStores(f);
    for (s in stores) {
      	
        switch(s.getContext().getClass()){
       
            case com.cloudbees.hudson.plugins.folder.Folder:
                println "   STORE: ${s.getContext().name}";
                if (s.getContext() == f) {
                    def creds = com.cloudbees.plugins.credentials.CredentialsProvider.lookupCredentials(
                        com.cloudbees.plugins.credentials.Credentials.class, 
                        f
                    )
                    for(c in creds) {
                        if (c.getScope() == null){
                          switch(c.getClass()){
                              case org.jenkinsci.plugins.plaincredentials.impl.StringCredentialsImpl:
                                println "      ${c.id}: ${c.getSecret()}"  
                                  break;
                              case org.jenkinsci.plugins.plaincredentials.impl.FileCredentialsImpl:
                                println "      ${c.id}: ${c.getFileName()}"
                                  //println "      ${c.id}: ${c.getContent()}"  
                                  break;
                              case com.cloudbees.plugins.credentials.impl.UsernamePasswordCredentialsImpl:
                                println "      ${c.id}: ${c.getUsername()}"  
                                  break;
                              case com.cloudbees.jenkins.plugins.sshcredentials.impl.BasicSSHUserPrivateKey:
                                println "      ${c.id}: ${c.getUsername()}"  
                                  break;

                              default :
                                  println "      ${c.getClass()}"  
                                  break;


                          }
                       }
                    }
                }
              	break;
       	    case hudson.model.Hudson:
        	    //println s.getContext().url;
              	break;
        }
      
        
    }
}