1
 2
 3
 4
 5
 6
 7
 8
 9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38

//! represents all the ways a trait can fail using this crate
use std::error::Error as StdError;

//use derive_more::{error, Error as DeriveError};
use thiserror::Error;

/// Error data structure grouping various error subtypes
#[derive(Debug, Error)]
pub enum DBError {
    /// username is already taken
    #[error("Username not available")]
    DuplicateUsername,

    /// user secret is already taken
    #[error("User secret not available")]
    DuplicateSecret,

    /// email is already taken
    #[error("Email not available")]
    DuplicateEmail,

    /// Account with specified characteristics not found
    #[error("Account with specified characteristics not found")]
    AccountNotFound,

    //    /// errors that are specific to a database implementation
    //    #[error("Database error: {:?}", _0)]
    //    DBError(#[error(not(source))] String),
    /// errors that are specific to a database implementation
    #[error("{0}")]
    DBError(#[source] BoxDynError),
}

/// Convenience type alias for grouping driver-specific errors
pub type BoxDynError = Box<dyn StdError + 'static + Send + Sync>;

/// Generic result data structure
pub type DBResult<V> = std::result::Result<V, DBError>;