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Added error handling during dotenv loading

Some issue people report are because of misconfiguration or bad .env
files. To mittigate this i added error handling for this.

- Panic/Quit on a LineParse error, which indicates bad .env file format.
- Emits a info message when there is no .env file found.
- Emits a warning message when there is a .env file, but not no
  permissions.
- Emits a warning on every other message not specifically catched.
This commit is contained in:
BlackDex 2020-11-12 13:40:26 +01:00
parent e25fc7083d
commit d11d663c5c

View file

@ -53,7 +53,32 @@ macro_rules! make_config {
impl ConfigBuilder {
fn from_env() -> Self {
dotenv::from_path(".env").ok();
match dotenv::from_path(".env") {
Ok(_) => (),
Err(e) => match e {
dotenv::Error::LineParse(msg, pos) => {
panic!("Error loading the .env file:\nNear {:?} on position {}\nPlease fix and restart!\n", msg, pos);
},
dotenv::Error::Io(ioerr) => match ioerr.kind() {
std::io::ErrorKind::NotFound => {
println!("[INFO] No .env file found.\n");
()
},
std::io::ErrorKind::PermissionDenied => {
println!("[WARNING] Permission Denied while trying to read the .env file!\n");
()
},
_ => {
println!("[WARNING] Reading the .env file failed:\n{:?}\n", ioerr);
()
}
},
_ => {
println!("[WARNING] Reading the .env file failed:\n{:?}\n", e);
()
}
}
};
let mut builder = ConfigBuilder::default();
$($(