Enum aws_sdk_s3::types::RequestPayer
source · #[non_exhaustive]pub enum RequestPayer {
Requester,
Unknown(UnknownVariantValue),
}
Expand description
When writing a match expression against RequestPayer
, 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 requestpayer = unimplemented!();
match requestpayer {
RequestPayer::Requester => { /* ... */ },
other @ _ if other.as_str() == "NewFeature" => { /* handles a case for `NewFeature` */ },
_ => { /* ... */ },
}
The above code demonstrates that when requestpayer
represents
NewFeature
, the execution path will lead to the second last match arm,
even though the enum does not contain a variant RequestPayer::NewFeature
in the current version of SDK. The reason is that the variable other
,
created by the @
operator, is bound to
RequestPayer::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 RequestPayer::NewFeature
is defined.
Specifically, when requestpayer
represents NewFeature
,
the execution path will hit the second last match arm as before by virtue of
calling as_str
on RequestPayer::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.
Confirms that the requester knows that they will be charged for the request. Bucket owners need not specify this parameter in their requests. If either the source or destination S3 bucket has Requester Pays enabled, the requester will pay for corresponding charges to copy the object. For information about downloading objects from Requester Pays buckets, see Downloading Objects in Requester Pays Buckets in the Amazon S3 User Guide.
This functionality is not supported for directory buckets.
Variants (Non-exhaustive)§
This enum is marked as non-exhaustive
Requester
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 RequestPayer
impl RequestPayer
source§impl RequestPayer
impl RequestPayer
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 RequestPayer
impl AsRef<str> for RequestPayer
source§impl Clone for RequestPayer
impl Clone for RequestPayer
source§fn clone(&self) -> RequestPayer
fn clone(&self) -> RequestPayer
1.0.0 · source§fn clone_from(&mut self, source: &Self)
fn clone_from(&mut self, source: &Self)
source
. Read moresource§impl Debug for RequestPayer
impl Debug for RequestPayer
source§impl Display for RequestPayer
impl Display for RequestPayer
source§impl From<&str> for RequestPayer
impl From<&str> for RequestPayer
source§impl FromStr for RequestPayer
impl FromStr for RequestPayer
source§impl Hash for RequestPayer
impl Hash for RequestPayer
source§impl Ord for RequestPayer
impl Ord for RequestPayer
source§fn cmp(&self, other: &RequestPayer) -> Ordering
fn cmp(&self, other: &RequestPayer) -> 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 RequestPayer
impl PartialEq for RequestPayer
source§impl PartialOrd for RequestPayer
impl PartialOrd for RequestPayer
impl Eq for RequestPayer
impl StructuralPartialEq for RequestPayer
Auto Trait Implementations§
impl Freeze for RequestPayer
impl RefUnwindSafe for RequestPayer
impl Send for RequestPayer
impl Sync for RequestPayer
impl Unpin for RequestPayer
impl UnwindSafe for RequestPayer
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<T> CloneToUninit for Twhere
T: Clone,
impl<T> CloneToUninit for Twhere
T: Clone,
source§default unsafe fn clone_to_uninit(&self, dst: *mut T)
default unsafe fn clone_to_uninit(&self, dst: *mut T)
clone_to_uninit
)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.