Function array_vshard_for_name

nodedb-cluster/src/array_routing.rs:42–48

Compute a vShard ID from an array name alone. Array-specific name-only fallback used by `array_sync` paths that route before a coordinate or tile extent is known. Uses the same DJB multiply-31 hash as `VShardId::from_collection_in_database`, but without the database scope — array-sync messages carry their own scoping in the op-log header and route per-array by name.

(array_name: &str)

/// the database scope — array-sync messages carry their own scoping in the
/// op-log header and route per-array by name.
pub fn array_vshard_for_name(array_name: &str) -> u32 {
    let hash = array_name
        .as_bytes()
        .iter()
        .fold(0u32, |h, &b| h.wrapping_mul(31).wrapping_add(b as u32));
    hash % VSHARD_COUNT
}

/// Compute a vShard ID from an arbitrary byte key.
///