Replace external reachability with an owned canary

crates/lazaret-runtime-supervisor/src/supervision.rs

@@ -32,7 +32,7 @@ use rustix::io::{FdFlags, fcntl_setfd, read, write};
 use rustix::process::Signal;
 use serde::{Deserialize, Serialize};
 
-use crate::network::{NetworkProbeRequest, PreparedNetwork};
+use crate::network::PreparedNetwork;
 use crate::sandbox::RunscCommand;
 
 use handoff::{build_runtime_handoff, parse_runtime_handoff};
@@ -47,7 +47,6 @@ const TERMINATION_GRACE: Duration = Duration::from_secs(2);
 
 pub const RUNTIME_SUPERVISOR_SERIALIZED_RECORD_TYPE_NAMES: &[&str] = &[
     "RuntimeSupervisorHandoff",
-    "NetworkProbeRequest",
     "AttachedRunscSignal",
     "SupervisorEvent",
     "CoordinatorMessage",
@@ -92,7 +91,7 @@ pub enum SupervisorEvent {
     HelperStaged(StagedProcessOwnership),
     HelperReady(StagedProcessOwnership),
     NetworkAttestation(NetworkReadinessAttestation),
-    NetworkProbe(lazaret_core::records::NetworkReachabilityProbe),
+    NetworkCanary(lazaret_core::records::NetworkCanaryObservation),
     HelperExited,
     Staged(StagedProcessOwnership),
     Ready {
@@ -132,7 +131,7 @@ enum CoordinatorMessage {
     GitRoutingStagedAck(ProcessOwnershipCommitAck),
     StartSidecar,
     HelperStagedAck(ProcessOwnershipCommitAck),
-    NetworkAttestationAccepted(NetworkProbeRequest),
+    NetworkAttestationAccepted,
     NetworkReadinessCommitted,
     StagedAck(ProcessOwnershipCommitAck),
     SandboxCommitted,
@@ -232,10 +231,10 @@ impl CoordinatorChannel {
 
     /// # Errors
     /// Returns an error when accepted attestation cannot release sandbox acquisition.
-    pub fn acknowledge_network_attestation(&self, request: NetworkProbeRequest) -> io::Result<()> {
+    pub fn acknowledge_network_attestation(&self) -> io::Result<()> {
         send_message(
             &self.descriptor,
-            &CoordinatorMessage::NetworkAttestationAccepted(request),
+            &CoordinatorMessage::NetworkAttestationAccepted,
         )
     }