Crate pallet_on_demand_para 

On-demand Coretime pallet

Sale of on-demand Coretime from the Coretime chain.

The Relay chain owns the actual on-demand order queue; this pallet is a front-end for it which lives alongside pallet-broker on the Coretime chain:

• Users call Pallet::place_order here and pay the spot price in the local currency.

• Because the real queue is one hop away, the spot price cannot be read directly. Instead the pallet keeps a local estimate of the queue’s depth (QueueState) which grows with every order placed and shrinks by an assumed drain rate per Relay-chain block. The spot price is derived from that estimate using PriceParameters.

• Orders accepted within a block are accumulated in PendingBatch and forwarded to the Relay chain in one go on finalization, via QueueOnDemandOrders.

  NOTE: It is important to make sure that this pallet is ordered before ParachainSystem in the runtime - otherwise the messages will not be sent in the block in which they are created, introducing additional latency.

Re-exports

pub use weights::WeightInfo;

pub use pallet::*;

Modules

pallet

The pallet module in each FRAME pallet hosts the most important items needed to construct this pallet.

weights

Autogenerated weights for pallet_on_demand_para

Structs

DefaultPricingProvider

A type implementing the default algorithm for determining the order price.

EnqueuedOrder

Data about a placed on-demand order.

PriceParameters

The parameters used for pricing on-demand orders.

QueueTracker

The locally tracked, estimated state of the Relay chain’s on-demand order queue.

Traits

PoolCapacityProvider

Type for getting information about the on-demand pool capacity.

PricingProvider

Type for determining the prices of on-demand orders

QueueOnDemandOrders

Instructs the Relay chain to enqueue a batch of on-demand orders.

WeightInfoExt

Type Aliases

BalanceOf

PriceParametersOf

QueueTrackerOf

RelayBlockNumberOf

The Relay-chain block number, as seen by this pallet.