Principle:Risingwavelabs Risingwave CDC Source Validation
| Knowledge Sources | |
|---|---|
| Domains | CDC, Connectors, Validation |
| Last Updated | 2026-02-09 07:00 GMT |
Overview
Pre-flight validation framework for CDC sources, verifying database configuration, user privileges, and table properties before starting replication.
Description
CDC Source Validation implements a template method pattern for validating upstream database readiness before starting CDC replication. The framework defines four validation stages: database configuration validation (connectivity, version compatibility, replication settings), user privilege validation (replication permissions, table access), table property validation (primary keys, schema compatibility), and CDC source job detection. Each database type (MySQL, PostgreSQL, MongoDB, SQL Server) provides concrete implementations of these validation steps. The validation runs during CREATE TABLE/SOURCE operations to fail fast with actionable error messages rather than encountering replication errors at runtime.
Usage
Apply this principle when adding validation for new CDC source types, extending validation checks for existing sources, or improving error messages for CDC configuration issues.