Module polkadot_runtime_parachains::hrmp::pallet

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

The main components of this pallet are:

• Pallet, which implements all of the dispatchable extrinsics of the pallet, among other public functions.
  • The subset of the functions that are dispatchable can be identified either in the dispatchables module or in the Call enum.
• storage_types, which contains the list of all types that are representing a storage item. Otherwise, all storage items are listed among Type Definitions.
• Config, which contains the configuration trait of this pallet.
• Event and Error, which are listed among the Enums.

Modules

• dispatchables
  Auto-generated docs-only module listing all defined dispatchables for this pallet.
• storage_types
  Auto-generated docs-only module listing all (public and private) defined storage types for this pallet.

Structs

• GenesisConfig
  Preopen the given HRMP channels.
• Pallet
  The Pallet struct, the main type that implements traits and standalone functions within the pallet.

Enums

• Call
  Contains a variant per dispatchable extrinsic that this pallet has.
• Error
  The Error enum of this pallet.
• Event
  The Event enum of this pallet

Traits

• Config
  Configuration trait of this pallet.

Type Definitions

• HrmpAcceptedChannelRequestCount
  This mapping tracks how many open channel requests were accepted by a given recipient para. Invariant: HrmpOpenChannelRequests should contain the same number of items (_, X) with confirmed set to true, as the number of HrmpAcceptedChannelRequestCount for X.
• HrmpChannelContents
  Storage for the messages for each channel. Invariant: cannot be non-empty if the corresponding channel in HrmpChannels is None.
• HrmpChannelDigests
  Maintains a mapping that can be used to answer the question: What paras sent a message at the given block number for a given receiver. Invariants:
• HrmpChannels
  HRMP channel data associated with each para. Invariant:
• HrmpCloseChannelRequests
  A set of pending HRMP close channel requests that are going to be closed during the session change. Used for checking if a given channel is registered for closure.
• HrmpCloseChannelRequestsList
  Storage type is [StorageValue] with value type Vec < HrmpChannelId >.
• HrmpEgressChannelsIndex
  Storage type is [StorageMap] with key type ParaId and value type Vec < ParaId >.
• HrmpIngressChannelsIndex
  Ingress/egress indexes allow to find all the senders and receivers given the opposite side. I.e.
• HrmpOpenChannelRequestCount
  This mapping tracks how many open channel requests are initiated by a given sender para. Invariant: HrmpOpenChannelRequests should contain the same number of items that has (X, _) as the number of HrmpOpenChannelRequestCount for X.
• HrmpOpenChannelRequests
  The set of pending HRMP open channel requests.
• HrmpOpenChannelRequestsList
  Storage type is [StorageValue] with value type Vec < HrmpChannelId >.
• HrmpWatermarks
  The HRMP watermark associated with each para. Invariant:
• ModuleDeprecated
  Type alias to Pallet, to be used by construct_runtime.