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vm-migration: Simplify SnapshotDataSection structure

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Signed-off-by: Sebastien Boeuf <sebastien.boeuf@intel.com>
This commit is contained in:
Sebastien Boeuf 2022-12-02 14:44:40 +01:00
parent 5b3bcfa233
commit 1b32e2f8b2
2 changed files with 10 additions and 19 deletions
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25
vm-migration/src/lib.rs
View File

@ -80,10 +80,7 @@ pub trait Pausable {
/// Splitting a component migration data into different sections
/// allows for easier and forward compatible extensions.
#[derive(Clone, Default, Deserialize, Serialize)]
pub struct SnapshotDataSection {
/// The section serialized snapshot.
pub snapshot: Vec<u8>,
}
pub struct SnapshotDataSection(pub Vec<u8>);
impl SnapshotDataSection {
/// Generate the state data from the snapshot data
@ -91,7 +88,7 @@ impl SnapshotDataSection {
where
T: Deserialize<'a>,
{
serde_json::from_slice(&self.snapshot)
serde_json::from_slice(&self.0)
.map_err(|e| MigratableError::Restore(anyhow!("Error deserialising: {}", e)))
}
@ -100,12 +97,8 @@ impl SnapshotDataSection {
where
T: Versionize + VersionMapped,
{
T::deserialize(
&mut self.snapshot.as_slice(),
&T::version_map(),
VMM_VERSION,
)
.map_err(|e| MigratableError::Restore(anyhow!("Error deserialising: {}", e)))
T::deserialize(&mut self.0.as_slice(), &T::version_map(), VMM_VERSION)
.map_err(|e| MigratableError::Restore(anyhow!("Error deserialising: {}", e)))
}
/// Create from state that can be serialized
@ -113,10 +106,10 @@ impl SnapshotDataSection {
where
T: Serialize,
{
let snapshot = serde_json::to_vec(state)
let data = serde_json::to_vec(state)
.map_err(|e| MigratableError::Snapshot(anyhow!("Error serialising: {}", e)))?;
let snapshot_data = SnapshotDataSection { snapshot };
let snapshot_data = SnapshotDataSection(data);
Ok(snapshot_data)
}
@ -126,12 +119,12 @@ impl SnapshotDataSection {
where
T: Versionize + VersionMapped,
{
let mut snapshot = Vec::new();
let mut data = Vec::new();
state
.serialize(&mut snapshot, &T::version_map(), VMM_VERSION)
.serialize(&mut data, &T::version_map(), VMM_VERSION)
.map_err(|e| MigratableError::Snapshot(anyhow!("Error serialising: {}", e)))?;
let snapshot_data = SnapshotDataSection { snapshot };
let snapshot_data = SnapshotDataSection(data);
Ok(snapshot_data)
}

4
vmm/src/vm.rs
View File

@ -2521,9 +2521,7 @@ impl Snapshottable for Vm {
vm_snapshot.add_snapshot(self.memory_manager.lock().unwrap().snapshot()?);
vm_snapshot.add_snapshot(self.device_manager.lock().unwrap().snapshot()?);
vm_snapshot.add_data_section(SnapshotDataSection {
snapshot: vm_snapshot_data,
});
vm_snapshot.add_data_section(SnapshotDataSection(vm_snapshot_data));
event!("vm", "snapshotted");
Ok(vm_snapshot)