ankurah_core/
error.rs

1use std::{collections::BTreeSet, convert::Infallible};
2
3use ankurah_proto::{CollectionId, DecodeError, EntityId, EventId};
4use thiserror::Error;
5
6use crate::{connector::SendError, policy::AccessDenied};
7
8#[derive(Error, Debug)]
9pub enum RetrievalError {
10    #[error("access denied")]
11    AccessDenied(AccessDenied),
12    #[error("Parse error: {0}")]
13    ParseError(ankql::error::ParseError),
14    #[error("Entity not found: {0:?}")]
15    EntityNotFound(EntityId),
16    #[error("Event not found: {0:?}")]
17    EventNotFound(EventId),
18    #[error("Storage error: {0}")]
19    StorageError(Box<dyn std::error::Error + Send + Sync + 'static>),
20    #[error("Collection not found: {0}")]
21    CollectionNotFound(CollectionId),
22    #[error("Update failed: {0}")]
23    FailedUpdate(Box<dyn std::error::Error + Send + Sync + 'static>),
24    #[error("Deserialization error: {0}")]
25    DeserializationError(bincode::Error),
26    #[error("No durable peers available for fetch operation")]
27    NoDurablePeers,
28    #[error("Other error: {0}")]
29    Other(String),
30    #[error("bucket name must only contain valid characters")]
31    InvalidBucketName,
32    #[error("ankql filter: {0}")]
33    AnkqlFilter(ankql::selection::filter::Error),
34    #[error("Future join: {0}")]
35    FutureJoin(tokio::task::JoinError),
36    #[error("{0}")]
37    Anyhow(anyhow::Error),
38    #[error("Decode error: {0}")]
39    DecodeError(DecodeError),
40    #[error("State error: {0}")]
41    StateError(StateError),
42    #[error("Mutation error: {0}")]
43    MutationError(Box<MutationError>),
44    #[error("Property error: {0}")]
45    PropertyError(Box<crate::property::PropertyError>),
46    #[error("Request error: {0}")]
47    RequestError(RequestError),
48    #[error("Apply error: {0}")]
49    ApplyError(ApplyError),
50}
51
52impl From<RequestError> for RetrievalError {
53    fn from(err: RequestError) -> Self { RetrievalError::RequestError(err) }
54}
55
56impl From<crate::property::PropertyError> for RetrievalError {
57    fn from(err: crate::property::PropertyError) -> Self { RetrievalError::PropertyError(Box::new(err)) }
58}
59
60impl From<tokio::task::JoinError> for RetrievalError {
61    fn from(err: tokio::task::JoinError) -> Self { RetrievalError::FutureJoin(err) }
62}
63
64impl From<MutationError> for RetrievalError {
65    fn from(err: MutationError) -> Self { RetrievalError::MutationError(Box::new(err)) }
66}
67
68impl RetrievalError {
69    pub fn storage(err: impl std::error::Error + Send + Sync + 'static) -> Self { RetrievalError::StorageError(Box::new(err)) }
70}
71
72impl From<bincode::Error> for RetrievalError {
73    fn from(e: bincode::Error) -> Self { RetrievalError::DeserializationError(e) }
74}
75
76impl From<ankql::selection::filter::Error> for RetrievalError {
77    fn from(err: ankql::selection::filter::Error) -> Self { RetrievalError::AnkqlFilter(err) }
78}
79
80impl From<anyhow::Error> for RetrievalError {
81    fn from(err: anyhow::Error) -> Self { RetrievalError::Anyhow(err) }
82}
83
84impl From<Infallible> for RetrievalError {
85    fn from(_: Infallible) -> Self { unreachable!("Infallible can never be constructed") }
86}
87
88#[derive(Error, Debug)]
89pub enum RequestError {
90    #[error("Peer not connected")]
91    PeerNotConnected,
92    #[error("Connection lost")]
93    ConnectionLost,
94    #[error("Server error: {0}")]
95    ServerError(String),
96    #[error("Send error: {0}")]
97    SendError(SendError),
98    #[error("Internal channel closed")]
99    InternalChannelClosed,
100    #[error("Unexpected response: {0:?}")]
101    UnexpectedResponse(ankurah_proto::NodeResponseBody),
102}
103
104impl From<SendError> for RequestError {
105    fn from(err: SendError) -> Self { RequestError::SendError(err) }
106}
107
108#[derive(Error, Debug)]
109pub enum SubscriptionError {
110    #[error("predicate not found")]
111    PredicateNotFound,
112    #[error("already subscribed to predicate")]
113    PredicateAlreadySubscribed,
114    #[error("subscription not found")]
115    SubscriptionNotFound,
116}
117
118impl From<DecodeError> for RetrievalError {
119    fn from(err: DecodeError) -> Self { RetrievalError::DecodeError(err) }
120}
121
122#[derive(Error, Debug)]
123pub enum MutationError {
124    #[error("access denied")]
125    AccessDenied(AccessDenied),
126    #[error("already exists")]
127    AlreadyExists,
128    #[error("retrieval error: {0}")]
129    RetrievalError(RetrievalError),
130    #[error("state error: {0}")]
131    StateError(StateError),
132    #[error("failed update: {0}")]
133    UpdateFailed(Box<dyn std::error::Error + Send + Sync + 'static>),
134    #[error("failed step: {0}: {1}")]
135    FailedStep(&'static str, String),
136    #[error("failed to set property: {0}: {1}")]
137    FailedToSetProperty(&'static str, String),
138    #[error("general error: {0}")]
139    General(Box<dyn std::error::Error + Send + Sync + 'static>),
140    #[error("no durable peers available")]
141    NoDurablePeers,
142    #[error("decode error: {0}")]
143    DecodeError(DecodeError),
144    #[error("lineage error: {0}")]
145    LineageError(LineageError),
146    #[error("peer rejected transaction")]
147    PeerRejected,
148    #[error("invalid event")]
149    InvalidEvent,
150    #[error("invalid update")]
151    InvalidUpdate(&'static str),
152    #[error("property error: {0}")]
153    PropertyError(crate::property::PropertyError),
154    #[error("future join: {0}")]
155    FutureJoin(tokio::task::JoinError),
156    #[error("anyhow error: {0}")]
157    Anyhow(anyhow::Error),
158}
159
160impl From<tokio::task::JoinError> for MutationError {
161    fn from(err: tokio::task::JoinError) -> Self { MutationError::FutureJoin(err) }
162}
163
164impl From<anyhow::Error> for MutationError {
165    fn from(err: anyhow::Error) -> Self { MutationError::Anyhow(err) }
166}
167
168#[derive(Debug)]
169pub enum LineageError {
170    Incomparable,
171    PartiallyDescends { meet: Vec<EventId> },
172    BudgetExceeded { original_budget: usize, subject_frontier: BTreeSet<EventId>, other_frontier: BTreeSet<EventId> },
173}
174
175impl std::fmt::Display for LineageError {
176    fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
177        match self {
178            LineageError::Incomparable => write!(f, "incomparable"),
179            LineageError::PartiallyDescends { meet } => {
180                write!(f, "partially descends: [")?;
181                let meets: Vec<_> = meet.iter().map(|id| id.to_base64_short()).collect();
182                write!(f, "{}]", meets.join(", "))
183            }
184            LineageError::BudgetExceeded { original_budget, subject_frontier, other_frontier } => {
185                let subject: Vec<_> = subject_frontier.iter().map(|id| id.to_base64_short()).collect();
186                let other: Vec<_> = other_frontier.iter().map(|id| id.to_base64_short()).collect();
187                write!(f, "budget exceeded ({}): subject[{}] other[{}]", original_budget, subject.join(", "), other.join(", "))
188            }
189        }
190    }
191}
192
193impl std::error::Error for LineageError {}
194
195impl From<LineageError> for MutationError {
196    fn from(err: LineageError) -> Self { MutationError::LineageError(err) }
197}
198
199impl From<DecodeError> for MutationError {
200    fn from(err: DecodeError) -> Self { MutationError::DecodeError(err) }
201}
202
203#[cfg(feature = "wasm")]
204impl From<MutationError> for wasm_bindgen::JsValue {
205    fn from(err: MutationError) -> Self { err.to_string().into() }
206}
207#[cfg(feature = "wasm")]
208impl From<RetrievalError> for wasm_bindgen::JsValue {
209    fn from(err: RetrievalError) -> Self { err.to_string().into() }
210}
211
212impl From<AccessDenied> for MutationError {
213    fn from(err: AccessDenied) -> Self { MutationError::AccessDenied(err) }
214}
215
216impl From<bincode::Error> for MutationError {
217    fn from(e: bincode::Error) -> Self { MutationError::StateError(StateError::SerializationError(e)) }
218}
219
220impl From<RetrievalError> for MutationError {
221    fn from(err: RetrievalError) -> Self {
222        match err {
223            RetrievalError::AccessDenied(a) => MutationError::AccessDenied(a),
224            _ => MutationError::RetrievalError(err),
225        }
226    }
227}
228impl From<AccessDenied> for RetrievalError {
229    fn from(err: AccessDenied) -> Self { RetrievalError::AccessDenied(err) }
230}
231
232impl From<SubscriptionError> for RetrievalError {
233    fn from(err: SubscriptionError) -> Self { RetrievalError::Anyhow(anyhow::anyhow!("Subscription error: {:?}", err)) }
234}
235
236#[derive(Error, Debug)]
237pub enum StateError {
238    #[error("serialization error: {0}")]
239    SerializationError(Box<dyn std::error::Error + Send + Sync + 'static>),
240    #[error("DDL error: {0}")]
241    DDLError(Box<dyn std::error::Error + Send + Sync + 'static>),
242    #[error("DMLError: {0}")]
243    DMLError(Box<dyn std::error::Error + Send + Sync + 'static>),
244}
245
246impl From<bincode::Error> for StateError {
247    fn from(e: bincode::Error) -> Self { StateError::SerializationError(Box::new(e)) }
248}
249
250impl From<StateError> for MutationError {
251    fn from(err: StateError) -> Self { MutationError::StateError(err) }
252}
253
254impl From<crate::property::PropertyError> for MutationError {
255    fn from(err: crate::property::PropertyError) -> Self { MutationError::PropertyError(err) }
256}
257
258impl From<StateError> for RetrievalError {
259    fn from(err: StateError) -> Self { RetrievalError::StateError(err) }
260}
261
262#[derive(Error, Debug)]
263pub enum ValidationError {
264    #[error("Deserialization error: {0}")]
265    Deserialization(Box<dyn std::error::Error + Send + Sync + 'static>),
266    #[error("Validation failed: {0}")]
267    ValidationFailed(String),
268    #[error("Serialization error: {0}")]
269    Serialization(String),
270    #[error("Rejected: {0}")]
271    Rejected(&'static str),
272}
273
274/// Error type for NodeApplier operations (applying remote deltas)
275#[derive(Debug)]
276pub enum ApplyError {
277    Items(Vec<ApplyErrorItem>),
278    CollectionNotFound(CollectionId),
279    RetrievalError(Box<RetrievalError>),
280    MutationError(Box<MutationError>),
281}
282
283impl std::fmt::Display for ApplyError {
284    fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
285        match self {
286            ApplyError::Items(errors) => {
287                write!(f, "Failed to apply {} delta(s)", errors.len())?;
288                for (i, err) in errors.iter().enumerate() {
289                    write!(f, "\n  [{}] {}", i + 1, err)?;
290                }
291                Ok(())
292            }
293            ApplyError::CollectionNotFound(id) => write!(f, "Collection not found: {}", id),
294            ApplyError::RetrievalError(e) => write!(f, "Retrieval error: {}", e),
295            ApplyError::MutationError(e) => write!(f, "Mutation error: {}", e),
296        }
297    }
298}
299
300impl std::error::Error for ApplyError {
301    fn source(&self) -> Option<&(dyn std::error::Error + 'static)> {
302        match self {
303            ApplyError::RetrievalError(e) => Some(e),
304            ApplyError::MutationError(e) => Some(e),
305            _ => None,
306        }
307    }
308}
309
310/// Error applying a specific delta
311#[derive(Debug)]
312pub struct ApplyErrorItem {
313    pub entity_id: EntityId,
314    pub collection: CollectionId,
315    pub cause: MutationError,
316}
317
318impl std::fmt::Display for ApplyErrorItem {
319    fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
320        write!(f, "Failed to apply delta for entity {} in collection {}: {}", self.entity_id.to_base64_short(), self.collection, self.cause)
321    }
322}
323
324impl From<RetrievalError> for ApplyError {
325    fn from(err: RetrievalError) -> Self { ApplyError::RetrievalError(Box::new(err)) }
326}
327
328impl From<MutationError> for ApplyError {
329    fn from(err: MutationError) -> Self { ApplyError::MutationError(Box::new(err)) }
330}
331
332impl From<ApplyError> for RetrievalError {
333    fn from(err: ApplyError) -> Self { RetrievalError::ApplyError(err) }
334}
ankurah_core/error.rs

ankurah_core/
error.rs
