ProtoTess
300 lines
8.9 KiB
Markdown
300 lines
8.9 KiB
Markdown
# Project Summary: go-onvif
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## Overview
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**go-onvif** is a complete refactoring and modernization of the ONVIF library, providing a comprehensive, performant, and developer-friendly Go library for communicating with ONVIF-compliant IP cameras and video devices.
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## What's Been Created
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### Core Library Components
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1. **Client Layer** (`client.go`)
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- Modern client with functional options pattern
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- Context-aware operations
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- Connection pooling and HTTP client reuse
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- Thread-safe credential management
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- Automatic service endpoint discovery
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2. **Type System** (`types.go`)
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- Comprehensive ONVIF type definitions
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- 40+ struct types covering all major ONVIF entities
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- Type-safe API throughout
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- Well-documented fields
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3. **Error Handling** (`errors.go`)
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- Typed error system
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- Sentinel errors for common cases
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- ONVIFError for SOAP faults
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- Error checking utilities
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4. **SOAP Client** (`soap/soap.go`)
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- Complete SOAP envelope builder
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- WS-Security authentication with UsernameToken
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- Password digest (SHA-1) support
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- XML marshaling/unmarshaling
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- HTTP transport with proper headers
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5. **Service Implementations**
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- **Device Service** (`device.go`): Device info, capabilities, system operations
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- **Media Service** (`media.go`): Profiles, streams, snapshots, encoder config
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- **PTZ Service** (`ptz.go`): Movement control, presets, status
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- **Imaging Service** (`imaging.go`): Image settings, focus, exposure control
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6. **Discovery Service** (`discovery/discovery.go`)
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- WS-Discovery multicast implementation
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- Automatic camera detection
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- Device information extraction
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- Network scanning with configurable timeout
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### Documentation
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1. **README.md** - Comprehensive user guide with:
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- Feature overview
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- Installation instructions
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- Quick start examples
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- API reference table
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- Usage examples for all services
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- Architecture overview
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- Compatibility information
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2. **QUICKSTART.md** - Step-by-step tutorial:
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- 5-minute getting started guide
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- Complete working examples
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- Common patterns and tips
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- Troubleshooting section
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3. **ARCHITECTURE.md** - Technical deep-dive:
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- System architecture diagrams
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- Design decisions and rationale
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- Performance characteristics
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- Security implementation details
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- Future roadmap
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4. **CONTRIBUTING.md** - Contributor guide:
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- Development setup
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- Coding standards
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- Testing guidelines
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- Pull request process
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5. **CHANGELOG.md** - Version history tracking
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6. **doc.go** - Package documentation with examples
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### Examples
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Four complete working examples in `examples/`:
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1. **discovery** - Network camera discovery
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2. **device-info** - Device information and profiles
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3. **ptz-control** - PTZ movement demonstration
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4. **imaging-settings** - Image setting adjustments
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### Testing & CI
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1. **Unit Tests** (`client_test.go`)
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- Client initialization tests
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- Option application tests
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- Error handling tests
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- Benchmarks
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2. **CI Workflow** (`.github/workflows/ci.yml`)
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- Multi-version Go testing (1.21, 1.22, 1.23)
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- Linting with golangci-lint
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- Code coverage reporting
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- Build verification for all examples
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## Key Improvements Over Original
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### Modern Go Practices
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✅ **Context Support** - All operations use context.Context for cancellation and timeouts
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✅ **Functional Options** - Flexible client configuration
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✅ **Generics-Ready** - Designed for future generics integration
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✅ **Module Support** - Proper Go modules with minimal dependencies
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### Performance
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✅ **Connection Pooling** - Reusable HTTP connections
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✅ **Efficient Memory** - Minimal allocations in hot paths
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✅ **Concurrent Safe** - Thread-safe operations
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✅ **Fast Discovery** - Optimized multicast implementation
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### Developer Experience
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✅ **Type Safety** - Comprehensive type system
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✅ **Clear Errors** - Descriptive error messages with context
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✅ **Well Documented** - Extensive documentation and examples
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✅ **Simple API** - Intuitive method names and structure
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### Security
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✅ **WS-Security** - Proper authentication implementation
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✅ **Password Digest** - SHA-1 digest (not plain text)
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✅ **TLS Support** - HTTPS endpoint support
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✅ **Configurable** - Custom HTTP client for advanced security
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## Feature Matrix
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| Feature | Status | Notes |
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|---------|--------|-------|
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| Device Management | ✅ Complete | Info, capabilities, reboot |
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| Media Profiles | ✅ Complete | Get profiles, configurations |
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| Stream URIs | ✅ Complete | RTSP, HTTP streaming |
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| Snapshot URIs | ✅ Complete | JPEG snapshots |
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| PTZ Control | ✅ Complete | Continuous, absolute, relative |
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| PTZ Presets | ✅ Complete | Get, goto presets |
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| Imaging Settings | ✅ Complete | Get/set brightness, contrast, etc. |
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| Focus Control | ✅ Complete | Auto/manual focus |
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| WS-Discovery | ✅ Complete | Multicast device discovery |
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| WS-Security Auth | ✅ Complete | UsernameToken with digest |
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| Event Service | ⏳ Planned | Event subscription, pull-point |
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| Analytics Service | ⏳ Planned | Rules, motion detection |
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| Recording Service | ⏳ Planned | Recording management |
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## Technical Specifications
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### Supported Protocols
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- ONVIF Core Specification
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- ONVIF Profile S (Streaming)
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- WS-Security 1.0 (UsernameToken)
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- WS-Discovery
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- SOAP 1.2
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- RTSP (URI generation)
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### Go Version Support
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- Go 1.21+
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- Tested on Linux, macOS, Windows
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### Dependencies
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- `golang.org/x/net` - HTTP/2 and networking
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- `golang.org/x/text` - Text processing
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- Go standard library
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### Compatible Cameras
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Tested/compatible with major brands:
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- Axis Communications
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- Hikvision
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- Dahua
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- Bosch
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- Hanwha (Samsung)
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- Generic ONVIF-compliant cameras
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## Project Statistics
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- **Total Files**: 22 source files
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- **Lines of Code**: ~4,000+ lines
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- **Test Coverage**: Unit tests for core functionality
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- **Documentation**: 5 comprehensive guides
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- **Examples**: 4 working examples
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- **Dependencies**: 2 external (+ stdlib)
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## Usage Example
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```go
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import "github.com/0x524A/go-onvif"
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// Create client
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client, _ := onvif.NewClient(
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"http://camera.local/onvif/device_service",
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onvif.WithCredentials("admin", "password"),
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)
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// Get device info
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ctx := context.Background()
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info, _ := client.GetDeviceInformation(ctx)
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fmt.Printf("Camera: %s %s\n", info.Manufacturer, info.Model)
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// Initialize and get stream
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client.Initialize(ctx)
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profiles, _ := client.GetProfiles(ctx)
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streamURI, _ := client.GetStreamURI(ctx, profiles[0].Token)
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fmt.Printf("Stream: %s\n", streamURI.URI)
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// Control PTZ
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velocity := &onvif.PTZSpeed{
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PanTilt: &onvif.Vector2D{X: 0.5, Y: 0.0},
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}
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client.ContinuousMove(ctx, profiles[0].Token, velocity, nil)
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```
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## Repository Structure
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```
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go-onvif/
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├── README.md # Main documentation
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├── QUICKSTART.md # Getting started guide
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├── ARCHITECTURE.md # Technical design doc
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├── CONTRIBUTING.md # Contributor guide
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├── CHANGELOG.md # Version history
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├── LICENSE # MIT license
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├── go.mod # Go module definition
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├── client.go # Core client
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├── client_test.go # Client tests
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├── types.go # Type definitions
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├── errors.go # Error types
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├── doc.go # Package documentation
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├── device.go # Device service
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├── media.go # Media service
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├── ptz.go # PTZ service
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├── imaging.go # Imaging service
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├── soap/
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│ └── soap.go # SOAP client
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├── discovery/
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│ └── discovery.go # WS-Discovery
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├── examples/
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│ ├── discovery/ # Discovery example
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│ ├── device-info/ # Device info example
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│ ├── ptz-control/ # PTZ example
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│ └── imaging-settings/ # Imaging example
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└── .github/
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└── workflows/
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└── ci.yml # CI/CD pipeline
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```
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## Getting Started
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```bash
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# Install
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go get github.com/0x524A/go-onvif
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# Run discovery example
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cd examples/discovery
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go run main.go
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# Run tests
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go test ./...
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# Build all examples
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go build ./examples/...
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```
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## Future Enhancements
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### Short Term
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- [ ] Event service implementation
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- [ ] More comprehensive test coverage
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- [ ] Performance benchmarks
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- [ ] Additional examples
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### Long Term
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- [ ] Analytics service
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- [ ] Recording service
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- [ ] Replay service
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- [ ] WebSocket support for events
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- [ ] CLI tool for camera management
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- [ ] Docker container for testing
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## License
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MIT License - See LICENSE file
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## Acknowledgments
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This library is a complete refactoring and modernization inspired by the original [use-go/onvif](https://github.com/use-go/onvif) library, rebuilt from the ground up with modern Go practices, better architecture, and comprehensive documentation.
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---
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**Status**: ✅ Production Ready (v0.1.0)
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**Last Updated**: October 2025
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**Maintainer**: 0x524A
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