Luca Sacchi Ricciardi 3c406ef405 feat: create n8n workflow for secure log ingestion ...

Implement LogWhisperer_Ingest workflow for Sprint 2 Feature 2:

Workflow Components:
- Webhook trigger: POST /webhook/logwhisperer/ingest
- HMAC-SHA256 validation with timing-safe comparison
- Anti-replay protection (5min timestamp window)
- Data validation: UUID client_id, severity levels, non-empty logs
- PostgreSQL storage with logs table auto-creation
- Conditional routing for critical severity logs

Security Features:
- HMAC signature verification (X-LogWhisperer-Signature header)
- Timestamp validation preventing replay attacks
- Input sanitization before DB insert
- Environment variable LOGWHISPERER_SECRET for shared secret

Documentation:
- workflows/logwhisperer_ingest.json: Export JSON workflow
- workflows/README.md: Installation and usage guide
- workflows/INTEGRATION.md: Bash script integration guide
- workflows/REPORT.md: Implementation report
- workflows/test_workflow.sh: Automated test suite

Metodo Sacchi Applied:
- Safety First: HMAC validation before any processing
- Little Often: Modular nodes, each with single responsibility
- Double Check: Test suite validates all security requirements

Next Steps:
- Configure LOGWHISPERER_SECRET in n8n environment
- Import workflow to n8n instance
- Test end-to-end with secure_logwhisperer.sh

2026-04-02 19:01:40 +02:00

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