Enum Error

pub enum Error {
    ApiCallFailed(ApiErrorResponse),
    DownloadFailed(String),
    ParsingFailed(String),
    IoError(String),
}

Crate-wide error value. This enumerate the only four possible source of failures in this crate.

Variants

ApiCallFailed(ApiErrorResponse)

Is returned when Quandl’s reply to a query with an error. The contained ApiErrorResponse contains very verbose information about what went wrong with any specific query.

DownloadFailed(String)

Is returned when a problem occurs while exchanging informaiton with the Quandl’s servers. It could mean the Internet connection was lost, that the remote server closed the connection unexpectedly, etc.

Unfortunately, the current implementation for network connection (hyper) has very weak error reporting and thus might leave the user confused as to why such an error is returned.

ParsingFailed(String)

Is returned when the received value, assuming Quandl didn’t respond with an error and that there was no download error, breaks one of the parsers’ assumption. Most of the time it would be an error from rustc_serialize (which also does not report very meaningful errors unfortunately) or it could also be a custom message from this library for data which didn’t met the format deserializable by the rustc_serialize crate.

IoError(String)

Is returned when an I/O operation fails. This last error is highly system-dependant and again, the error message string returned are not always very verbose.

Trait Implementations

impl Clone for Error

fn clone(&self) -> Error

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

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, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Error for Error

fn description(&self) -> &str

👎Deprecated since 1.42.0: use the Display impl or to_string()

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

Returns the lower-level source of this error, if any.

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 PartialEq for Error

fn eq(&self, other: &Error) -> bool

Tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl StructuralPartialEq for Error