PersistSessionInstance

Implements IPersistSessionInstance

Default file-based implementation of IPersistSessionInstance.

Features:

• Wraps PersistBase for atomic JSON writes
• Uses frameName as entity ID within a per-strategy/exchange PersistBase
• dispose is a no-op (memo cache is managed by PersistSessionUtils)

Constructor

constructor(strategyName: string, exchangeName: string, frameName: string, symbol: string, backtest: boolean);
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Properties

strategyName

strategyName: string
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exchangeName

exchangeName: string
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frameName

frameName: string
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symbol

symbol: string
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backtest

backtest: boolean
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_storage

_storage: any
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Underlying file-based storage scoped to this context

_entityId

_entityId: any
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Entity key inside the per-strategy/exchange/frame storage directory. Includes the symbol and backtest flag: without them two symbols running the same strategy would clobber one shared record and restore each other's session state after a restart.

Methods

waitForInit

waitForInit(initial: boolean): Promise<void>;
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Initializes the underlying PersistBase storage.

readSessionData

readSessionData(): Promise<SessionData | null>;
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Reads the persisted session data using the per-symbol entity key.

writeSessionData

writeSessionData(data: SessionData, _when: Date): Promise<void>;
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Writes the session data using the per-symbol entity key.

dispose

dispose(): void;
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No-op for the default file-based implementation. Resource cleanup (memo cache invalidation) is handled by PersistSessionUtils.dispose().