Bulk upload user using JSON file to Azure B2C active directory in Java

I connected my java code to the Azure B2C active directory and used

User user = graphClient.users("611us0f2a-7608-4edd-8c4c-7871d8e70b8e").buildRequest().get();

I got result in get() request which mean my connection is correct, now I wan to bulk upload users that are existing in my local db, I created a JSON format file which (user_data.json), it looks like this -

{
  "users": [
    {
      "displayName": "Amanda Polly",
      "givenName": "Amanda",
      "surname": "Polly",
      "extension_user_type": "user",
      "identities": [
        {
          "signInType": "emailAddress",
          "issuerAssignedId": "amandapolly@gmail.com"
        }
      ],
      "extension_timezone": "PST",
      "extension_locale": "en-US",
      "extension_tenant": "EG1234"
    },
    {
      "displayName": "Lowa Doe",
      "givenName": "Lowa",
      "surname": "Doe",
      "extension_user_type": "user",
      "identities": [
        {
          "signInType": "userName",
          "issuerAssignedId": "lowadow123"
        }
      ],
      "extension_timezone": "PST",
      "extension_locale": "en-US",
      "extension_tenant": "EG1234"
    }
   ]
}

Here in the JSON, I have a wrapper "users" and then followed by all the users (2 users as of now if you see in JSON), so now I have to create them using mircosoft graph api, how do I proceed? what i know, i have to covert each of the user into an object and the use post() to send to create them in the directory.

Please suggest a solution for how to do it.

||For you to read Allen, as you suggested, when the code is coming to,

private static void updateExtension(String userID, IGraphServiceClient graphClient) 
	{
		User extensionForUser = new User();
		extensionForUser.additionalDataManager().put("extension_dfa4f1a9a2f94cd1bf8826c50d4d0464_user_type", new JsonPrimitive(extension_user_type));
		extensionForUser.additionalDataManager().put("extension_dfa4f1a9a2f94cd1bf8826c50d4d0464_timezone", new JsonPrimitive(extension_timezone));
		extensionForUser.additionalDataManager().put("extension_dfa4f1a9a2f94cd1bf8826c50d4d0464_extension_locale", new JsonPrimitive(extension_locale));
		extensionForUser.additionalDataManager().put("extension_dfa4f1a9a2f94cd1bf8826c50d4d0464_tenant", new JsonPrimitive(extension_tenant));
        graphClient.users(userID)
                .buildRequest()
                .patch(extensionForUser);
		
	}

It is breaking at .patch(extensionForUser) --> with error like

Error message: Resource 'null' does not exist or one of its queried reference-property objects are not present.

PATCH https://graph.microsoft.com/v1.0/users/null
SdkVersion : graph-java/v1.9.0
Authorization : Bearer eyJ0eXAiOiJKV1QiLCJub25jZSI[...]
{"extension_dfa4f1a9a2f94cd1bf8826c50d4d0464_tenan[...]

404 : Not Found
[...]

But when I checked my Azure Directory, the user was created. Because when i re ran the code, it said a user already exist with same principal name.

Also since it is breaking in the first iteration, users to be created behind this are not getting created.

Update 2 :

Update 3 : Explanation to what I tried.

userID = userCreateCall(displayName, givenName, surname, extension_user_type, extension_timezone, extension_locale, extension_tenant, signInType, issuerAssignedId, graphClient);
				System.out.println(userID);
				updateExtension(userID, graphClient, extension_user_type, extension_timezone, extension_locale, extension_tenant);

If you see I have a for loop that will iterate through every user and in every iteration, it will pick [displayName, givenName, surname, extension_user_type, extension_timezone, extension_locale, extension_tenant, signInType, issuerAssignedId] for each user and pass it as a parameter to userCreateCall() method as you can see in above code, I am also passing graphClient within the param.

This is my userCreateCall() method,

User createNewUser = new User();
		createNewUser.displayName = displayName;
		createNewUser.givenName = givenName;
		createNewUser.surname = surname;
		
		LinkedList<ObjectIdentity> identitiesList = new LinkedList<ObjectIdentity>();
		ObjectIdentity identities = new ObjectIdentity();
		identities.signInType = signInType;
		identities.issuerAssignedId = issuerAssignedId;
		identities.issuer = "demoUserEngine.onmicrosoft.com";
		identitiesList.add(identities);
		
		createNewUser.identities = identitiesList;
		
		PasswordProfile passwordProfile = new PasswordProfile();
		passwordProfile.password = "passwordPASSWORD!";
		passwordProfile.forceChangePasswordNextSignIn = false;
		
		createNewUser.passwordProfile = passwordProfile;
		createNewUser.passwordPolicies = "DisablePasswordExpiration";
		
		User buildUserRequest = graphClient.users()
								.buildRequest()
								.post(createNewUser);
		
		
		return createNewUser.id;

I am returning createNewUser.id but I think it is coming NULL here, hence

userID = userCreateCall(displayName, givenName, surname, extension_user_type, extension_timezone, extension_locale, extension_tenant, signInType, issuerAssignedId, graphClient);
System.out.println(userID); // THIS IS giving NULL

So when calling update updateExtension userID is going as NULL,

I commented the updateExtension method so that I wont have to use userID and code did not break, no exception in user creation, just the userID is coming NULL.

You can't create the user in Azure B2C with your extension attributes directly.

We should create the user with the normal attributes first and then update the extension attributes for the user.

First of all you need to create the extension attributes (extension_user_type, extension_timezone, extension_locale, extension_tenant) in Azure Portal by following Create a custom attribute. Please note you just enter user_type, timezone, locale, tenant as the name of the extension attribute.

Then it will generate the extension attribute with the format: extension_ApplicationClientID_attributename, where the ApplicationClientID is the Application (client) ID of the b2c-extensions-app application (found in App registrations > All Applications in the Azure portal).

Note that the Application (client) ID as it's represented in the extension attribute name includes no hyphens. For example, my application id of b2c-extensions-app application is a554ad42-83c8-475e-a9aa-ac09a9h25c67. But the actual extension attribute is extension_a554ad4283c8475ea9aaac09a9h25c67_attributename, which has removed all the -. See reference here.

Now we are preparing to create the user. Please refer to my code:

public static void main(String[] args) {
List<String> scopes = Arrays.asList("https://graph.microsoft.com/.default");
String clientId = "3******9-5a11-4823-88de-13*******cad";
String clientSecret = "**********************************";
String tenant = "allentest001.onmicrosoft.com";
ClientCredentialProvider authProvider = new ClientCredentialProvider(
clientId,
scopes,
clientSecret,
tenant,
NationalCloud.Global);
IGraphServiceClient graphClient = GraphServiceClient.builder().authenticationProvider(authProvider).buildClient();
String userId = createUser(graphClient);
updateExtension(userId, graphClient);
}
private static String createUser(IGraphServiceClient graphClient) {
User user = new User();
user.displayName = "Amanda Polly";
user.givenName = "Amanda";
user.surname = "Polly";
LinkedList<ObjectIdentity> identitiesList = new LinkedList<ObjectIdentity>();
ObjectIdentity identities = new ObjectIdentity();
identities.signInType = "emailAddress";
identities.issuer = "allentest001.onmicrosoft.com";
identities.issuerAssignedId = "amandapolly@gmail.com";
identitiesList.add(identities);
user.identities = identitiesList;
PasswordProfile passwordProfile = new PasswordProfile();
passwordProfile.password = "{your password here}";
passwordProfile.forceChangePasswordNextSignIn = false;
user.passwordProfile = passwordProfile;
user.passwordPolicies = "DisablePasswordExpiration";
User newUser = graphClient.users()
.buildRequest()
.post(user);
return newUser.id;
}
private static void updateExtension(String userId, IGraphServiceClient graphClient) {
User user = new User();
user.additionalDataManager().put("extension_a554ad4283c8475ea9aaac09a9h25c67_user_type", new JsonPrimitive("user"));
user.additionalDataManager().put("extension_a554ad4283c8475ea9aaac09a9h25c67_timezone", new JsonPrimitive("PST"));
user.additionalDataManager().put("extension_a554ad4283c8475ea9aaac09a9h25c67_extension_locale", new JsonPrimitive("PST"));
user.additionalDataManager().put("extension_a554ad4283c8475ea9aaac09a9h25c67_tenant", new JsonPrimitive("EG1234"));
graphClient.users(userId)
.buildRequest()
.patch(user);
}

Please note you should set a password while creating the user. (see details in my code)

To create single user at a time, you need to make call for each of your user in Java. Please refer the API doc for that here. But Graph SDK also supports batching. You can compose your JSON payload consisting of individual requests and make a single POST to $batch endpoint. Please refer this for details.

NOTE: For current limitations with JSON batching in Microsoft Graph, see Known Issues.