Module sc_client_api::backend

Substrate Client data backend

Structs

• ClientImportOperation
  Import operation wrapper.
• FinalizeSummary
  Finalization operation summary.
• ImportSummary
  Import operation summary.
• KeyValueStates
  Multiple key value state. States are ordered by root storage key.
• KeysIter
  An Iterator that iterates keys in a given block under a prefix.
• PairsIter
  An Iterator that iterates keys and values in a given block under a prefix.

Enums

• ImportNotificationAction
  Describes which block import notification stream should be notified.
• MerkleValue
  Either the hash or value of a node depending on its size.
• NewBlockState
  State of a new block.

Traits

• AuxStore
  Provides access to an auxiliary database.
• Backend
  Client backend.
• BlockImportOperation
  Block insertion operation.
• Finalizer
  Finalize Facilities
• LocalBackend
  Mark for all Backend implementations, that are making use of state data, stored locally.
• LockImportRun
  Interface for performing operations on the backend.
• StateBackend
  A state backend is used to read state data and can have changes committed to it.
• StorageProvider
  Provides access to storage primitives

Functions

• apply_aux
  Helper function to apply auxiliary data insertion into an operation.

Type Aliases

• BackendTransaction
  The transaction type used by Backend.
• StateBackendFor
  Extracts the state backend type for the given backend.