Implements 100% exactly-once semantics for CDC events from 1.0 databases
(identity-service, planting-service, referral-service) to contribution-service.
Key changes:
- Add ProcessedCdcEvent model with (sourceTopic, offset) unique constraint
- Add withIdempotency() wrapper using Serializable transaction isolation
- Add registerTransactionalHandler() for handlers requiring idempotency
- Modify CDC handlers to accept external transaction client
- All database operations now use the passed transaction client
This ensures that:
1. Each CDC event is processed exactly once
2. Idempotency record and business logic are in the same transaction
3. Any failure causes complete rollback
Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
Remove the UPDATE statement that referenced non-existent columns.
The contribution_accounts table uses different field structure.
Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
TEAM_BONUS should only be given to the adopter themselves, not to their
uplines. This migration deletes all TEAM_BONUS records where
account_sequence != source_account_sequence.
Also updates contribution_accounts totals in contribution-service.
Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
将增量migration改为完整的初始化migration，包含所有表的CREATE TABLE语句。
原migration使用ALTER TABLE假设表已存在，但这是服务的第一个migration文件。
Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
hailin