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