Enum aws_sdk_s3::types::ServerSideEncryption
source · #[non_exhaustive]pub enum ServerSideEncryption {
Aes256,
AwsKms,
AwsKmsDsse,
Unknown(UnknownVariantValue),
}
Expand description
When writing a match expression against ServerSideEncryption
, 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 serversideencryption = unimplemented!();
match serversideencryption {
ServerSideEncryption::Aes256 => { /* ... */ },
ServerSideEncryption::AwsKms => { /* ... */ },
ServerSideEncryption::AwsKmsDsse => { /* ... */ },
other @ _ if other.as_str() == "NewFeature" => { /* handles a case for `NewFeature` */ },
_ => { /* ... */ },
}
The above code demonstrates that when serversideencryption
represents
NewFeature
, the execution path will lead to the second last match arm,
even though the enum does not contain a variant ServerSideEncryption::NewFeature
in the current version of SDK. The reason is that the variable other
,
created by the @
operator, is bound to
ServerSideEncryption::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 ServerSideEncryption::NewFeature
is defined.
Specifically, when serversideencryption
represents NewFeature
,
the execution path will hit the second last match arm as before by virtue of
calling as_str
on ServerSideEncryption::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
Aes256
AwsKms
AwsKmsDsse
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 ServerSideEncryption
impl ServerSideEncryption
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 ServerSideEncryption
impl AsRef<str> for ServerSideEncryption
source§impl Clone for ServerSideEncryption
impl Clone for ServerSideEncryption
source§fn clone(&self) -> ServerSideEncryption
fn clone(&self) -> ServerSideEncryption
1.0.0 · source§fn clone_from(&mut self, source: &Self)
fn clone_from(&mut self, source: &Self)
source
. Read moresource§impl Debug for ServerSideEncryption
impl Debug for ServerSideEncryption
source§impl Display for ServerSideEncryption
impl Display for ServerSideEncryption
source§impl From<&str> for ServerSideEncryption
impl From<&str> for ServerSideEncryption
source§impl FromStr for ServerSideEncryption
impl FromStr for ServerSideEncryption
source§impl Hash for ServerSideEncryption
impl Hash for ServerSideEncryption
source§impl Ord for ServerSideEncryption
impl Ord for ServerSideEncryption
source§fn cmp(&self, other: &ServerSideEncryption) -> Ordering
fn cmp(&self, other: &ServerSideEncryption) -> 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 ServerSideEncryption
impl PartialEq for ServerSideEncryption
source§impl PartialOrd for ServerSideEncryption
impl PartialOrd for ServerSideEncryption
impl Eq for ServerSideEncryption
impl StructuralPartialEq for ServerSideEncryption
Auto Trait Implementations§
impl Freeze for ServerSideEncryption
impl RefUnwindSafe for ServerSideEncryption
impl Send for ServerSideEncryption
impl Sync for ServerSideEncryption
impl Unpin for ServerSideEncryption
impl UnwindSafe for ServerSideEncryption
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<T> CloneToUninit for Twhere
T: Clone,
impl<T> CloneToUninit for Twhere
T: Clone,
source§default unsafe fn clone_to_uninit(&self, dst: *mut T)
default unsafe fn clone_to_uninit(&self, dst: *mut T)
clone_to_uninit
)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.