Enum PutMode 

pub enum PutMode {
    Overwrite,
    CreateIfAbsent,
    CompareAndSwap {
        expected_etag: String,
    },
}

Controls the write semantics of a put call.

Variants

Overwrite

Unconditionally overwrite any existing object.

CreateIfAbsent

Write only if the key does not already exist. Returns PreconditionFailed if it does.

CompareAndSwap

Write only if the current etag matches. Returns PreconditionFailed on mismatch.

Fields

expected_etag: String

Opaque token returned by a prior observation of this same key.

Trait Implementations

impl Clone for PutMode

fn clone(&self) -> PutMode

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for PutMode

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

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for PutMode

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

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Eq for PutMode

impl PartialEq for PutMode

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

Equality operator ==.

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

Inequality operator !=.

impl Serialize for PutMode

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 PutMode