Struct CompositeCredentialProvider 

pub struct CompositeCredentialProvider { /* private fields */ }

Tries multiple CredentialProviders in order until one succeeds.

Useful for layering: environment variables override file credentials, which override compiled-in defaults.

Example

let provider = CompositeCredentialProvider::new()
    .with_provider(EnvVarCredentialProvider::new("QUANTRS"));
let _ = provider.get_credential("IBM_TOKEN");

Implementations

impl CompositeCredentialProvider

pub fn new() -> Self

Create an empty composite provider (no sources yet)

pub fn with_provider(self, p: impl CredentialProvider + 'static) -> Self

Append a credential provider source (tried in insertion order)

Trait Implementations

impl CredentialProvider for CompositeCredentialProvider

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.

impl Default for CompositeCredentialProvider

fn default() -> Self

Returns the “default value” for a type.