Struct RiskModule 

pub struct RiskModule { /* private fields */ }

Implementations

impl RiskModule

pub fn new( rest_client: Arc<BinanceRestClient>, global_rate_limit_per_minute: u32, ) -> Self

Build a risk module with a per-minute global rate budget.

global_rate_limit_per_minute is clamped to at least 1 to prevent an always-rejecting configuration.

pub fn rate_budget_snapshot(&self) -> RateBudgetSnapshot

Return current global rate-budget usage.

Use this for UI/telemetry only. It does not reserve capacity.

pub fn reserve_rate_budget(&mut self) -> bool

Reserve one unit from the global rate budget.

This method resets the rolling minute window when needed and then consumes exactly one request token.

Returns false when the current minute budget is exhausted.

Usage

Call this once per outbound broker request, after risk approval and immediately before submission.

Caution

Do not call this speculatively and then skip submission; doing so reduces usable throughput and can cause unnecessary rejections.

pub async fn evaluate_intent( &self, intent: &OrderIntent, balances: &HashMap<String, f64>, ) -> Result<RiskDecision>

Evaluate an order intent against risk rules and exchange filters.

This performs:

• price availability validation,
• quantity derivation and normalization by market rules,
• min/max quantity validation,
• spot balance sufficiency checks.

Returns

• Ok(RiskDecision { approved: true, .. }) when submission is allowed.
• Ok(RiskDecision { approved: false, .. }) for expected business-rule rejection (insufficient balance, too-small qty, etc).
• Err(_) when exchange metadata fetch fails or other runtime errors occur.

Usage

Use as the first gate in an order pipeline:

1. Build OrderIntent.
2. Call evaluate_intent.
3. If approved, call reserve_rate_budget.
4. Submit order to broker.

Caution

• balances should be recently refreshed. Stale balances can produce false approvals/rejections.
• For spot sell, requested size is currently driven by available base balance and then normalized, not by order_amount_usdt.
• This function does not place orders or mutate state.