Struct 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>, proposer: AccountAddress, ) -> Self

pub fn id(&self) -> HashValue

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

pub fn timestamp_usec(&self) -> u64

pub fn proposer(&self) -> AccountAddress

pub fn previous_block_votes(&self) -> &Vec<AccountAddress>

pub fn round(&self) -> u64

Trait Implementations

impl Clone for BlockMetadata

fn clone(&self) -> BlockMetadata

Returns a duplicate 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

Formats the value using the given formatter.

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

fn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error>

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Eq for BlockMetadata

impl PartialEq for BlockMetadata

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

Equality operator ==.

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

Inequality operator !=.

impl Serialize for BlockMetadata

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

where __S: Serializer,

Serialize this value into the given Serde serializer.

impl StructuralPartialEq for BlockMetadata