Major refactoring of the codebase, including restructuring of files and directories, renaming of modules and classes, and improvements to the overall organization and readability of the code. This refactoring aims to enhance maintainability, scalability, and clarity of the codebase while preserving existing functionality. The changes include:
- Restructuring of the project directory into client and server components - Renaming of modules and classes to better reflect their purpose and functionality - Moving common utilities and configurations to a shared location - Updating import statements to reflect the new structure - Adding new documentation files for better clarity on various aspects of the project - Removing deprecated or unused code to streamline the codebase - Ensuring that all existing functionality is preserved and that the codebase remains functional after the refactoring.
This commit is contained in:
Andreas Wrede
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# HBD/HBC Separation Refactoring
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## Overview
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The heartbeat monitoring system has been refactored into a modular package structure with separate client and server components. This allows users to install only what they need and provides clear separation of concerns.
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## New Package Structure
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```
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hbd/
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├── __init__.py # Main package (minimal)
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├── client/ # HBC - System monitoring client
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│ ├── __init__.py
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│ ├── main.py # Entry point (was hbc.py)
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│ ├── config.py # Client-specific configuration
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│ ├── plugin.py # Plugin framework
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│ ├── threshold.py # Threshold checking
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│ └── plugins/ # Monitoring plugins
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│ ├── cpu_monitor.py
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│ ├── disk_monitor.py
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│ ├── memory_monitor.py
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│ ├── network_monitor.py
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│ ├── filesystem_info.py
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│ ├── os_info.py
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│ └── nagios_runner.py
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├── server/ # HBD - Heartbeat daemon/server
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│ ├── __init__.py
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│ ├── main.py # Server runtime (was server.py)
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│ ├── cli.py # Command-line interface
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│ ├── config.py # Server-specific configuration
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│ ├── http.py # HTTP/REST API
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│ ├── ws.py # WebSocket server
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│ ├── udp.py # UDP heartbeat listener
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│ ├── dns.py # DNS update functionality
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│ ├── notify.py # Notification handlers
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│ ├── monitor.py # Host monitoring
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│ ├── hbdclass.py # Host class definitions
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│ ├── journal.py # Message journaling
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│ ├── templates/ # Jinja2 web templates
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│ └── static/ # Web UI assets
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└── common/ # Shared utilities
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├── __init__.py
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├── proto.py # Protocol encoding/decoding
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└── utils.py # Common utilities
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## Configuration Files
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### Client Configuration (hbd/client/config.py)
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Client-specific defaults:
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- `hb_port`: Port where hbd servers listen (default: 50003)
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- `interval`: Heartbeat interval in seconds (default: 10)
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- `plugins`: Per-plugin configuration
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- `thresholds`: Threshold configuration for monitoring
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### Server Configuration (hbd/server/config.py)
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Server-specific defaults:
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- `hb_port`: Port to listen for heartbeats (default: 50003)
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- `hbd_port`: HTTP API port (default: 50004)
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- `ws_port`: WebSocket port (default: 50005)
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- `logfile`, `logfmt`: Logging configuration
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- `pushsrv`, `pushover_token`, etc.: Notification settings
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- `watchhosts`, `dyndnshosts`: Host monitoring
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- `smtpserver`, etc.: Email settings
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- `journal_*`: Message journaling settings
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## Installation Options
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### Install Core Only (minimal, PyYAML only)
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```bash
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pip install hbd
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```
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### Install Client Only (for monitoring)
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```bash
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pip install hbd[client]
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# Installs: PyYAML, psutil
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```
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### Install Server Only (for daemon)
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```bash
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pip install hbd[server]
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# Installs: PyYAML, websockets, mattermostdriver, aiohttp, Jinja2
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```
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### Install Everything
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```bash
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pip install hbd[all]
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# Installs all dependencies for both client and server
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```
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### Development Installation
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```bash
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pip install -e ".[dev]"
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# Includes all dependencies plus testing/linting tools
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```
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## Command-Line Interfaces
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### HBC (Client)
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```bash
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hbc [options] host1 [host2 ...]
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# Entry point: hbd.client.main:main
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# Location: hbd/client/main.py
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```
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### HBD (Server)
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```bash
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hbd [options]
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# Entry point: hbd.server.cli:main
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# Location: hbd/server/cli.py → hbd/server/main.py
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```
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## Import Changes
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### Client Code
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```python
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# Old imports
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from .config import load_config
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from .proto import dicttos, stodict
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from .plugin import PluginRegistry
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# New imports
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from .config import load_config # Still in client/
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from ..common.proto import dicttos # Moved to common/
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from .plugin import PluginRegistry # Still in client/
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```
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### Server Code
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```python
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# Old imports
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from .config import load_config
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from .proto import stodict
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from .threshold import AlertLevel
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# New imports
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from .config import load_config # Server-specific config
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from ..common.proto import stodict # Moved to common/
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from ..client.threshold import AlertLevel # Client module
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```
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### Plugin Code
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```python
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# Old import
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from hbd.plugin import MonitorPlugin
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# New import
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from hbd.client.plugin import MonitorPlugin
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```
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## Benefits
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1. **Modular Installation**: Install only what you need
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- Client-only systems don't need web server dependencies
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- Server-only systems don't need psutil
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2. **Clearer Architecture**: Explicit separation of concerns
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- Client: System monitoring and data collection
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- Server: Heartbeat reception, web UI, notifications
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- Common: Shared protocol and utilities
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3. **Independent Evolution**: Client and server can evolve separately
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- Different release cycles possible
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- Clear API boundaries via common/
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4. **Smaller Footprint**: Reduced dependency installation
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- Client: ~1 dependency (psutil)
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- Server: ~4 dependencies (websockets, aiohttp, Jinja2, mattermostdriver)
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## Migration Guide
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### For Existing Installations
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1. **Reinstall the package**:
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```bash
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pip install -e ".[all]" # For development
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# or
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pip install hbd[all] # For production
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```
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2. **Configuration files remain unchanged**:
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- Both client and server read from `~/.hb.yaml`
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- All existing config keys are supported in both configs
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- Server has additional keys (journal, websocket, email, etc.)
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- Client has minimal keys (interval, plugins, thresholds)
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3. **Commands remain the same**:
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- `hbc` command works identically
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- `hbd` command works identically
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### For New Deployments
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1. **Client-only system** (monitoring host):
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```bash
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pip install hbd[client]
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hbc server1.example.com server2.example.com
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```
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2. **Server-only system** (monitoring daemon):
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```bash
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pip install hbd[server]
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hbd -c /etc/hbd.yaml -f
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```
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3. **Combined system** (dev/test):
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```bash
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pip install hbd[all]
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```
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## Testing
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All imports and entry points have been tested and validated:
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- ✅ Package imports work correctly
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- ✅ `hbc` command entry point functional
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- ✅ `hbd` command entry point functional
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- ✅ Optional dependencies properly configured
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- ✅ All internal imports updated
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## Files Archived
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The following files were renamed to avoid conflicts:
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- `hbd/config.py` → `hbd/config.py.old` (split into client/server configs)
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- `hbd/hbc_old.py` → `hbd/hbc_old.py.bak` (backup file)
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## Next Steps
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1. Test client functionality with a monitoring host
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2. Test server functionality with web UI and notifications
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3. Update documentation (README.md) with new structure
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4. Consider publishing to PyPI with new structure
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5. Update any deployment scripts/Dockerfiles to use optional dependencies
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