postgres_webhook

Mammoth Sample Webhook Delivery Demo

This demo exercises the current Mammoth delivery path. The sample JSON is deserialized into an exact CDC::Core::ChangeEvent before delivery:

sample CDC-shaped PostgreSQL event
      ↓
Mammoth delivery runtime
      ↓
Webhook receiver
      ↓
SQLite checkpoint + delivered-envelope ledger

This is not a live logical-replication demo. It intentionally uses deliver-sample so webhook delivery, checkpoint persistence, and the delivery pipeline can be verified without requiring PostgreSQL replication to be active. Use ../live_postgres_webhook for the full PostgreSQL → Mammoth → Webhook shape.

Run

docker compose up --build

Expected receiver output:

received demo-order-1 insert orders

Mammoth stores operational state in the .sqlite3/mammoth.db path inside the mammoth_data volume. The configured operational-state adapter owns both the checkpoint store and delivered-envelope ledger. DeliveryWorker records the successful ledger entry; the shared progress coordinator advances the checkpoint after that durable outcome.