reqsign-oracle 1.0.0

Signing API requests without effort.
Documentation 
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use crate::provide_credential::{ConfigFileCredentialProvider, EnvCredentialProvider};
use crate::Credential;
use async_trait::async_trait;
use reqsign_core::{Context, ProvideCredential, ProvideCredentialChain, Result};

/// Default loader for Oracle Cloud Infrastructure.
///
/// This loader will try to load credentials in the following order:
/// 1. From environment variables
/// 2. From the default Oracle config file (~/.oci/config)
#[derive(Debug, Default)]
pub struct DefaultCredentialProvider {
    chain: ProvideCredentialChain<Credential>,
}

impl DefaultCredentialProvider {
    /// Create a new DefaultCredentialProvider
    pub fn new() -> Self {
        let chain = ProvideCredentialChain::new()
            .push(EnvCredentialProvider::new())
            .push(ConfigFileCredentialProvider::new());

        Self { chain }
    }
}

#[async_trait]
impl ProvideCredential for DefaultCredentialProvider {
    type Credential = Credential;

    async fn provide_credential(&self, ctx: &Context) -> Result<Option<Self::Credential>> {
        self.chain.provide_credential(ctx).await
    }
}