#[non_exhaustive]pub enum CmafKeyProviderType {
Speke,
StaticKey,
Unknown(UnknownVariantValue),
}
Expand description
When writing a match expression against CmafKeyProviderType
, 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 cmafkeyprovidertype = unimplemented!();
match cmafkeyprovidertype {
CmafKeyProviderType::Speke => { /* ... */ },
CmafKeyProviderType::StaticKey => { /* ... */ },
other @ _ if other.as_str() == "NewFeature" => { /* handles a case for `NewFeature` */ },
_ => { /* ... */ },
}
The above code demonstrates that when cmafkeyprovidertype
represents
NewFeature
, the execution path will lead to the second last match arm,
even though the enum does not contain a variant CmafKeyProviderType::NewFeature
in the current version of SDK. The reason is that the variable other
,
created by the @
operator, is bound to
CmafKeyProviderType::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 CmafKeyProviderType::NewFeature
is defined.
Specifically, when cmafkeyprovidertype
represents NewFeature
,
the execution path will hit the second last match arm as before by virtue of
calling as_str
on CmafKeyProviderType::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. Specify whether your DRM encryption key is static or from a key provider that follows the SPEKE standard. For more information about SPEKE, see https://docs.aws.amazon.com/speke/latest/documentation/what-is-speke.html.
Variants (Non-exhaustive)§
This enum is marked as non-exhaustive
Speke
StaticKey
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 CmafKeyProviderType
impl CmafKeyProviderType
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 CmafKeyProviderType
impl AsRef<str> for CmafKeyProviderType
source§impl Clone for CmafKeyProviderType
impl Clone for CmafKeyProviderType
source§fn clone(&self) -> CmafKeyProviderType
fn clone(&self) -> CmafKeyProviderType
1.0.0 · source§fn clone_from(&mut self, source: &Self)
fn clone_from(&mut self, source: &Self)
source
. Read moresource§impl Debug for CmafKeyProviderType
impl Debug for CmafKeyProviderType
source§impl Display for CmafKeyProviderType
impl Display for CmafKeyProviderType
source§impl From<&str> for CmafKeyProviderType
impl From<&str> for CmafKeyProviderType
source§impl FromStr for CmafKeyProviderType
impl FromStr for CmafKeyProviderType
source§impl Hash for CmafKeyProviderType
impl Hash for CmafKeyProviderType
source§impl Ord for CmafKeyProviderType
impl Ord for CmafKeyProviderType
source§fn cmp(&self, other: &CmafKeyProviderType) -> Ordering
fn cmp(&self, other: &CmafKeyProviderType) -> 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 CmafKeyProviderType
impl PartialEq for CmafKeyProviderType
source§fn eq(&self, other: &CmafKeyProviderType) -> bool
fn eq(&self, other: &CmafKeyProviderType) -> bool
self
and other
values to be equal, and is used
by ==
.source§impl PartialOrd for CmafKeyProviderType
impl PartialOrd for CmafKeyProviderType
source§fn partial_cmp(&self, other: &CmafKeyProviderType) -> Option<Ordering>
fn partial_cmp(&self, other: &CmafKeyProviderType) -> 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 CmafKeyProviderType
impl StructuralPartialEq for CmafKeyProviderType
Auto Trait Implementations§
impl Freeze for CmafKeyProviderType
impl RefUnwindSafe for CmafKeyProviderType
impl Send for CmafKeyProviderType
impl Sync for CmafKeyProviderType
impl Unpin for CmafKeyProviderType
impl UnwindSafe for CmafKeyProviderType
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