Enum BlockIdentifier 

pub enum BlockIdentifier {
    Best,
    LastFinal,
    Given(BlockHash),
    AbsoluteHeight(AbsoluteBlockHeight),
    RelativeHeight(RelativeBlockHeight),
}

A block identifier used in queries.

Variants

Best

Query in the context of the best block.

LastFinal

Query in the context of the last finalized block at the time of the query.

Given(BlockHash)

Query in the context of a specific block hash.

AbsoluteHeight(AbsoluteBlockHeight)

Query for a block at absolute height. If a unique block can not be identified at that height the query will return NotFound.

RelativeHeight(RelativeBlockHeight)

Query for a block at a height relative to genesis index. If a unique block can not be identified at that height the query will return NotFound.

Trait Implementations

impl Clone for BlockIdentifier

fn clone(&self) -> BlockIdentifier

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for BlockIdentifier

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

Formats the value using the given formatter.

impl Display for BlockIdentifier

Display implementation to match the FromStr implementation defined just below.

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

Formats the value using the given formatter.

impl From<&BlockIdentifier> for BlockHashInput

fn from(bi: &BlockIdentifier) -> Self

Converts to this type from the input type.

impl From<AbsoluteBlockHeight> for BlockIdentifier

fn from(original: AbsoluteBlockHeight) -> BlockIdentifier

Converts to this type from the input type.

impl From<BlockIdentifier> for EpochIdentifier

fn from(original: BlockIdentifier) -> EpochIdentifier

Converts to this type from the input type.

impl From<RelativeBlockHeight> for BlockIdentifier

fn from(original: RelativeBlockHeight) -> BlockIdentifier

Converts to this type from the input type.

impl FromStr for BlockIdentifier

Parse a string as a BlockIdentifier. The format is one of the following

• the string best for Best
• the string lastFinal or lastfinal for LastFinal
• a valid block hash for Given
• a string starting with @ followed by an integer and nothing else for AbsoluteHeight
• a string in the format @123/3 optionally followed by ! where 123 is the block height and 3 is the genesis index for RelativeHeight. If ! is present then restrict is set to true.

type Err = BlockIdentifierFromStrError

The associated error which can be returned from parsing.

fn from_str(s: &str) -> Result<Self, Self::Err>

Parses a string s to return a value of this type.

impl IntoBlockIdentifier for BlockIdentifier

fn into_block_identifier(self) -> BlockIdentifier

impl IntoRequest<BlockHashInput> for &BlockIdentifier

fn into_request(self) -> Request<BlockHashInput>

Wrap the input message T in a tonic::Request

impl PartialEq for BlockIdentifier

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

Tests for self and other values to be equal, and is used by ==.

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

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

impl Copy for BlockIdentifier

impl Eq for BlockIdentifier

impl StructuralPartialEq for BlockIdentifier