Trait ethcore::snapshot::SnapshotService

pub trait SnapshotService: Sync + Send {
    fn manifest(&self) -> Option<ManifestData>;
    fn manifest_block(&self) -> Option<(u64, H256)>;
    fn supported_versions(&self) -> Option<(u64, u64)>;
    fn completed_chunks(&self) -> Option<Vec<H256>>;
    fn chunk(&self, hash: H256) -> Option<Bytes>;
    fn restoration_status(&self) -> RestorationStatus;
    fn creation_status(&self) -> CreationStatus;
    fn begin_restore(&self, manifest: ManifestData);
    fn abort_restore(&self);
    fn restore_state_chunk(&self, hash: H256, chunk: Bytes);
    fn restore_block_chunk(&self, hash: H256, chunk: Bytes);
    fn abort_snapshot(&self);
    fn shutdown(&self);
}

The interface for a snapshot network service. This handles:

• restoration of snapshots to temporary databases.
• responding to queries for snapshot manifests and chunks

Required methods

fn manifest(&self) -> Option<ManifestData>

Query the most recent manifest data.

fn manifest_block(&self) -> Option<(u64, H256)>

Query the most recent snapshoted block number and hash.

fn supported_versions(&self) -> Option<(u64, u64)>

Get the supported range of snapshot version numbers. None indicates warp sync isn’t supported by the consensus engine.

fn completed_chunks(&self) -> Option<Vec<H256>>

Returns a list of the completed chunks

fn chunk(&self, hash: H256) -> Option<Bytes>

Get raw chunk for a given hash.

fn restoration_status(&self) -> RestorationStatus

Ask the snapshot service for the restoration status.

fn creation_status(&self) -> CreationStatus

Ask the snapshot service for the creation status.

fn begin_restore(&self, manifest: ManifestData)

Begin snapshot restoration. If restoration in-progress, this will reset it. From this point on, any previous snapshot may become unavailable.

fn abort_restore(&self)

Abort an in-progress restoration if there is one.

fn restore_state_chunk(&self, hash: H256, chunk: Bytes)

Feed a raw state chunk to the service to be processed asynchronously. no-op if not currently restoring.

fn restore_block_chunk(&self, hash: H256, chunk: Bytes)

Feed a raw block chunk to the service to be processed asynchronously. no-op if currently restoring.

fn abort_snapshot(&self)

Abort in-progress snapshotting if there is one.

fn shutdown(&self)

Shutdown the Snapshot Service by aborting any ongoing restore

Implementors

impl SnapshotService for Service