Enum aws_sdk_apprunner::model::ServiceStatus
source · #[non_exhaustive]
pub enum ServiceStatus {
CreateFailed,
Deleted,
DeleteFailed,
OperationInProgress,
Paused,
Running,
Unknown(UnknownVariantValue),
}
Expand description
When writing a match expression against ServiceStatus
, 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 servicestatus = unimplemented!();
match servicestatus {
ServiceStatus::CreateFailed => { /* ... */ },
ServiceStatus::Deleted => { /* ... */ },
ServiceStatus::DeleteFailed => { /* ... */ },
ServiceStatus::OperationInProgress => { /* ... */ },
ServiceStatus::Paused => { /* ... */ },
ServiceStatus::Running => { /* ... */ },
other @ _ if other.as_str() == "NewFeature" => { /* handles a case for `NewFeature` */ },
_ => { /* ... */ },
}
The above code demonstrates that when servicestatus
represents
NewFeature
, the execution path will lead to the second last match arm,
even though the enum does not contain a variant ServiceStatus::NewFeature
in the current version of SDK. The reason is that the variable other
,
created by the @
operator, is bound to
ServiceStatus::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 ServiceStatus::NewFeature
is defined.
Specifically, when servicestatus
represents NewFeature
,
the execution path will hit the second last match arm as before by virtue of
calling as_str
on ServiceStatus::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
CreateFailed
Deleted
DeleteFailed
OperationInProgress
Paused
Running
Unknown(UnknownVariantValue)
Unknown
contains new variants that have been added since this code was generated.
Implementations§
Trait Implementations§
source§impl AsRef<str> for ServiceStatus
impl AsRef<str> for ServiceStatus
source§impl Clone for ServiceStatus
impl Clone for ServiceStatus
source§fn clone(&self) -> ServiceStatus
fn clone(&self) -> ServiceStatus
1.0.0 · source§fn clone_from(&mut self, source: &Self)
fn clone_from(&mut self, source: &Self)
source
. Read moresource§impl Debug for ServiceStatus
impl Debug for ServiceStatus
source§impl From<&str> for ServiceStatus
impl From<&str> for ServiceStatus
source§impl FromStr for ServiceStatus
impl FromStr for ServiceStatus
source§impl Hash for ServiceStatus
impl Hash for ServiceStatus
source§impl Ord for ServiceStatus
impl Ord for ServiceStatus
source§fn cmp(&self, other: &ServiceStatus) -> Ordering
fn cmp(&self, other: &ServiceStatus) -> Ordering
1.21.0 · source§fn max(self, other: Self) -> Selfwhere
Self: Sized,
fn max(self, other: Self) -> Selfwhere
Self: Sized,
source§impl PartialEq<ServiceStatus> for ServiceStatus
impl PartialEq<ServiceStatus> for ServiceStatus
source§fn eq(&self, other: &ServiceStatus) -> bool
fn eq(&self, other: &ServiceStatus) -> bool
self
and other
values to be equal, and is used
by ==
.source§impl PartialOrd<ServiceStatus> for ServiceStatus
impl PartialOrd<ServiceStatus> for ServiceStatus
source§fn partial_cmp(&self, other: &ServiceStatus) -> Option<Ordering>
fn partial_cmp(&self, other: &ServiceStatus) -> 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 ServiceStatus
impl StructuralEq for ServiceStatus
impl StructuralPartialEq for ServiceStatus
Auto Trait Implementations§
impl RefUnwindSafe for ServiceStatus
impl Send for ServiceStatus
impl Sync for ServiceStatus
impl Unpin for ServiceStatus
impl UnwindSafe for ServiceStatus
Blanket Implementations§
source§impl<Q, K> Equivalent<K> for Qwhere
Q: Eq + ?Sized,
K: Borrow<Q> + ?Sized,
impl<Q, K> Equivalent<K> for Qwhere
Q: Eq + ?Sized,
K: Borrow<Q> + ?Sized,
source§fn equivalent(&self, key: &K) -> bool
fn equivalent(&self, key: &K) -> bool
key
and return true
if they are equal.