Struct FileCoordinationStore 

pub struct FileCoordinationStore { /* private fields */ }

Durable single-control-plane coordination schema store.

The file provider certifies schema ownership and crash-consistent metadata for deployments in which one control-plane service owns the data directory. Runtime nodes never receive database credentials through this contract.

Implementations

impl FileCoordinationStore

pub fn open(root: impl Into<PathBuf>) -> ProviderResult<Self>

Opens a store, creating or transactionally migrating metadata to V2.

pub fn root(&self) -> &Path

Returns the deployment-owned data directory.

pub fn backup_to(&self, destination: impl AsRef<Path>) -> ProviderResult<()>

Writes a validated metadata backup using atomic replacement.

pub fn restore_from(&self, source: impl AsRef<Path>) -> ProviderResult<()>

Restores validated metadata and reruns forward-only migrations.

Trait Implementations

impl CoordinationStoreProvider for FileCoordinationStore

fn schema_version(&self) -> ProviderResult<u64>

Returns the latest migration version applied by the provider.

fn health(&self) -> ProviderResult<()>

Verifies backend connectivity and schema access.

fn ensure_compatible(&self) -> ProviderResult<()>

Rejects stores that do not implement the schema required by this Runtime.

impl Debug for FileCoordinationStore

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

Formats the value using the given formatter.