- Added SystemHealthChecker to collect CPU, memory, disk, and load average metrics.
- Implemented methods to retrieve system information from /proc filesystem.
- Introduced a new method to collect metrics and return a SystemMetrics struct.
- Added tests for metric collection and parsing functions.
feat: Enhance agent runtime with state management and health monitoring
- Created AgentState struct to manage agent state with RwLock for concurrency.
- Refactored agent start logic to initialize cache and start health monitoring.
- Implemented connection loop with reconnection logic and health report handling.
- Added config update handling with nginx controller integration.
feat: Expand master client functionality for bidirectional streaming
- Updated MasterClient to support bidirectional streaming for health reports.
- Implemented registration logic with the master server.
- Added methods for sending messages and managing connection state.
feat: Improve nginx configuration management and rendering
- Enhanced ConfigManager for atomic symlink swaps and configuration validation.
- Implemented ConfigRenderer using Handlebars for dynamic nginx configuration generation.
- Added methods for applying, rolling back, and cleaning up configurations.
- Introduced tests for configuration rendering and validation.
feat: Implement nginx process control with lifecycle management
- Added methods to start, stop, reload, and test nginx configurations.
- Implemented graceful and immediate stop functionality.
- Enhanced error handling and logging for nginx operations.
- Added tests for deployment mode parsing and nginx lifecycle management.
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