mentat/public-traits/errors.rs

227 lines
6.1 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 std::error::Error;
use rusqlite;
use uuid;
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;
#[cfg(feature = "syncable")]
use hyper;
#[cfg(feature = "syncable")]
use serde_json;
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: {}, cause: {}", _0, _1)]
RusqliteError(String, 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),
#[fail(display = "{}", _0)]
UuidError(#[cause] uuid::Error),
#[cfg(feature = "syncable")]
#[fail(display = "{}", _0)]
TolstoyError(#[cause] TolstoyError),
#[cfg(feature = "syncable")]
#[fail(display = "{}", _0)]
NetworkError(#[cause] hyper::Error),
#[cfg(feature = "syncable")]
#[fail(display = "{}", _0)]
UriError(#[cause] http::uri::InvalidUri),
#[cfg(feature = "syncable")]
#[fail(display = "{}", _0)]
SerializationError(#[cause] serde_json::Error),
}
impl From<std::io::Error> for MentatError {
fn from(error: std::io::Error) -> Self {
MentatError::IoError(error)
}
}
impl From<rusqlite::Error> for MentatError {
fn from(error: rusqlite::Error) -> Self {
let cause = match error.source() {
Some(e) => e.to_string(),
None => "".to_string(),
};
MentatError::RusqliteError(error.to_string(), cause)
}
}
impl From<uuid::Error> for MentatError {
fn from(error: uuid::Error) -> Self {
MentatError::UuidError(error)
}
}
impl From<edn::ParseError> for MentatError {
fn from(error: edn::ParseError) -> Self {
MentatError::EdnParseError(error)
}
}
impl From<DbError> for MentatError {
fn from(error: DbError) -> Self {
MentatError::DbError(error)
}
}
impl From<AlgebrizerError> for MentatError {
fn from(error: AlgebrizerError) -> Self {
MentatError::AlgebrizerError(error)
}
}
impl From<ProjectorError> for MentatError {
fn from(error: ProjectorError) -> Self {
MentatError::ProjectorError(error)
}
}
impl From<PullError> for MentatError {
fn from(error: PullError) -> Self {
MentatError::PullError(error)
}
}
impl From<SQLError> for MentatError {
fn from(error: SQLError) -> Self {
MentatError::SQLError(error)
}
}
#[cfg(feature = "syncable")]
impl From<TolstoyError> for MentatError {
fn from(error: TolstoyError) -> Self {
MentatError::TolstoyError(error)
}
}
#[cfg(feature = "syncable")]
impl From<serde_json::Error> for MentatError {
fn from(error: serde_json::Error) -> Self {
MentatError::SerializationError(error)
}
}
#[cfg(feature = "syncable")]
impl From<hyper::Error> for MentatError {
fn from(error: hyper::Error) -> Self {
MentatError::NetworkError(error)
}
}
#[cfg(feature = "syncable")]
impl From<http::uri::InvalidUri> for MentatError {
fn from(error: http::uri::InvalidUri) -> Self {
MentatError::UriError(error)
}
}