Type Alias Stats 

pub type Stats = KnxMetricsSnapshot;

Canonical stats surface for architecture-level composition.

Aliased Type

pub struct Stats {

    pub timestamp_ms: u64,
    pub server_state: u8,
    pub active_connections: u64,
    pub max_connections: u64,
    pub heartbeat_total_requests: u64,
    pub heartbeat_continue_count: u64,
    pub heartbeat_immediate_reconnect_count: u64,
    pub heartbeat_abandon_tunnel_count: u64,
    pub heartbeat_delayed_reconnect_count: u64,
    pub heartbeat_no_response_count: u64,
    pub heartbeat_fault_rate: f64,
    pub cache_hits_total: u64,
    pub cache_misses_total: u64,
    pub cache_hit_rate: f64,
    pub cache_lookups_total: u64,
    pub cache_evictions_total: u64,
    pub cache_expirations_total: u64,
    pub cache_updates_total: u64,
    pub cache_indication_updates: u64,
    pub cache_write_updates: u64,
    pub cache_entries_current: u64,
    pub error_tracker_successes_total: u64,
    pub error_tracker_failures_total: u64,
    pub error_tracker_error_rate: f64,
    pub error_tracker_events_total: u64,
    pub error_tracker_consecutive_triggers: u64,
    pub error_tracker_rate_triggers: u64,
    pub filter_chain_frames_sent: u64,
    pub filter_chain_frames_received: u64,
    pub filter_chain_frames_dropped: u64,
    pub filter_chain_frames_queued: u64,
    pub filter_chain_total_delay_us: u64,
    pub filter_chain_bypass_count: u64,
    pub pace_immediate_pass: u64,
    pub pace_delayed_frames: u64,
    pub pace_dropped_frames: u64,
    pub pace_total_delay_us: u64,
    pub pace_busy_to_idle: u64,
    pub pace_idle_to_down: u64,
    pub queue_direct_pass: u64,
    pub queue_queued_frames: u64,
    pub queue_dropped_full: u64,
    pub queue_evicted_frames: u64,
    pub queue_drained_frames: u64,
    pub queue_high_priority: u64,
    pub queue_normal_priority: u64,
    pub queue_low_priority: u64,
    pub retry_direct_pass: u64,
    pub retry_circuit_open_drops: u64,
    pub retry_probe_frames: u64,
    pub retry_attempts: u64,
    pub retry_successes: u64,
    pub retry_failures: u64,
    pub retry_state_transitions: u64,
    pub retry_circuit_trips: u64,
    pub retry_circuit_resets: u64,
    pub tunnel_frames_sent_total: u64,
    pub tunnel_frames_received_total: u64,
    pub tunnel_duplicates_total: u64,
    pub tunnel_out_of_order_total: u64,
    pub tunnel_fatal_desyncs_total: u64,
    pub tunnel_resets_total: u64,
    pub tunnel_fsm_transitions_total: u64,
}

Fields

timestamp_ms: u64

Snapshot timestamp (milliseconds since collector creation).

server_state: u8

Current server state (Stopped=0, Starting=1, Running=2, Stopping=3).

active_connections: u64

Number of active tunnel connections.

max_connections: u64

Maximum connection capacity.

heartbeat_total_requests: u64

Total heartbeat requests processed.

heartbeat_continue_count: u64

Number of Continue (0x00) responses.

heartbeat_immediate_reconnect_count: u64

Number of ImmediateReconnect (0x21) responses.

heartbeat_abandon_tunnel_count: u64

Number of AbandonTunnel (0x27) responses.

heartbeat_delayed_reconnect_count: u64

Number of DelayedReconnect (0x29) responses.

heartbeat_no_response_count: u64

Number of NoResponse (timeout simulation) instances.

heartbeat_fault_rate: f64

Heartbeat fault rate (non-Continue / total). 0.0-1.0.

cache_hits_total: u64

Total cache hits.

cache_misses_total: u64

Total cache misses.

cache_hit_rate: f64

Cache hit rate (0.0-1.0).

cache_lookups_total: u64

Total cache lookups.

cache_evictions_total: u64

Total cache evictions (LRU).

cache_expirations_total: u64

Total cache expirations (TTL).

cache_updates_total: u64

Total cache updates.

cache_indication_updates: u64

Cache updates from L_Data.ind indications.

cache_write_updates: u64

Cache updates from GroupValueWrite.

cache_entries_current: u64

Current number of cached entries.

error_tracker_successes_total: u64

Total successful sends across all channels.

error_tracker_failures_total: u64

Total failed sends across all channels.

error_tracker_error_rate: f64

Overall error rate (0.0-1.0).

error_tracker_events_total: u64

Total events (successes + failures).

error_tracker_consecutive_triggers: u64

Number of times consecutive error threshold was exceeded.

error_tracker_rate_triggers: u64

Number of times sliding window rate threshold was exceeded.

filter_chain_frames_sent: u64

Total frames processed in send direction.

filter_chain_frames_received: u64

Total frames processed in recv direction.

filter_chain_frames_dropped: u64

Total frames dropped by the filter chain.

filter_chain_frames_queued: u64

Total frames queued by the filter chain.

filter_chain_total_delay_us: u64

Total accumulated delay (microseconds).

filter_chain_bypass_count: u64

Total filter chain bypass count (chain disabled).

pace_immediate_pass: u64

Frames that passed immediately (no delay needed).

pace_delayed_frames: u64

Frames that were delayed for bus timing.

pace_dropped_frames: u64

Frames dropped by the pace filter.

pace_total_delay_us: u64

Total delay applied by pace filter (microseconds).

pace_busy_to_idle: u64

Busy→Idle state transitions.

pace_idle_to_down: u64

Idle→Down state transitions.

queue_direct_pass: u64

Frames that passed directly (no queuing).

queue_queued_frames: u64

Frames enqueued due to backpressure.

queue_dropped_full: u64

Frames dropped because queue was full.

queue_evicted_frames: u64

Frames evicted from lower-priority queues.

queue_drained_frames: u64

Frames drained from the queue.

queue_high_priority: u64

High-priority frames processed.

queue_normal_priority: u64

Normal-priority frames processed.

queue_low_priority: u64

Low-priority frames processed.

retry_direct_pass: u64

Frames that passed directly (circuit closed).

retry_circuit_open_drops: u64

Frames dropped because circuit breaker was open.

retry_probe_frames: u64

Probe frames sent during half-open state.

retry_attempts: u64

Total retry attempts.

retry_successes: u64

Successful transmissions tracked by retry filter.

retry_failures: u64

Failed transmissions tracked by retry filter.

retry_state_transitions: u64

Circuit breaker state transitions.

retry_circuit_trips: u64

Number of times circuit breaker tripped (Closed→Open).

retry_circuit_resets: u64

Number of times circuit breaker reset (HalfOpen→Closed).

tunnel_frames_sent_total: u64

Total frames sent across all connections (sequence tracker).

tunnel_frames_received_total: u64

Total frames received across all connections.

tunnel_duplicates_total: u64

Total duplicate frames detected.

tunnel_out_of_order_total: u64

Total out-of-order frames detected.

tunnel_fatal_desyncs_total: u64

Total fatal desync events.

tunnel_resets_total: u64

Total sequence resets.

tunnel_fsm_transitions_total: u64

Total FSM state transitions across all connections.