94 lines
2.6 KiB
Rust
94 lines
2.6 KiB
Rust
//! Actor errors.
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use super::actor::AnyValue;
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use super::language;
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use super::schemas::protocol as P;
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use preserves::value::NestedValue;
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use preserves::value::Value;
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use preserves_schema::Codec;
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use preserves_schema::ParseError;
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pub type Error = P::Error<AnyValue>;
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impl std::error::Error for Error {}
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impl std::fmt::Display for Error {
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fn fmt(&self, f: &mut std::fmt::Formatter) -> Result<(), std::fmt::Error> {
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write!(f, "Error: {}; detail: {:?}", self.message, self.detail)
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}
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}
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/// Construct an [`Error`] with the given `message` and `detail`.
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///
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/// When no relevant detail exists, convention is to set `detail` to `false`.
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pub fn error<Detail>(message: &str, detail: Detail) -> Error where AnyValue: From<Detail> {
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Error {
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message: message.to_owned(),
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detail: AnyValue::from(detail),
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}
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}
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/// Encodes an [`ActorResult`][crate::actor::ActorResult] as an
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/// [`AnyValue`][crate::actor::AnyValue].
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///
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/// Used primarily when attempting to perform an
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/// [`Activation`][crate::actor::Activation] on an already-terminated
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/// actor.
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pub fn encode_error(result: Result<(), Error>) -> AnyValue {
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match result {
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Ok(()) => {
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let mut r = Value::record(AnyValue::symbol("Ok"), 1);
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r.fields_vec_mut().push(Value::record(AnyValue::symbol("tuple"), 0).finish().wrap());
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r.finish().wrap()
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}
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Err(e) => {
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let mut r = Value::record(AnyValue::symbol("Err"), 1);
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r.fields_vec_mut().push(language().unparse(&e));
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r.finish().wrap()
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}
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}
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}
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impl<'a> From<&'a str> for Error {
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fn from(v: &'a str) -> Self {
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error(v, AnyValue::new(false))
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}
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}
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impl From<std::io::Error> for Error {
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fn from(v: std::io::Error) -> Self {
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error(&format!("{}", v), AnyValue::new(false))
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}
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}
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impl From<ParseError> for Error {
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fn from(v: ParseError) -> Self {
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error(&format!("{}", v), AnyValue::new(false))
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}
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}
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impl From<preserves::error::Error> for Error {
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fn from(v: preserves::error::Error) -> Self {
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error(&format!("{}", v), AnyValue::new(false))
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}
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}
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impl From<Box<dyn std::error::Error>> for Error {
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fn from(v: Box<dyn std::error::Error>) -> Self {
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match v.downcast::<Error>() {
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Ok(e) => *e,
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Err(v) => error(&format!("{}", v), AnyValue::new(false)),
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}
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}
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}
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impl From<Box<dyn std::error::Error + Send + Sync + 'static>> for Error {
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fn from(v: Box<dyn std::error::Error + Send + Sync + 'static>) -> Self {
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match v.downcast::<Error>() {
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Ok(e) => *e,
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Err(v) => error(&format!("{}", v), AnyValue::new(false)),
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}
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}
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}
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