use std::fmt;
#[cfg(feature = "bb8_postgres")]
use bb8_postgres::tokio_postgres::Error as PostgresError;
#[cfg(all(feature = "r2d2_postgres", not(feature = "bb8_postgres")))]
use r2d2_postgres::postgres::Error as PostgresError;
#[cfg(feature = "r2d2_sqlite")]
use r2d2_sqlite::rusqlite::Error as RusqliteError;
#[cfg(feature = "r2d2_mysql")]
use r2d2_mysql::mysql::Error as MysqlError;
pub type Result<T> = std::result::Result<T, Error>;
#[deprecated]
#[allow(clippy::module_name_repetitions)]
pub use Error as PersistenceError;
#[derive(Debug)]
pub enum Error {
GetConnection,
#[cfg(feature = "nightly")]
UpgradeToTransaction,
#[cfg(feature = "nightly")]
UpgradeToNestedTransaction,
#[cfg(feature = "nightly")]
CommitTransaction,
#[cfg(feature = "nightly")]
RollbackTransaction,
PersistenceError(Box<dyn std::error::Error>),
}
impl fmt::Display for Error {
fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
match self {
Error::GetConnection => f.write_str("Cannot get connection"),
#[cfg(feature = "nightly")]
Error::UpgradeToTransaction => f.write_str("Cannot upgrade connection to transaction"),
#[cfg(feature = "nightly")]
Error::UpgradeToNestedTransaction => {
f.write_str("Cannot upgrade transaction to a nested one")
}
#[cfg(feature = "nightly")]
Error::CommitTransaction => f.write_str("Cannot commit changes of transaction"),
#[cfg(feature = "nightly")]
Error::RollbackTransaction => f.write_str("Cannot rolls transaction back"),
Error::PersistenceError(err) => write!(f, "DbError: {}", err),
}
}
}
impl std::error::Error for Error {}
#[cfg(any(feature = "r2d2_postgres", feature = "bb8_postgres"))]
impl From<PostgresError> for Error {
fn from(err: PostgresError) -> Self {
Self::PersistenceError(Box::new(err))
}
}
#[cfg(feature = "r2d2_sqlite")]
impl From<RusqliteError> for Error {
fn from(err: RusqliteError) -> Self {
Self::PersistenceError(Box::new(err))
}
}
#[cfg(feature = "r2d2_mysql")]
impl From<MysqlError> for Error {
fn from(err: MysqlError) -> Self {
Self::PersistenceError(Box::new(err))
}
}