Struct Parts 

#[non_exhaustive]
pub struct Parts {
    pub headers: HeaderMap<HeaderValue>,
}

Component parts of a response.

The response parts, other than the body, consist of just headers. We anticipate the addition of new fields over time.

The headers are used to return gRPC metadata, as well as (unsurprisingly) HTTP headers.

Example

let mut headers = http::HeaderMap::new();
headers.insert(http::header::CONTENT_TYPE, http::HeaderValue::from_static("application/json"));
let parts = Parts::new().set_headers(headers);

assert_eq!(
    parts.headers.get(http::header::CONTENT_TYPE),
    Some(&http::HeaderValue::from_static("application/json"))
);

Fields (Non-exhaustive)

Non-exhaustive structs could have additional fields added in future. Therefore, non-exhaustive structs cannot be constructed in external crates using the traditional Struct { .. } syntax; cannot be matched against without a wildcard ..; and struct update syntax will not work.

headers: HeaderMap<HeaderValue>

The HTTP headers or the gRPC metadata converted to HTTP headers.

Implementations

impl Parts

pub fn new() -> Self

Create a new instance.

Example

let parts = Parts::new();
assert!(parts.headers.is_empty());

pub fn set_headers<V>(self, v: V) -> Self

where V: Into<HeaderMap>,

Set the headers.

Example

let mut headers = http::HeaderMap::new();
headers.insert(
    http::header::CONTENT_TYPE,
    http::HeaderValue::from_static("application/json"),
);
let parts = Parts::new().set_headers(headers.clone());
assert_eq!(parts.headers, headers);

Trait Implementations

impl Clone for Parts

fn clone(&self) -> Parts

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for Parts

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

Formats the value using the given formatter.

impl Default for Parts

fn default() -> Parts

Returns the “default value” for a type.