Enum OpenError 

pub enum OpenError {
    Database(DbError),
    Migration(MigrationError),
    CovenMigration(CovenMigrationError),
    Settings(SettingsError),
    Lock(StoreLockError),
    MissingConfiguration {
        field: &'static str,
    },
    Bug(Bug),
}

Opening the database failed: its writer or read-only connections, its lock, its settings or its migrations (§4, E1, E13).

Variants

Database(DbError)

The database failed.

Migration(MigrationError)

An app migration failed or cannot run on this schema.

CovenMigration(CovenMigrationError)

Coven’s internal schema is unsupported or its migration cannot run.

Settings(SettingsError)

The directory’s settings could not be read.

Lock(StoreLockError)

The store’s lock could not be taken.

MissingConfiguration

A required builder choice was not supplied (E1).

Fields

field: &'static str

The missing choice.

Bug(Bug)

Taking the store’s lock panicked: a bug, which the caller reports (E15). Opening’s database work that panicked is DbError::Bug.

Trait Implementations

impl CarriesBug for OpenError

fn bug(&self) -> Option<&Bug>

The bug this error carries, itself or through the failure it keeps.

impl Debug for OpenError

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

Formats the value using the given formatter.

impl Display for OpenError

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

Formats the value using the given formatter.

impl Error for OpenError

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<Bug> for OpenError

fn from(source: Bug) -> Self

Converts to this type from the input type.

impl From<CovenMigrationError> for OpenError

fn from(source: CovenMigrationError) -> Self

Converts to this type from the input type.

impl From<DbError> for OpenError

fn from(source: DbError) -> Self

Converts to this type from the input type.

impl From<Error> for OpenError

fn from(error: Error) -> Self

Converts to this type from the input type.

impl From<MigrationError> for OpenError

fn from(source: MigrationError) -> Self

Converts to this type from the input type.

impl From<SettingsError> for OpenError

fn from(error: SettingsError) -> Self

Converts to this type from the input type.

impl From<StoreLockError> for OpenError

fn from(error: StoreLockError) -> Self

Converts to this type from the input type.