mirror of https://github.com/zkat/cacache-rs.git
64 lines
2.0 KiB
Rust
64 lines
2.0 KiB
Rust
use std::path::PathBuf;
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use miette::Diagnostic;
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use thiserror::Error;
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/// Error type returned by all API calls.
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#[derive(Error, Debug, Diagnostic)]
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pub enum Error {
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/// Returned when an index entry could not be found during
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/// lookup.
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#[error("Entry not found for key {1:?} in cache {0:?}")]
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#[diagnostic(code(cacache::entry_not_found), url(docsrs))]
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EntryNotFound(PathBuf, String),
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/// Returned when a size check has failed.
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#[error("Size check failed.\n\tWanted: {0}\n\tActual: {1}")]
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#[diagnostic(code(cacache::size_mismatch), url(docsrs))]
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SizeMismatch(usize, usize),
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/// Returned when a general IO error has occurred.
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#[error("{1}")]
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#[diagnostic(code(cacache::io_error), url(docsrs))]
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IoError(#[source] std::io::Error, String),
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/// Returned when a general serde error has occurred.
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#[error("{1}")]
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#[diagnostic(code(cacache::serde_error), url(docsrs))]
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SerdeError(#[source] serde_json::Error, String),
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/// Returned when an integrity check has failed.
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#[error(transparent)]
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#[diagnostic(code(cacache::integrity_error), url(docsrs))]
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IntegrityError(#[from] ssri::Error),
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}
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/// The result type returned by calls to this library
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pub type Result<T> = std::result::Result<T, Error>;
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pub trait IoErrorExt<T> {
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fn with_context<F: FnOnce() -> String>(self, f: F) -> Result<T>;
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}
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impl<T> IoErrorExt<T> for std::result::Result<T, std::io::Error> {
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fn with_context<F: FnOnce() -> String>(self, f: F) -> Result<T> {
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match self {
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Ok(t) => Ok(t),
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Err(e) => Err(Error::IoError(e, f())),
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}
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}
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}
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impl<T> IoErrorExt<T> for std::result::Result<T, serde_json::Error> {
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fn with_context<F: FnOnce() -> String>(self, f: F) -> Result<T> {
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match self {
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Ok(t) => Ok(t),
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Err(e) => Err(Error::SerdeError(e, f())),
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}
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}
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}
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pub fn io_error(err: impl Into<Box<dyn std::error::Error + Send + Sync>>) -> std::io::Error {
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std::io::Error::new(std::io::ErrorKind::Other, err)
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}
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