firmware-base/docs/Bridge.md

title	description	keywords
Bridge Component	A communication bridge component for handling inter-component messaging and registering method calls	bridge communication messaging inter-component method registry ESP-32 industrial

BRIDGE

Path: src/Bridge.cpp

Revision History: Initial documentation

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.

REQUIREMENTS

• No specific hardware pins required
• Component base class
• String manipulation capabilities
• Vector container support

FEATURES

• Component method registration and management
• Inter-component message handling
• Component instance tracking and retrieval
• Debugging and listing capabilities
• Method delimiter-based parsing
• Integration with Modbus Manager

DEPENDENCIES

• Component
• WString
• Vector
• Streaming
• xtypes
• enums
• macros

graph TD;
    Bridge["Bridge"] -->|extends| Component["Component"];
    Bridge -->|uses| WString["WString"];
    Bridge -->|uses| Vector["Vector"];
    Bridge -->|uses| Streaming["Streaming"];
    Bridge -->|uses| xtypes["xtypes"];
    Bridge -->|uses| enums["enums"];

BEHAVIOUR

stateDiagram-v2
    [*] --> INITIALIZATION
    INITIALIZATION --> REGISTRATION : setup()
    REGISTRATION --> READY : register components
    READY --> MESSAGE_HANDLING : onMessage()
    MESSAGE_HANDLING --> DEBUGGING : debug()
    MESSAGE_HANDLING --> READY : return status
    DEBUGGING --> READY
    READY --> LISTING : getComponentList()
    LISTING --> READY

TODOS

PERFORMANCE

• Implement component method caching for faster lookups
• Optimize memory usage by pre-allocating component storage
• Add method call frequency monitoring
• Consider asynchronous message processing

SECURITY

• Implement access control for component method registration
• Implement message authentication and encryption
• Add signed message data integrity checks
• Enable inter-component communication logging

COMPLIANCE

• Ensure error handling complies with industrial standards
• Implement message logging for audit requirements
• Validate time-critical communication performance
• Consider system failover and redundancy in communication

RECOMMENDATIONS

• Use structured error codes for consistent message handling
• Maintain component hierarchies to maintain clear dependencies
• Implement event driven architecture for inter-component synchronization
• Add component lifecycle tracking

EXAMPLE

Based on the available header file:

#defdef ENABLE_BRIDGE_COMMUNICATION
  bridge = new Bridge(
      this                  // owner
  );
  if (bridge)
  {
    components.push_back(bridge);
    Log.infoln(F("Bridge initialized."));
  }
  else
  {
     Log.errorln(F("Bridge initialization failed."));
  }
#endif

References

${DOXYGEN_PLACEHOLDER}

${VENDOR_PLACEHOLDER}