Module offchain

A collection of higher lever helpers for offchain calls.

Modules

• http
  A high-level helpers for making HTTP requests from Offchain Workers.
• storage
  A set of storage helpers for offchain workers.
• storage_lock
  Off-chain Storage Lock
• testing
  Utilities for offchain calls testing.

Structs

• Capabilities
  Execution context extra capabilities.
• Duration
  Duration type
• HttpRequestId
  Opaque type for offchain http requests.
• KeyTypeId
  An identifier for a type of cryptographic key.
• LimitedExternalities
  An *Externalities implementation with limited capabilities.
• OffchainDbExt
  The offchain database extension that will be registered at the Substrate externalities.
• OffchainWorkerExt
  The offchain worker extension that will be registered at the Substrate externalities.
• OpaqueMultiaddr
  Simple blob to hold a Multiaddr without committing to its format.
• OpaqueNetworkState
  A blob to hold information about the local node’s network state without committing to its format.
• Timestamp
  Opaque timestamp type
• TransactionPoolExt
  An externalities extension to submit transactions to the pool.

Enums

• HttpError
  An error enum returned by some http methods.
• HttpRequestStatus
  Status of the HTTP request
• OffchainOverlayedChange
  Change to be applied to the offchain worker db in regards to a key.
• StorageKind
  A type of supported crypto.

Constants

• STORAGE_PREFIX
  Persistent storage prefix used by the Offchain Worker API when creating a DB key.

Traits

• DbExternalities
  A externalities extension for accessing the Offchain DB.
• Externalities
  An extended externalities for offchain workers.
• OffchainStorage
  Offchain DB persistent (non-fork-aware) storage.
• TransactionPool
  Abstraction over transaction pool.