#[non_exhaustive]pub enum VpcEndpointErrorCode {
EndpointNotFound,
ServerError,
Unknown(UnknownVariantValue),
}
Expand description
When writing a match expression against VpcEndpointErrorCode
, 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 vpcendpointerrorcode = unimplemented!();
match vpcendpointerrorcode {
VpcEndpointErrorCode::EndpointNotFound => { /* ... */ },
VpcEndpointErrorCode::ServerError => { /* ... */ },
other @ _ if other.as_str() == "NewFeature" => { /* handles a case for `NewFeature` */ },
_ => { /* ... */ },
}
The above code demonstrates that when vpcendpointerrorcode
represents
NewFeature
, the execution path will lead to the second last match arm,
even though the enum does not contain a variant VpcEndpointErrorCode::NewFeature
in the current version of SDK. The reason is that the variable other
,
created by the @
operator, is bound to
VpcEndpointErrorCode::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 VpcEndpointErrorCode::NewFeature
is defined.
Specifically, when vpcendpointerrorcode
represents NewFeature
,
the execution path will hit the second last match arm as before by virtue of
calling as_str
on VpcEndpointErrorCode::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.
Specifies the error code of the failure encountered while describing the VPC endpoint:
- ENDPOINT_NOT_FOUND: Indicates that the requested VPC endpoint does not exist.
- SERVER_ERROR: Indicates the describe endpoint operation failed due to an internal server error.
Variants (Non-exhaustive)§
This enum is marked as non-exhaustive
EndpointNotFound
ServerError
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 VpcEndpointErrorCode
impl VpcEndpointErrorCode
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 VpcEndpointErrorCode
impl AsRef<str> for VpcEndpointErrorCode
source§impl Clone for VpcEndpointErrorCode
impl Clone for VpcEndpointErrorCode
source§fn clone(&self) -> VpcEndpointErrorCode
fn clone(&self) -> VpcEndpointErrorCode
1.0.0 · source§fn clone_from(&mut self, source: &Self)
fn clone_from(&mut self, source: &Self)
source
. Read moresource§impl Debug for VpcEndpointErrorCode
impl Debug for VpcEndpointErrorCode
source§impl Display for VpcEndpointErrorCode
impl Display for VpcEndpointErrorCode
source§impl From<&str> for VpcEndpointErrorCode
impl From<&str> for VpcEndpointErrorCode
source§impl FromStr for VpcEndpointErrorCode
impl FromStr for VpcEndpointErrorCode
source§impl Hash for VpcEndpointErrorCode
impl Hash for VpcEndpointErrorCode
source§impl Ord for VpcEndpointErrorCode
impl Ord for VpcEndpointErrorCode
source§fn cmp(&self, other: &VpcEndpointErrorCode) -> Ordering
fn cmp(&self, other: &VpcEndpointErrorCode) -> 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 VpcEndpointErrorCode
impl PartialEq for VpcEndpointErrorCode
source§fn eq(&self, other: &VpcEndpointErrorCode) -> bool
fn eq(&self, other: &VpcEndpointErrorCode) -> bool
self
and other
values to be equal, and is used
by ==
.source§impl PartialOrd for VpcEndpointErrorCode
impl PartialOrd for VpcEndpointErrorCode
source§fn partial_cmp(&self, other: &VpcEndpointErrorCode) -> Option<Ordering>
fn partial_cmp(&self, other: &VpcEndpointErrorCode) -> 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 VpcEndpointErrorCode
impl StructuralPartialEq for VpcEndpointErrorCode
Auto Trait Implementations§
impl Freeze for VpcEndpointErrorCode
impl RefUnwindSafe for VpcEndpointErrorCode
impl Send for VpcEndpointErrorCode
impl Sync for VpcEndpointErrorCode
impl Unpin for VpcEndpointErrorCode
impl UnwindSafe for VpcEndpointErrorCode
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