fix(session-store): fail closed off Linux

Signed-off-by: VerifiedOrganic <verifiedorganic@sent.com>

Author: VerifiedOrganic

crates/opc-session-store/src/consensus/store.rs

@@ -454,6 +454,14 @@ impl fmt::Debug for ConsensusSessionStore {
 }
 
 impl ConsensusSessionStore {
+    fn require_dynamic_consensus_platform() -> Result<(), ConsensusSessionStoreOpenError> {
+        if cfg!(target_os = "linux") {
+            Ok(())
+        } else {
+            Err(ConsensusSessionStoreOpenError::DynamicConsensusUnsupportedPlatform)
+        }
+    }
+
     /// Start one durable Openraft node without yet forming pristine membership.
     ///
     /// `topology` contains only immutable member descriptors. `backend` is this
@@ -468,6 +476,7 @@ impl ConsensusSessionStore {
         snapshot_dir: impl Into<PathBuf>,
         peers: BTreeMap<SessionConsensusNodeId, Arc<dyn SessionConsensusPeer>>,
     ) -> Result<Self, ConsensusSessionStoreOpenError> {
+        Self::require_dynamic_consensus_platform()?;
         Self::open_with_clock(
             topology,
             backend,
@@ -634,6 +643,7 @@ impl ConsensusSessionStore {
         peers: BTreeMap<SessionConsensusNodeId, Arc<dyn SessionConsensusPeer>>,
         operation_timeout: Duration,
     ) -> Result<Self, ConsensusSessionStoreOpenError> {
+        Self::require_dynamic_consensus_platform()?;
         Self::open_with_clock(
             topology,
             backend,
@@ -657,6 +667,7 @@ impl ConsensusSessionStore {
         clock: Arc<dyn Clock>,
         operation_timeout: Duration,
     ) -> Result<Self, ConsensusSessionStoreOpenError> {
+        Self::require_dynamic_consensus_platform()?;
         if operation_timeout.is_zero() || operation_timeout > Duration::from_secs(60) {
             return Err(ConsensusSessionStoreOpenError::InvalidRuntimeConfiguration);
         }

crates/opc-session-store/src/consensus/store/membership.rs

@@ -1186,6 +1186,7 @@ impl ConsensusSessionStore {
         snapshot_dir: impl Into<PathBuf>,
         desired_peers: SessionTopologyTransitionPeers,
     ) -> Result<Self, ConsensusSessionStoreOpenError> {
+        Self::require_dynamic_consensus_platform()?;
         let SessionTopologyCandidateBootstrap {
             storage_anchor,
             current_topology,

crates/opc-session-store/src/sqlite/consensus.rs

@@ -1191,6 +1191,9 @@ impl SqliteConsensusCore {
         authority_profile: ConsensusAuthorityProfile,
         fixed_placement_policy: Option<PlacementResiliencePolicy>,
     ) -> Result<Self, SessionConsensusStorageError> {
+        if !cfg!(target_os = "linux") {
+            return Err(SessionConsensusStorageError::UnsupportedPlatform);
+        }
         validate_member_set(&expected_members, false)
             .map_err(|_| SessionConsensusStorageError::InvalidIdentity)?;
         validate_member_bindings(&expected_members, &expected_bindings)