Enum Error 

pub enum Error {
    StorageError(Error),
    ApiError(Error),
    Conflict(String),
    DatabaseError(Error),
    InternalError(Error),
    ModelError(Error),
}

The top-level application error.

This is the single error type returned by all route handlers via crate::Result<T>. It acts as the central hub that aggregates errors from every domain in the application (API layer, storage layer, model layer) through From implementations generated by thiserror.

How errors flow

When a route handler uses the ? operator, errors bubble up through the following chain:

model::Error  ──┐
storage::Error ──┼──► Error ──► IntoResponse (sanitized HTTP response)
api::Error   ───┘

The IntoResponse implementation here is the single point of truth for what the HTTP client is allowed to see. It logs the full internal error (for the server admin) and then delegates to each domain’s own IntoResponse to produce a sanitized response.

Variants

StorageError(Error)

A storage layer error, typically a filesystem or CAS transaction failure.

ApiError(Error)

An API layer error, typically a bad request or auth failure from a route handler.

Conflict(String)

A conflict at the application level, such as a duplicate user registration. This is distinct from a database uniqueness error — it is raised intentionally by business logic in route handlers.

DatabaseError(Error)

A raw database error that was not caught and converted by the model layer. In practice this should be rare, as most DB queries go through model::Error.

InternalError(Error)

A low-level internal error, typically from integer or time conversions.

ModelError(Error)

A model layer error, covering database query results and domain-specific failures (e.g., asset not found, uniqueness violations).

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, __formatter: &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<Error> for Error

fn from(source: Error) -> Self

Converts to this type from the input type.

impl From<Error> for Error

fn from(source: Error) -> Self

Converts to this type from the input type.

impl From<Error> for Error

fn from(source: Error) -> Self

Converts to this type from the input type.

impl From<Error> for Error

fn from(source: Error) -> Self

Converts to this type from the input type.

impl From<Error> for Error

fn from(source: Error) -> Self

Converts to this type from the input type.

impl From<SystemTimeError> for Error

fn from(e: SystemTimeError) -> Self

Converts to this type from the input type.

impl From<TryFromIntError> for Error

fn from(e: TryFromIntError) -> Self

Converts to this type from the input type.

impl IntoResponse for Error

fn into_response(self) -> Response

Create a response.

impl Loggable for Error

fn log_level(&self) -> Level

Returns the severity level that should be assigned to this error in the log.

fn log_module(&self) -> Module

Returns the server module responsible for this error.