Enum StorageTier 

pub enum StorageTier {
    T1,
    T2,
    T3,
    T4,
    T5,
}

A fixed storage tier for a Pouch service.

Tiers are ordered: T1 < T2 < T3 < T4 < T5. A Pouch at tier T participates in fragment placement for all tiers ≤ T (e.g. a T3 Pouch stores fragments from T1, T2, and T3 files).

Variants

T1

10 GiB — “Pebble”

T2

100 GiB — “Stone”

T3

500 GiB — “Boulder”

T4

1 TiB — “Rock”

T5

5 TiB — “Monolith”

Implementations

impl StorageTier

pub fn quota_bytes(self) -> u64

Return the exact quota in bytes for this tier.

pub fn name(self) -> &'static str

Human-readable name for this tier.

pub fn participating_tiers(self) -> &'static [StorageTier]

Return all tiers from T1 up to and including self.

Used to determine which tier-buckets a Pouch participates in.

pub fn all() -> &'static [StorageTier]

Return all defined tiers in ascending order.

pub fn parse(s: &str) -> BpResult<Self>

Parse a tier from a string like "T1", "t2", "T3", etc.

pub fn for_file_size(bytes: u64) -> Option<Self>

Return the minimum tier that can hold a file of the given byte size.

Returns None if the file is too large even for T5.

Trait Implementations

impl Clone for StorageTier

fn clone(&self) -> StorageTier

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for StorageTier

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

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for StorageTier

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

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Display for StorageTier

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

Formats the value using the given formatter.

impl FromStr for StorageTier

type Err = BpError

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 Ord for StorageTier

fn cmp(&self, other: &StorageTier) -> Ordering

This method returns an Ordering between self and other.

fn max(self, other: Self) -> Self

where Self: Sized,

Compares and returns the maximum of two values.

fn min(self, other: Self) -> Self

where Self: Sized,

Compares and returns the minimum of two values.

fn clamp(self, min: Self, max: Self) -> Self

where Self: Sized,

Restrict a value to a certain interval.

impl PartialEq for StorageTier

fn eq(&self, other: &StorageTier) -> 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 PartialOrd for StorageTier

fn partial_cmp(&self, other: &StorageTier) -> Option<Ordering>

This method returns an ordering between self and other values if one exists.

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

Tests less than (for self and other) and is used by the < operator.

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

Tests less than or equal to (for self and other) and is used by the <= operator.

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

Tests greater than (for self and other) and is used by the > operator.

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

Tests greater than or equal to (for self and other) and is used by the >= operator.

impl Serialize for StorageTier

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

where __S: Serializer,

Serialize this value into the given Serde serializer.

impl Copy for StorageTier

impl Eq for StorageTier

impl StructuralPartialEq for StorageTier