Struct Metadata 

pub struct Metadata {
    pub expiration_policy: ExpirationPolicy,
    pub content_type: Cow<'static, str>,
    pub compression: Option<Compression>,
    pub size: Option<usize>,
    pub custom: BTreeMap<String, String>,
}

Per-object Metadata.

This includes special metadata like the expiration policy and compression used, as well as arbitrary user-provided metadata.

Fields

expiration_policy: ExpirationPolicy

The expiration policy of the object.

content_type: Cow<'static, str>

The content type of the object, if known.

compression: Option<Compression>

The compression algorithm used for this object, if any.

size: Option<usize>

Size of the data in bytes, if known.

custom: BTreeMap<String, String>

Some arbitrary user-provided metadata.

Implementations

impl Metadata

pub fn from_headers(headers: &HeaderMap, prefix: &str) -> Result<Self>

Extracts metadata from the given HeaderMap.

A prefix can be also be provided which is being stripped from custom non-standard headers.

pub fn to_headers( &self, prefix: &str, with_expiration: bool, ) -> Result<HeaderMap>

Turns the metadata into a HeaderMap.

It will prefix any non-standard headers with the given prefix. If the with_expiration parameter is set, it will additionally resolve the expiration policy into a specific RFC3339 datetime, and set that as the Custom-Time header.

Trait Implementations

impl Clone for Metadata

fn clone(&self) -> Metadata

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for Metadata

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

Formats the value using the given formatter.

impl Default for Metadata

fn default() -> Self

Returns the “default value” for a type.

impl<'de> Deserialize<'de> for Metadata

where Metadata: Default,

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

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl PartialEq for Metadata

fn eq(&self, other: &Metadata) -> 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 Metadata

fn serialize<__S>(&self, __serializer: __S) -> Result<__S::Ok, __S::Error>

where __S: Serializer,

Serialize this value into the given Serde serializer.

impl Eq for Metadata

impl StructuralPartialEq for Metadata