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