Enum mongodb::options::Acknowledgment

#[non_exhaustive]pub enum Acknowledgment {
    Nodes(i32),
    Majority,
    Custom(String),
}

The type of the w field in a WriteConcern.

Variants (Non-exhaustive)

Non-exhaustive enums could have additional variants added in future. Therefore, when matching against variants of non-exhaustive enums, an extra wildcard arm must be added to account for any future variants.

Nodes(i32)

Requires acknowledgement that the write has reached the specified number of nodes.

Note: specifying 0 here indicates that the write is unacknowledged. Doing so means the driver will not receive a response indicating whether an operation succeeded or failed. It also means that the operation cannot be associated with a session. It is reccommended to avoid using unacknowledged write concerns.

Majority

Requires acknowledgement that the write has reached the majority of nodes.

Custom(String)

Requires acknowledgement according to the given custom write concern. See here for more information.

Trait Implementations

impl Clone for Acknowledgment

fn clone(&self) -> Acknowledgment

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for Acknowledgment

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

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for Acknowledgment

fn deserialize<D>(deserializer: D) -> Result<Self, D::Error> where
    D: Deserializer<'de>, 

Deserialize this value from the given Serde deserializer.

impl From<String> for Acknowledgment

fn from(s: String) -> Self

Performs the conversion.

impl From<i32> for Acknowledgment

fn from(i: i32) -> Self

Performs the conversion.

impl PartialEq<Acknowledgment> for Acknowledgment

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

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

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

This method tests for !=.

impl Serialize for Acknowledgment

fn serialize<S>(&self, serializer: S) -> Result<S::Ok, S::Error> where
    S: Serializer, 

Serialize this value into the given Serde serializer.

impl StructuralPartialEq for Acknowledgment