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Bulk edit usernames that are emails

Is it possible to bulk edit usernames that email addresses to eliminate @emailaddress? this is to ensure GDPR compliance

2 answers

1 accepted

1 vote
Answer accepted

Hi @Joe Ben Clark

Yes, a simple script using the rename method of Crowd REST API will do. For instance in Groovy:

import groovy.json.JsonSlurper
import groovy.json.JsonOutput

CROWD_SERVER_URL = "http://localhost:8095/crowd"

boolean isEmailAddress(String s){
emailPattern = /[_A-Za-z0-9-]+(.[_A-Za-z0-9-]+)*@[A-Za-z0-9]+(.[A-Za-z0-9]+)*(.[A-Za-z]{2,})/
return s ==~ emailPattern

def removeEmailDomainFromUsername(String username){
def url = "${CROWD_SERVER_URL}/rest/usermanagement/1/user/rename?username=${URLEncoder.encode(username)}"
def body = JsonOutput.toJson(["new-name":username.substring(0,username.indexOf('@'))]).getBytes('UTF-8')
def connection = new URL(url).openConnection()
connection.setRequestProperty('Authorization', "Basic ${(APPLICATION_NAME + ':' + APPLICATION_PASSWORD).bytes.encodeBase64().toString()}")
connection.setRequestProperty('Content-Type', 'application/json')
connection.setRequestProperty('Accept', 'application/json')
if (connection.responseCode.equals(200)){
return true
} else return false

def searchAllUsers(){
def url = "${CROWD_SERVER_URL}/rest/usermanagement/1/search?entity-type=user"
def connection = new URL(url).openConnection()
connection.setRequestProperty('Authorization', "Basic ${(APPLICATION_NAME + ':' + APPLICATION_PASSWORD).bytes.encodeBase64().toString()}")
connection.setRequestProperty('Accept', 'application/json')
if (connection.responseCode.equals(200)){
def json = connection.inputStream.withCloseable { inStream ->
new JsonSlurper().parse( inStream as InputStream )
} else return []

searchAllUsers().each{ username ->
if (isEmailAddress(username)){
println "${username} is an email address. Trying to remove the domain extension..."
if (removeEmailDomainFromUsername(username)){
println "Success!"
} else{
println "Failed to remove domain extension"
} else{
println "${username}: nothing to do here"


Screen Shot 2018-07-18 at 18.38.00.png

Untitled2.pngHope this helps!


Hi joe,

Out of interest, wondering how removing the domain from the username helps with GDPR compliance when the username is still it’s own field? 

Given a persons name is still PII, my understanding is that all this info would still need to comply with GDPR requirements.




We use crowd for Confluence and JIRA in a public setting. In JIRA, Usernames are exposed when tagging individuals in comments. To avoid this, we intend to convert email based usernames.

Ah rightio - makes sense!



Awesome!  But I would also like to recommend this one if you want cheap & easy version that enables the user to send mass email without complications.

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