Crate polkadot_node_subsystem_types

Subsystem trait definitions and message types.

Node-side logic for Polkadot is mostly comprised of Subsystems, which are discrete components that communicate via message-passing. They are coordinated by an overseer, provided by a separate crate.

Modules

errors

Error types for the subsystem requests.

messages

Message types for the overseer and subsystems.

Structs

ActivatedLeaf

Activated leaf.

ActiveLeavesUpdate

Changes in the set of active leaves: the parachain heads which we care to work on.

DefaultSubsystemClient

Default implementation of RuntimeApiSubsystemClient using the client.

Enums

OverseerSignal

Signals sent by an overseer to a subsystem.

Traits

ChainApiBackend

Offers header utilities.

RuntimeApiSubsystemClient

Exposes all runtime calls that are used by the runtime API subsystem.

Type Aliases

Block

Block type.

BlockNumber

The block number type used by Polkadot. 32-bits will allow for 136 years of blocks assuming 1 block per second.

Hash

A hash of some data used by the relay chain.

UnpinHandle

Keeps the state of a specific block pinned in memory while the handle is alive.