Struct opendal::layers::MimeGuessLayer

#[non_exhaustive]
pub struct MimeGuessLayer {}

Available on crate feature layers-mime-guess only.

A layer that can automatically set Content-Type based on the file extension in the path.

MimeGuess

This layer uses mime_guess to automatically set Content-Type based on the file extension in the operation path.

However, please note that this layer will not overwrite the content_type you manually set, nor will it overwrite the content_type provided by backend services.

A simple example is that for object storage backends, when you call stat, the backend will provide content_type information, and mime_guess will not be called, but will use the content_type provided by the backend.

But if you use the Fs backend to call stat, the backend will not provide content_type information, and our mime_guess will be called to provide you with appropriate content_type information.

Another thing to note is that using this layer does not necessarily mean that the result will 100% contain content_type information. If the extension of your path is custom or an uncommon type, the returned result will still not contain content_type information (the specific condition here is when mime_guess::from_path::first_raw returns None).

Examples

let _ = Operator::new(services::Memory::default())?
    .layer(MimeGuessLayer::default())
    .finish();
Ok(())

Trait Implementations

impl Clone for MimeGuessLayer

fn clone(&self) -> MimeGuessLayer

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for MimeGuessLayer

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

Formats the value using the given formatter.

impl Default for MimeGuessLayer

fn default() -> MimeGuessLayer

Returns the “default value” for a type.

impl<A: Access> Layer<A> for MimeGuessLayer

type LayeredAccess = MimeGuessAccessor<A>

The layered accessor that returned by this layer.

fn layer(&self, inner: A) -> Self::LayeredAccess

Intercept the operations on the underlying storage.