NewReactor returns a reference to a new state sync reactor, which implements the service.Service interface.

ChunkChannel exchanges chunk contents.

LightBlockChannel exchanges light blocks.

MetricsSubsystem is a subsystem shared by all metrics exposed by this package.

ParamsChannel exchanges consensus params.

SnapshotChannel exchanges snapshot metadata.

Metrics contains metrics exposed by this package.

Reactor handles state sync, both restoring snapshots for the local node and serving snapshots for other nodes.

Metricer defines an interface used for the rpc sync info query, please see statesync.metrics for the details.