IOrderExecutor

IOrderExecutor defines the interface for components responsible for submitting, canceling, and replacing orders. It acts as the execution gateway in both simulated and live environments.

class IOrderExecutor : public ISubsystem {
public:
  virtual ~IOrderExecutor() = default;

  virtual void submitOrder(const Order& order) {};
  virtual void cancelOrder(OrderId orderId) {};
  virtual void replaceOrder(OrderId oldOrderId, const Order& newOrder) {};
};

Purpose

• Abstract execution interface used by strategies and internal components to place and manage orders.

Responsibilities

Method	Description
submitOrder	Sends a new order to the execution venue or simulator.
cancelOrder	Cancels a previously submitted order.
replaceOrder	Replaces an existing order with new parameters.

Notes

• Implements ISubsystem, enabling lifecycle coordination via start() and stop().
• Can be backed by mocks, simulators, or real exchange adapters.
• Actual routing and fill simulation logic resides in concrete subclasses.