mosaik 0.3.13

A Rust runtime for building self-organizing, leaderless distributed systems.
Documentation 
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use {
	core::time::Duration,
	mosaik::tickets::{Expiration, Hs256, Jwt, JwtTicketBuilder},
};

pub const DEFAULT_ISSUER: &str = "mosaik.test.jwt.issuer";
pub const DEFAULT_SECRET: &str = "mosaik.test.jwt.secret";

/// Derives a 32-byte key from a secret string (blake3 hash).
pub fn jwt_secret(secret: &str) -> [u8; 32] {
	*blake3::hash(secret.as_bytes()).as_bytes()
}

/// Creates a [`JwtTicketBuilder`] with the given issuer and secret.
pub fn jwt_builder(issuer: &str, secret: &str) -> JwtTicketBuilder {
	JwtTicketBuilder::new(Hs256::new(jwt_secret(secret))).issuer(issuer)
}

/// Creates a [`Jwt`] validator matching the given issuer and secret.
pub fn jwt_validator(issuer: &str, secret: &str) -> Jwt {
	Jwt::with_key(Hs256::new(jwt_secret(secret))).allow_issuer(issuer)
}

/// Returns an expiration one hour from now.
pub fn valid_expiry() -> Expiration {
	Expiration::At(chrono::Utc::now() + chrono::Duration::hours(1))
}

/// Returns an already-passed expiration (one hour ago).
pub fn expired_expiry() -> Expiration {
	Expiration::At(chrono::Utc::now() - chrono::Duration::hours(1))
}

/// Returns an expiration `duration` from now.
pub fn expiry_in(duration: Duration) -> Expiration {
	Expiration::At(
		chrono::Utc::now() + chrono::Duration::from_std(duration).unwrap(),
	)
}