Enum aws_sdk_mediaconnect::types::BridgeState
source · #[non_exhaustive]pub enum BridgeState {
Show 13 variants
Active,
Creating,
Deleted,
Deleting,
Deploying,
Standby,
Starting,
StartFailed,
StartPending,
Stopping,
StopFailed,
Updating,
Unknown(UnknownVariantValue),
}
Expand description
When writing a match expression against BridgeState
, 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 bridgestate = unimplemented!();
match bridgestate {
BridgeState::Active => { /* ... */ },
BridgeState::Creating => { /* ... */ },
BridgeState::Deleted => { /* ... */ },
BridgeState::Deleting => { /* ... */ },
BridgeState::Deploying => { /* ... */ },
BridgeState::Standby => { /* ... */ },
BridgeState::Starting => { /* ... */ },
BridgeState::StartFailed => { /* ... */ },
BridgeState::StartPending => { /* ... */ },
BridgeState::Stopping => { /* ... */ },
BridgeState::StopFailed => { /* ... */ },
BridgeState::Updating => { /* ... */ },
other @ _ if other.as_str() == "NewFeature" => { /* handles a case for `NewFeature` */ },
_ => { /* ... */ },
}
The above code demonstrates that when bridgestate
represents
NewFeature
, the execution path will lead to the second last match arm,
even though the enum does not contain a variant BridgeState::NewFeature
in the current version of SDK. The reason is that the variable other
,
created by the @
operator, is bound to
BridgeState::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 BridgeState::NewFeature
is defined.
Specifically, when bridgestate
represents NewFeature
,
the execution path will hit the second last match arm as before by virtue of
calling as_str
on BridgeState::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
Active
Creating
Deleted
Deleting
Deploying
Standby
Starting
StartFailed
StartPending
Stopping
StopFailed
Updating
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 BridgeState
impl BridgeState
source§impl BridgeState
impl BridgeState
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 BridgeState
impl AsRef<str> for BridgeState
source§impl Clone for BridgeState
impl Clone for BridgeState
source§fn clone(&self) -> BridgeState
fn clone(&self) -> BridgeState
1.0.0 · source§fn clone_from(&mut self, source: &Self)
fn clone_from(&mut self, source: &Self)
source
. Read moresource§impl Debug for BridgeState
impl Debug for BridgeState
source§impl Display for BridgeState
impl Display for BridgeState
source§impl From<&str> for BridgeState
impl From<&str> for BridgeState
source§impl FromStr for BridgeState
impl FromStr for BridgeState
source§impl Hash for BridgeState
impl Hash for BridgeState
source§impl Ord for BridgeState
impl Ord for BridgeState
source§fn cmp(&self, other: &BridgeState) -> Ordering
fn cmp(&self, other: &BridgeState) -> 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 BridgeState
impl PartialEq for BridgeState
source§fn eq(&self, other: &BridgeState) -> bool
fn eq(&self, other: &BridgeState) -> bool
self
and other
values to be equal, and is used
by ==
.source§impl PartialOrd for BridgeState
impl PartialOrd for BridgeState
source§fn partial_cmp(&self, other: &BridgeState) -> Option<Ordering>
fn partial_cmp(&self, other: &BridgeState) -> 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 BridgeState
impl StructuralPartialEq for BridgeState
Auto Trait Implementations§
impl Freeze for BridgeState
impl RefUnwindSafe for BridgeState
impl Send for BridgeState
impl Sync for BridgeState
impl Unpin for BridgeState
impl UnwindSafe for BridgeState
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