QosManager

chie_core::qos

Struct QosManager 

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pub struct QosManager { /* private fields */ }
Expand description

Quality of Service manager for priority-based request handling.

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impl QosManager

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pub fn new(config: QosConfig) -> Self

Create a new QoS manager with the given configuration.

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pub async fn enqueue(&mut self, request: RequestInfo) -> bool

Enqueue a request with the specified priority.

Returns true if the request was enqueued, false if the queue is full.

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pub async fn dequeue(&mut self) -> Option<RequestInfo>

Dequeue the next request based on priority and scheduling policy.

Supports deadline scheduling: requests with approaching deadlines are prioritized over normal priority scheduling.

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pub fn queue_depth(&self, priority: Priority) -> usize

Get current queue depth for a priority level.

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pub fn total_queue_depth(&self) -> usize

Get total queue depth across all priorities.

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pub fn get_sla_metrics(&self, priority: Priority) -> Option<SlaMetrics>

Get SLA metrics for a priority level.

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pub fn get_all_sla_metrics(&self) -> HashMap<Priority, SlaMetrics>

Get SLA metrics for all priority levels.

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pub fn reset_metrics(&mut self)

Reset all SLA metrics.

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pub fn is_near_capacity(&self) -> bool

Check if any queue is near capacity (>80% full).

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pub fn overall_compliance_rate(&self) -> f64

Get overall SLA compliance rate across all priorities.

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pub fn update_resource_pressure(&mut self, pressure: ResourcePressure)

Update current resource pressure.

This allows QoS to adapt behavior based on system resource availability.

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pub fn get_resource_pressure(&self) -> ResourcePressure

Get current resource pressure.

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pub fn is_under_high_pressure(&self) -> bool

Check if system is under high resource pressure.

Returns true if overall resource pressure exceeds 0.80.

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pub fn adaptive_queue_limit(&self) -> usize

Get adaptive queue size limit based on resource pressure.

Reduces queue size when under pressure to prevent resource exhaustion.

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pub fn should_throttle_priority(&self, priority: Priority) -> bool

Check if should throttle low-priority requests based on resource pressure.

Returns true if resource pressure is high and priority is Low.

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