#[non_exhaustive]pub enum StudioComponentState {
CreateFailed,
CreateInProgress,
Deleted,
DeleteFailed,
DeleteInProgress,
Ready,
UpdateFailed,
UpdateInProgress,
Unknown(UnknownVariantValue),
}
Expand description
When writing a match expression against StudioComponentState
, 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 studiocomponentstate = unimplemented!();
match studiocomponentstate {
StudioComponentState::CreateFailed => { /* ... */ },
StudioComponentState::CreateInProgress => { /* ... */ },
StudioComponentState::Deleted => { /* ... */ },
StudioComponentState::DeleteFailed => { /* ... */ },
StudioComponentState::DeleteInProgress => { /* ... */ },
StudioComponentState::Ready => { /* ... */ },
StudioComponentState::UpdateFailed => { /* ... */ },
StudioComponentState::UpdateInProgress => { /* ... */ },
other @ _ if other.as_str() == "NewFeature" => { /* handles a case for `NewFeature` */ },
_ => { /* ... */ },
}
The above code demonstrates that when studiocomponentstate
represents
NewFeature
, the execution path will lead to the second last match arm,
even though the enum does not contain a variant StudioComponentState::NewFeature
in the current version of SDK. The reason is that the variable other
,
created by the @
operator, is bound to
StudioComponentState::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 StudioComponentState::NewFeature
is defined.
Specifically, when studiocomponentstate
represents NewFeature
,
the execution path will hit the second last match arm as before by virtue of
calling as_str
on StudioComponentState::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.
The current state of the studio component resource.
While a studio component is being created, modified, or deleted, its state will be
CREATE_IN_PROGRESS
, UPDATE_IN_PROGRESS
, or
DELETE_IN_PROGRESS
.
These are called transition states.
No modifications may be made to the studio component while it is in a transition state.
If creation of the resource fails, the state will change to
CREATE_FAILED
. The resource StatusCode
and
StatusMessage
will provide more information of why creation failed. The
resource in this state will automatically be deleted from your account after a period of
time.
If updating the resource fails, the state will change to UPDATE_FAILED
.
The resource StatusCode
and StatusMessage
will provide more
information of why the update failed. The resource will be returned to the state it was
in when the update request was invoked.
If deleting the resource fails, the state will change to DELETE_FAILED
.
The resource StatusCode
and StatusMessage
will provide more
information of why the update failed. The resource will be returned to the state it was
in when the update request was invoked. After the resource is deleted successfully, it
will change to the DELETED
state. The resource will no longer count against
service quotas and cannot be used or acted upon any futher. It will be removed from your
account after a period of time.
Variants (Non-exhaustive)§
This enum is marked as non-exhaustive
CreateFailed
CreateInProgress
Deleted
DeleteFailed
DeleteInProgress
Ready
UpdateFailed
UpdateInProgress
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 StudioComponentState
impl StudioComponentState
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 StudioComponentState
impl AsRef<str> for StudioComponentState
source§impl Clone for StudioComponentState
impl Clone for StudioComponentState
source§fn clone(&self) -> StudioComponentState
fn clone(&self) -> StudioComponentState
1.0.0 · source§fn clone_from(&mut self, source: &Self)
fn clone_from(&mut self, source: &Self)
source
. Read moresource§impl Debug for StudioComponentState
impl Debug for StudioComponentState
source§impl From<&str> for StudioComponentState
impl From<&str> for StudioComponentState
source§impl FromStr for StudioComponentState
impl FromStr for StudioComponentState
source§impl Hash for StudioComponentState
impl Hash for StudioComponentState
source§impl Ord for StudioComponentState
impl Ord for StudioComponentState
source§fn cmp(&self, other: &StudioComponentState) -> Ordering
fn cmp(&self, other: &StudioComponentState) -> 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 StudioComponentState
impl PartialEq for StudioComponentState
source§fn eq(&self, other: &StudioComponentState) -> bool
fn eq(&self, other: &StudioComponentState) -> bool
self
and other
values to be equal, and is used
by ==
.source§impl PartialOrd for StudioComponentState
impl PartialOrd for StudioComponentState
source§fn partial_cmp(&self, other: &StudioComponentState) -> Option<Ordering>
fn partial_cmp(&self, other: &StudioComponentState) -> 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 StudioComponentState
impl StructuralEq for StudioComponentState
impl StructuralPartialEq for StudioComponentState
Auto Trait Implementations§
impl RefUnwindSafe for StudioComponentState
impl Send for StudioComponentState
impl Sync for StudioComponentState
impl Unpin for StudioComponentState
impl UnwindSafe for StudioComponentState
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
§impl<Q, K> Comparable<K> for Q
impl<Q, K> Comparable<K> for Q
§impl<Q, K> Equivalent<K> for Q
impl<Q, K> Equivalent<K> for Q
§fn equivalent(&self, key: &K) -> bool
fn equivalent(&self, key: &K) -> bool
§impl<Q, K> Equivalent<K> for Q
impl<Q, K> Equivalent<K> for Q
§fn equivalent(&self, key: &K) -> bool
fn equivalent(&self, key: &K) -> bool
key
and return true
if they are equal.