Struct NodeEnvironment 

pub struct NodeEnvironment {
    pub driver: Arc<dyn VmDriver>,
    pub network: Arc<dyn GuestNetwork>,
    pub agent: Arc<dyn GuestAgentFactory>,
    pub cow_manager: Arc<CowManager>,
}

What differs between hosts of the sandbox stack.

Fields

driver: Arc<dyn VmDriver>

The VMM the sandboxes run under, behind the driver port (arcbox_vm_driver::VmDriver). It must claim the Prepare and Staging capabilities and offer vsock: the boot and warm-pool flows spawn the VMM ahead of the guest, every flow stages the files its computer boots from, and the guest agent is reached over vsock. A driver that cannot is refused by ComputerManager::new rather than at the first boot.

network: Arc<dyn GuestNetwork>

What the sandboxes’ NICs attach to, behind the guest-network port (arcbox_vm_driver::net::GuestNetwork). It must offer the NetworkReconcile capability: the quarantine ledger is how a host learns which addresses a previous process still holds, and a network without it is refused at construction rather than at the first cleanup ticket.

agent: Arc<dyn GuestAgentFactory>

How the runtime reaches the agent inside each sandbox, behind the guest-agent port (crate::agent::GuestAgentFactory). The reference is the arcbox-vm-proto client over the driver’s vsock capability (crate::agent::VmProtoAgentFactory), which is what every Firecracker sandbox speaks; a composer whose Computers are not reachable that way supplies its own. The factory also decides what the readiness gate needs from the driver, so an environment whose driver cannot serve it is refused at construction rather than at the first boot.

cow_manager: Arc<CowManager>

The copy-on-write rootfs manager. Built by the composer, because what it needs — the data directory, the loop-device tooling of the host’s userland, where its dmsetup lives — is exactly what differs between environments.

Trait Implementations

impl Clone for NodeEnvironment

fn clone(&self) -> Self

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for NodeEnvironment

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.