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