commonware_storage/qmdb/sync/
error.rs

1//! Shared sync error types that can be used across different database implementations.
2
3use crate::{
4    merkle::{Family, Location},
5    qmdb::{self},
6};
7use commonware_cryptography::Digest;
8
9/// Errors from a [`Source`](crate::qmdb::sync::source::Source) when serving a request.
10#[derive(Debug, thiserror::Error)]
11pub enum ServeError<F: Family> {
12    #[error("source database error: {0}")]
13    Database(#[from] qmdb::Error<F>),
14    #[error("source missing")]
15    MissingSource,
16}
17
18#[derive(Debug, thiserror::Error)]
19pub enum EngineError<F: Family, D: Digest> {
20    /// Hash mismatch after sync
21    #[error("root digest mismatch - expected {expected:?}, got {actual:?}")]
22    RootMismatch { expected: D, actual: D },
23    /// The source finished without a response that satisfies the request.
24    #[error("source returned no valid response")]
25    InvalidResponse,
26    /// Invalid target parameters
27    #[error("invalid bounds: lower bound {lower_bound_pos} > upper bound {upper_bound_pos}")]
28    InvalidTarget {
29        lower_bound_pos: Location<F>,
30        upper_bound_pos: Location<F>,
31    },
32    /// Invalid client state
33    #[error("invalid client state")]
34    InvalidState,
35    /// Sync target root unchanged
36    #[error("sync target root unchanged")]
37    SyncTargetRootUnchanged,
38    /// Sync stalled - no pending fetches
39    #[error("sync stalled - no pending fetches")]
40    SyncStalled,
41    /// Sync finish signal channel closed before finish was requested.
42    #[error("sync finish signal channel closed before finish was requested")]
43    FinishChannelClosed,
44}
45
46/// Errors that can occur during database synchronization.
47#[derive(Debug, thiserror::Error)]
48pub enum Error<F, U, D>
49where
50    F: Family,
51    U: std::error::Error + Send + 'static,
52    D: Digest,
53{
54    /// Database error
55    #[error("database error: {0}")]
56    Database(crate::qmdb::Error<F>),
57
58    /// Source error
59    #[error("source error: {0:?}")]
60    Source(U),
61
62    /// Engine error
63    #[error("engine error: {0}")]
64    Engine(EngineError<F, D>),
65}
66
67impl<F, T, U, D> From<T> for Error<F, U, D>
68where
69    F: Family,
70    U: std::error::Error + Send + 'static,
71    D: Digest,
72    T: Into<crate::qmdb::Error<F>>,
73{
74    fn from(err: T) -> Self {
75        Self::Database(err.into())
76    }
77}
commonware_storage/qmdb/sync/error.rs

commonware_storage/qmdb/sync/
error.rs
