duende_policy/
error.rs

1//! Policy error types.
2
3/// Result type alias for policy operations.
4pub type Result<T> = std::result::Result<T, PolicyError>;
5
6/// Policy enforcement errors.
7#[derive(Debug, thiserror::Error)]
8pub enum PolicyError {
9    /// Circuit breaker open.
10    #[error("circuit breaker open")]
11    CircuitOpen,
12
13    /// Quality gate failed.
14    #[error("quality gate failed: {0}")]
15    GateFailed(String),
16
17    /// Resource limit error.
18    #[error("resource limit error: {0}")]
19    ResourceLimit(String),
20
21    /// Jidoka violation.
22    #[error("jidoka violation: {0}")]
23    JidokaViolation(String),
24
25    /// I/O error.
26    #[error("I/O error: {0}")]
27    Io(#[from] std::io::Error),
28}
29
30impl PolicyError {
31    /// Creates a gate failed error.
32    #[must_use]
33    pub fn gate_failed(msg: impl Into<String>) -> Self {
34        Self::GateFailed(msg.into())
35    }
36
37    /// Creates a jidoka violation error.
38    #[must_use]
39    pub fn jidoka_violation(msg: impl Into<String>) -> Self {
40        Self::JidokaViolation(msg.into())
41    }
42}
43
44#[cfg(test)]
45mod tests {
46    use super::*;
47
48    #[test]
49    fn test_circuit_open_error() {
50        let err = PolicyError::CircuitOpen;
51        assert!(err.to_string().contains("circuit breaker open"));
52    }
53
54    #[test]
55    fn test_gate_failed_error() {
56        let err = PolicyError::gate_failed("complexity threshold exceeded");
57        assert!(err.to_string().contains("quality gate failed"));
58        assert!(err.to_string().contains("complexity"));
59    }
60
61    #[test]
62    fn test_jidoka_violation_error() {
63        let err = PolicyError::jidoka_violation("invariant violated");
64        assert!(err.to_string().contains("jidoka violation"));
65        assert!(err.to_string().contains("invariant"));
66    }
67
68    #[test]
69    fn test_resource_limit_error() {
70        let err = PolicyError::ResourceLimit("memory exceeded".into());
71        assert!(err.to_string().contains("resource limit"));
72    }
73
74    #[test]
75    fn test_io_error_conversion() {
76        let io_err = std::io::Error::new(std::io::ErrorKind::PermissionDenied, "access denied");
77        let err: PolicyError = io_err.into();
78        assert!(err.to_string().contains("I/O error"));
79    }
80}
duende_policy/error.rs

duende_policy/
error.rs
