Struct diem_sdk::types::block_metadata::BlockMetadata

pub struct BlockMetadata { /* private fields */ }

Struct that will be persisted on chain to store the information of the current block.

The flow will look like following:

1. The executor will pass this struct to VM at the end of a block proposal.
2. The VM will use this struct to create a special system transaction that will emit an event represents the information of the current block. This transaction can’t be emitted by regular users and is generated by each of the validators on the fly. Such transaction will be executed before all of the user-submitted transactions in the blocks.
3. Once that special resource is modified, the other user transactions can read the consensus info by calling into the read method of that resource, which would thus give users the information such as the current leader.

Implementations

impl BlockMetadata

pub fn new( id: HashValue, round: u64, timestamp_usecs: u64, previous_block_votes: Vec<AccountAddress, Global>, proposer: AccountAddress ) -> BlockMetadata

pub fn id(&self) -> HashValue

pub fn into_inner( self ) -> (u64, u64, Vec<AccountAddress, Global>, AccountAddress)

pub fn timestamp_usec(&self) -> u64

pub fn proposer(&self) -> AccountAddress

Trait Implementations

impl Arbitrary for BlockMetadata

type Parameters = SizeRange

The type of parameters that arbitrary_with accepts for configuration of the generated Strategy. Parameters must implement Default.

fn arbitrary_with( num_validators_range: <BlockMetadata as Arbitrary>::Parameters ) -> <BlockMetadata as Arbitrary>::Strategy

Generates a Strategy for producing arbitrary values of type the implementing type (Self). The strategy is passed the arguments given in args.

type Strategy = BoxedStrategy<BlockMetadata>

The type of Strategy used to generate values of type Self.

fn arbitrary() -> Self::Strategy

Generates a Strategy for producing arbitrary values of type the implementing type (Self).

impl Clone for BlockMetadata

fn clone(&self) -> BlockMetadata

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for BlockMetadata

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

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for BlockMetadata

fn deserialize<__D>( __deserializer: __D ) -> Result<BlockMetadata, <__D as Deserializer<'de>>::Error>where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl PartialEq<BlockMetadata> for BlockMetadata

fn eq(&self, other: &BlockMetadata) -> 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 Serialize for BlockMetadata

fn serialize<__S>( &self, __serializer: __S ) -> Result<<__S as Serializer>::Ok, <__S as Serializer>::Error>where __S: Serializer,

Serialize this value into the given Serde serializer.

impl Eq for BlockMetadata

impl StructuralEq for BlockMetadata

impl StructuralPartialEq for BlockMetadata