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use cqrs_core::CqrsError;
use std::fmt;
#[derive(Debug)]
pub enum PersistError<E: CqrsError> {
Postgres(postgres::Error),
PreconditionFailed(cqrs_core::Precondition),
SerializationError(E),
}
impl<E: CqrsError> fmt::Display for PersistError<E> {
fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
match *self {
PersistError::Postgres(ref e) => write!(f, "postgres error: {}", e),
PersistError::PreconditionFailed(ref e) => write!(f, "precondition error: {}", e),
PersistError::SerializationError(ref e) => write!(f, "serialization error: {}", e),
}
}
}
impl<E: CqrsError> From<postgres::Error> for PersistError<E> {
fn from(err: postgres::Error) -> Self {
PersistError::Postgres(err)
}
}
impl<E: CqrsError> From<cqrs_core::Precondition> for PersistError<E> {
fn from(precondition: cqrs_core::Precondition) -> Self {
PersistError::PreconditionFailed(precondition)
}
}
#[derive(Debug)]
pub enum LoadError<E: CqrsError> {
Postgres(postgres::Error),
UnknownEventType(String),
DeserializationError(E),
}
impl<E: CqrsError> fmt::Display for LoadError<E> {
fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
match *self {
LoadError::Postgres(ref e) => write!(f, "postgres error: {}", e),
LoadError::DeserializationError(ref e) => write!(f, "deserialization error: {}", e),
LoadError::UnknownEventType(ref s) => write!(f, "unknown event type: {}", s),
}
}
}
impl<E: CqrsError> From<postgres::Error> for LoadError<E> {
fn from(err: postgres::Error) -> Self {
LoadError::Postgres(err)
}
}