Trait Backend 

pub trait Backend:
    Clone
    + Send
    + Sync
    + 'static {
    type File: File<Metadata = Self::Metadata>;
    type Metadata: Metadata;
    type OpenFuture: Future<Output = Result<Self::File>> + Send;
    type MetadataFuture: Future<Output = Result<Self::Metadata>> + Send;

    // Required methods
    fn open(&self, path: PathBuf) -> Self::OpenFuture;
    fn metadata(&self, path: PathBuf) -> Self::MetadataFuture;
}

Available on crate feature fs only.

Trait abstracting filesystem operations for ServeDir.

Implement this trait to serve files from non-filesystem sources. The default implementation (TokioBackend) wraps tokio::fs.

Required Associated Types

type File: File<Metadata = Self::Metadata>

The file type returned by Backend::open.

type Metadata: Metadata

The metadata type returned by Backend::metadata.

type OpenFuture: Future<Output = Result<Self::File>> + Send

Future returned by Backend::open.

type MetadataFuture: Future<Output = Result<Self::Metadata>> + Send

Future returned by Backend::metadata.

Required Methods

fn open(&self, path: PathBuf) -> Self::OpenFuture

Open a file at the given path.

fn metadata(&self, path: PathBuf) -> Self::MetadataFuture

Retrieve metadata for the given path without opening the file.

Dyn Compatibility

This trait is not dyn compatible.

In older versions of Rust, dyn compatibility was called "object safety".

Implementors

impl Backend for TokioBackend

type File = TokioFile

type Metadata = Metadata

type OpenFuture = Pin<Box<dyn Future<Output = Result<TokioFile, Error>> + Send>>

type MetadataFuture = Pin<Box<dyn Future<Output = Result<Metadata, Error>> + Send>>