Enum Error 

#[non_exhaustive]
pub enum Error {
    Io(Error),
    Corruption {
        message: String,
    },
    InvalidFormat {
        message: String,
    },
    UnsupportedFormat {
        message: String,
    },
    CodecUnavailable {
        codec: String,
    },
    Conflict {
        message: String,
    },
    ReadOnly,
    Closed,
    RuntimeBusy {
        message: String,
    },
    BucketMissing {
        name: String,
    },
    InvalidOptions {
        message: String,
    },
    Unsupported {
        feature: &'static str,
    },
    UnsupportedBackend {
        feature: &'static str,
    },
    UnsupportedDurability {
        requested: DurabilityMode,
    },
}

Error returned by database, storage, recovery, and transaction operations.

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.

Io(Error)

Underlying I/O error from the selected storage backend.

Corruption

Durable data failed an integrity or consistency check.

Fields

message: String

Human-readable corruption detail.

InvalidFormat

Bytes could not be decoded as a valid Trine storage record.

Fields

message: String

Human-readable decode failure detail.

UnsupportedFormat

Bytes use a storage format that this crate version does not support.

Fields

message: String

Human-readable unsupported-format detail.

CodecUnavailable

The requested codec is not available in this build.

Fields

codec: String

Codec name or identifier that was requested.

Conflict

An optimistic transaction conflicted with a committed write.

Fields

message: String

Human-readable conflict detail.

ReadOnly

The database was opened read-only and a write was requested.

Closed

The database handle is closed.

RuntimeBusy

The configured runtime cannot accept the requested work now.

Fields

message: String

Human-readable runtime capacity detail.

BucketMissing

A named bucket required by durable metadata was not found.

Fields

name: String

Missing bucket name.

InvalidOptions

Options were invalid or inconsistent.

Fields

message: String

Human-readable options failure detail.

Unsupported

A Trine feature is unavailable in the current runtime or build.

Fields

feature: &'static str

Feature name that is unavailable.

UnsupportedBackend

The selected storage backend does not provide a required capability.

Fields

feature: &'static str

Backend capability that is unavailable.

UnsupportedDurability

The selected storage backend cannot provide the requested durability.

Fields

requested: DurabilityMode

Durability mode requested by the caller.

Implementations

impl Error

pub const fn unsupported(feature: &'static str) -> Self

Creates an unsupported-feature error.

pub const fn unsupported_backend(feature: &'static str) -> Self

Creates an unsupported-backend error.

pub const fn unsupported_durability(requested: DurabilityMode) -> Self

Creates an unsupported-durability error.

pub fn invalid_options(message: impl Into<String>) -> Self

Creates an invalid-options error.

Examples found in repository

examples/user_store.rs (line 138)

fn encode_fields(fields: &[&str]) -> Result<Vec<u8>> {
    let mut bytes = Vec::new();
    for field in fields {
        let len = u32::try_from(field.len())
            .map_err(|_| Error::invalid_options("user field exceeds u32::MAX"))?;
        bytes.extend_from_slice(&len.to_le_bytes());
        bytes.extend_from_slice(field.as_bytes());
    }
    Ok(bytes)
}

examples/event_index.rs (line 139)

fn encode_fields(fields: &[&str]) -> Result<Vec<u8>> {
    let mut bytes = Vec::new();
    for field in fields {
        let len = u32::try_from(field.len())
            .map_err(|_| Error::invalid_options("event field exceeds u32::MAX"))?;
        bytes.extend_from_slice(&len.to_le_bytes());
        bytes.extend_from_slice(field.as_bytes());
    }
    Ok(bytes)
}

pub fn runtime_busy(message: impl Into<String>) -> Self

Creates a runtime-busy error.

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(error: Error) -> Self

Converts to this type from the input type.