#[non_exhaustive]pub enum AgentParameterField {
MaxStackDepth,
MemoryUsageLimitPercent,
MinimumTimeForReportingInMilliseconds,
ReportingIntervalInMilliseconds,
SamplingIntervalInMilliseconds,
Unknown(UnknownVariantValue),
}
Expand description
When writing a match expression against AgentParameterField
, 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 agentparameterfield = unimplemented!();
match agentparameterfield {
AgentParameterField::MaxStackDepth => { /* ... */ },
AgentParameterField::MemoryUsageLimitPercent => { /* ... */ },
AgentParameterField::MinimumTimeForReportingInMilliseconds => { /* ... */ },
AgentParameterField::ReportingIntervalInMilliseconds => { /* ... */ },
AgentParameterField::SamplingIntervalInMilliseconds => { /* ... */ },
other @ _ if other.as_str() == "NewFeature" => { /* handles a case for `NewFeature` */ },
_ => { /* ... */ },
}
The above code demonstrates that when agentparameterfield
represents
NewFeature
, the execution path will lead to the second last match arm,
even though the enum does not contain a variant AgentParameterField::NewFeature
in the current version of SDK. The reason is that the variable other
,
created by the @
operator, is bound to
AgentParameterField::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 AgentParameterField::NewFeature
is defined.
Specifically, when agentparameterfield
represents NewFeature
,
the execution path will hit the second last match arm as before by virtue of
calling as_str
on AgentParameterField::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
MaxStackDepth
Maximum stack depth to be captured by the CodeGuru Profiler.
MemoryUsageLimitPercent
Percentage of memory to be used by CodeGuru profiler. Minimum of 30MB is required for the agent.
MinimumTimeForReportingInMilliseconds
Minimum time in milliseconds between sending reports.
ReportingIntervalInMilliseconds
Reporting interval in milliseconds used to report profiles.
SamplingIntervalInMilliseconds
Sampling interval in milliseconds used to sample profiles.
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 AgentParameterField
impl AgentParameterField
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 AgentParameterField
impl AsRef<str> for AgentParameterField
source§impl Clone for AgentParameterField
impl Clone for AgentParameterField
source§fn clone(&self) -> AgentParameterField
fn clone(&self) -> AgentParameterField
1.0.0 · source§fn clone_from(&mut self, source: &Self)
fn clone_from(&mut self, source: &Self)
source
. Read moresource§impl Debug for AgentParameterField
impl Debug for AgentParameterField
source§impl From<&str> for AgentParameterField
impl From<&str> for AgentParameterField
source§impl FromStr for AgentParameterField
impl FromStr for AgentParameterField
source§impl Hash for AgentParameterField
impl Hash for AgentParameterField
source§impl Ord for AgentParameterField
impl Ord for AgentParameterField
source§fn cmp(&self, other: &AgentParameterField) -> Ordering
fn cmp(&self, other: &AgentParameterField) -> 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 AgentParameterField
impl PartialEq for AgentParameterField
source§fn eq(&self, other: &AgentParameterField) -> bool
fn eq(&self, other: &AgentParameterField) -> bool
self
and other
values to be equal, and is used
by ==
.source§impl PartialOrd for AgentParameterField
impl PartialOrd for AgentParameterField
source§fn partial_cmp(&self, other: &AgentParameterField) -> Option<Ordering>
fn partial_cmp(&self, other: &AgentParameterField) -> 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 AgentParameterField
impl StructuralPartialEq for AgentParameterField
Auto Trait Implementations§
impl RefUnwindSafe for AgentParameterField
impl Send for AgentParameterField
impl Sync for AgentParameterField
impl Unpin for AgentParameterField
impl UnwindSafe for AgentParameterField
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.