Enum aws_sdk_cloudwatchlogs::types::QueryStatus
source · #[non_exhaustive]pub enum QueryStatus {
Cancelled,
Complete,
Failed,
Running,
Scheduled,
Timeout,
UnknownValue,
Unknown(UnknownVariantValue),
}
Expand description
When writing a match expression against QueryStatus
, it is important to ensure
your code is forward-compatible. That is, if a match arm handles a case for a
feature that is supported by the service but has not been represented as an enum
variant in a current version of SDK, your code should continue to work when you
upgrade SDK to a future version in which the enum does include a variant for that
feature.
Here is an example of how you can make a match expression forward-compatible:
# let querystatus = unimplemented!();
match querystatus {
QueryStatus::Cancelled => { /* ... */ },
QueryStatus::Complete => { /* ... */ },
QueryStatus::Failed => { /* ... */ },
QueryStatus::Running => { /* ... */ },
QueryStatus::Scheduled => { /* ... */ },
QueryStatus::Timeout => { /* ... */ },
QueryStatus::UnknownValue => { /* ... */ },
other @ _ if other.as_str() == "NewFeature" => { /* handles a case for `NewFeature` */ },
_ => { /* ... */ },
}
The above code demonstrates that when querystatus
represents
NewFeature
, the execution path will lead to the second last match arm,
even though the enum does not contain a variant QueryStatus::NewFeature
in the current version of SDK. The reason is that the variable other
,
created by the @
operator, is bound to
QueryStatus::Unknown(UnknownVariantValue("NewFeature".to_owned()))
and calling as_str
on it yields "NewFeature"
.
This match expression is forward-compatible when executed with a newer
version of SDK where the variant QueryStatus::NewFeature
is defined.
Specifically, when querystatus
represents NewFeature
,
the execution path will hit the second last match arm as before by virtue of
calling as_str
on QueryStatus::NewFeature
also yielding "NewFeature"
.
Explicitly matching on the Unknown
variant should
be avoided for two reasons:
- The inner data
UnknownVariantValue
is opaque, and no further information can be extracted. - It might inadvertently shadow other intended match arms.
Note:
QueryStatus::Unknown
has been renamed to::UnknownValue
.
Variants (Non-exhaustive)§
This enum is marked as non-exhaustive
Cancelled
Complete
Failed
Running
Scheduled
Timeout
UnknownValue
Note: ::Unknown
has been renamed to ::UnknownValue
.
Unknown(UnknownVariantValue)
Unknown
. See the docs on this enum for the correct way to handle unknown variants.Unknown
contains new variants that have been added since this code was generated.
Implementations§
source§impl QueryStatus
impl QueryStatus
source§impl QueryStatus
impl QueryStatus
sourcepub fn try_parse(value: &str) -> Result<Self, UnknownVariantError>
pub fn try_parse(value: &str) -> Result<Self, UnknownVariantError>
Parses the enum value while disallowing unknown variants.
Unknown variants will result in an error.
Trait Implementations§
source§impl AsRef<str> for QueryStatus
impl AsRef<str> for QueryStatus
source§impl Clone for QueryStatus
impl Clone for QueryStatus
source§fn clone(&self) -> QueryStatus
fn clone(&self) -> QueryStatus
1.0.0 · source§fn clone_from(&mut self, source: &Self)
fn clone_from(&mut self, source: &Self)
source
. Read moresource§impl Debug for QueryStatus
impl Debug for QueryStatus
source§impl Display for QueryStatus
impl Display for QueryStatus
source§impl From<&str> for QueryStatus
impl From<&str> for QueryStatus
source§impl FromStr for QueryStatus
impl FromStr for QueryStatus
source§impl Hash for QueryStatus
impl Hash for QueryStatus
source§impl Ord for QueryStatus
impl Ord for QueryStatus
source§fn cmp(&self, other: &QueryStatus) -> Ordering
fn cmp(&self, other: &QueryStatus) -> Ordering
1.21.0 · source§fn max(self, other: Self) -> Selfwhere
Self: Sized,
fn max(self, other: Self) -> Selfwhere
Self: Sized,
source§impl PartialEq for QueryStatus
impl PartialEq for QueryStatus
source§fn eq(&self, other: &QueryStatus) -> bool
fn eq(&self, other: &QueryStatus) -> bool
self
and other
values to be equal, and is used
by ==
.source§impl PartialOrd for QueryStatus
impl PartialOrd for QueryStatus
source§fn partial_cmp(&self, other: &QueryStatus) -> Option<Ordering>
fn partial_cmp(&self, other: &QueryStatus) -> Option<Ordering>
1.0.0 · source§fn le(&self, other: &Rhs) -> bool
fn le(&self, other: &Rhs) -> bool
self
and other
) and is used by the <=
operator. Read moreimpl Eq for QueryStatus
impl StructuralPartialEq for QueryStatus
Auto Trait Implementations§
impl Freeze for QueryStatus
impl RefUnwindSafe for QueryStatus
impl Send for QueryStatus
impl Sync for QueryStatus
impl Unpin for QueryStatus
impl UnwindSafe for QueryStatus
Blanket Implementations§
source§impl<T> BorrowMut<T> for Twhere
T: ?Sized,
impl<T> BorrowMut<T> for Twhere
T: ?Sized,
source§fn borrow_mut(&mut self) -> &mut T
fn borrow_mut(&mut self) -> &mut T
source§impl<Q, K> Comparable<K> for Q
impl<Q, K> Comparable<K> for Q
source§impl<Q, K> Equivalent<K> for Q
impl<Q, K> Equivalent<K> for Q
source§impl<Q, K> Equivalent<K> for Q
impl<Q, K> Equivalent<K> for Q
source§fn equivalent(&self, key: &K) -> bool
fn equivalent(&self, key: &K) -> bool
key
and return true
if they are equal.source§impl<T> Instrument for T
impl<T> Instrument for T
source§fn instrument(self, span: Span) -> Instrumented<Self>
fn instrument(self, span: Span) -> Instrumented<Self>
source§fn in_current_span(self) -> Instrumented<Self>
fn in_current_span(self) -> Instrumented<Self>
source§impl<T> IntoEither for T
impl<T> IntoEither for T
source§fn into_either(self, into_left: bool) -> Either<Self, Self>
fn into_either(self, into_left: bool) -> Either<Self, Self>
self
into a Left
variant of Either<Self, Self>
if into_left
is true
.
Converts self
into a Right
variant of Either<Self, Self>
otherwise. Read moresource§fn into_either_with<F>(self, into_left: F) -> Either<Self, Self>
fn into_either_with<F>(self, into_left: F) -> Either<Self, Self>
self
into a Left
variant of Either<Self, Self>
if into_left(&self)
returns true
.
Converts self
into a Right
variant of Either<Self, Self>
otherwise. Read more