Enum Error 

#[non_exhaustive]
pub enum Error {
    Index(IqdbError),
    Persist(PersistError),
    Config(&'static str),
}

An error from any iqdb operation.

The enum is #[non_exhaustive]: a match on it must include a wildcard arm, and future releases may add variants without that being a breaking change.

Variants (Non-exhaustive)

Non-exhaustive enums could have additional variants added in future. Therefore, when matching against variants of non-exhaustive enums, an extra wildcard arm must be added to account for any future variants.

Index(IqdbError)

A failure from the index / vocabulary layer — a dimension mismatch, an absent id, an invalid metric for the chosen index, and so on. See iqdb_types::IqdbError for the full set of causes.

Persist(PersistError)

A failure from the durable-storage layer — snapshot or write-ahead-log I/O, a corrupt or truncated on-disk file, a checksum mismatch, or an unsupported compression feature. See iqdb_persist::PersistError.

Config(&'static str)

A handle-level configuration or consistency check failed. reason is a short static description (for example, that a reopened database’s dim or metric does not match the value passed to open).

Trait Implementations

impl Debug for Error

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Display for Error

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Error for Error

fn source(&self) -> Option<&(dyn Error + 'static)>

Returns the lower-level source of this error, if any.

fn description(&self) -> &str

👎Deprecated since 1.42.0:

use the Display impl or to_string()

fn cause(&self) -> Option<&dyn Error>

👎Deprecated since 1.33.0:

replaced by Error::source, which can support downcasting

fn provide<'a>(&'a self, request: &mut Request<'a>)

🔬This is a nightly-only experimental API. (error_generic_member_access)

Provides type-based access to context intended for error reports.

impl From<IqdbError> for Error

fn from(value: IqdbError) -> Self

Converts to this type from the input type.

impl From<PersistError> for Error

fn from(value: PersistError) -> Self

Converts to this type from the input type.