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https://gitlab.computer.surgery/matrix/grapevine.git
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73 lines
2.3 KiB
Rust
73 lines
2.3 KiB
Rust
//! Error handling facilities
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use std::{fmt, iter};
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use thiserror::Error;
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/// Formats an [`Error`][0] and its [`source`][1]s with a separator
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///
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/// [0]: std::error::Error
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/// [1]: std::error::Error::source
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pub(crate) struct DisplayWithSources<'a> {
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/// The error (and its sources) to write
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pub(crate) error: &'a dyn std::error::Error,
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/// Separator to write between the original error and subsequent sources
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pub(crate) infix: &'static str,
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}
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impl fmt::Display for DisplayWithSources<'_> {
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fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
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write!(f, "{}", self.error)?;
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let mut source = self.error.source();
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source
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.into_iter()
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.chain(iter::from_fn(|| {
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source = source.and_then(std::error::Error::source);
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source
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}))
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.try_for_each(|source| write!(f, "{}{source}", self.infix))
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}
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}
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/// Top-level errors
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// Missing docs are allowed here since that kind of information should be
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// encoded in the error messages themselves anyway.
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#[allow(missing_docs)]
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#[derive(Error, Debug)]
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pub(crate) enum Main {
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#[error("invalid configuration")]
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ConfigInvalid(#[from] figment::Error),
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#[error("failed to initialize observability")]
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Observability(#[from] Observability),
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#[error("failed to load or create the database")]
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DatabaseError(#[source] crate::utils::error::Error),
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#[error("failed to serve requests")]
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Serve(#[source] std::io::Error),
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}
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/// Observability initialization errors
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// Missing docs are allowed here since that kind of information should be
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// encoded in the error messages themselves anyway.
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#[allow(missing_docs)]
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#[derive(Error, Debug)]
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pub(crate) enum Observability {
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// Upstream's documentation on what this error means is very sparse
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#[error("opentelemetry error")]
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Otel(#[from] opentelemetry::trace::TraceError),
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#[error("invalid log filter syntax")]
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EnvFilter(#[from] tracing_subscriber::filter::ParseError),
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#[error("failed to install global default tracing subscriber")]
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SetSubscriber(#[from] tracing::subscriber::SetGlobalDefaultError),
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// Upstream's documentation on what this error means is very sparse
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#[error("tracing_flame error")]
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TracingFlame(#[from] tracing_flame::Error),
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}
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