Trait EraFileId 

pub trait EraFileId: Clone {
    const FILE_TYPE: EraFileType;
    const ITEMS_PER_ERA: u64;

    // Required methods
    fn network_name(&self) -> &str;
    fn start_number(&self) -> u64;
    fn count(&self) -> u32;
    fn hash(&self) -> Option<[u8; 4]>;
    fn include_era_count(&self) -> bool;

    // Provided methods
    fn era_number(&self) -> u64 { ... }
    fn era_count(&self) -> u64 { ... }
    fn to_file_name(&self) -> String { ... }
}

Era file identifiers

Required Associated Constants

const FILE_TYPE: EraFileType

File type for this identifier

const ITEMS_PER_ERA: u64

Number of items, slots for era, blocks for era1, per era

Required Methods

fn network_name(&self) -> &str

Get the network name

fn start_number(&self) -> u64

Get the starting number (block or slot)

fn count(&self) -> u32

Get the count of items

fn hash(&self) -> Option<[u8; 4]>

Get the optional hash identifier

fn include_era_count(&self) -> bool

Whether to include era count in filename

Provided Methods

fn era_number(&self) -> u64

Calculate era number

fn era_count(&self) -> u64

Calculate the number of eras spanned per file.

If the user can decide how many slots/blocks per era file there are, we need to calculate it. Most of the time it should be 1, but it can never be more than 2 eras per file as there is a maximum of 8192 slots/blocks per era file.

fn to_file_name(&self) -> String

Convert to standardized file name.

Dyn Compatibility

This trait is not dyn compatible.

In older versions of Rust, dyn compatibility was called "object safety".

Implementors

impl EraFileId for Era1Id

const FILE_TYPE: EraFileType = EraFileType::Era1

const ITEMS_PER_ERA: u64

impl EraFileId for EraId

const FILE_TYPE: EraFileType = EraFileType::Era

const ITEMS_PER_ERA: u64 = SLOTS_PER_HISTORICAL_ROOT