Trait ethcore::snapshot::SnapshotService [−] [src]

pub trait SnapshotService: Sync + Send {
    fn manifest(&self) -> Option<ManifestData>;
    fn supported_versions(&self) -> Option<(u64, u64)>;
    fn completed_chunks(&self) -> Option<Vec<H256>>;
    fn chunk(&self, hash: H256) -> Option<Bytes>;
    fn status(&self) -> RestorationStatus;
    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 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 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 status(&self) -> RestorationStatus`

Ask the snapshot service for the restoration 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 shutdown(&self)`

Shutdown the Snapshot Service by aborting any ongoing restore

Implementors

impl SnapshotService for Service
[src]