Struct RuntimeInputs 

pub struct RuntimeInputs {
    pub channel: ChannelIdentity,
    pub channel_id: ChannelId,
    pub self_node_id: NodeId,
    pub replica_set: Vec<NodeId>,
    pub heartbeat_ms: u64,
    pub wall_clock_provider: Arc<dyn Fn() -> u64 + Send + Sync>,
    pub tail_provider: Arc<dyn Fn() -> u64 + Send + Sync>,
    pub rtt_lookup: RttLookup,
    pub file: RedexFile,
    pub default_bandwidth_class: BandwidthClass,
    pub background_fraction: f32,
}

Inputs the runtime task captures at spawn time. The tail_provider closure reads the current RedexFile::next_seq() — passed as a closure so the runtime doesn’t take ownership of the file handle (the file’s owner is Redex).

Fields

channel: ChannelIdentity

Channel identity + origin_hash.

channel_id: ChannelId

32-byte BLAKE2s channel id for the wire-format heartbeat.

self_node_id: NodeId

This node’s id.

replica_set: Vec<NodeId>

Replica-set membership — every node currently registered as a replica for the channel. Coordinator updates this when the placement filter re-selects (Phase C / F).

heartbeat_ms: u64

Heartbeat cadence in milliseconds (mirrors ReplicationConfig::heartbeat_ms). The tokio interval drives at this cadence.

wall_clock_provider: Arc<dyn Fn() -> u64 + Send + Sync>

Function returning the wall-clock milliseconds for the outbound heartbeat’s wall_clock_ms field. Operator- facing drift detection only; abstracted so tests can inject a deterministic value.

tail_provider: Arc<dyn Fn() -> u64 + Send + Sync>

Function returning the current local tail_seq. Called each tick before emission so heartbeats carry the freshest value.

rtt_lookup: RttLookup

RTT lookup for the election function.

file: RedexFile

The local RedexFile for this channel. The runtime holds a clone (RedexFile is Clone — Arc-backed) so it can drive handle_sync_request on inbound SyncRequest frames (leader path) and apply_sync_response on inbound SyncResponse frames (replica path). The tail_provider closure typically wraps file.next_seq().

default_bandwidth_class: BandwidthClass

Per-channel default super::bandwidth::BandwidthClass — stamped on every SyncRequest the runtime emits. v0.3 Phase D2. Sourced from ReplicationConfig::default_bandwidth_class.

background_fraction: f32

v0.3 Phase D2 admission-gate parameter: fraction of the bandwidth bucket capacity reserved against Background. Default 0.3 via ReplicationConfig::background_fraction.