Struct S3PutOptions 

pub struct S3PutOptions<'a> {
    pub content_type: &'a str,
    pub blake3_meta: Option<&'a str>,
    pub cache_control: Option<&'a str>,
}

The per-object headers a PUT carries beyond the ones SigV4 always needs.

A struct rather than more positional arguments: sign_s3_put_object was already at eight, two of them Option<&str>, and a third adjacent optional string is the kind of parameter list where a swapped pair compiles and ships the wrong header.

Fields

content_type: &'a str

Content-Type. Empty is not valid S3 — pass the caller’s default.

blake3_meta: Option<&'a str>

x-amz-meta-blake3 (R546-B10) — see sign_s3_put_object.

cache_control: Option<&'a str>

Cache-Control (R703-B8). None leaves the header off entirely, which is how every CLI-driven publish behaved before this existed: R2 then serves the object with no directive at all, so a browser (and any future edge-cache rule) is free to hold a mutable pointer — latest.json, a release manifest — for as long as it likes. Versioned, content-addressed keys want CACHE_CONTROL_IMMUTABLE; fixed-key pointers want CACHE_CONTROL_NO_CACHE.

Trait Implementations

impl<'a> Clone for S3PutOptions<'a>

fn clone(&self) -> S3PutOptions<'a>

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl<'a> Debug for S3PutOptions<'a>

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

Formats the value using the given formatter.

impl<'a> Default for S3PutOptions<'a>

fn default() -> S3PutOptions<'a>

Returns the “default value” for a type.