ConnectorFactory

The ConnectorFactory is a registry for dynamically constructing ExchangeConnector instances by type.
It supports runtime registration of connector implementations and symbol-specific instantiation.

Purpose

To decouple connector instantiation from hardcoded logic and enable flexible, pluggable exchange integration.

Class Definition

class ConnectorFactory {
public:
  using CreatorFunc = std::function<std::shared_ptr<ExchangeConnector>(const std::string &symbol)>;

  static ConnectorFactory &instance();

  void registerConnector(const std::string &type, CreatorFunc creator);
  std::shared_ptr<ExchangeConnector> createConnector(const std::string &type, const std::string &symbol) const;

private:
  ConnectorFactory() = default;
};

Responsibilities

• Registers connector creation functions keyed by string type (e.g. "bybit", "mock")
• Creates new ExchangeConnector instances on demand using the symbol name
• Acts as a singleton factory used during engine startup or reconfiguration

Use Cases

• Symbol-specific connector routing
• Plugin-like architecture for exchange connectors
• Dynamic or test-time substitution of connector logic

Notes

• The CreatorFunc lambda should capture and bind any necessary context
• Returns nullptr if the requested type is not registered