Enum exonum::runtime::migrations::InitMigrationError

#[non_exhaustive]pub enum InitMigrationError {
    OldStartVersion {
        min_supported_version: Version,
    },
    FutureStartVersion {
        max_supported_version: Version,
    },
    UnsupportedStart(String),
    NotSupported,
}

Errors that can occur when initiating a data migration. This error indicates that the migration cannot be started.

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.

OldStartVersion

The start version is too far in the past.

Fields of OldStartVersion

min_supported_version: Version

Minimum supported version.

FutureStartVersion

The start version is in the future.

Fields of FutureStartVersion

max_supported_version: Version

Maximum supported version.

UnsupportedStart(String)

The start version falls in the supported lower / upper bounds on versions, but is not supported itself. This can be the case, e.g., for pre-releases.

NotSupported

Data migrations are not supported by the artifact.

Trait Implementations

impl Debug for InitMigrationError

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

Formats the value using the given formatter.

impl Display for InitMigrationError

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

Formats the value using the given formatter.

impl Error for InitMigrationError

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

The lower-level source of this error, if any.

fn backtrace(&self) -> Option<&Backtrace>

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

Returns a stack backtrace, if available, of where this error occurred.

fn description(&self) -> &str

Deprecated since 1.42.0:

use the Display impl or to_string()

if let Err(e) = "xc".parse::<u32>() { // Print e itself, no need for description(). eprintln!("Error: {}", e); }

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

Deprecated since 1.33.0:

replaced by Error::source, which can support downcasting

impl From<InitMigrationError> for ExecutionError

fn from(err: InitMigrationError) -> Self

Performs the conversion.