Enum PutCondition 

pub enum PutCondition {
    IfMatch(String),
    IfNoneMatchAny,
    Unconditional,
}

A6: every publish is conditional. There is deliberately NO unconditional variant — a caller wanting one has an upstream design error.

Variants

IfMatch(String)

Publish generation g+1 only if the object is still generation g’s bytes (its ETag). The 412 this produces is an internal fencing event — see tier::arbitrate.

IfNoneMatchAny

First generation of a new key: fail if ANY object exists (closes the create race with outside writers).

Unconditional

No precondition: create, or overwrite whatever is there.

Deliberately narrow. It exists for CONTENT-ADDRESSED objects, where the rewrite is byte-identical and the POINT is to refresh the object’s age rather than to change its contents: an adopted manifest chunk is an old object that a new publish is about to make live, and a sweep that reads age would otherwise collect it as the orphan it still looks like (flint-lean chunked-manifest design §8.1, machine-checked by LeanChunkGCAdoptSkips).

Never reach for this where a concurrent writer’s content could DIFFER from yours — that is what the other two variants are for, and losing that distinction is how a last-writer-wins overwrite gets reintroduced.

Trait Implementations

impl Clone for PutCondition

fn clone(&self) -> PutCondition

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for PutCondition

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

Formats the value using the given formatter.

impl Eq for PutCondition

impl PartialEq for PutCondition

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

Equality operator ==.

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

Inequality operator !=.

impl StructuralPartialEq for PutCondition