Struct EnvVarCredentialProvider 

pub struct EnvVarCredentialProvider { /* private fields */ }

Reads credentials from environment variables.

Keys are looked up as {PREFIX}_{KEY} (both uppercased). If the prefix is empty the key is used directly, uppercased.

Example

let provider = EnvVarCredentialProvider::new("QUANTRS");
// looks for env var "QUANTRS_IBM_TOKEN"
let _ = provider.get_credential("IBM_TOKEN");

Implementations

impl EnvVarCredentialProvider

pub fn new(prefix: impl Into<String>) -> Self

Create a new provider with the given environment variable prefix

Trait Implementations

impl CredentialProvider for EnvVarCredentialProvider

fn get_credential(&self, key: &str) -> Result<SecretString, CredentialError>

Retrieve a credential by key, returning a zeroing SecretString

fn available_keys(&self) -> Vec<String>

List available credential keys.