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