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