debezium/dbz

Unify include/exclude property validation

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#2,292 opened on Jul 25, 2026

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Description

Across the code base there are places where we validate include/exclude for database, schema, table, SQL Server internal.capture.instance, Oracle usernames and client ids, PostgreSQL logical decoding message prefix, and MongoDB collection and databases.

I propose we introduce a ConnectorConfigValidationHelper in debezium-common-connector in io.debezium.config, where we'll pull the existing private static int validateExcludeList method in RelationalDatabaseConnectorConfig to this class. From here, we then unify all the call sites to use this helper method.

As additional follow-ups or as part of this, we could evaluate if there are other validation methods we can unify.

Contributor guide

Research direction
Locate the existing private static method validateExcludeList in RelationalDatabaseConnectorConfig and identify all places where include/exclude validation is performed for different connectors. Then propose how to move this into a common helper class in Debezium's common connector module.
Tech stack
java
Domain
backend
Issue type
Refactor
DifficultyEstimated implementation difficulty for a new contributor, from 1 for very small changes to 5 for expert-level work.
2
Estimated timeA rough time range for an experienced contributor to investigate, implement, test, and prepare a pull request.
Half day
Activity statusHow available the issue appears right now: fresh, active, stale, blocked, or waiting on maintainer input.
Fresh
ClarityHow clearly the issue explains the expected change, acceptance criteria, and next step.
Clear
Prerequisites
GitJava
Newbie friendlinessA 1-100 score estimating how approachable this issue is for first-time contributors.
65