Implement comprehensive AFTN/ICAO protocol compliance validation with configurable enforcement, enabling early detection of malformed telegrams and reducing downstream processing errors. Add real-time serial reader health monitoring to automatically detect message flow interruptions and sequence gaps, ensuring operational visibility into the telegram ingestion pipeline.
Key enhancements:
- AFTN validator validates priority indicators (FF/GG/QU/DD/SS/KK), ICAO addresses (4-char alphanumeric), and datetime formats (DDHHMM) with detailed error categorization
- Invalid telegrams automatically routed to DLQ with full context for offline review and correction
- Serial reader health monitoring tracks message gaps and sequence numbers to detect stalled readers or missing messages within configurable threshold (default: 2 minutes)
- Four new Prometheus metrics expose validation errors by type, message gaps, sequence gaps, and health status for operational alerting
- Pre-configured Prometheus alert rules for critical conditions (stalled reader, high error rates, consumer lag)
- Grafana dashboard provides real-time visibility into AFTN compliance and serial reader health
- Validation disabled by default for safe rollout with zero breaking changes to existing functionality
Implementation maintains clean architecture with validator in adapter layer, extends processor and consumer with health tracking, and ensures thread-safe concurrent access to tracking state. All changes fully tested with 48 validator tests, 10 processor tests, and 21 consumer tests passing.
🤖 Generated with [Claude Code](https://claude.com/claude-code)
Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>
The code changes in `config.go` update the CNL pattern to correctly match CNL messages. This update ensures accurate extraction of data from CNL messages and improves the overall functionality of the code.
Update go.mod dependencies to the latest stable versions. This includes updating github.com/nats-io/nats.go to v1.36.0, github.com/onsi/ginkgo/v2 to v2.19.1, github.com/onsi/gomega to v1.34.0, go.uber.org/zap to v1.27.0, and golang.org/x/oauth2 to v0.21.0. Also update github.com/go-logr/logr to v1.4.2 and github.com/klauspost/compress to v1.17.9. These updates ensure that the project is using the most recent dependencies, improving stability and compatibility.
This commit updates the go.mod file to include the latest versions of the following dependencies:
- github.com/Khan/genqlient v0.7.0
- github.com/google/uuid v1.6.0
These updates ensure that the project is using the most recent and stable versions of the dependencies, improving the overall reliability and functionality of the code.
