Struct frugalos_raft::LocalNodeId

pub struct LocalNodeId(_);

Serviceローカルな7バイト長のID.

このIDは、一つのService内で一意である必要がある.

また、複数ノードが同じDeviceHandleを共有する場合には、 それぞれのIDは異なるものである必要がある (これが守られない場合には、名前空間が衝突し、データが破損してしまう危険性がある).

Examples

16進文字列との相互変換.

use frugalos_raft::LocalNodeId;

let id = LocalNodeId::new([0, 11, 222, 3, 44, 5, 66]);
assert_eq!(id.to_string(), "bde032c0542");
assert_eq!("bde032c0542".parse::<LocalNodeId>().unwrap(), id);

Implementations

impl LocalNodeId

pub fn new(id: [u8; 7]) -> Self

新しいLocalNodeIdインスタンスを生成する.

pub fn as_slice(&self) -> &[u8]

IDをスライス形式に変換して返す.

pub fn to_ballot_lump_id(self) -> LumpId

Ballot用のLumpIdを返す.

LumpIdのレイアウト (Erlang表記)

<<LocalNodeId:56, (Type=0):8, 0:64>>

Examples

use frugalos_raft::LocalNodeId;

assert_eq!(LocalNodeId::new([1; 7]).to_ballot_lump_id().as_ref(),
           [1, 1, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0]);

pub fn to_log_entry_lump_id(self, index: LogIndex) -> LumpId

指定されたインデックスのログエントリ用のLumpIdを返す.

LumpIdのレイアウト (Erlang表記)

<<LocalNodeId:56, (Type=1):8, Index:64>>

Examples

use frugalos_raft::LocalNodeId;

assert_eq!(LocalNodeId::new([2; 7]).to_log_entry_lump_id(3.into()).as_ref(),
           [2, 2, 2, 2, 2, 2, 2, 1, 0, 0, 0, 0, 0, 0, 0, 3]);

pub fn to_log_prefix_index_lump_id(self) -> LumpId

LogPrefixの格納場所を保持するためのLumpIdを返す.

LumpIdのレイアウト (Erlang表記)

<<LocalNodeId:56, (Type=2):8, 0:64>>

Examples

use frugalos_raft::LocalNodeId;

assert_eq!(LocalNodeId::new([1; 7]).to_log_prefix_index_lump_id().as_ref(),
           [1, 1, 1, 1, 1, 1, 1, 2, 0, 0, 0, 0, 0, 0, 0, 0]);

pub fn to_log_prefix_lump_id(self, index: u64) -> LumpId

指定された位置に保存されるLogPrefix用のLumpIdを返す.

LumpIdのレイアウト (Erlang表記)

<<LocalNodeId:56, (Type=3):8, Index:64>>

Examples

use frugalos_raft::LocalNodeId;

assert_eq!(LocalNodeId::new([1; 7]).to_log_prefix_lump_id(4).as_ref(),
           [1, 1, 1, 1, 1, 1, 1, 3, 0, 0, 0, 0, 0, 0, 0, 4]);

pub fn to_available_lump_id_range(self) -> Range<LumpId>

このノードが取り得る LumpId の範囲を返す.

Examples

use frugalos_raft::LocalNodeId;

let mut id = [0; 7];
id[6] = 1;
let range = LocalNodeId::new(id).to_available_lump_id_range();
assert_eq!(range.start.as_u128(), 4722366482869645213696);
assert_eq!(range.end.as_u128(), 9444732965739290427392);
assert_eq!(range.end.as_u128() / range.start.as_u128(), 2);

Trait Implementations

impl Clone for LocalNodeId

pub fn clone(&self) -> LocalNodeId

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Copy for LocalNodeId

impl Debug for LocalNodeId

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

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for LocalNodeId

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

Deserialize this value from the given Serde deserializer.

impl Display for LocalNodeId

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

Formats the value using the given formatter.

impl Eq for LocalNodeId

impl FromStr for LocalNodeId

type Err = Error

The associated error which can be returned from parsing.

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

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

impl Hash for LocalNodeId

pub fn hash<__H: Hasher>(&self, state: &mut __H)

Feeds this value into the given Hasher.

pub fn hash_slice<H>(data: &[Self], state: &mut H) where
    H: Hasher, 

Feeds a slice of this type into the given Hasher.

impl Ord for LocalNodeId

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

This method returns an Ordering between self and other.

#[must_use]pub fn max(self, other: Self) -> Self

Compares and returns the maximum of two values.

#[must_use]pub fn min(self, other: Self) -> Self

Compares and returns the minimum of two values.

#[must_use]pub fn clamp(self, min: Self, max: Self) -> Self

🔬 This is a nightly-only experimental API. (clamp)

Restrict a value to a certain interval.

impl PartialEq<LocalNodeId> for LocalNodeId

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

This method tests for self and other values to be equal, and is used by ==.

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

This method tests for !=.

impl PartialOrd<LocalNodeId> for LocalNodeId

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

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

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

This method tests less than (for self and other) and is used by the < operator.

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

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

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

This method tests greater than (for self and other) and is used by the > operator.

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

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

impl Serialize for LocalNodeId

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

Serialize this value into the given Serde serializer.

impl StructuralEq for LocalNodeId

impl StructuralPartialEq for LocalNodeId