Enum DatasetError 

pub enum DatasetError {
    Download {
        url: &'static str,
        source: Error,
    },
    Io {
        path: PathBuf,
        source: Error,
    },
    Format {
        dataset_id: &'static str,
        line_number: usize,
        message: String,
    },
    InvalidSelection {
        dataset_id: &'static str,
        message: String,
    },
}

Errors raised while fetching and materializing datasets.

Variants

Download

The HTTP download failed.

Fields

url: &'static str

The upstream URL.

source: Error

The underlying transport or HTTP error.

Io

The on-disk materialization step failed.

Fields

path: PathBuf

The path being read or written.

source: Error

The underlying filesystem error.

Format

The dataset contents did not match the expected record layout.

Fields

dataset_id: &'static str

The dataset identifier.

line_number: usize

The 1-based line number within the materialized dataset file.

message: String

A human-readable explanation of the malformed record.

InvalidSelection

The requested dataset subset is not valid.

Fields

dataset_id: &'static str

The dataset identifier.

message: String

A human-readable explanation of the invalid selection.

Trait Implementations

impl Debug for DatasetError

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

Formats the value using the given formatter.

impl Display for DatasetError

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

Formats the value using the given formatter.

impl Error for DatasetError

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.