Crate cumulus_primitives_core

Cumulus related core primitive types and traits.

Modules

• opaque
• relay_chain
  A module that re-exports relevant relay chain definitions.

Structs

• AbridgedHostConfiguration
  Abridged version of HostConfiguration (from the Configuration parachains host runtime module) meant to be used by a parachain or PDK such as cumulus.
• AbridgedHrmpChannel
  Abridged version of HrmpChannel (from the Hrmp parachains host runtime module) meant to be used by a parachain or PDK such as cumulus.
• Ancestor
  A unit struct which can be converted into a Location of the inner parents value.
• AncestorThen
  A unit struct which can be converted into a Location of the inner parents value and the inner interior.
• Asset
  Either an amount of a single fungible asset, or a single well-identified non-fungible asset.
• AssetId
  Location to identify an asset.
• Assets
  A Vec of Assets.
• ChannelInfo
  Information about an XCMP channel.
• ClaimQueueOffset
  An offset in the relay chain claim queue.
• CollationInfo
  Information about a collation.
• CollationInfoV1
  Information about a collation.
• CoreSelector
  A strictly increasing sequence number, typically this would be the least significant byte of the block number.
• Digest
  Generic header digest.
• HintNumVariants
• InboundDownwardMessage
  A wrapped version of DownwardMessage. The difference is that it has attached the block number when the message was sent.
• Location
  A relative path between state-bearing consensus systems.
• PalletInfo
• ParaId
  Unique identifier of a parachain.
• ParachainBlockData
  The parachain block that is created by a collator.
• Parent
  A unit struct which can be converted into a Location of parents value 1.
• ParentThen
  A tuple struct which can be converted into a Location of parents value 1 with the inner interior.
• PersistedValidationData
  The validation data provides information about how to create the inputs for validation of a candidate. This information is derived from the chain state and will vary from para to para, although some fields may be the same for every para.
• QueryResponseInfo
  Information regarding the composition of a query response.
• ValidationParams
  Validation parameters for evaluating the parachain validity function.
• Weight
• Xcm
• XcmContext
  Contextual data pertaining to a specific list of XCM instructions.

Enums

• AggregateMessageOrigin
  The origin of an inbound message.
• AssetFilter
  Asset collection, defined either by a number of Assets or a single wildcard.
• AssetInstance
  A general identifier for an instance of a non-fungible asset class.
• BodyId
  An identifier of a pluralistic body.
• BodyPart
  A part of a pluralistic body.
• ChannelStatus
  The status of a channel.
• CumulusDigestItem
  Consensus header digests for Cumulus parachains.
• DigestItem
  Digest item that is able to encode/decode ‘system’ digest items and provide opaque access to other items.
• Fungibility
  Classification of whether an asset is fungible or not, along with a mandatory amount or instance.
• Hint
• Instruction
  Cross-Consensus Message: A message from one consensus system to another.
• Junction
  A single item in a path to describe the relative location of a consensus system.
• Junctions
  Non-parent junctions that can be constructed, up to the length of 8. This specific Junctions implementation uses a Rust enum in order to make pattern matching easier.
• MaybeErrorCode
• MessageSendError
  Error description of a message send failure.
• NetworkId
  A global identifier of a data structure existing within consensus.
• OriginKind
  Basically just the XCM (more general) version of ParachainDispatchOrigin.
• Outcome
  Outcome of an XCM execution.
• Response
  Response data to a query.
• SendError
  Error result value when attempting to send an XCM message.
• ServiceQuality
  The “quality of service” considerations for message sending.
• WeightLimit
  An optional weight limit.
• WildAsset
  A wildcard representing a set of assets.
• WildFungibility
  Classification of whether an asset is fungible or not.
• XcmError
  Error codes used in XCM. The first errors codes have explicit indices and are part of the XCM format. Those trailing are merely part of the XCM implementation; there is no expectation that they will retain the same index over time.
• XcmpMessageFormat
  The aggregate XCMP message format.

Constants

• CUMULUS_CONSENSUS_ID
  A consensus engine ID indicating that this is a Cumulus Parachain.
• XCM_VERSION

Traits

• BlockT
  Something which fulfills the abstract idea of a Substrate block. It has types for Extrinsic pieces of information as well as a Header.
• CollectCollationInfo
  Runtime api to collect information about a collation.
• DmpMessageHandler
  Something that should be called when a downward message is received.
• ExecuteXcm
  Type of XCM message executor.
• GetChannelInfo
• GetCoreSelectorApi
  Runtime api used to select the core for which the next block will be built.
• IsSystem
  Determine if a parachain is a system parachain or not.
• ListChannelInfos
  List all open outgoing channels.
• PreparedMessage
• Reanchorable
• SendXcm
  Utility for sending an XCM message to a given location.
• UpwardMessageSender
  Something that should be called when sending an upward message.
• XcmWeightInfo
• XcmpMessageHandler
  Something that should be called for each batch of messages received over XCMP.
• XcmpMessageSource
  A means of figuring out what outbound XCMP messages should be being sent.

Functions

• extract_relay_parent
  Extract the relay-parent from the provided header digest. Returns None if none were found.
• send_xcm
  Convenience function for using a SendXcm implementation. Just interprets the dest and wraps both in Some before passing them as mutable references into T::send_xcm.
• validate_send
  Convenience function for using a SendXcm implementation. Just interprets the dest and wraps both in Some before passing them as mutable references into T::send_xcm.

Type Aliases

• ConsensusEngineId
  Consensus engine unique ID.
• InboundHrmpMessage
  An inbound HRMP message.
• InteriorLocation
  A relative location which is constrained to be an interior location of the context.
• OutboundHrmpMessage
  And outbound HRMP message
• QueryId
  An identifier for a query.
• SendResult
  Result value when attempting to send an XCM message.
• UpwardMessage
  A message from a parachain to its Relay Chain.
• XcmHash
  A hash type for identifying messages.
• XcmResult