Struct FileBackend 

pub struct FileBackend;

Stdlib-only backend that reads secrets from files.

Default behavior strips exactly one trailing \n or \r\n from the file contents — matching the dominant convention for Docker secrets, Kubernetes secrets, and systemd-creds. Use ?raw=true for verbatim bytes.

Trait Implementations

impl Backend for FileBackend

fn scheme(&self) -> &'static str

Returns the URL scheme this backend handles (e.g., "env").

fn validate(&self, url: &Url) -> Result<(), Error>

Validate URL grammar without performing I/O.

fn get(&self, url: &Url) -> Result<SecretString, Error>

Fetch the secret at the given URL.

fn put(&self, url: &Url, value: &SecretString) -> Result<(), Error>

Store a secret at the given URL.

fn list(&self, url: &Url) -> Result<Vec<Entry>, Error>

List entries matching the URL prefix or pattern.

fn delete(&self, url: &Url) -> Result<(), Error>

Delete the secret at the given URL.

fn exists(&self, url: &Url) -> Result<bool, Error>

Returns true if a secret exists at the given URL.