MeiliSearch/meilisearch-core/src/error.rs
2020-04-09 17:13:34 +02:00

159 lines
4.9 KiB
Rust

use crate::serde::{DeserializerError, SerializerError};
use serde_json::Error as SerdeJsonError;
use pest::error::Error as PestError;
use crate::filters::Rule;
use std::{error, fmt, io};
pub use bincode::Error as BincodeError;
pub use fst::Error as FstError;
pub use heed::Error as HeedError;
pub use pest::error as pest_error;
pub type MResult<T> = Result<T, Error>;
#[derive(Debug)]
pub enum Error {
Io(io::Error),
IndexAlreadyExists,
MissingPrimaryKey,
SchemaMissing,
WordIndexMissing,
MissingDocumentId,
MaxFieldsLimitExceeded,
Schema(meilisearch_schema::Error),
Zlmdb(heed::Error),
Fst(fst::Error),
SerdeJson(SerdeJsonError),
Bincode(bincode::Error),
Serializer(SerializerError),
Deserializer(DeserializerError),
UnsupportedOperation(UnsupportedOperation),
FilterParseError(PestError<Rule>)
}
impl From<io::Error> for Error {
fn from(error: io::Error) -> Error {
Error::Io(error)
}
}
impl From<PestError<Rule>> for Error {
fn from(error: PestError<Rule>) -> Error {
Error::FilterParseError(error.renamed_rules(|r| {
let s = match r {
Rule::or => "OR",
Rule::and => "AND",
Rule::not => "NOT",
Rule::string => "string",
Rule::word => "word",
Rule::greater => "field > value",
Rule::less => "field < value",
Rule::eq => "field = value",
Rule::leq => "field <= value",
Rule::geq => "field >= value",
Rule::key => "key",
_ => "other",
};
s.to_string()
}))
}
}
impl From<meilisearch_schema::Error> for Error {
fn from(error: meilisearch_schema::Error) -> Error {
Error::Schema(error)
}
}
impl From<HeedError> for Error {
fn from(error: HeedError) -> Error {
Error::Zlmdb(error)
}
}
impl From<FstError> for Error {
fn from(error: FstError) -> Error {
Error::Fst(error)
}
}
impl From<SerdeJsonError> for Error {
fn from(error: SerdeJsonError) -> Error {
Error::SerdeJson(error)
}
}
impl From<BincodeError> for Error {
fn from(error: BincodeError) -> Error {
Error::Bincode(error)
}
}
impl From<SerializerError> for Error {
fn from(error: SerializerError) -> Error {
Error::Serializer(error)
}
}
impl From<DeserializerError> for Error {
fn from(error: DeserializerError) -> Error {
Error::Deserializer(error)
}
}
impl From<UnsupportedOperation> for Error {
fn from(op: UnsupportedOperation) -> Error {
Error::UnsupportedOperation(op)
}
}
impl fmt::Display for Error {
fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
use self::Error::*;
match self {
Io(e) => write!(f, "{}", e),
IndexAlreadyExists => write!(f, "index already exists"),
MissingPrimaryKey => write!(f, "schema cannot be built without a primary key"),
SchemaMissing => write!(f, "this index does not have a schema"),
WordIndexMissing => write!(f, "this index does not have a word index"),
MissingDocumentId => write!(f, "document id is missing"),
MaxFieldsLimitExceeded => write!(f, "maximum number of fields in a document exceeded"),
Schema(e) => write!(f, "schema error; {}", e),
Zlmdb(e) => write!(f, "heed error; {}", e),
Fst(e) => write!(f, "fst error; {}", e),
SerdeJson(e) => write!(f, "serde json error; {}", e),
Bincode(e) => write!(f, "bincode error; {}", e),
Serializer(e) => write!(f, "serializer error; {}", e),
Deserializer(e) => write!(f, "deserializer error; {}", e),
UnsupportedOperation(op) => write!(f, "unsupported operation; {}", op),
FilterParseError(e) => write!(f, "error parsing filter; {}", e),
}
}
}
impl error::Error for Error {}
#[derive(Debug)]
pub enum UnsupportedOperation {
SchemaAlreadyExists,
CannotUpdateSchemaPrimaryKey,
CannotReorderSchemaAttribute,
CanOnlyIntroduceNewSchemaAttributesAtEnd,
CannotRemoveSchemaAttribute,
}
impl fmt::Display for UnsupportedOperation {
fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
use self::UnsupportedOperation::*;
match self {
SchemaAlreadyExists => write!(f, "Cannot update index which already have a schema"),
CannotUpdateSchemaPrimaryKey => write!(f, "Cannot update the primary key of a schema"),
CannotReorderSchemaAttribute => write!(f, "Cannot reorder the attributes of a schema"),
CanOnlyIntroduceNewSchemaAttributesAtEnd => {
write!(f, "Can only introduce new attributes at end of a schema")
}
CannotRemoveSchemaAttribute => write!(f, "Cannot remove attributes from a schema"),
}
}
}