#[non_exhaustive]pub enum ResourceStatus {
Show 23 variants
CreateComplete,
CreateFailed,
CreateInProgress,
DeleteComplete,
DeleteFailed,
DeleteInProgress,
DeleteSkipped,
ImportComplete,
ImportFailed,
ImportInProgress,
ImportRollbackComplete,
ImportRollbackFailed,
ImportRollbackInProgress,
RollbackComplete,
RollbackFailed,
RollbackInProgress,
UpdateComplete,
UpdateFailed,
UpdateInProgress,
UpdateRollbackComplete,
UpdateRollbackFailed,
UpdateRollbackInProgress,
Unknown(UnknownVariantValue),
}
Expand description
When writing a match expression against ResourceStatus
, 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 resourcestatus = unimplemented!();
match resourcestatus {
ResourceStatus::CreateComplete => { /* ... */ },
ResourceStatus::CreateFailed => { /* ... */ },
ResourceStatus::CreateInProgress => { /* ... */ },
ResourceStatus::DeleteComplete => { /* ... */ },
ResourceStatus::DeleteFailed => { /* ... */ },
ResourceStatus::DeleteInProgress => { /* ... */ },
ResourceStatus::DeleteSkipped => { /* ... */ },
ResourceStatus::ImportComplete => { /* ... */ },
ResourceStatus::ImportFailed => { /* ... */ },
ResourceStatus::ImportInProgress => { /* ... */ },
ResourceStatus::ImportRollbackComplete => { /* ... */ },
ResourceStatus::ImportRollbackFailed => { /* ... */ },
ResourceStatus::ImportRollbackInProgress => { /* ... */ },
ResourceStatus::RollbackComplete => { /* ... */ },
ResourceStatus::RollbackFailed => { /* ... */ },
ResourceStatus::RollbackInProgress => { /* ... */ },
ResourceStatus::UpdateComplete => { /* ... */ },
ResourceStatus::UpdateFailed => { /* ... */ },
ResourceStatus::UpdateInProgress => { /* ... */ },
ResourceStatus::UpdateRollbackComplete => { /* ... */ },
ResourceStatus::UpdateRollbackFailed => { /* ... */ },
ResourceStatus::UpdateRollbackInProgress => { /* ... */ },
other @ _ if other.as_str() == "NewFeature" => { /* handles a case for `NewFeature` */ },
_ => { /* ... */ },
}
The above code demonstrates that when resourcestatus
represents
NewFeature
, the execution path will lead to the second last match arm,
even though the enum does not contain a variant ResourceStatus::NewFeature
in the current version of SDK. The reason is that the variable other
,
created by the @
operator, is bound to
ResourceStatus::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 ResourceStatus::NewFeature
is defined.
Specifically, when resourcestatus
represents NewFeature
,
the execution path will hit the second last match arm as before by virtue of
calling as_str
on ResourceStatus::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
DeleteSkipped
ImportComplete
ImportFailed
ImportInProgress
ImportRollbackComplete
ImportRollbackFailed
ImportRollbackInProgress
RollbackComplete
RollbackFailed
RollbackInProgress
UpdateComplete
UpdateFailed
UpdateInProgress
UpdateRollbackComplete
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 ResourceStatus
impl ResourceStatus
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 ResourceStatus
impl AsRef<str> for ResourceStatus
source§impl Clone for ResourceStatus
impl Clone for ResourceStatus
source§fn clone(&self) -> ResourceStatus
fn clone(&self) -> ResourceStatus
1.0.0 · source§fn clone_from(&mut self, source: &Self)
fn clone_from(&mut self, source: &Self)
source
. Read moresource§impl Debug for ResourceStatus
impl Debug for ResourceStatus
source§impl Display for ResourceStatus
impl Display for ResourceStatus
source§impl From<&str> for ResourceStatus
impl From<&str> for ResourceStatus
source§impl FromStr for ResourceStatus
impl FromStr for ResourceStatus
source§impl Hash for ResourceStatus
impl Hash for ResourceStatus
source§impl Ord for ResourceStatus
impl Ord for ResourceStatus
source§fn cmp(&self, other: &ResourceStatus) -> Ordering
fn cmp(&self, other: &ResourceStatus) -> 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 ResourceStatus
impl PartialEq for ResourceStatus
source§fn eq(&self, other: &ResourceStatus) -> bool
fn eq(&self, other: &ResourceStatus) -> bool
self
and other
values to be equal, and is used
by ==
.source§impl PartialOrd for ResourceStatus
impl PartialOrd for ResourceStatus
source§fn partial_cmp(&self, other: &ResourceStatus) -> Option<Ordering>
fn partial_cmp(&self, other: &ResourceStatus) -> 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 ResourceStatus
impl StructuralPartialEq for ResourceStatus
Auto Trait Implementations§
impl Freeze for ResourceStatus
impl RefUnwindSafe for ResourceStatus
impl Send for ResourceStatus
impl Sync for ResourceStatus
impl Unpin for ResourceStatus
impl UnwindSafe for ResourceStatus
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