Struct MongoReadPreference 

pub struct MongoReadPreference {
    pub mode: ReadPreference,
    pub max_staleness_seconds: Option<u32>,
    pub tag_sets: Vec<Map<String, Value>>,
    pub hedge: Option<bool>,
}

MongoDB read preference with options.

Fields

mode: ReadPreference

Read preference mode.

max_staleness_seconds: Option<u32>

Maximum staleness in seconds.

tag_sets: Vec<Map<String, Value>>

Tag sets for filtering replicas.

hedge: Option<bool>

Hedge reads for sharded clusters.

Implementations

impl MongoReadPreference

pub fn new(mode: ReadPreference) -> Self

Create a new read preference.

pub fn max_staleness(self, seconds: u32) -> Self

Set max staleness.

pub fn tag_set(self, tags: Map<String, JsonValue>) -> Self

Add a tag set.

pub fn hedged(self) -> Self

Enable hedged reads.

pub fn to_connection_options(&self) -> String

Convert to MongoDB connection string options.

pub fn to_command_options(&self) -> JsonValue

Convert to MongoDB command options.

Trait Implementations

impl Clone for MongoReadPreference

fn clone(&self) -> MongoReadPreference

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for MongoReadPreference

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

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for MongoReadPreference

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

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl PartialEq for MongoReadPreference

fn eq(&self, other: &MongoReadPreference) -> 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 Serialize for MongoReadPreference

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 MongoReadPreference