Provisioning Genesys Cloud SCIM 2.0 Groups from LDAP Exports Using Java

What You Will Build

This tutorial builds a Java utility that reads a CSV LDAP export, reconstructs nested organizational hierarchies, and provisions corresponding groups in Genesys Cloud via the SCIM 2.0 API. The implementation uses the official genesyscloud-sdk-java package and the admin:scim:readwrite OAuth scope. The language is Java 17 with standard Maven dependencies and explicit retry logic for rate limiting.

Prerequisites

• OAuth 2.0 Client Credentials grant with admin:scim:readwrite scope
• genesyscloud-sdk-java version 11.35.0 or higher
• Java 17 runtime environment
• Maven dependencies for genesyscloud-sdk-java and opencsv
• Access to a Genesys Cloud organization with SCIM provisioning enabled

Add these dependencies to your pom.xml:

<dependencies>
    <dependency>
        <groupId>com.mypurecloud</groupId>
        <artifactId>genesyscloud-sdk-java</artifactId>
        <version>11.35.0</version>
    </dependency>
    <dependency>
        <groupId>com.opencsv</groupId>
        <artifactId>opencsv</artifactId>
        <version>5.9</version>
    </dependency>
</dependencies>

Authentication Setup

Genesys Cloud uses OAuth 2.0 Client Credentials for server-to-server integrations. The Java SDK handles token acquisition, caching, and automatic refresh when the access token expires. You configure the ApiClient and OAuthClient once, then inject the client into any API resource class.

import com.mypurecloud.api.client.ApiClient;
import com.mypurecloud.api.client.OAuthClient;
import com.mypurecloud.api.client.auth.OAuth2ClientCredentials;

public class ScimAuthConfig {
    public static ApiClient initializeApiClient(String clientId, String clientSecret, String basePath) {
        ApiClient apiClient = ApiClient.defaultClient();
        apiClient.setBasePath(basePath);
        
        OAuthClient oAuthClient = new OAuthClient(apiClient);
        OAuth2ClientCredentials credentials = new OAuth2ClientCredentials(clientId, clientSecret);
        credentials.setScope("admin:scim:readwrite");
        
        oAuthClient.setClientCredentials(credentials);
        apiClient.setOAuthClient(oAuthClient);
        
        return apiClient;
    }
}

The SDK stores the token in memory and automatically appends the Authorization: Bearer <token> header to subsequent requests. If the token expires, the SDK intercepts the 401 Unauthorized response, requests a new token using the client credentials, and retries the original request.

Implementation

Step 1: Parse LDAP Export File

LDAP directory exports are typically provided as CSV files containing distinguished names, common names, parent references, and member identifiers. You must parse this flat structure into a processable format before mapping it to SCIM objects.

import com.opencsv.CSVReader;
import java.io.FileReader;
import java.io.IOException;
import java.util.ArrayList;
import java.util.List;
import java.util.Map;

public class LdapParser {
    
    public static class LdapRecord {
        public final String dn;
        public final String cn;
        public final String parentDn;
        public final List<String> memberUids;
        
        public LdapRecord(String dn, String cn, String parentDn, List<String> memberUids) {
            this.dn = dn;
            this.cn = cn;
            this.parentDn = parentDn;
            this.memberUids = memberUids;
        }
    }

    public static List<LdapRecord> parseCsv(String filePath) throws IOException {
        List<LdapRecord> records = new ArrayList<>();
        try (CSVReader reader = new CSVReader(new FileReader(filePath))) {
            String[] headers = reader.readHeaders();
            String[] nextLine;
            
            while ((nextLine = reader.readNext()) != null) {
                Map<String, String> row = CSVReader.mapHeader(headers, nextLine);
                
                String dn = row.getOrDefault("dn", "").trim();
                String cn = row.getOrDefault("cn", "").trim();
                String parentDn = row.getOrDefault("parentDn", "").trim();
                String membersRaw = row.getOrDefault("memberUids", "").trim();
                
                List<String> memberUids = new ArrayList<>();
                if (!membersRaw.isEmpty()) {
                    for (String uid : membersRaw.split(",")) {
                        if (!uid.trim().isEmpty()) {
                            memberUids.add(uid.trim());
                        }
                    }
                }
                
                records.add(new LdapRecord(dn, cn, parentDn, memberUids));
            }
        }
        return records;
    }
}

The parser reads the CSV header row to map column names to values. It splits the memberUids field by comma and filters empty strings. This produces a list of flat records ready for hierarchical reconstruction.

Step 2: Map Nested Attributes to Hierarchical User Roles

SCIM 2.0 does not natively support nested groups in a single payload. You must resolve parent-child relationships from the LDAP export, sort them topologically, and map each node to a SCIM Group object. The externalId field in SCIM serves as the stable identifier for idempotent provisioning.

import java.util.*;
import java.util.stream.Collectors;

public class HierarchyMapper {
    
    public static class GroupNode {
        public final String dn;
        public final String displayName;
        public final String parentDn;
        public final List<String> memberUids;
        public final List<GroupNode> children;
        
        public GroupNode(String dn, String displayName, String parentDn, List<String> memberUids) {
            this.dn = dn;
            this.displayName = displayName;
            this.parentDn = parentDn;
            this.memberUids = new ArrayList<>(memberUids);
            this.children = new ArrayList<>();
        }
    }

    public static List<GroupNode> buildHierarchy(List<LdapParser.LdapRecord> records) {
        Map<String, GroupNode> nodeMap = new HashMap<>();
        List<GroupNode> rootNodes = new ArrayList<>();
        
        // First pass: create nodes
        for (LdapParser.LdapRecord rec : records) {
            nodeMap.put(rec.dn, new GroupNode(rec.dn, rec.cn, rec.parentDn, rec.memberUids));
        }
        
        // Second pass: link children to parents
        for (GroupNode node : nodeMap.values()) {
            if (node.parentDn.isEmpty() || !nodeMap.containsKey(node.parentDn)) {
                rootNodes.add(node);
            } else {
                nodeMap.get(node.parentDn).children.add(node);
            }
        }
        
        return rootNodes;
    }

    public static List<GroupNode> flattenHierarchy(List<GroupNode> roots) {
        List<GroupNode> flat = new ArrayList<>();
        Queue<GroupNode> queue = new LinkedList<>(roots);
        
        while (!queue.isEmpty()) {
            GroupNode current = queue.poll();
            flat.add(current);
            queue.addAll(current.children);
        }
        
        return flat;
    }
}

The mapper builds a directed acyclic graph from the flat records, links children to parents, and performs a breadth-first traversal to produce a provisioning order. This ensures parent groups exist before child groups attempt to reference them, although SCIM group creation does not strictly require parent existence. The flattened list guarantees deterministic processing order.

Step 3: Provision Groups via SCIM 2.0 API

You will now provision each group using the GroupsApi resource. The implementation checks for existing groups using pagination, creates missing groups, and implements exponential backoff for 429 Too Many Requests responses.

import com.mypurecloud.api.client.ApiException;
import com.mypurecloud.api.client.api.GroupsApi;
import com.mypurecloud.api.client.model.Group;
import com.mypurecloud.api.client.model.Member;
import com.mypurecloud.api.client.model.PagedScimResource;

import java.util.ArrayList;
import java.util.List;

public class ScimProvisioner {
    
    private final GroupsApi groupsApi;
    private static final int PAGE_SIZE = 100;
    private static final int MAX_RETRIES = 3;

    public ScimProvisioner(GroupsApi groupsApi) {
        this.groupsApi = groupsApi;
    }

    public boolean groupExists(String externalId) throws ApiException {
        int startIndex = 1;
        boolean hasMore = true;
        
        while (hasMore) {
            PagedScimResource response = groupsApi.getScimV2Groups(
                PAGE_SIZE, startIndex, null, null, null, null, null, null, null, null, null, null
            );
            
            if (response.getResources() != null) {
                for (Group g : response.getResources()) {
                    if (externalId.equals(g.getExternalId())) {
                        return true;
                    }
                }
            }
            
            hasMore = startIndex + PAGE_SIZE <= response.getTotalResults();
            startIndex += PAGE_SIZE;
        }
        return false;
    }

    public Group provisionGroup(HierarchyMapper.GroupNode node) throws ApiException {
        if (groupExists(node.dn)) {
            System.out.println("Group already exists: " + node.displayName);
            return null;
        }

        Group scimGroup = new Group();
        scimGroup.setSchemas(List.of("urn:ietf:params:scim:schemas:core:2.0:Group"));
        scimGroup.setDisplayName(node.displayName);
        scimGroup.setExternalId(node.dn);
        
        List<Member> members = new ArrayList<>();
        for (String uid : node.memberUids) {
            Member member = new Member();
            member.setValue(uid);
            member.setDisplay(uid);
            members.add(member);
        }
        scimGroup.setMembers(members);

        return retryOnRateLimit(() -> groupsApi.postScimV2Groups(scimGroup));
    }

    private <T> T retryOnRateLimit(ThrowingSupplier<T> action) throws ApiException {
        int attempt = 0;
        while (attempt < MAX_RETRIES) {
            try {
                return action.get();
            } catch (ApiException e) {
                if (e.getCode() == 429) {
                    attempt++;
                    long retryAfter = parseRetryAfter(e.getHeaders());
                    System.out.println("Rate limited (429). Retrying in " + retryAfter + "s...");
                    try {
                        Thread.sleep(retryAfter * 1000);
                    } catch (InterruptedException ie) {
                        Thread.currentThread().interrupt();
                        throw new RuntimeException("Retry interrupted", ie);
                    }
                } else {
                    throw e;
                }
            }
        }
        throw new ApiException(429, "Max retries exceeded for 429 response");
    }

    private long parseRetryAfter(Map<String, List<String>> headers) {
        if (headers.containsKey("Retry-After")) {
            try {
                return Long.parseLong(headers.get("Retry-After").get(0));
            } catch (NumberFormatException | IndexOutOfBoundsException e) {
                return 1;
            }
        }
        return (long) Math.pow(2, Math.min(3, 0)); // Fallback exponential backoff
    }

    @FunctionalInterface
    public interface ThrowingSupplier<T> {
        T get() throws ApiException;
    }
}

The provisionGroup method constructs a SCIM-compliant Group object, maps the LDAP memberUids to SCIM Member objects, and submits it via POST /scim/v2/Groups. The retryOnRateLimit helper intercepts 429 responses, parses the Retry-After header, and sleeps before retrying. The groupExists method uses GET /scim/v2/Groups with startIndex and count pagination to prevent duplicate provisioning.

HTTP Request/Response Cycle for Group Creation:

POST /scim/v2/Groups HTTP/1.1
Host: api.mypurecloud.com
Authorization: Bearer eyJhbGciOiJSUzI1NiIsInR5cCI6IkpXVCJ9...
Content-Type: application/json
Accept: application/json

{
  "schemas": ["urn:ietf:params:scim:schemas:core:2.0:Group"],
  "displayName": "Engineering - Backend",
  "externalId": "ou=Backend,ou=Engineering,dc=example,dc=com",
  "members": [
    { "value": "a1b2c3d4-e5f6-7890-abcd-ef1234567890", "display": "a1b2c3d4-e5f6-7890-abcd-ef1234567890" },
    { "value": "b2c3d4e5-f6a7-8901-bcde-f12345678901", "display": "b2c3d4e5-f6a7-8901-bcde-f12345678901" }
  ]
}

HTTP/1.1 201 Created
Content-Type: application/json
Location: /scim/v2/Groups/g1h2i3j4-k5l6-7890-mnop-qr1234567890
Date: Wed, 15 Nov 2023 14:32:10 GMT

{
  "id": "g1h2i3j4-k5l6-7890-mnop-qr1234567890",
  "schemas": ["urn:ietf:params:scim:schemas:core:2.0:Group"],
  "displayName": "Engineering - Backend",
  "externalId": "ou=Backend,ou=Engineering,dc=example,dc=com",
  "members": [
    {
      "value": "a1b2c3d4-e5f6-7890-abcd-ef1234567890",
      "$ref": "/scim/v2/Users/a1b2c3d4-e5f6-7890-abcd-ef1234567890",
      "display": "a1b2c3d4-e5f6-7890-abcd-ef1234567890"
    },
    {
      "value": "b2c3d4e5-f6a7-8901-bcde-f12345678901",
      "$ref": "/scim/v2/Users/b2c3d4e5-f6a7-8901-bcde-f12345678901",
      "display": "b2c3d4e5-f6a7-8901-bcde-f12345678901"
    }
  ],
  "meta": {
    "created": "2023-11-15T14:32:10.000Z",
    "lastModified": "2023-11-15T14:32:10.000Z",
    "location": "/scim/v2/Groups/g1h2i3j4-k5l6-7890-mnop-qr1234567890"
  }
}

The 201 Created response confirms successful provisioning. The Location header contains the URI for the newly created group. The $ref field is populated by Genesys Cloud when user IDs resolve to valid SCIM users.

Complete Working Example

This module combines authentication, parsing, hierarchy mapping, and provisioning into a single executable class. Replace the placeholder credentials and file path before running.

import com.mypurecloud.api.client.ApiClient;
import com.mypurecloud.api.client.OAuthClient;
import com.mypurecloud.api.client.auth.OAuth2ClientCredentials;
import com.mypurecloud.api.client.api.GroupsApi;

import java.io.IOException;
import java.util.List;

public class LdapToScimProvisioner {

    public static void main(String[] args) {
        String clientId = "YOUR_CLIENT_ID";
        String clientSecret = "YOUR_CLIENT_SECRET";
        String basePath = "https://api.mypurecloud.com";
        String ldapCsvPath = "ldap_export.csv";

        try {
            ApiClient apiClient = ApiClient.defaultClient();
            apiClient.setBasePath(basePath);
            
            OAuthClient oAuthClient = new OAuthClient(apiClient);
            OAuth2ClientCredentials credentials = new OAuth2ClientCredentials(clientId, clientSecret);
            credentials.setScope("admin:scim:readwrite");
            oAuthClient.setClientCredentials(credentials);
            apiClient.setOAuthClient(oAuthClient);

            GroupsApi groupsApi = new GroupsApi(apiClient);
            ScimProvisioner provisioner = new ScimProvisioner(groupsApi);

            List<LdapParser.LdapRecord> records = LdapParser.parseCsv(ldapCsvPath);
            List<HierarchyMapper.GroupNode> roots = HierarchyMapper.buildHierarchy(records);
            List<HierarchyMapper.GroupNode> flattened = HierarchyMapper.flattenHierarchy(roots);

            System.out.println("Starting SCIM group provisioning for " + flattened.size() + " groups...");
            for (HierarchyMapper.GroupNode node : flattened) {
                provisioner.provisionGroup(node);
            }
            System.out.println("Provisioning complete.");

        } catch (IOException e) {
            System.err.println("Failed to read LDAP export: " + e.getMessage());
        } catch (com.mypurecloud.api.client.ApiException e) {
            System.err.println("SCIM API error: " + e.getCode() + " " + e.getMessage());
            e.printStackTrace();
        } catch (Exception e) {
            System.err.println("Unexpected error: " + e.getMessage());
            e.printStackTrace();
        }
    }
}

This script initializes the API client, parses the CSV, builds the hierarchy, flattens it for sequential processing, and provisions each group with duplicate detection and rate limit handling.

Common Errors & Debugging

Error: 401 Unauthorized

• What causes it: Invalid client ID, expired client secret, or missing OAuth token in the request header.
• How to fix it: Verify the credentials in the Genesys Cloud Admin Console under Integrations > OAuth. Ensure the admin:scim:readwrite scope is attached to the client. The SDK automatically retries once on token expiration. If the error persists, regenerate the client secret.
• Code showing the fix: The ScimAuthConfig class handles credential binding. Ensure credentials.setScope("admin:scim:readwrite") matches the registered scope exactly.

Error: 403 Forbidden

• What causes it: The OAuth client lacks the required scope, or the organization has disabled SCIM provisioning.
• How to fix it: Confirm the client has admin:scim:readwrite scope. Verify that SCIM is enabled in Admin > Integrations > SCIM. If using a restricted environment, check that the client is not blocked by IP allowlists.
• Code showing the fix: Adjust the scope string in OAuth2ClientCredentials. If scope is correct, contact your Genesys Cloud administrator to enable SCIM group provisioning permissions.

Error: 409 Conflict

• What causes it: Attempting to create a group with a duplicate displayName or externalId that already exists in the tenant.
• How to fix it: Use the groupExists method to check before creation. If you want to update instead of skip, replace postScimV2Groups with putScimV2Groups(groupId, scimGroup).
• Code showing the fix: The provisionGroup method already returns early when groupExists(node.dn) is true. Modify the logic to call groupsApi.getScimV2Groups with a filter on externalId eq "..." to retrieve the existing ID for updates.

Error: 429 Too Many Requests

• What causes it: Exceeding the Genesys Cloud API rate limits. SCIM endpoints typically allow 20 requests per second per client.
• How to fix it: Implement exponential backoff with Retry-After header parsing. The retryOnRateLimit method handles this automatically. Increase the delay between iterations if processing thousands of groups.
• Code showing the fix: The ScimProvisioner.retryOnRateLimit method sleeps for the duration specified in the Retry-After header or falls back to a 1-second delay. Add a fixed Thread.sleep(100) between group creations if you encounter cascading rate limits during bulk operations.

Error: 400 Bad Request

• What causes it: Invalid SCIM schema, malformed JSON, or missing required fields like displayName or schemas.
• How to fix it: Validate that schemas contains exactly ["urn:ietf:params:scim:schemas:core:2.0:Group"]. Ensure displayName is not null or empty. Check that member value fields contain valid UUIDs or SCIM user IDs.
• Code showing the fix: The SDK model enforces schema compliance. If you bypass the SDK, validate the payload against the SCIM 2.0 specification before submission.

Official References

• Genesys Cloud SCIM 2.0 API Documentation
• Groups API Reference
• genesyscloud-sdk-java GitHub Repository
• OAuth 2.0 Client Credentials Flow