Enum aws_sdk_glue::types::BlueprintRunState
source · #[non_exhaustive]pub enum BlueprintRunState {
Failed,
RollingBack,
Running,
Succeeded,
Unknown(UnknownVariantValue),
}
Expand description
When writing a match expression against BlueprintRunState
, 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 blueprintrunstate = unimplemented!();
match blueprintrunstate {
BlueprintRunState::Failed => { /* ... */ },
BlueprintRunState::RollingBack => { /* ... */ },
BlueprintRunState::Running => { /* ... */ },
BlueprintRunState::Succeeded => { /* ... */ },
other @ _ if other.as_str() == "NewFeature" => { /* handles a case for `NewFeature` */ },
_ => { /* ... */ },
}
The above code demonstrates that when blueprintrunstate
represents
NewFeature
, the execution path will lead to the second last match arm,
even though the enum does not contain a variant BlueprintRunState::NewFeature
in the current version of SDK. The reason is that the variable other
,
created by the @
operator, is bound to
BlueprintRunState::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 BlueprintRunState::NewFeature
is defined.
Specifically, when blueprintrunstate
represents NewFeature
,
the execution path will hit the second last match arm as before by virtue of
calling as_str
on BlueprintRunState::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.
Variants (Non-exhaustive)§
This enum is marked as non-exhaustive
Failed
RollingBack
Running
Succeeded
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 BlueprintRunState
impl BlueprintRunState
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 BlueprintRunState
impl AsRef<str> for BlueprintRunState
source§impl Clone for BlueprintRunState
impl Clone for BlueprintRunState
source§fn clone(&self) -> BlueprintRunState
fn clone(&self) -> BlueprintRunState
1.0.0 · source§fn clone_from(&mut self, source: &Self)
fn clone_from(&mut self, source: &Self)
source
. Read moresource§impl Debug for BlueprintRunState
impl Debug for BlueprintRunState
source§impl Display for BlueprintRunState
impl Display for BlueprintRunState
source§impl From<&str> for BlueprintRunState
impl From<&str> for BlueprintRunState
source§impl FromStr for BlueprintRunState
impl FromStr for BlueprintRunState
source§impl Hash for BlueprintRunState
impl Hash for BlueprintRunState
source§impl Ord for BlueprintRunState
impl Ord for BlueprintRunState
source§fn cmp(&self, other: &BlueprintRunState) -> Ordering
fn cmp(&self, other: &BlueprintRunState) -> 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 BlueprintRunState
impl PartialEq for BlueprintRunState
source§fn eq(&self, other: &BlueprintRunState) -> bool
fn eq(&self, other: &BlueprintRunState) -> bool
self
and other
values to be equal, and is used
by ==
.source§impl PartialOrd for BlueprintRunState
impl PartialOrd for BlueprintRunState
source§fn partial_cmp(&self, other: &BlueprintRunState) -> Option<Ordering>
fn partial_cmp(&self, other: &BlueprintRunState) -> 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 BlueprintRunState
impl StructuralPartialEq for BlueprintRunState
Auto Trait Implementations§
impl Freeze for BlueprintRunState
impl RefUnwindSafe for BlueprintRunState
impl Send for BlueprintRunState
impl Sync for BlueprintRunState
impl Unpin for BlueprintRunState
impl UnwindSafe for BlueprintRunState
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