flodgatt/src/err.rs

88 lines
2.3 KiB
Rust

use crate::request::RequestErr;
use crate::response::ManagerErr;
use std::fmt;
pub enum FatalErr {
ReceiverErr(ManagerErr),
Logger(log::SetLoggerError),
Postgres(RequestErr),
Unrecoverable,
StdIo(std::io::Error),
// config errs
UrlParse(url::ParseError),
UrlEncoding(urlencoding::FromUrlEncodingError),
ConfigErr(String),
}
impl FatalErr {
pub fn log(msg: impl fmt::Display) {
eprintln!("{}", msg);
}
pub fn config<T: fmt::Display>(var: T, value: T, allowed_vals: T) -> Self {
Self::ConfigErr(format!(
"{0} is set to `{1}`, which is invalid.\n{3:7}{0} must be {2}.",
var, value, allowed_vals, ""
))
}
}
impl std::error::Error for FatalErr {}
impl fmt::Debug for FatalErr {
fn fmt(&self, f: &mut fmt::Formatter) -> Result<(), fmt::Error> {
write!(f, "{}", self)
}
}
impl fmt::Display for FatalErr {
fn fmt(&self, f: &mut fmt::Formatter) -> Result<(), fmt::Error> {
use FatalErr::*;
write!(
f,
"{}",
match self {
ReceiverErr(e) => format!("{}", e),
Logger(e) => format!("{}", e),
StdIo(e) => format!("{}", e),
Postgres(e) => format!("could not connect to Postgres.\n{:7}{}", "", e),
ConfigErr(e) => e.to_string(),
UrlParse(e) => format!("could parse Postgres URL.\n{:7}{}", "", e),
UrlEncoding(e) => format!("could not parse POSTGRES_URL.\n{:7}{:?}", "", e),
Unrecoverable => "Flodgatt will now shut down.".into(),
}
)
}
}
impl From<RequestErr> for FatalErr {
fn from(e: RequestErr) -> Self {
Self::Postgres(e)
}
}
impl From<ManagerErr> for FatalErr {
fn from(e: ManagerErr) -> Self {
Self::ReceiverErr(e)
}
}
impl From<urlencoding::FromUrlEncodingError> for FatalErr {
fn from(e: urlencoding::FromUrlEncodingError) -> Self {
Self::UrlEncoding(e)
}
}
impl From<url::ParseError> for FatalErr {
fn from(e: url::ParseError) -> Self {
Self::UrlParse(e)
}
}
impl From<std::io::Error> for FatalErr {
fn from(e: std::io::Error) -> Self {
Self::StdIo(e)
}
}
impl From<log::SetLoggerError> for FatalErr {
fn from(e: log::SetLoggerError) -> Self {
Self::Logger(e)
}
}