122 lines
3.0 KiB
Markdown
122 lines
3.0 KiB
Markdown
---
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title: "Bridge Component"
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description: "A communication bridge component for handling inter-component messaging and registering method calls"
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keywords: ["bridge", "communication", "messaging", "inter-component", "method registry", "ESP-32", "industrial"]
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---
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# BRIDGE
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**Path**: [src/Bridge.cpp](../../src/Bridge.cpp)
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**Revision History**: Initial documentation
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A communication bridge component that facilitates inter-component messaging and method registration. The Bridge acts as a central hub for communication between different system components and provides services for Modbus management.
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## REQUIREMENTS
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- No specific hardware pins required
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- Component base class
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- String manipulation capabilities
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- Vector container support
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## FEATURES
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- Component method registration and management
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- Inter-component message handling
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- Component instance tracking and retrieval
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- Debugging and listing capabilities
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- Method delimiter-based parsing
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- Integration with Modbus Manager
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## DEPENDENCIES
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- [Component](./Component.md)
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- WString
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- Vector
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- Streaming
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- xtypes
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- enums
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- macros
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```mermaid
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graph TD;
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Bridge["Bridge"] -->|extends| Component["Component"];
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Bridge -->|uses| WString["WString"];
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Bridge -->|uses| Vector["Vector"];
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Bridge -->|uses| Streaming["Streaming"];
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Bridge -->|uses| xtypes["xtypes"];
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Bridge -->|uses| enums["enums"];
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```
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## BEHAVIOUR
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```mermaid
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stateDiagram-v2
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[*] --> INITIALIZATION
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INITIALIZATION --> REGISTRATION : setup()
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REGISTRATION --> READY : register components
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READY --> MESSAGE_HANDLING : onMessage()
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MESSAGE_HANDLING --> DEBUGGING : debug()
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MESSAGE_HANDLING --> READY : return status
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DEBUGGING --> READY
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READY --> LISTING : getComponentList()
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LISTING --> READY
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```
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## TODOS
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### PERFORMANCE
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- Implement component method caching for faster lookups
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- Optimize memory usage by pre-allocating component storage
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- Add method call frequency monitoring
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- Consider asynchronous message processing
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### SECURITY
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- Implement access control for component method registration
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- Implement message authentication and encryption
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- Add signed message data integrity checks
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- Enable inter-component communication logging
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### COMPLIANCE
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- Ensure error handling complies with industrial standards
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- Implement message logging for audit requirements
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- Validate time-critical communication performance
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- Consider system failover and redundancy in communication
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### RECOMMENDATIONS
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- Use structured error codes for consistent message handling
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- Maintain component hierarchies to maintain clear dependencies
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- Implement event driven architecture for inter-component synchronization
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- Add component lifecycle tracking
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## EXAMPLE
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Based on the available header file:
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```cpp
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#defdef ENABLE_BRIDGE_COMMUNICATION
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bridge = new Bridge(
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this // owner
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);
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if (bridge)
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{
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components.push_back(bridge);
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Log.infoln(F("Bridge initialized."));
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}
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else
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{
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Log.errorln(F("Bridge initialization failed."));
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}
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#endif
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```
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### References
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${DOXYGEN_PLACEHOLDER}
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${VENDOR_PLACEHOLDER}
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