Struct ComponentSnapshot 

pub struct ComponentSnapshot {
    pub component_fqn: String,
    pub version: u32,
    pub state: Value,
    pub metadata: HashMap<String, Value>,
}

Component state snapshot.

Stores a component’s serialized state along with metadata for safe restoration.

Fields

• component_fqn: Fully qualified name (namespace::name) for cross-session matching
• version: Format version for compatibility checking
• state: Serialized component state
• metadata: Optional additional data (timestamps, checksums, etc.)

Fields

component_fqn: String

Fully qualified name (namespace::name) for validation.

Uses FQN instead of full ComponentId because UUIDs differ between sessions.

version: u32

Snapshot format version.

state: Value

Serialized component state.

metadata: HashMap<String, Value>

Optional metadata.

Implementations

impl ComponentSnapshot

pub fn from_state<T: Serialize>( fqn: impl Into<String>, state: &T, ) -> Result<Self, SnapshotError>

Creates a new snapshot from serializable state.

Arguments

• fqn - The component’s fully qualified name (namespace::name)
• state - The state to serialize

Errors

Returns SnapshotError::Serialization if the state cannot be serialized.

pub fn empty(fqn: impl Into<String>) -> Self

Creates an empty snapshot (for components with no state).

pub fn to_state<T: for<'de> Deserialize<'de>>(&self) -> Result<T, SnapshotError>

Deserializes the state.

Errors

Returns SnapshotError::Serialization if deserialization fails.

pub fn with_metadata(self, key: impl Into<String>, value: Value) -> Self

Adds metadata.

pub fn validate(&self, expected_fqn: &str) -> Result<(), SnapshotError>

Validates that this snapshot matches the expected component.

Errors

Returns an error if the FQN or version doesn’t match.

pub fn is_empty(&self) -> bool

Returns true if the state is empty/null.

Trait Implementations

impl Clone for ComponentSnapshot

fn clone(&self) -> ComponentSnapshot

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for ComponentSnapshot

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

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for ComponentSnapshot

fn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error>

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Serialize for ComponentSnapshot

fn serialize<__S>(&self, __serializer: __S) -> Result<__S::Ok, __S::Error>

where __S: Serializer,

Serialize this value into the given Serde serializer.