Enum cumulus_primitives_core::relay_chain::UpgradeGoAhead

pub enum UpgradeGoAhead {
    Abort,
    GoAhead,
}

A struct that the relay-chain communicates to a parachain indicating what course of action the parachain should take in the coordinated parachain validation code upgrade process.

This data type appears in the last step of the upgrade process. After the parachain observes it and reacts to it the upgrade process concludes.

Variants

Abort

Abort the upgrade process. There is something wrong with the validation code previously submitted by the parachain. This variant can also be used to prevent upgrades by the governance should an emergency emerge.

The expected reaction on this variant is that the parachain will admit this message and remove all the data about the pending upgrade. Depending on the nature of the problem (to be examined offchain for now), it can try to send another validation code or just retry later.

GoAhead

Apply the pending code change. The parablock that is built on a relay-parent that is descendant of the relay-parent where the parachain observed this signal must use the upgraded validation code.

Trait Implementations

impl Clone for UpgradeGoAhead

fn clone(&self) -> UpgradeGoAhead

Returns a copy of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for UpgradeGoAhead

fn fmt(&self, fmt: &mut Formatter<'_>) -> Result<(), Error>

Formats the value using the given formatter.

impl Decode for UpgradeGoAhead

fn decode<__CodecInputEdqy>( __codec_input_edqy: &mut __CodecInputEdqy, ) -> Result<UpgradeGoAhead, Error>

where __CodecInputEdqy: Input,

Attempt to deserialise the value from input.

fn decode_into<I>( input: &mut I, dst: &mut MaybeUninit<Self>, ) -> Result<DecodeFinished, Error>

where I: Input,

Attempt to deserialize the value from input into a pre-allocated piece of memory.

fn skip<I>(input: &mut I) -> Result<(), Error>

where I: Input,

Attempt to skip the encoded value from input.

fn encoded_fixed_size() -> Option<usize>

Returns the fixed encoded size of the type.

impl Encode for UpgradeGoAhead

fn size_hint(&self) -> usize

If possible give a hint of expected size of the encoding.

fn encode_to<__CodecOutputEdqy>( &self, __codec_dest_edqy: &mut __CodecOutputEdqy, )

where __CodecOutputEdqy: Output + ?Sized,

Convert self to a slice and append it to the destination.

fn encode(&self) -> Vec<u8>

Convert self to an owned vector.

fn using_encoded<R, F>(&self, f: F) -> R

where F: FnOnce(&[u8]) -> R,

Convert self to a slice and then invoke the given closure with it.

fn encoded_size(&self) -> usize

Calculates the encoded size.

impl PartialEq for UpgradeGoAhead

fn eq(&self, other: &UpgradeGoAhead) -> bool

This method tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

This method tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl TypeInfo for UpgradeGoAhead

type Identity = UpgradeGoAhead

The type identifying for which type info is provided.

fn type_info() -> Type

Returns the static type identifier for Self.

impl Copy for UpgradeGoAhead

impl EncodeLike for UpgradeGoAhead

impl StructuralPartialEq for UpgradeGoAhead