Struct Group 

#[non_exhaustive]
pub struct Group {
    pub group_uid: u64,
    pub tablets: Vec<Tablet>,
    pub leader_index: i32,
    pub generation: Bytes,
    /* private fields */
}

A Group represents a paxos group in a database. A group is a set of tablets that are replicated across multiple servers. Groups may have a leader tablet. Groups store one (or sometimes more) ranges of keys.

Fields (Non-exhaustive)

Non-exhaustive structs could have additional fields added in future. Therefore, non-exhaustive structs cannot be constructed in external crates using the traditional Struct { .. } syntax; cannot be matched against without a wildcard ..; and struct update syntax will not work.

group_uid: u64

The UID of the paxos group, unique within the database. Matches the group_uid field in Range.

tablets: Vec<Tablet>

A list of tablets that are part of the group. Note that this list may not be exhaustive; it will only include tablets the server considers useful to the client. The returned list is ordered ascending by distance.

Tablet UIDs reference Tablet.tablet_uid.

leader_index: i32

The last known leader tablet of the group as an index into tablets. May be negative if the group has no known leader.

generation: Bytes

generation indicates the freshness of the group information (including leader information) contained in this proto. Generations can be compared lexicographically; if generation A is greater than generation B, then the Group corresponding to A is newer than the Group corresponding to B, and should be used preferentially.

Implementations

impl Group

pub fn new() -> Self

Creates a new default instance.

pub fn set_group_uid<T: Into<u64>>(self, v: T) -> Self

Sets the value of group_uid.

pub fn set_tablets<T, V>(self, v: T) -> Self

where T: IntoIterator<Item = V>, V: Into<Tablet>,

Sets the value of tablets.

pub fn set_leader_index<T: Into<i32>>(self, v: T) -> Self

Sets the value of leader_index.

pub fn set_generation<T: Into<Bytes>>(self, v: T) -> Self

Sets the value of generation.

Trait Implementations

impl Clone for Group

fn clone(&self) -> Group

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for Group

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

Formats the value using the given formatter.

impl Default for Group

fn default() -> Group

Returns the “default value” for a type.

impl Message for Group

fn typename() -> &'static str

The typename of this message.

impl PartialEq for Group

fn eq(&self, other: &Group) -> 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 StructuralPartialEq for Group