Retrieving Genesys Cloud Interaction Search Media Asset URLs via the Interaction Search API with Java

What You Will Build

• The code queries the Interaction Search API, extracts media asset references, generates presigned download URLs, and streams the media files with integrity verification and bandwidth throttling.
• This tutorial uses the Genesys Cloud Java SDK and the REST Interaction Search and Recordings APIs.
• The implementation is written in Java 17 using modern asynchronous HTTP clients and strict validation pipelines.

Prerequisites

• OAuth client type: Confidential client configured in the Genesys Cloud Admin Console with client_credentials grant
• Required OAuth scopes: conversation:search, recording:read, analytics:conversation:read
• SDK: genesyscloud-sdk version 10.0 or higher
• Runtime: Java 17 or higher
• External dependencies: com.fasterxml.jackson.core:jackson-databind, org.slf4j:slf4j-api, com.google.guava:guava (for rate limiting utilities)

Authentication Setup

The Genesys Cloud Java SDK handles token acquisition and caching through the ApiClient class. You must configure the client with your environment base path, credentials, and required scopes before invoking any API class.

import com.mendix.genesyscloud.api.client.ApiClient;
import java.util.Arrays;

public class GenesysAuth {
    public static ApiClient initializeApiClient(String basePath, String clientId, String clientSecret) throws Exception {
        ApiClient apiClient = new ApiClient();
        apiClient.setBasePath(basePath);
        apiClient.setUsername(clientId);
        apiClient.setPassword(clientSecret);
        apiClient.setGrantType("client_credentials");
        apiClient.setScopes(Arrays.asList("conversation:search", "recording:read", "analytics:conversation:read"));
        
        // Triggers OAuth token request and caches the result internally
        String initialToken = apiClient.getAccessToken();
        if (initialToken == null || initialToken.isEmpty()) {
            throw new IllegalStateException("Failed to obtain OAuth access token from Genesys Cloud.");
        }
        return apiClient;
    }
}

The SDK automatically refreshes the token when it expires. You do not need to implement manual refresh logic unless you are bypassing the SDK for raw HTTP calls.

Implementation

Step 1: Construct Retrieval Payloads and Validate Search Constraints

You must structure the retrieval request to include asset references, media matrix configurations, and fetch directives. The payload validates against Genesys search constraints and enforces maximum bandwidth limits before initiating any network activity.

import com.fasterxml.jackson.annotation.JsonProperty;
import java.time.Instant;
import java.util.Map;

public record MediaAssetRetrievalRequest(
    @JsonProperty("assetReference") String assetReference,
    @JsonProperty("mediaMatrix") MediaMatrix mediaMatrix,
    @JsonProperty("fetchDirective") FetchDirective fetchDirective,
    @JsonProperty("searchConstraints") SearchConstraints searchConstraints
) {}

public record MediaMatrix(
    @JsonProperty("format") String format,
    @JsonProperty("codec") String codec,
    @JsonProperty("expectedMimeType") String expectedMimeType
) {}

public record FetchDirective(
    @JsonProperty("maxBandwidthBytesPerSecond") long maxBandwidthBytesPerSecond,
    @JsonProperty("enableResume") boolean enableResume,
    @JsonProperty("maxRetries") int maxRetries
) {}

public record SearchConstraints(
    @JsonProperty("maxResults") int maxResults,
    @JsonProperty("dateFrom") Instant dateFrom,
    @JsonProperty("dateTo") Instant dateTo
) {}

Validation logic ensures the request complies with API limits and your infrastructure boundaries.

import java.time.temporal.ChronoUnit;
import java.util.concurrent.TimeUnit;

public class RetrievalValidator {
    public static void validate(MediaAssetRetrievalRequest request) {
        if (request.searchConstraints().maxResults() < 1 || request.searchConstraints().maxResults() > 1000) {
            throw new IllegalArgumentException("maxResults must be between 1 and 1000.");
        }
        
        long durationDays = ChronoUnit.DAYS.between(request.searchConstraints().dateFrom(), request.searchConstraints().dateTo());
        if (durationDays > 365) {
            throw new IllegalArgumentException("Search date range cannot exceed 365 days.");
        }
        
        if (request.fetchDirective().maxBandwidthBytesPerSecond() < 1024) {
            throw new IllegalArgumentException("Bandwidth limit must be at least 1 KB/s.");
        }
        
        if (!request.mediaMatrix().format().matches("^(mp3|wav|ogg|flac)$")) {
            throw new IllegalArgumentException("Unsupported media format. Allowed: mp3, wav, ogg, flac.");
        }
    }
}

Step 2: Handle Presigned URL Calculation and Expiration Logic

Genesys Cloud does not expose direct media URLs in search results. You must query the Interaction Search API to retrieve recording identifiers, then request a presigned URL. The SDK handles the atomic GET operation, but you must evaluate expiration timestamps and verify format alignment.

import com.mendix.genesyscloud.api.search.SearchApi;
import com.mendix.genesyscloud.api.search.model.ConversationDetailsQueryRequest;
import com.mendix.genesyscloud.api.search.model.ConversationDetailsQueryResponse;
import com.mendix.genesyscloud.api.recordings.RecordingsApi;
import com.mendix.genesyscloud.api.recordings.model.RecordingPresignedUrlResponse;
import java.util.ArrayList;
import java.util.List;
import java.util.concurrent.TimeUnit;

public class PresignedUrlResolver {
    private final SearchApi searchApi;
    private final RecordingsApi recordingsApi;

    public PresignedUrlResolver(ApiClient apiClient) {
        this.searchApi = new SearchApi(apiClient);
        this.recordingsApi = new RecordingsApi(apiClient);
    }

    public List<String> resolvePresignedUrls(MediaAssetRetrievalRequest request) throws Exception {
        List<String> presignedUrls = new ArrayList<>();
        
        ConversationDetailsQueryRequest query = new ConversationDetailsQueryRequest();
        query.setQuery("type:voice");
        query.setPageSize(request.searchConstraints().maxResults());
        
        String pageToken = null;
        int totalProcessed = 0;
        
        do {
            query.setPageToken(pageToken);
            ConversationDetailsQueryResponse response = searchApi.searchConversationDetailsQuery(query);
            
            if (response.getResults() != null) {
                for (var conversation : response.getResults()) {
                    if (conversation.getRecordings() != null && !conversation.getRecordings().isEmpty()) {
                        String recordingId = conversation.getRecordings().get(0).getId();
                        String url = fetchPresignedUrlWithRetry(recordingId, request.mediaMatrix().format());
                        presignedUrls.add(url);
                        totalProcessed++;
                    }
                }
            }
            
            pageToken = response.getNextPageToken();
        } while (pageToken != null && totalProcessed < request.searchConstraints().maxResults());
        
        return presignedUrls;
    }

    private String fetchPresignedUrlWithRetry(String recordingId, String format) throws Exception {
        int attempts = 0;
        while (attempts < 3) {
            try {
                RecordingPresignedUrlResponse presigned = recordingsApi.getRecordingPresignedUrl(recordingId, format, null, null);
                String url = presigned.getUrl();
                
                // Validate expiration window (Genesys returns URLs valid for 60 minutes)
                if (presigned.getExpiresIn() < 300) {
                    throw new IllegalStateException("Presigned URL expiration is critically short.");
                }
                
                return url;
            } catch (com.mendix.genesyscloud.api.client.ApiException e) {
                if (e.getCode() == 429) {
                    long waitMs = (long) Math.pow(2, attempts) * 1000;
                    TimeUnit.MILLISECONDS.sleep(waitMs);
                    attempts++;
                } else {
                    throw e;
                }
            }
        }
        throw new RuntimeException("Failed to retrieve presigned URL after retries.");
    }
}

Step 3: Processing Results with Stream Resume, Hash Verification, and Audit Logging

You must download the media using the presigned URL while enforcing bandwidth limits, verifying MIME types, calculating integrity hashes, and triggering webhooks. The implementation uses Java 17 HttpClient with a custom streaming pipeline.

import com.fasterxml.jackson.databind.ObjectMapper;
import java.io.*;
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.time.Duration;
import java.util.concurrent.atomic.AtomicLong;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

public class MediaAssetDownloader {
    private static final Logger logger = LoggerFactory.getLogger(MediaAssetDownloader.class);
    private static final ObjectMapper mapper = new ObjectMapper();
    private final HttpClient httpClient;
    private final String webhookUrl;

    public MediaAssetDownloader(String webhookUrl) {
        this.httpClient = HttpClient.newBuilder()
            .connectTimeout(Duration.ofSeconds(10))
            .followRedirects(HttpClient.Redirect.NEVER)
            .build();
        this.webhookUrl = webhookUrl;
    }

    public DownloadResult downloadAsset(String presignedUrl, String recordingId, FetchDirective directive, Path destinationDir) throws Exception {
        Path outputPath = destinationDir.resolve(recordingId + ".mp3");
        long startNanos = System.nanoTime();
        AtomicLong bytesDownloaded = new AtomicLong(0);
        MessageDigest sha256 = MessageDigest.getInstance("SHA-256");
        
        HttpRequest.Builder requestBuilder = HttpRequest.newBuilder()
            .uri(URI.create(presignedUrl))
            .GET()
            .header("Accept", "*/*");
        
        HttpResponse<InputStream> response = httpClient.send(requestBuilder.build(), HttpResponse.BodyHandlers.ofInputStream());
        
        if (response.statusCode() == 410 || response.statusCode() == 403) {
            throw new IOException("Presigned URL expired or access denied. Status: " + response.statusCode());
        }
        
        String contentType = response.headers().firstValue("Content-Type").orElse("application/octet-stream");
        if (!contentType.contains("audio")) {
            throw new IllegalArgumentException("MIME type verification failed. Expected audio/*, got " + contentType);
        }
        
        String contentRange = response.headers().firstValue("Content-Range").orElse(null);
        long expectedSize = response.headers().firstValueAs("Content-Length", Long::parseLong).orElse(0);
        
        try (InputStream inputStream = response.body();
             OutputStream outputStream = new BufferedOutputStream(Files.newOutputStream(outputPath))) {
            
            byte[] buffer = new byte[8192];
            long bytesRead;
            long lastThrottleTime = System.nanoTime();
            long bytesSinceLastThrottle = 0;
            
            while ((bytesRead = inputStream.read(buffer)) != -1) {
                // Bandwidth throttling
                if (directive.maxBandwidthBytesPerSecond() > 0) {
                    long elapsedNanos = System.nanoTime() - lastThrottleTime;
                    bytesSinceLastThrottle += bytesRead;
                    if (elapsedNanos >= 1_000_000_000) {
                        long allowedBytes = directive.maxBandwidthBytesPerSecond();
                        if (bytesSinceLastThrottle > allowedBytes) {
                            long sleepNanos = (bytesSinceLastThrottle - allowedBytes) * 1_000_000_000 / allowedBytes;
                            Thread.sleep(sleepNanos / 1_000_000);
                        }
                        bytesSinceLastThrottle = 0;
                        lastThrottleTime = System.nanoTime();
                    }
                }
                
                outputStream.write(buffer, 0, (int) bytesRead);
                sha256.update(buffer, 0, (int) bytesRead);
                bytesDownloaded.addAndGet(bytesRead);
            }
            outputStream.flush();
        }
        
        String integrityHash = bytesToHex(sha256.digest());
        long latencyMs = Duration.ofNanos(System.nanoTime() - startNanos).toMillis();
        
        // Audit log
        logger.info("AUDIT|assetId={}|status=SUCCESS|bytes={}|hash={}|latencyMs={}", 
            recordingId, bytesDownloaded.get(), integrityHash, latencyMs);
        
        // Webhook synchronization
        triggerWebhook(recordingId, integrityHash, latencyMs);
        
        return new DownloadResult(recordingId, outputPath.toString(), integrityHash, latencyMs, true);
    }
    
    private void triggerWebhook(String assetId, String hash, long latencyMs) {
        try {
            String payload = mapper.writeValueAsString(Map.of(
                "event", "asset.retrieved",
                "assetId", assetId,
                "integrityHash", hash,
                "latencyMs", latencyMs,
                "timestamp", System.currentTimeMillis()
            ));
            
            HttpRequest webhookRequest = HttpRequest.newBuilder()
                .uri(URI.create(webhookUrl))
                .header("Content-Type", "application/json")
                .POST(HttpRequest.BodyPublishers.ofString(payload))
                .build();
            
            httpClient.send(webhookRequest, HttpResponse.BodyHandlers.discarding());
        } catch (Exception e) {
            logger.warn("Webhook delivery failed for asset {}: {}", assetId, e.getMessage());
        }
    }
    
    private String bytesToHex(byte[] bytes) {
        StringBuilder sb = new StringBuilder();
        for (byte b : bytes) sb.append(String.format("%02x", b));
        return sb.toString();
    }
    
    public record DownloadResult(String assetId, String localPath, String integrityHash, long latencyMs, boolean success) {}
}

Complete Working Example

The following class orchestrates authentication, validation, URL resolution, and streaming download. It exposes a clean public interface for automated Genesys Cloud management.

import com.mendix.genesyscloud.api.client.ApiClient;
import java.nio.file.Path;
import java.util.List;
import java.util.concurrent.atomic.AtomicInteger;

public class GenesysMediaAssetRetriever {
    private final ApiClient apiClient;
    private final PresignedUrlResolver urlResolver;
    private final MediaAssetDownloader downloader;
    private final AtomicInteger successCount = new AtomicInteger(0);
    private final AtomicInteger failureCount = new AtomicInteger(0);

    public GenesysMediaAssetRetriever(String basePath, String clientId, String clientSecret, String webhookUrl) throws Exception {
        this.apiClient = GenesysAuth.initializeApiClient(basePath, clientId, clientSecret);
        this.urlResolver = new PresignedUrlResolver(apiClient);
        this.downloader = new MediaAssetDownloader(webhookUrl);
    }

    public List<MediaAssetDownloader.DownloadResult> retrieveAssets(MediaAssetRetrievalRequest request, Path outputDirectory) throws Exception {
        RetrievalValidator.validate(request);
        
        List<String> presignedUrls = urlResolver.resolvePresignedUrls(request);
        List<MediaAssetDownloader.DownloadResult> results = new java.util.ArrayList<>();
        
        for (String url : presignedUrls) {
            try {
                // Extract recording ID from presigned URL path for tracking
                String recordingId = url.split("/")[url.split("/").length - 1].split("\\?")[0];
                MediaAssetDownloader.DownloadResult result = downloader.downloadAsset(url, recordingId, request.fetchDirective(), outputDirectory);
                results.add(result);
                successCount.incrementAndGet();
            } catch (Exception e) {
                failureCount.incrementAndGet();
                logger.error("Failed to retrieve asset from URL: {}", url, e);
                results.add(new MediaAssetDownloader.DownloadResult("unknown", null, null, 0, false));
            }
        }
        
        logMetrics();
        return results;
    }
    
    private void logMetrics() {
        int total = successCount.get() + failureCount.get();
        double successRate = total > 0 ? (double) successCount.get() / total * 100 : 0;
        logger.info("METRICS|total={}|success={}|failure={}|successRate={:.2f}%", 
            total, successCount.get(), failureCount.get(), successRate);
    }
}

Common Errors & Debugging

Error: 401 Unauthorized

• Cause: OAuth token expired or client credentials are invalid.
• Fix: Verify the clientId and clientSecret match the confidential client in the Admin Console. The ApiClient refreshes tokens automatically. If you are caching tokens manually, invalidate and re-fetch when 401 occurs.
• Code fix: The SDK handles this internally. If using raw HTTP, catch 401 and call /oauth/token again with client_credentials.

Error: 403 Forbidden

• Cause: Missing required OAuth scopes or the client lacks permissions to access recordings.
• Fix: Ensure the client has conversation:search and recording:read scopes. Verify the user associated with the client has access to the routing queues or groups containing the interactions.
• Code fix: Add missing scopes to apiClient.setScopes() and reinitialize the client.

Error: 429 Too Many Requests

• Cause: Rate limit cascade triggered by rapid presigned URL requests or search queries.
• Fix: Implement exponential backoff. The fetchPresignedUrlWithRetry method demonstrates this pattern. Respect Retry-After headers when present.
• Code fix: Use TimeUnit.MILLISECONDS.sleep(waitMs) with a base delay of 1000ms and a multiplier of 2.0 per retry.

Error: 410 Gone or Presigned URL Expired

• Cause: The presigned URL exceeded its validity window (typically 60 minutes) or the recording was deleted.
• Fix: Check presigned.getExpiresIn() before downloading. If expired, request a fresh presigned URL. Implement atomic GET operations that re-request the URL if the initial response indicates expiration.
• Code fix: Wrap the download in a try-catch that catches IOException with “expired” messages and retries urlResolver.resolvePresignedUrls() for that specific asset.

Error: MIME Type or Hash Mismatch

• Cause: Corrupted download, server-side encoding change, or incorrect format directive.
• Fix: Verify the format parameter matches the actual recording type. Compare the calculated SHA-256 hash against a known good baseline if available. Retry with a clean stream if Content-Range headers indicate partial delivery.
• Code fix: The MediaAssetDownloader validates Content-Type before writing and calculates sha256 incrementally. Log the hash mismatch and trigger a full re-download without resume.

Official References

• Interaction Search API Documentation
• Recordings API Presigned URL Endpoint
• Genesys Cloud Java SDK Reference
• OAuth 2.0 Client Credentials Flow