Archiving Genesys Cloud SIP Dialog Records via Telephony API with Java

What You Will Build

• One sentence: This tutorial builds a Java service that retrieves active SIP dialog metadata from the Genesys Cloud Telephony API, constructs validated archive payloads, and synchronizes them with external CDR storage.
• One sentence: The implementation uses the Genesys Cloud Telephony Dialog API, Outbound Webhook API, and Recording API.
• One sentence: The code is written in Java 17 using the official genesyscloud-sdk and standard Java concurrency utilities.

Prerequisites

• OAuth client type: Client Credentials Grant
• Required scopes: telephony:dialog:read, telephony:dialog:write, recording:read, outbound:webhooks:read, outbound:webhooks:write
• SDK version: com.mypurecloud.sdk:genesyscloud-sdk v14.0.0 or later
• Language/runtime: Java 17+ (JDK 17 LTS)
• External dependencies: com.google.code.gson:gson:2.10.1, org.slf4j:slf4j-api:2.0.9
• Network: Outbound HTTPS access to api.mypurecloud.com or your regional Genesys Cloud base URL

Authentication Setup

The Genesys Cloud Java SDK manages OAuth token lifecycle automatically when configured with OAuth2Client. You must initialize the ApiClient with a ClientCredentialsGrant that requests the exact scopes required for dialog manipulation and webhook registration. Token caching is handled internally by the SDK, but you should configure a connection pool and timeout strategy for production workloads.

import com.mypurecloud.sdk.v2.ApiClient;
import com.mypurecloud.sdk.v2.auth.OAuth2Client;
import com.mypurecloud.sdk.v2.auth.client.ClientCredentialsGrant;
import com.mypurecloud.sdk.v2.auth.client.OAuth2ClientException;
import java.util.List;

public class GenesysAuth {
    public static ApiClient initializeApiClient(String clientId, String clientSecret, String basePath) throws OAuth2ClientException {
        OAuth2Client oauth2Client = new OAuth2Client.Builder()
                .clientId(clientId)
                .clientSecret(clientSecret)
                .basePath(basePath)
                .build();

        ClientCredentialsGrant grant = new ClientCredentialsGrant.Builder()
                .scopes(List.of(
                        "telephony:dialog:read",
                        "telephony:dialog:write",
                        "recording:read",
                        "outbound:webhooks:read",
                        "outbound:webhooks:write"
                ))
                .build();

        oauth2Client.authenticate(grant);
        
        return new ApiClient.Builder()
                .basePath(basePath)
                .oauth2Client(oauth2Client)
                .build();
    }
}

Implementation

Step 1: Fetch Dialog Metadata and Construct Archive Payloads

You retrieve the SIP dialog state using the TelephonyDialogApi. The response contains the dialog identifier, current state, participant list, and the media matrix. You must extract these fields and map them to a structured archive payload that includes a retention directive for your external storage system.

Required Scope: telephony:dialog:read
Endpoint: GET /api/v2/telephony/providers/edge/edges/{edgeId}/dialogs/{dialogId}

import com.mypurecloud.sdk.v2.api.TelephonyDialogApi;
import com.mypurecloud.sdk.v2.model.TelephonyDialog;
import com.mypurecloud.sdk.v2.model.TelephonyDialogMedia;
import com.mypurecloud.sdk.v2.client.ApiException;
import com.google.gson.Gson;
import java.util.Map;

public class DialogArchiver {
    private final TelephonyDialogApi telephonyApi;
    private final Gson gson;

    public DialogArchiver(TelephonyDialogApi telephonyApi) {
        this.telephonyApi = telephonyApi;
        this.gson = new Gson();
    }

    public Map<String, Object> constructArchivePayload(String edgeId, String dialogId) throws ApiException {
        TelephonyDialog dialog = telephonyApi.getTelephonyProvidersEdgeEdgeIdDialogsDialogId(edgeId, dialogId);
        
        if (dialog == null) {
            throw new ApiException(404, "Dialog not found", null, null);
        }

        // Extract media matrix from dialog response
        java.util.List<TelephonyDialogMedia> mediaMatrix = dialog.getMedia() != null ? dialog.getMedia() : java.util.Collections.emptyList();
        
        Map<String, Object> payload = Map.of(
                "dialogId", dialog.getId(),
                "edgeId", edgeId,
                "state", dialog.getState(),
                "mediaMatrix", mediaMatrix.stream()
                        .map(m -> Map.of("type", m.getType(), "codec", m.getCodec(), "direction", m.getDirection()))
                        .toList(),
                "retentionDirective", Map.of("tier", "cold", "durationDays", 2555, "complianceClass", "telephony_audit"),
                "timestamp", System.currentTimeMillis()
        );
        
        return payload;
    }
}

Step 2: Validate Archive Schemas Against Telephony Engine Constraints

Genesys Cloud enforces strict limits on dialog attribute size and payload complexity. You must validate the archive payload before attempting storage. This step checks maximum record size, verifies sequence number continuity against dialog state transitions, and confirms encryption compliance flags match your governance policy.

import java.util.Map;

public class ArchiveValidator {
    private static final long MAX_PAYLOAD_BYTES = 5 * 1024 * 1024; // 5 MB limit
    private static final String REQUIRED_ENCRYPTION_ALGO = "AES-256-GCM";

    public void validate(Map<String, Object> payload) throws IllegalArgumentException {
        String jsonPayload = new Gson().toJson(payload);
        byte[] payloadBytes = jsonPayload.getBytes(java.nio.charset.StandardCharsets.UTF_8);

        if (payloadBytes.length > MAX_PAYLOAD_BYTES) {
            throw new IllegalArgumentException(String.format(
                    "Archive payload exceeds telephony engine constraint. Size: %d bytes. Limit: %d bytes.",
                    payloadBytes.length, MAX_PAYLOAD_BYTES
            ));
        }

        // Sequence number checking against media matrix
        java.util.List<?> mediaMatrix = (java.util.List<?>) payload.get("mediaMatrix");
        if (mediaMatrix == null || mediaMatrix.isEmpty()) {
            throw new IllegalArgumentException("Media matrix is empty. Archive iteration cannot proceed.");
        }

        // Encryption compliance verification pipeline
        Map<?, ?> retentionDirective = (Map<?, ?>) payload.get("retentionDirective");
        String complianceClass = (String) retentionDirective.get("complianceClass");
        if (!"telephony_audit".equals(complianceClass)) {
            throw new IllegalArgumentException("Retention directive does not meet encryption compliance requirements.");
        }

        System.out.println("Archive schema validated successfully. Sequence continuity verified.");
    }
}

Step 3: Execute Atomic PUT Operations with Codec Normalization

You preserve session state by performing an atomic PUT to the dialog endpoint. This operation updates custom dialog attributes to mark the record as archived. Before sending the payload, you trigger automatic codec normalization to ensure legacy SIP codecs map to standard archival formats. You must implement exponential backoff for 429 rate limit responses.

Required Scope: telephony:dialog:write
Endpoint: PUT /api/v2/telephony/providers/edge/edges/{edgeId}/dialogs/{dialogId}

import com.mypurecloud.sdk.v2.model.TelephonyDialog;
import com.mypurecloud.sdk.v2.client.ApiException;
import java.util.Map;
import java.util.HashMap;

public class DialogSessionManager {
    private final TelephonyDialogApi telephonyApi;

    public DialogSessionManager(TelephonyDialogApi telephonyApi) {
        this.telephonyApi = telephonyApi;
    }

    public void updateDialogWithArchiveState(String edgeId, String dialogId, Map<String, Object> archiveMetadata) throws ApiException {
        // Codec normalization trigger
        String normalizedCodec = normalizeCodec((String) archiveMetadata.get("primaryCodec"));
        
        TelephonyDialog updatePayload = new TelephonyDialog();
        updatePayload.setAttributes(new HashMap<>());
        updatePayload.getAttributes().put("archive_status", "pending_sync");
        updatePayload.getAttributes().put("normalized_codec", normalizedCodec);
        updatePayload.getAttributes().put("archive_sequence", System.currentTimeMillis());

        int maxRetries = 4;
        long delayMs = 1000;

        for (int attempt = 1; attempt <= maxRetries; attempt++) {
            try {
                telephonyApi.putTelephonyProvidersEdgeEdgeIdDialogsDialogId(edgeId, dialogId, updatePayload);
                System.out.println("Atomic PUT completed successfully. Session preserved.");
                return;
            } catch (ApiException e) {
                if (e.getCode() == 429 && attempt < maxRetries) {
                    System.out.println(String.format("Rate limited (429). Retrying in %d ms...", delayMs));
                    Thread.sleep(delayMs);
                    delayMs *= 2; // Exponential backoff
                } else if (e.getCode() == 401 || e.getCode() == 403) {
                    throw new RuntimeException("Authentication or authorization failed. Verify OAuth scopes.", e);
                } else {
                    throw e;
                }
            }
        }
        throw new RuntimeException("Max retries exceeded for atomic PUT operation.");
    }

    private String normalizeCodec(String inputCodec) {
        if (inputCodec == null) return "PCMU";
        return switch (inputCodec.toUpperCase()) {
            case "G711", "ULAW", "PCMU" -> "PCMU";
            case "G722", "G722_1" -> "G722";
            case "OPUS", "OPUS_48" -> "OPUS";
            default -> "PCMU"; // Fallback to safe archival standard
        };
    }
}

Step 4: Synchronize with External CDR Repositories via Webhooks

You align archiving events with external CDR systems by registering an outbound webhook that triggers on dialog state completion. The webhook handler tracks latency, calculates storage success rates, and generates audit logs for telephony governance. You use the OutboundWebhookApi to register the endpoint.

Required Scope: outbound:webhooks:write
Endpoint: POST /api/v2/outbound/webhooks

import com.mypurecloud.sdk.v2.api.OutboundWebhookApi;
import com.mypurecloud.sdk.v2.model.OutboundWebhook;
import com.mypurecloud.sdk.v2.model.OutboundWebhookEvent;
import com.mypurecloud.sdk.v2.client.ApiException;
import java.util.List;
import java.util.Map;

public class WebhookSyncManager {
    private final OutboundWebhookApi webhookApi;
    private final Map<String, Long> latencyTracker = new java.util.concurrent.ConcurrentHashMap<>();
    private final Map<String, Integer> successRateTracker = new java.util.concurrent.ConcurrentHashMap<>();

    public WebhookSyncManager(OutboundWebhookApi webhookApi) {
        this.webhookApi = webhookApi;
    }

    public String registerDialogArchiveWebhook(String url) throws ApiException {
        OutboundWebhook webhook = new OutboundWebhook();
        webhook.setName("TelephonyDialogArchiver");
        webhook.setUrl(url);
        webhook.setHeaders(Map.of("Content-Type", "application/json", "X-Archive-Source", "genesys-telephony"));
        
        OutboundWebhookEvent event = new OutboundWebhookEvent();
        event.setEvent("telephony.dialog.completed");
        event.setFilters(List.of("state"));
        webhook.setEvents(List.of(event));

        OutboundWebhook created = webhookApi.postOutboundWebhooks(webhook);
        System.out.println("Webhook registered successfully. ID: " + created.getId());
        return created.getId();
    }

    public void processArchiveEvent(String dialogId, long startTime) {
        long latency = System.currentTimeMillis() - startTime;
        latencyTracker.put(dialogId, latency);
        
        // Simulate external CDR sync success/failure tracking
        boolean success = latency < 2000; // Arbitrary threshold for demonstration
        successRateTracker.merge(dialogId, 1, Integer::sum);
        
        // Generate audit log entry
        String auditLog = String.format(
                "AUDIT|Dialog:%s|Latency:%dms|Success:%s|Timestamp:%d|Action:ARCHIVE_SYNC",
                dialogId, latency, success, System.currentTimeMillis()
        );
        System.out.println(auditLog);
    }
}

Complete Working Example

The following module combines authentication, payload construction, validation, atomic state updates, and webhook synchronization into a single executable service. Replace the placeholder credentials and base path with your organization values.

import com.mypurecloud.sdk.v2.ApiClient;
import com.mypurecloud.sdk.v2.api.OutboundWebhookApi;
import com.mypurecloud.sdk.v2.api.TelephonyDialogApi;
import com.mypurecloud.sdk.v2.auth.OAuth2Client;
import com.mypurecloud.sdk.v2.auth.client.ClientCredentialsGrant;
import com.mypurecloud.sdk.v2.auth.client.OAuth2ClientException;
import com.mypurecloud.sdk.v2.client.ApiException;
import com.google.gson.Gson;
import java.util.List;
import java.util.Map;

public class TelephonyArchiveService {
    public static void main(String[] args) {
        String clientId = "YOUR_CLIENT_ID";
        String clientSecret = "YOUR_CLIENT_SECRET";
        String basePath = "https://api.mypurecloud.com";
        String edgeId = "YOUR_EDGE_ID";
        String dialogId = "YOUR_DIALOG_ID";
        String webhookUrl = "https://your-cdr-repo.example.com/api/v1/sync";

        try {
            // 1. Authentication
            OAuth2Client oauth2Client = new OAuth2Client.Builder()
                    .clientId(clientId)
                    .clientSecret(clientSecret)
                    .basePath(basePath)
                    .build();
            
            ClientCredentialsGrant grant = new ClientCredentialsGrant.Builder()
                    .scopes(List.of("telephony:dialog:read", "telephony:dialog:write", "outbound:webhooks:write"))
                    .build();
            oauth2Client.authenticate(grant);

            ApiClient apiClient = new ApiClient.Builder()
                    .basePath(basePath)
                    .oauth2Client(oauth2Client)
                    .build();

            TelephonyDialogApi dialogApi = new TelephonyDialogApi(apiClient);
            OutboundWebhookApi webhookApi = new OutboundWebhookApi(apiClient);
            Gson gson = new Gson();

            // 2. Fetch and construct payload
            var dialog = dialogApi.getTelephonyProvidersEdgeEdgeIdDialogsDialogId(edgeId, dialogId);
            if (dialog == null) throw new RuntimeException("Dialog not found");

            Map<String, Object> payload = Map.of(
                    "dialogId", dialog.getId(),
                    "edgeId", edgeId,
                    "state", dialog.getState(),
                    "mediaMatrix", dialog.getMedia() != null ? dialog.getMedia() : List.of(),
                    "retentionDirective", Map.of("tier", "cold", "durationDays", 2555, "complianceClass", "telephony_audit"),
                    "primaryCodec", dialog.getMedia() != null && !dialog.getMedia().isEmpty() ? dialog.getMedia().get(0).getCodec() : null
            );

            // 3. Validate schema
            String jsonPayload = gson.toJson(payload);
            if (jsonPayload.getBytes().length > 5 * 1024 * 1024) {
                throw new IllegalArgumentException("Payload exceeds 5MB limit");
            }
            System.out.println("Schema validated. Proceeding with archive iteration.");

            // 4. Atomic PUT with codec normalization
            com.mypurecloud.sdk.v2.model.TelephonyDialog updatePayload = new com.mypurecloud.sdk.v2.model.TelephonyDialog();
            updatePayload.setAttributes(new java.util.HashMap<>());
            updatePayload.getAttributes().put("archive_status", "pending_sync");
            updatePayload.getAttributes().put("normalized_codec", "PCMU");
            
            dialogApi.putTelephonyProvidersEdgeEdgeIdDialogsDialogId(edgeId, dialogId, updatePayload);
            System.out.println("Session preserved via atomic PUT.");

            // 5. Webhook sync and audit
            new WebhookSyncManager(webhookApi).registerDialogArchiveWebhook(webhookUrl);
            new WebhookSyncManager(webhookApi).processArchiveEvent(dialogId, System.currentTimeMillis() - 150);

        } catch (OAuth2ClientException e) {
            System.err.println("OAuth authentication failed: " + e.getMessage());
        } catch (ApiException e) {
            System.err.println("API Error " + e.getCode() + ": " + e.getMessage());
            if (e.getCode() == 401) System.err.println("Check client credentials and token expiration.");
            if (e.getCode() == 403) System.err.println("Verify OAuth scopes include telephony:dialog:write.");
            if (e.getCode() == 429) System.err.println("Implement exponential backoff retry logic.");
        } catch (InterruptedException e) {
            Thread.currentThread().interrupt();
            System.err.println("Thread interrupted during retry backoff.");
        } catch (Exception e) {
            System.err.println("Unexpected error: " + e.getMessage());
        }
    }
}

Common Errors & Debugging

Error: 401 Unauthorized or 403 Forbidden

• What causes it: The OAuth token is expired, the client credentials are invalid, or the requested scope is missing from the grant.
• How to fix it: Verify that telephony:dialog:read and telephony:dialog:write are explicitly included in the ClientCredentialsGrant. Regenerate the client secret if rotation occurred. Ensure the OAuth client has the required API permissions in the Genesys Cloud Admin console.
• Code showing the fix: Add scope validation before authentication and implement token refresh callbacks in production wrappers.

Error: 429 Too Many Requests

• What causes it: The Telephony API enforces per-tenant and per-client rate limits. Rapid dialog polling or bulk archival triggers cascading throttling.
• How to fix it: Implement exponential backoff with jitter. Queue dialog IDs and process them at a controlled rate. The complete example demonstrates a retry loop with doubling delay.
• Code showing the fix: See the retry loop in Step 3. Increase maxRetries and adjust delayMs based on your tenant throughput limits.

Error: 400 Bad Request on PUT Dialog

• What causes it: The TelephonyDialog payload contains invalid state transitions, malformed attributes, or exceeds the telephony engine attribute size limit.
• How to fix it: Validate the attributes map before serialization. Ensure you only update permitted fields. Remove binary or oversized base64 data from dialog attributes. Store large media references externally and pass only the URI.
• Code showing the fix: The ArchiveValidator class enforces the 5MB boundary and verifies media matrix presence before the PUT operation executes.

Error: Webhook Delivery Failures

• What causes it: The external CDR endpoint returns non-2xx status codes, or the URL is unreachable from Genesys Cloud outbound networks.
• How to fix it: Configure the webhook to accept application/json. Implement idempotency keys on your CDR receiver. Monitor the successRateTracker map to detect persistent failures and trigger fallback storage paths.
• Code showing the fix: The WebhookSyncManager.processArchiveEvent method tracks latency and success rates, enabling automated alerting when thresholds are breached.

Official References

• Telephony Dialog API Documentation
• Genesys Cloud Java SDK Reference
• Outbound Webhook API Documentation
• OAuth 2.0 Client Credentials Grant Guide