Struct ClientChecksums 

pub struct ClientChecksums { /* private fields */ }

Parsed, byte-length-validated client checksum claims for a single PUT request. Built once at request entry from the raw header strings; then handed to tee_into_hashers to drive the streaming verifier.

from_request_fields performs the same pre-stream validation the buffered path’s verify_client_body_checksums did inline (base64 decodes, byte-length checks) so a malformed header fails with InvalidDigest before the body ever flows. After this returns Ok, every present claim has the correct decoded byte length.

Implementations

impl ClientChecksums

pub fn any(&self) -> bool

Returns true when at least one checksum claim is set — i.e. the streaming wrapper has work to do. When this returns false the caller should skip the wrapper entirely (zero-cost: no hashers allocated, no per-chunk update path) so non-checksummed PUTs keep their pre-#106 throughput.

pub fn from_request_fields( content_md5: Option<&str>, crc32: Option<&str>, crc32c: Option<&str>, sha1: Option<&str>, sha256: Option<&str>, crc64nvme: Option<&str>, ) -> S3Result<Self>

Parse the six AWS-spec checksum header values supplied on a single PUT request. Each argument is the base64-encoded header value (or None when the header was absent). Returns Err(InvalidDigest) when any present value is malformed (bad base64 or wrong decoded length); identical pre-stream behaviour to the buffered path’s inline validation.

impl ClientChecksums

pub fn which_hashers(&self) -> WhichHashers

Project the parsed claim set onto the boolean hasher-selector used by WhichHashers. A header-supplied claim implies the hasher must run (for EOF eager-compare).

Trait Implementations

impl Clone for ClientChecksums

fn clone(&self) -> ClientChecksums

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for ClientChecksums

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

Formats the value using the given formatter.

impl Default for ClientChecksums

fn default() -> ClientChecksums

Returns the “default value” for a type.