mentat/public-traits/errors.rs
Grisha Kruglov 22b17a6779 Split "mentat transaction" logic away from the main crate
Sync needs to operate over a "mentat transaction", not just a "db transaction".
This shuffle allows internal mentat crates to consume InProgress, which models
the concept of a "mentat transaction".
2018-08-20 18:23:46 -07:00

179 lines
4.9 KiB
Rust

// Copyright 2016 Mozilla
//
// Licensed under the Apache License, Version 2.0 (the "License"); you may not use
// this file except in compliance with the License. You may obtain a copy of the
// License at http://www.apache.org/licenses/LICENSE-2.0
// Unless required by applicable law or agreed to in writing, software distributed
// under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR
// CONDITIONS OF ANY KIND, either express or implied. See the License for the
// specific language governing permissions and limitations under the License.
#![allow(dead_code)]
use std; // To refer to std::result::Result.
use std::collections::BTreeSet;
use rusqlite;
use edn;
use core_traits::{
Attribute,
ValueType,
};
use db_traits::errors::{
DbError,
};
use query_algebrizer_traits::errors::{
AlgebrizerError,
};
use query_projector_traits::errors::{
ProjectorError,
};
use query_pull_traits::errors::{
PullError,
};
use sql_traits::errors::{
SQLError,
};
#[cfg(feature = "syncable")]
use tolstoy_traits::errors::{
TolstoyError,
};
pub type Result<T> = std::result::Result<T, MentatError>;
#[derive(Debug, Fail)]
pub enum MentatError {
#[fail(display = "bad uuid {}", _0)]
BadUuid(String),
#[fail(display = "path {} already exists", _0)]
PathAlreadyExists(String),
#[fail(display = "variables {:?} unbound at query execution time", _0)]
UnboundVariables(BTreeSet<String>),
#[fail(display = "invalid argument name: '{}'", _0)]
InvalidArgumentName(String),
#[fail(display = "unknown attribute: '{}'", _0)]
UnknownAttribute(String),
#[fail(display = "invalid vocabulary version")]
InvalidVocabularyVersion,
#[fail(display = "vocabulary {}/version {} already has attribute {}, and the requested definition differs", _0, _1, _2)]
ConflictingAttributeDefinitions(String, u32, String, Attribute, Attribute),
#[fail(display = "existing vocabulary {} too new: wanted version {}, got version {}", _0, _1, _2)]
ExistingVocabularyTooNew(String, u32, u32),
#[fail(display = "core schema: wanted version {}, got version {:?}", _0, _1)]
UnexpectedCoreSchema(u32, Option<u32>),
#[fail(display = "Lost the transact() race!")]
UnexpectedLostTransactRace,
#[fail(display = "missing core attribute {}", _0)]
MissingCoreVocabulary(edn::query::Keyword),
#[fail(display = "schema changed since query was prepared")]
PreparedQuerySchemaMismatch,
#[fail(display = "provided value of type {} doesn't match attribute value type {}", _0, _1)]
ValueTypeMismatch(ValueType, ValueType),
#[fail(display = "{}", _0)]
IoError(#[cause] std::io::Error),
/// We're just not done yet. Message that the feature is recognized but not yet
/// implemented.
#[fail(display = "not yet implemented: {}", _0)]
NotYetImplemented(String),
// It would be better to capture the underlying `rusqlite::Error`, but that type doesn't
// implement many useful traits, including `Clone`, `Eq`, and `PartialEq`.
#[fail(display = "SQL error: {}", _0)]
RusqliteError(String),
#[fail(display = "{}", _0)]
EdnParseError(#[cause] edn::ParseError),
#[fail(display = "{}", _0)]
DbError(#[cause] DbError),
#[fail(display = "{}", _0)]
AlgebrizerError(#[cause] AlgebrizerError),
#[fail(display = "{}", _0)]
ProjectorError(#[cause] ProjectorError),
#[fail(display = "{}", _0)]
PullError(#[cause] PullError),
#[fail(display = "{}", _0)]
SQLError(#[cause] SQLError),
#[cfg(feature = "syncable")]
#[fail(display = "{}", _0)]
TolstoyError(#[cause] TolstoyError),
}
impl From<std::io::Error> for MentatError {
fn from(error: std::io::Error) -> MentatError {
MentatError::IoError(error)
}
}
impl From<rusqlite::Error> for MentatError {
fn from(error: rusqlite::Error) -> MentatError {
MentatError::RusqliteError(error.to_string())
}
}
impl From<edn::ParseError> for MentatError {
fn from(error: edn::ParseError) -> MentatError {
MentatError::EdnParseError(error)
}
}
impl From<DbError> for MentatError {
fn from(error: DbError) -> MentatError {
MentatError::DbError(error)
}
}
impl From<AlgebrizerError> for MentatError {
fn from(error: AlgebrizerError) -> MentatError {
MentatError::AlgebrizerError(error)
}
}
impl From<ProjectorError> for MentatError {
fn from(error: ProjectorError) -> MentatError {
MentatError::ProjectorError(error)
}
}
impl From<PullError> for MentatError {
fn from(error: PullError) -> MentatError {
MentatError::PullError(error)
}
}
impl From<SQLError> for MentatError {
fn from(error: SQLError) -> MentatError {
MentatError::SQLError(error)
}
}
#[cfg(feature = "syncable")]
impl From<TolstoyError> for MentatError {
fn from(error: TolstoyError) -> MentatError {
MentatError::TolstoyError(error)
}
}