fast_cache/storage/embedded_store_sharded/
errors.rs

1use super::*;
2
3/// Error returned when installing a worker-local store into thread-local state.
4#[derive(Debug, Clone, Copy, PartialEq, Eq)]
5pub enum LocalStoreInstallError {
6    AlreadyInstalled,
7}
8
9impl fmt::Display for LocalStoreInstallError {
10    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
11        match self {
12            Self::AlreadyInstalled => {
13                f.write_str("a worker-local embedded store is already installed on this thread")
14            }
15        }
16    }
17}
18
19impl std::error::Error for LocalStoreInstallError {}
20
21/// Error returned when accessing thread-local worker storage.
22#[derive(Debug, Clone, Copy, PartialEq, Eq)]
23pub enum LocalStoreAccessError {
24    NotInstalled,
25}
26
27impl fmt::Display for LocalStoreAccessError {
28    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
29        match self {
30            Self::NotInstalled => {
31                f.write_str("no worker-local embedded store is installed on this thread")
32            }
33        }
34    }
35}
36
37impl std::error::Error for LocalStoreAccessError {}
38
39/// Indicates that a requested key or session routes to another worker's shards.
40#[derive(Debug, Clone, Copy, PartialEq, Eq)]
41pub enum LocalRouteError {
42    KeyNotLocal { shard_id: usize },
43    SessionNotLocal { shard_id: usize },
44}
45
46impl fmt::Display for LocalRouteError {
47    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
48        match self {
49            Self::KeyNotLocal { shard_id } => {
50                write!(
51                    f,
52                    "key routes to shard {shard_id}, which is not owned by this thread"
53                )
54            }
55            Self::SessionNotLocal { shard_id } => write!(
56                f,
57                "session routes to shard {shard_id}, which is not owned by this thread"
58            ),
59        }
60    }
61}
62
63impl std::error::Error for LocalRouteError {}
fast_cache/storage/embedded_store_sharded/errors.rs

fast_cache/storage/embedded_store_sharded/
errors.rs
