Enum QueryError 

pub enum QueryError {
    InvalidQuery(Box<ErrorContext>),
    Io(Box<ErrorContext>),
    Decode(Box<ErrorContext>),
    Unavailable(Box<ErrorContext>),
    Shutdown,
}

Stable shared error contract for historical query and follow operations.

Variants

InvalidQuery(Box<ErrorContext>)

The query contract was invalid before execution.

Io(Box<ErrorContext>)

I/O failed while reading log data.

Decode(Box<ErrorContext>)

A JSONL record failed to decode.

Unavailable(Box<ErrorContext>)

Query or follow is unavailable in the current runtime state.

Shutdown

The query runtime was shut down.

Implementations

impl QueryError

pub fn code(&self) -> ErrorCode

Returns the stable machine-readable error code for this variant.

pub fn diagnostic(&self) -> &Diagnostic

Returns the attached diagnostic for the error.

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

Builds an invalid-query error using the stable shared code.

Trait Implementations

impl Debug for QueryError

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

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for QueryError

fn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error>

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl DiagnosticInfo for QueryError

fn diagnostic(&self) -> &Diagnostic

Returns the structured diagnostic attached to this error surface.

impl Display for QueryError

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

Formats the value using the given formatter.

impl Error for QueryError

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 PartialEq for QueryError

fn eq(&self, other: &QueryError) -> 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 Serialize for QueryError

fn serialize<__S>(&self, __serializer: __S) -> Result<__S::Ok, __S::Error>

where __S: Serializer,

Serialize this value into the given Serde serializer.

impl StructuralPartialEq for QueryError