BreakevenConnectionService

Implements IBreakeven

Connection service for breakeven tracking.

Provides memoized ClientBreakeven instances per signal ID. Acts as factory and lifetime manager for ClientBreakeven objects.

Features:

• Creates one ClientBreakeven instance per signal ID (memoized)
• Configures instances with logger and event emitter callbacks
• Delegates check/clear operations to appropriate ClientBreakeven
• Cleans up memoized instances when signals are cleared

Architecture:

• Injected into ClientStrategy via BreakevenGlobalService
• Uses memoize from functools-kit for instance caching
• Emits events to breakevenSubject

Constructor

constructor();
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Properties

loggerService

loggerService: any
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Logger service injected from DI container.

getBreakeven

getBreakeven: any
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Memoized factory function for ClientBreakeven instances.

Creates one ClientBreakeven per signal ID and backtest mode with configured callbacks. Instances are cached until clear() is called.

Key format: "signalId:backtest" or "signalId:live" Value: ClientBreakeven instance with logger and event emitter

check

check: (symbol: string, data: IPublicSignalRow, currentPrice: number, backtest: boolean, when: Date) => Promise<boolean>
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Checks if breakeven should be triggered and emits event if conditions met.

Retrieves or creates ClientBreakeven for signal ID, initializes it if needed, then delegates to ClientBreakeven.check() method.

clear

clear: (symbol: string, data: IPublicSignalRow, priceClose: number, backtest: boolean) => Promise<void>
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Clears breakeven state when signal closes.

Retrieves ClientBreakeven for signal ID, initializes if needed, delegates clear operation, then removes memoized instance.

Sequence:

1. Get ClientBreakeven from memoize cache
2. Ensure initialization (waitForInit)
3. Call ClientBreakeven.clear() - removes state, persists to disk
4. Clear memoized instance - prevents memory leaks