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Superseded,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PipelineExecutionStatus::Superseded =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Superseded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