Enum DbError 

pub enum DbError {
    Io(Error),
    LogFull,
    Corrupt,
    NotFound,
    Unsupported(&'static str),
}

The unified error type for all DonaDbX operations.

All public methods return DbResult<T>, which is an alias for Result<T, DbError>.

Variants

Io(Error)

An underlying OS I/O error (file open, mmap, read, write, rename, …).

LogFull

The active log has no remaining capacity for the requested write.

This should not occur under normal operation because the segment manager rotates the log before it reaches capacity. If it does occur, increase Config::buffer_size or lower Config::rotate_threshold.

Corrupt

A log record’s magic number or length fields are invalid.

This may indicate file corruption or an incomplete write from a previous crash. The crash-recovery path stops scanning at the first corrupt record, so partial trailing writes are safe.

NotFound

The requested key does not exist in any committed log or sealed segment.

Unsupported(&'static str)

A requested feature or configuration value is not supported.

The attached &'static str identifies which feature was requested.

Trait Implementations

impl Debug for DbError

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

Formats the value using the given formatter.

impl Display for DbError

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

Formats the value using the given formatter.

impl Error for DbError

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 DbError

fn from(source: Error) -> Self

Converts to this type from the input type.