tower_redis_cell/
error.rs

1use crate::rule::RequestBlockedDetails;
2#[cfg(feature = "deadpool")]
3use deadpool_redis::PoolError;
4use redis::RedisError;
5use redis_cell_rs::Key;
6use std::borrow::Cow;
7use std::fmt::Display;
8
9#[derive(Debug, Clone, Default)]
10#[non_exhaustive]
11pub struct ProvideRuleError<'a> {
12    pub detail: Option<Cow<'a, str>>,
13    pub key: Option<Key<'a>>,
14}
15
16impl Display for ProvideRuleError<'_> {
17    fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
18        f.write_str("failed to provide rule")?;
19        if let Some(ref detail) = self.detail {
20            f.write_str(": ")?;
21            f.write_str(detail)?;
22        }
23        Ok(())
24    }
25}
26
27impl<'a> ProvideRuleError<'a> {
28    pub fn new<K, D>(key: K, detail: D) -> Self
29    where
30        K: Into<Key<'a>>,
31        D: Into<Cow<'a, str>>,
32    {
33        Self::default().key(key).detail(detail)
34    }
35
36    pub fn detail<D>(mut self, detail: D) -> Self
37    where
38        D: Into<Cow<'a, str>>,
39    {
40        self.detail = Some(detail.into());
41        self
42    }
43
44    pub fn key<K>(mut self, key: K) -> Self
45    where
46        K: Into<Key<'a>>,
47    {
48        self.key = Some(key.into());
49        self
50    }
51}
52
53impl From<String> for ProvideRuleError<'_> {
54    fn from(value: String) -> Self {
55        ProvideRuleError::default().detail(value)
56    }
57}
58
59impl<'a> From<&'a str> for ProvideRuleError<'a> {
60    fn from(value: &'a str) -> Self {
61        ProvideRuleError::default().detail(value)
62    }
63}
64
65#[derive(Debug, thiserror::Error)]
66#[non_exhaustive]
67pub enum Error<'a> {
68    #[error("rule: {0}")]
69    ProvideRule(ProvideRuleError<'a>),
70
71    #[error(transparent)]
72    Redis(#[from] RedisError),
73
74    #[cfg(feature = "deadpool")]
75    #[error(transparent)]
76    Deadpool(#[from] PoolError),
77
78    #[error("request blocked for key {} and can be retried after {} second(s)", .0.rule.key, .0.details.retry_after)]
79    RateLimit(RequestBlockedDetails<'a>),
80}
tower_redis_cell/error.rs

tower_redis_cell/
error.rs
