feat: implement webhook delivery service with retry and signature verification (closes #111)#209
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elizabetheonoja-art merged 1 commit intoJul 21, 2026
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…ification Closes Utility-Protocol#111 - Restructure src/webhooks.rs into src/webhooks/ module: - mod.rs: shared types, RetryPolicy with configurable delays, WebhookTransport trait - signer.rs: HMAC-SHA256 signing and verification functions - dispatcher.rs: WebhookDeliveryService with 10s timeout, per-endpoint rate limiting (100/min), and exponential backoff retry (10s, 30s, 2min, 10min, 30min) - dead_letter.rs: DeadLetterQueue trait + PostgresDlq implementation - Retry policy: fixed delays per spec (10s, 30s, 2min, 10min, 30min), max 5 retries - Permanent failures (non-retryable 4xx) returned immediately without DLQ - Transient failures retried with backoff, enqueued to DLQ after exhaustion - Rate limiting: 100 webhooks/min per endpoint via fixed-window counter - 10-second timeout per delivery attempt - Add webhook management API endpoints: - GET/POST /api/v1/webhooks/endpoints - DELETE /api/v1/webhooks/endpoints/:id - POST /api/v1/webhooks/endpoints/:id/test - GET /api/v1/webhooks/dead-letter - POST /api/v1/webhooks/dead-letter/:id/retry - Add DB migration for webhook_endpoints and dead_letter_webhooks tables - Add Prometheus metrics for webhook deliveries, latency, and retries - Update webhook tests to use new module structure and mock DLQ
elizabetheonoja-art
merged commit Jul 21, 2026
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Summary
Implements Issue #111 - Webhook Delivery Service with Retry and Signature Verification.
Changes
closes Webhook Delivery Service with Retry and Signature Verification #111