#[non_exhaustive]
pub enum StageRetryMode {
FailedActions,
Unknown(UnknownVariantValue),
}
Expand description
When writing a match expression against StageRetryMode
, 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 stageretrymode = unimplemented!();
match stageretrymode {
StageRetryMode::FailedActions => { /* ... */ },
other @ _ if other.as_str() == "NewFeature" => { /* handles a case for `NewFeature` */ },
_ => { /* ... */ },
}
The above code demonstrates that when stageretrymode
represents
NewFeature
, the execution path will lead to the second last match arm,
even though the enum does not contain a variant StageRetryMode::NewFeature
in the current version of SDK. The reason is that the variable other
,
created by the @
operator, is bound to
StageRetryMode::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 StageRetryMode::NewFeature
is defined.
Specifically, when stageretrymode
represents NewFeature
,
the execution path will hit the second last match arm as before by virtue of
calling as_str
on StageRetryMode::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
FailedActions
Unknown(UnknownVariantValue)
Unknown
contains new variants that have been added since this code was generated.
Implementations§
source§impl StageRetryMode
impl StageRetryMode
sourcepub fn as_str(&self) -> &str
pub fn as_str(&self) -> &str
Returns the &str
value of the enum member.
Examples found in repository?
More examples
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pub fn serialize_structure_crate_input_retry_stage_execution_input(
object: &mut aws_smithy_json::serialize::JsonObjectWriter,
input: &crate::input::RetryStageExecutionInput,
) -> Result<(), aws_smithy_http::operation::error::SerializationError> {
if let Some(var_124) = &input.pipeline_name {
object.key("pipelineName").string(var_124.as_str());
}
if let Some(var_125) = &input.stage_name {
object.key("stageName").string(var_125.as_str());
}
if let Some(var_126) = &input.pipeline_execution_id {
object.key("pipelineExecutionId").string(var_126.as_str());
}
if let Some(var_127) = &input.retry_mode {
object.key("retryMode").string(var_127.as_str());
}
Ok(())
}
Trait Implementations§
source§impl AsRef<str> for StageRetryMode
impl AsRef<str> for StageRetryMode
source§impl Clone for StageRetryMode
impl Clone for StageRetryMode
source§fn clone(&self) -> StageRetryMode
fn clone(&self) -> StageRetryMode
1.0.0 · source§fn clone_from(&mut self, source: &Self)
fn clone_from(&mut self, source: &Self)
source
. Read moresource§impl Debug for StageRetryMode
impl Debug for StageRetryMode
source§impl From<&str> for StageRetryMode
impl From<&str> for StageRetryMode
source§impl FromStr for StageRetryMode
impl FromStr for StageRetryMode
source§impl Hash for StageRetryMode
impl Hash for StageRetryMode
source§impl Ord for StageRetryMode
impl Ord for StageRetryMode
source§fn cmp(&self, other: &StageRetryMode) -> Ordering
fn cmp(&self, other: &StageRetryMode) -> Ordering
1.21.0 · source§fn max(self, other: Self) -> Selfwhere
Self: Sized,
fn max(self, other: Self) -> Selfwhere
Self: Sized,
source§impl PartialEq<StageRetryMode> for StageRetryMode
impl PartialEq<StageRetryMode> for StageRetryMode
source§fn eq(&self, other: &StageRetryMode) -> bool
fn eq(&self, other: &StageRetryMode) -> bool
source§impl PartialOrd<StageRetryMode> for StageRetryMode
impl PartialOrd<StageRetryMode> for StageRetryMode
source§fn partial_cmp(&self, other: &StageRetryMode) -> Option<Ordering>
fn partial_cmp(&self, other: &StageRetryMode) -> 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 StageRetryMode
impl StructuralEq for StageRetryMode
impl StructuralPartialEq for StageRetryMode
Auto Trait Implementations§
impl RefUnwindSafe for StageRetryMode
impl Send for StageRetryMode
impl Sync for StageRetryMode
impl Unpin for StageRetryMode
impl UnwindSafe for StageRetryMode
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.