Documentation
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Overview ¶
Package das contains the most important functionality provided by celestia-node. It contains logic for running data availability sampling (DAS) routines on block headers in the network. DAS is the process of verifying the availability of block data by sampling chunks or shares of those blocks.
Package das can confirm the availability of block data in the network via the Availability interface which is implemented both in `full` and `light` mode. `Full` availability ensures the full reparation of a block's data square (meaning the instance will sample for enough shares to be able to fully repair the block's data square) while `light` availability samples for shares randomly until it is sufficiently likely that all block data is available as it is assumed that there are enough `light` availability instances active on the network doing sampling over the same block to collectively verify its availability.
The central component of this package is the `DASer`. It performs one basic function: a sampling loop that performs DAS on new ExtendedHeaders in the network. The DASer kicks off this loop by loading its last DASed header (`checkpoint`) and kicking off a `catchUp` loop to DAS all headers between the checkpoint and the current network head. It simultaneously continues to perform DAS over new ExtendedHeaders received via gossipsub.
Index ¶
Constants ¶
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Functions ¶
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Types ¶
type DASer ¶
type DASer struct {
// contains filtered or unexported fields
}
DASer continuously validates availability of data committed to headers.
func NewDASer ¶
func NewDASer( da share.Availability, hsub header.Subscriber, getter header.Getter, cstore datastore.Datastore, bcast fraud.Broadcaster, ) *DASer
NewDASer creates a new DASer.
Source Files