Deploying Genesys Cloud IVR Prompts via Media API with Java

What You Will Build

• A Java utility that validates, uploads, and publishes IVR audio prompts to Genesys Cloud CX using atomic HTTP POST operations.
• The implementation uses the Genesys Cloud Media API endpoints for upload, prompt creation, and publication.
• The code is written in Java 17 using the standard java.net.http client, Jackson for JSON serialization, and SLF4J for structured audit logging.

Prerequisites

• OAuth2 Client Credentials flow with media:upload, media:read, and media:write scopes
• Genesys Cloud CX API v2 (/api/v2/media/*)
• Java 17 or later
• Dependencies: com.fasterxml.jackson.core:jackson-databind:2.15.2, org.slf4j:slf4j-api:2.0.9, org.bouncycastle:bcprov-jdk18on:1.77

Authentication Setup

Genesys Cloud requires OAuth2 bearer tokens for all Media API calls. The client credentials flow exchanges a client ID and secret for a short-lived access token. Implement token caching with a TTL buffer to avoid unnecessary token refreshes.

import java.io.IOException;
import java.net.URI;
import java.net.http.HttpClient;
import java.net.http.HttpRequest;
import java.net.http.HttpResponse;
import java.time.Instant;
import java.util.Map;
import java.util.concurrent.ConcurrentHashMap;

public class GenesysAuthManager {
    private final HttpClient httpClient;
    private final String baseUrl;
    private final String clientId;
    private final String clientSecret;
    private final Map<String, TokenCache> tokenStore = new ConcurrentHashMap<>();
    private static final long TTL_BUFFER_SECONDS = 120;

    public GenesysAuthManager(String baseUrl, String clientId, String clientSecret) {
        this.baseUrl = baseUrl.endsWith("/") ? baseUrl.substring(0, baseUrl.length() - 1) : baseUrl;
        this.clientId = clientId;
        this.clientSecret = clientSecret;
        this.httpClient = HttpClient.newBuilder()
                .connectTimeout(java.time.Duration.ofSeconds(10))
                .build();
    }

    public String getAccessToken() throws IOException, InterruptedException {
        String scope = "media:upload media:read media:write";
        TokenCache cached = tokenStore.get(scope);
        if (cached != null && Instant.now().isBefore(cached.expiry)) {
            return cached.token;
        }

        String payload = "grant_type=client_credentials&client_id=" + clientId 
                + "&client_secret=" + clientSecret + "&scope=" + scope;
        
        HttpRequest request = HttpRequest.newBuilder()
                .uri(URI.create(baseUrl + "/api/v2/oauth/token"))
                .header("Content-Type", "application/x-www-form-urlencoded")
                .POST(HttpRequest.BodyPublishers.ofString(payload))
                .build();

        HttpResponse<String> response = httpClient.send(request, HttpResponse.BodyHandlers.ofString());
        
        if (response.statusCode() != 200) {
            throw new IOException("OAuth token request failed with status " + response.statusCode() + ": " + response.body());
        }

        TokenData tokenData = parseTokenResponse(response.body());
        Instant expiry = Instant.now().plusSeconds(tokenData.expiresIn - TTL_BUFFER_SECONDS);
        tokenStore.put(scope, new TokenCache(tokenData.accessToken, expiry));
        return tokenData.accessToken;
    }

    private TokenData parseTokenResponse(String json) {
        try {
            com.fasterxml.jackson.databind.ObjectMapper mapper = new com.fasterxml.jackson.databind.ObjectMapper();
            return mapper.readValue(json, TokenData.class);
        } catch (Exception e) {
            throw new RuntimeException("Failed to parse OAuth response", e);
        }
    }

    private record TokenData(String accessToken, int expiresIn) {}
    private record TokenCache(String token, Instant expiry) {}
}

Implementation

Step 1: Constraint Validation and Audio Matrix Verification

Before transmitting media, validate file size, format headers, language tags, and audio silence levels. Genesys Cloud enforces a 200 MB maximum file size and specific codec matrices. Silent audio causes playback failures in IVR flows.

import java.io.File;
import java.io.IOException;
import java.nio.file.Files;
import java.util.Locale;
import java.util.regex.Pattern;

public class PromptValidator {
    private static final long MAX_FILE_SIZE_BYTES = 200L * 1024 * 1024;
    private static final Pattern LANGUAGE_TAG_PATTERN = Pattern.compile("^[a-z]{2}(-[A-Z]{2})?$");
    private static final double SILENCE_THRESHOLD_RMS = 0.005;

    public static ValidationResult validate(File audioFile, String languageTag) throws IOException {
        // Storage constraint check
        if (audioFile.length() > MAX_FILE_SIZE_BYTES) {
            return ValidationResult.fail("File exceeds 200 MB storage constraint");
        }

        // Language tag verification (ISO 639-1 with optional region)
        if (!LANGUAGE_TAG_PATTERN.matcher(languageTag).matches()) {
            return ValidationResult.fail("Invalid language tag format. Expected ISO 639-1 (e.g., en-US)");
        }

        // Format verification via magic bytes
        byte[] header = Files.readAllBytes(audioFile.toPath()).length > 44 
                ? Files.readNBytes(audioFile.toPath(), 44) 
                : Files.readAllBytes(audioFile.toPath());
        
        boolean isValidWav = header.length >= 44 && new String(header, 0, 4).equals("RIFF") 
                && new String(header, 8, 4).equals("WAVE");
        boolean isValidMp3 = header.length >= 3 && (header[0] & 0xFF) == 0xFF && (header[1] & 0xE0) == 0xE0;

        if (!isValidWav && !isValidMp3) {
            return ValidationResult.fail("Unsupported audio format. Genesys Cloud requires WAV or MP3");
        }

        // Silent audio checking via RMS calculation on raw byte sampling
        if (isSilentAudio(audioFile)) {
            return ValidationResult.fail("Audio file contains silence or near-silence. IVR playback will fail");
        }

        return ValidationResult.success();
    }

    private static boolean isSilentAudio(File file) throws IOException {
        byte[] buffer = Files.readAllBytes(file.toPath());
        long sum = 0;
        for (byte b : buffer) {
            sum += (b & 0xFF);
        }
        double rms = (double) sum / buffer.length;
        return rms < SILENCE_THRESHOLD_RMS * 255;
    }

    public record ValidationResult(boolean success, String message) {
        public static ValidationResult success() { return new ValidationResult(true, "Validation passed"); }
        public static ValidationResult fail(String msg) { return new ValidationResult(false, msg); }
    }
}

Step 2: Checksum Calculation and Atomic Upload POST

Calculate the SHA256 checksum locally before upload. Genesys Cloud uses this for integrity verification. Send the file via an atomic multipart POST to the upload endpoint. Implement exponential backoff for 429 rate limits.

import java.io.IOException;
import java.net.URI;
import java.net.http.HttpClient;
import java.net.http.HttpRequest;
import java.net.http.HttpResponse;
import java.nio.file.Files;
import java.nio.file.Path;
import java.security.MessageDigest;
import java.security.NoSuchAlgorithmException;
import java.util.concurrent.TimeUnit;

public class MediaUploader {
    private final HttpClient httpClient;
    private final GenesysAuthManager authManager;
    private final String baseUrl;

    public MediaUploader(HttpClient httpClient, GenesysAuthManager authManager, String baseUrl) {
        this.httpClient = httpClient;
        this.authManager = authManager;
        this.baseUrl = baseUrl;
    }

    public String uploadAudio(Path filePath, String uploadName) throws IOException, InterruptedException {
        String checksum = calculateSha256(filePath);
        String token = authManager.getAccessToken();
        
        HttpRequest request = HttpRequest.newBuilder()
                .uri(URI.create(baseUrl + "/api/v2/media/upload"))
                .header("Authorization", "Bearer " + token)
                .header("Content-Type", "multipart/form-data; boundary=GenesysBoundary")
                .header("X-Genesys-Checksum", checksum)
                .POST(buildMultipartBody(filePath, uploadName))
                .build();

        return executeWithRetry(request, "Upload");
    }

    private String executeWithRetry(HttpRequest request, String operation) throws IOException, InterruptedException {
        int retryCount = 0;
        int maxRetries = 5;
        
        while (true) {
            HttpResponse<String> response = httpClient.send(request, HttpResponse.BodyHandlers.ofString());
            int status = response.statusCode();

            if (status >= 200 && status < 300) {
                return response.body();
            }

            if (status == 429 && retryCount < maxRetries) {
                long delay = TimeUnit.SECONDS.toMillis(Math.min(1L << retryCount, 30));
                Thread.sleep(delay);
                retryCount++;
                continue;
            }

            throw new IOException(operation + " failed with status " + status + ": " + response.body());
        }
    }

    private HttpRequest.BodyPublisher buildMultipartBody(Path filePath, String uploadName) throws IOException {
        String boundary = "GenesysBoundary";
        byte[] fileBytes = Files.readAllBytes(filePath);
        
        StringBuilder body = new StringBuilder();
        body.append("--").append(boundary).append("\r\n");
        body.append("Content-Disposition: form-data; name=\"uploadName\"\r\n\r\n");
        body.append(uploadName).append("\r\n");
        body.append("--").append(boundary).append("\r\n");
        body.append("Content-Disposition: form-data; name=\"file\"; filename=\"").append(filePath.getFileName()).append("\"\r\n");
        body.append("Content-Type: audio/wav\r\n\r\n");
        
        byte[] headerBytes = body.toString().getBytes();
        byte[] footerBytes = ("\r\n--" + boundary + "--\r\n").getBytes();
        
        return HttpRequest.BodyPublishers.ofByteArrays(
                java.util.List.of(headerBytes, fileBytes, footerBytes)
        );
    }

    private String calculateSha256(Path path) throws IOException {
        try {
            MessageDigest digest = MessageDigest.getInstance("SHA-256");
            byte[] hash = digest.digest(Files.readAllBytes(path));
            StringBuilder hexString = new StringBuilder();
            for (byte b : hash) {
                hexString.append(String.format("%02x", b));
            }
            return hexString.toString();
        } catch (NoSuchAlgorithmException e) {
            throw new RuntimeException("SHA-256 algorithm not available", e);
        }
    }
}

Step 3: Prompt Reference Construction and Publish Directive

After upload, create the prompt metadata with a prompt-ref pointing to the uploaded file. Genesys Cloud requires a publish step to make the prompt available to IVR flows. Poll for processing completion before publishing to prevent index conflicts.

import com.fasterxml.jackson.databind.ObjectMapper;
import java.io.IOException;
import java.net.URI;
import java.net.http.HttpRequest;
import java.net.http.HttpResponse;
import java.time.Duration;
import java.util.Map;

public class PromptPublisher {
    private final HttpClient httpClient;
    private final GenesysAuthManager authManager;
    private final String baseUrl;
    private final ObjectMapper mapper = new ObjectMapper();

    public PromptPublisher(HttpClient httpClient, GenesysAuthManager authManager, String baseUrl) {
        this.httpClient = httpClient;
        this.authManager = authManager;
        this.baseUrl = baseUrl;
    }

    public String createPrompt(String uploadId, String promptName, String language) throws IOException, InterruptedException {
        String token = authManager.getAccessToken();
        Map<String, Object> payload = Map.of(
                "name", promptName,
                "description", "Auto-generated IVR prompt",
                "language", language,
                "fileName", promptName + ".wav",
                "promptRef", baseUrl + "/api/v2/media/upload/" + uploadId
        );

        HttpRequest request = HttpRequest.newBuilder()
                .uri(URI.create(baseUrl + "/api/v2/media/prompts"))
                .header("Authorization", "Bearer " + token)
                .header("Content-Type", "application/json")
                .POST(HttpRequest.BodyPublishers.ofString(mapper.writeValueAsString(payload)))
                .build();

        HttpResponse<String> response = httpClient.send(request, HttpResponse.BodyHandlers.ofString());
        if (response.statusCode() != 201) {
            throw new IOException("Prompt creation failed: " + response.body());
        }
        PromptResponse promptResp = mapper.readValue(response.body(), PromptResponse.class);
        return promptResp.id;
    }

    public void publishPrompt(String promptId) throws IOException, InterruptedException {
        waitForIndexing(promptId);
        
        String token = authManager.getAccessToken();
        HttpRequest request = HttpRequest.newBuilder()
                .uri(URI.create(baseUrl + "/api/v2/media/prompts/" + promptId + "/publish"))
                .header("Authorization", "Bearer " + token)
                .POST(HttpRequest.BodyPublishers.noBody())
                .build();

        HttpResponse<String> response = httpClient.send(request, HttpResponse.BodyHandlers.ofString());
        if (response.statusCode() == 409) {
            System.out.println("Prompt already published. Skipping duplicate publish directive.");
            return;
        }
        if (response.statusCode() != 200 && response.statusCode() != 202) {
            throw new IOException("Publish failed: " + response.body());
        }
    }

    private void waitForIndexing(String promptId) throws IOException, InterruptedException {
        String token = authManager.getAccessToken();
        long maxWaitMs = 30000;
        long start = System.currentTimeMillis();
        
        while (System.currentTimeMillis() - start < maxWaitMs) {
            HttpRequest statusReq = HttpRequest.newBuilder()
                    .uri(URI.create(baseUrl + "/api/v2/media/prompts/" + promptId))
                    .header("Authorization", "Bearer " + token)
                    .GET()
                    .build();
                    
            HttpResponse<String> resp = httpClient.send(statusReq, HttpResponse.BodyHandlers.ofString());
            PromptResponse data = mapper.readValue(resp.body(), PromptResponse.class);
            
            if ("published".equals(data.status) || "ready".equals(data.status)) {
                return;
            }
            Thread.sleep(Duration.ofSeconds(2).toMillis());
        }
        throw new IOException("Prompt indexing timeout");
    }

    public record PromptResponse(String id, String name, String status) {}
}

Step 4: CDN Synchronization, Latency Tracking, and Audit Logging

Synchronize deployment events with an external CDN by triggering a webhook after successful publication. Track latency and success rates for efficiency monitoring. Generate structured audit logs for media governance.

import java.io.IOException;
import java.net.URI;
import java.net.http.HttpRequest;
import java.net.http.HttpResponse;
import java.time.Instant;
import java.util.concurrent.atomic.AtomicInteger;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

public class DeployOrchestrator {
    private static final Logger auditLogger = LoggerFactory.getLogger(DeployOrchestrator.class);
    private final HttpClient httpClient;
    private final String cdnWebhookUrl;
    private final AtomicInteger successCount = new AtomicInteger(0);
    private final AtomicInteger failureCount = new AtomicInteger(0);

    public DeployOrchestrator(HttpClient httpClient, String cdnWebhookUrl) {
        this.httpClient = httpClient;
        this.cdnWebhookUrl = cdnWebhookUrl;
    }

    public void triggerCdnSync(String promptId, String promptName) throws IOException, InterruptedException {
        Map<String, String> webhookPayload = Map.of(
                "promptId", promptId,
                "promptName", promptName,
                "timestamp", Instant.now().toString(),
                "action", "PUBLISH_COMPLETE"
        );

        HttpRequest webhookReq = HttpRequest.newBuilder()
                .uri(URI.create(cdnWebhookUrl))
                .header("Content-Type", "application/json")
                .POST(HttpRequest.BodyPublishers.ofString(new com.fasterxml.jackson.databind.ObjectMapper().writeValueAsString(webhookPayload)))
                .build();

        HttpResponse<String> resp = httpClient.send(webhookReq, HttpResponse.BodyHandlers.ofString());
        if (resp.statusCode() >= 200 && resp.statusCode() < 300) {
            auditLogger.info("CDN sync triggered successfully for prompt {}", promptId);
        } else {
            auditLogger.warn("CDN sync failed with status {} for prompt {}", resp.statusCode(), promptId);
        }
    }

    public void recordMetrics(String promptId, long latencyMs, boolean success) {
        if (success) {
            successCount.incrementAndGet();
            auditLogger.info("AUDIT|DEPLOY_SUCCESS|promptId={}|latencyMs={}|successRate={}", 
                    promptId, latencyMs, calculateSuccessRate());
        } else {
            failureCount.incrementAndGet();
            auditLogger.error("AUDIT|DEPLOY_FAILURE|promptId={}|latencyMs={}|successRate={}", 
                    promptId, latencyMs, calculateSuccessRate());
        }
    }

    public double calculateSuccessRate() {
        int total = successCount.get() + failureCount.get();
        return total == 0 ? 0.0 : (double) successCount.get() / total;
    }
}

Complete Working Example

The following class combines validation, upload, publication, CDN sync, and metrics tracking into a single executable deployer. Replace the placeholder credentials and file paths before execution.

import java.io.File;
import java.io.IOException;
import java.net.http.HttpClient;
import java.nio.file.Path;
import java.time.Instant;
import java.util.concurrent.TimeUnit;

public class GenesysPromptDeployer {
    private final GenesysAuthManager authManager;
    private final MediaUploader uploader;
    private final PromptPublisher publisher;
    private final DeployOrchestrator orchestrator;
    private final HttpClient httpClient;

    public GenesysPromptDeployer(String baseUrl, String clientId, String clientSecret, String cdnWebhookUrl) {
        this.httpClient = HttpClient.newBuilder()
                .followRedirects(HttpClient.Redirect.NORMAL)
                .connectTimeout(java.time.Duration.ofSeconds(15))
                .build();
        
        this.authManager = new GenesysAuthManager(baseUrl, clientId, clientSecret);
        this.uploader = new MediaUploader(httpClient, authManager, baseUrl);
        this.publisher = new PromptPublisher(httpClient, authManager, baseUrl);
        this.orchestrator = new DeployOrchestrator(httpClient, cdnWebhookUrl);
    }

    public void deployPrompt(File audioFile, String promptName, String languageTag) {
        long startNanos = System.nanoTime();
        boolean success = false;
        String promptId = null;

        try {
            // Step 1: Validate constraints and audio matrix
            PromptValidator.ValidationResult validation = PromptValidator.validate(audioFile, languageTag);
            if (!validation.success()) {
                throw new IllegalArgumentException(validation.message());
            }

            // Step 2: Atomic upload with checksum
            Path filePath = audioFile.toPath();
            String uploadId = uploader.uploadAudio(filePath, promptName + "_" + Instant.now().toEpochMilli());
            System.out.println("Upload initiated. ID: " + extractId(uploadId));

            // Step 3: Create prompt reference and publish
            promptId = publisher.createPrompt(extractId(uploadId), promptName, languageTag);
            System.out.println("Prompt created. ID: " + promptId);
            
            publisher.publishPrompt(promptId);
            System.out.println("Prompt published successfully.");

            // Step 4: CDN sync and metrics
            orchestrator.triggerCdnSync(promptId, promptName);
            success = true;

        } catch (Exception e) {
            System.err.println("Deployment failed: " + e.getMessage());
            e.printStackTrace();
        } finally {
            long latencyMs = TimeUnit.NANOSECONDS.toMillis(System.nanoTime() - startNanos);
            orchestrator.recordMetrics(promptId != null ? promptId : "UNKNOWN", latencyMs, success);
        }
    }

    private String extractId(String jsonOrId) {
        if (jsonOrId.contains("\"id\":\"")) {
            String[] parts = jsonOrId.split("\"id\":\"");
            if (parts.length > 1) {
                return parts[1].split("\"")[0];
            }
        }
        return jsonOrId;
    }

    public static void main(String[] args) {
        String baseUrl = "https://api.mypurecloud.com";
        String clientId = "YOUR_CLIENT_ID";
        String clientSecret = "YOUR_CLIENT_SECRET";
        String cdnWebhook = "https://your-cdn-sync-endpoint.example.com/webhook";
        
        GenesysPromptDeployer deployer = new GenesysPromptDeployer(baseUrl, clientId, clientSecret, cdnWebhook);
        deployer.deployPrompt(new File("/path/to/ivr_prompt.wav"), "Welcome_Prompt", "en-US");
    }
}

Common Errors & Debugging

Error: 401 Unauthorized

• Cause: Expired or invalid OAuth token. The client credentials flow did not complete successfully, or the token cache returned a stale token.
• Fix: Verify client ID and secret permissions in the Genesys Cloud admin console. Ensure the media:upload scope is requested. Clear the token cache and force a refresh.
• Code Fix: The GenesysAuthManager implements a 120-second TTL buffer. If 401 persists, increase the buffer or add explicit token invalidation on 401 responses.

Error: 400 Bad Request (Format or Language Tag)

• Cause: The audio file header does not match WAV or MP3 signatures, or the language tag does not follow ISO 639-1 format.
• Fix: Validate the file using a media inspection tool before upload. Ensure the language string matches en-US, es-MX, etc. Genesys Cloud rejects malformed BCP 47 tags.
• Code Fix: The PromptValidator checks magic bytes and regex patterns. Add explicit logging of the detected format to trace mismatches.

Error: 403 Forbidden

• Cause: Missing media:write or media:upload OAuth scopes on the service account.
• Fix: Navigate to Genesys Cloud Administration > Security > Service Accounts. Attach the required media scopes to the OAuth client credentials.
• Code Fix: Update the scope string in GenesysAuthManager to explicitly include media:write.

Error: 409 Conflict (Publish Directive)

• Cause: Attempting to publish a prompt that is already in a published state. Genesys Cloud prevents duplicate publish operations on the same resource version.
• Fix: Check the prompt status before issuing the publish POST. The PromptPublisher.publishPrompt method handles 409 gracefully by logging and skipping.
• Code Fix: Implement idempotency keys if running parallel deployments against the same prompt name.

Error: 413 Payload Too Large

• Cause: File exceeds the 200 MB Genesys Cloud storage constraint.
• Fix: Split long audio files or apply lossless compression before upload. The validator enforces this limit pre-flight.
• Code Fix: Adjust MAX_FILE_SIZE_BYTES in PromptValidator if your org has an elevated limit via support ticket.

Official References

• Genesys Cloud Media API Documentation
• OAuth2 Client Credentials Flow
• Java HttpClient Documentation
• Genesys Cloud Media Upload Endpoints
• Genesys Cloud Prompt Management