Enum aws_sdk_cloudformation::types::StackStatus
source · #[non_exhaustive]pub enum StackStatus {
Show 24 variants
CreateComplete,
CreateFailed,
CreateInProgress,
DeleteComplete,
DeleteFailed,
DeleteInProgress,
ImportComplete,
ImportInProgress,
ImportRollbackComplete,
ImportRollbackFailed,
ImportRollbackInProgress,
ReviewInProgress,
RollbackComplete,
RollbackFailed,
RollbackInProgress,
UpdateComplete,
UpdateCompleteCleanupInProgress,
UpdateFailed,
UpdateInProgress,
UpdateRollbackComplete,
UpdateRollbackCompleteCleanupInProgress,
UpdateRollbackFailed,
UpdateRollbackInProgress,
Unknown(UnknownVariantValue),
}
Expand description
When writing a match expression against StackStatus
, 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 stackstatus = unimplemented!();
match stackstatus {
StackStatus::CreateComplete => { /* ... */ },
StackStatus::CreateFailed => { /* ... */ },
StackStatus::CreateInProgress => { /* ... */ },
StackStatus::DeleteComplete => { /* ... */ },
StackStatus::DeleteFailed => { /* ... */ },
StackStatus::DeleteInProgress => { /* ... */ },
StackStatus::ImportComplete => { /* ... */ },
StackStatus::ImportInProgress => { /* ... */ },
StackStatus::ImportRollbackComplete => { /* ... */ },
StackStatus::ImportRollbackFailed => { /* ... */ },
StackStatus::ImportRollbackInProgress => { /* ... */ },
StackStatus::ReviewInProgress => { /* ... */ },
StackStatus::RollbackComplete => { /* ... */ },
StackStatus::RollbackFailed => { /* ... */ },
StackStatus::RollbackInProgress => { /* ... */ },
StackStatus::UpdateComplete => { /* ... */ },
StackStatus::UpdateCompleteCleanupInProgress => { /* ... */ },
StackStatus::UpdateFailed => { /* ... */ },
StackStatus::UpdateInProgress => { /* ... */ },
StackStatus::UpdateRollbackComplete => { /* ... */ },
StackStatus::UpdateRollbackCompleteCleanupInProgress => { /* ... */ },
StackStatus::UpdateRollbackFailed => { /* ... */ },
StackStatus::UpdateRollbackInProgress => { /* ... */ },
other @ _ if other.as_str() == "NewFeature" => { /* handles a case for `NewFeature` */ },
_ => { /* ... */ },
}
The above code demonstrates that when stackstatus
represents
NewFeature
, the execution path will lead to the second last match arm,
even though the enum does not contain a variant StackStatus::NewFeature
in the current version of SDK. The reason is that the variable other
,
created by the @
operator, is bound to
StackStatus::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 StackStatus::NewFeature
is defined.
Specifically, when stackstatus
represents NewFeature
,
the execution path will hit the second last match arm as before by virtue of
calling as_str
on StackStatus::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
CreateComplete
CreateFailed
CreateInProgress
DeleteComplete
DeleteFailed
DeleteInProgress
ImportComplete
ImportInProgress
ImportRollbackComplete
ImportRollbackFailed
ImportRollbackInProgress
ReviewInProgress
RollbackComplete
RollbackFailed
RollbackInProgress
UpdateComplete
UpdateCompleteCleanupInProgress
UpdateFailed
UpdateInProgress
UpdateRollbackComplete
UpdateRollbackCompleteCleanupInProgress
UpdateRollbackFailed
UpdateRollbackInProgress
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 StackStatus
impl StackStatus
source§impl StackStatus
impl StackStatus
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 StackStatus
impl AsRef<str> for StackStatus
source§impl Clone for StackStatus
impl Clone for StackStatus
source§fn clone(&self) -> StackStatus
fn clone(&self) -> StackStatus
1.0.0 · source§fn clone_from(&mut self, source: &Self)
fn clone_from(&mut self, source: &Self)
source
. Read moresource§impl Debug for StackStatus
impl Debug for StackStatus
source§impl Display for StackStatus
impl Display for StackStatus
source§impl From<&str> for StackStatus
impl From<&str> for StackStatus
source§impl FromStr for StackStatus
impl FromStr for StackStatus
source§impl Hash for StackStatus
impl Hash for StackStatus
source§impl Ord for StackStatus
impl Ord for StackStatus
source§fn cmp(&self, other: &StackStatus) -> Ordering
fn cmp(&self, other: &StackStatus) -> 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 StackStatus
impl PartialEq for StackStatus
source§fn eq(&self, other: &StackStatus) -> bool
fn eq(&self, other: &StackStatus) -> bool
self
and other
values to be equal, and is used
by ==
.source§impl PartialOrd for StackStatus
impl PartialOrd for StackStatus
source§fn partial_cmp(&self, other: &StackStatus) -> Option<Ordering>
fn partial_cmp(&self, other: &StackStatus) -> 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 StackStatus
impl StructuralPartialEq for StackStatus
Auto Trait Implementations§
impl Freeze for StackStatus
impl RefUnwindSafe for StackStatus
impl Send for StackStatus
impl Sync for StackStatus
impl Unpin for StackStatus
impl UnwindSafe for StackStatus
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