Enum aws_sdk_acm::types::KeyAlgorithm

#[non_exhaustive]
pub enum KeyAlgorithm {
    EcPrime256v1,
    EcSecp384r1,
    EcSecp521r1,
    Rsa1024,
    Rsa2048,
    Rsa3072,
    Rsa4096,
    Unknown(UnknownVariantValue),
}

When writing a match expression against KeyAlgorithm, 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 keyalgorithm = unimplemented!();
match keyalgorithm {
    KeyAlgorithm::EcPrime256v1 => { /* ... */ },
    KeyAlgorithm::EcSecp384r1 => { /* ... */ },
    KeyAlgorithm::EcSecp521r1 => { /* ... */ },
    KeyAlgorithm::Rsa1024 => { /* ... */ },
    KeyAlgorithm::Rsa2048 => { /* ... */ },
    KeyAlgorithm::Rsa3072 => { /* ... */ },
    KeyAlgorithm::Rsa4096 => { /* ... */ },
    other @ _ if other.as_str() == "NewFeature" => { /* handles a case for `NewFeature` */ },
    _ => { /* ... */ },
}

The above code demonstrates that when keyalgorithm represents NewFeature, the execution path will lead to the second last match arm, even though the enum does not contain a variant KeyAlgorithm::NewFeature in the current version of SDK. The reason is that the variable other, created by the @ operator, is bound to KeyAlgorithm::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 KeyAlgorithm::NewFeature is defined. Specifically, when keyalgorithm represents NewFeature, the execution path will hit the second last match arm as before by virtue of calling as_str on KeyAlgorithm::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)

Non-exhaustive enums could have additional variants added in future. Therefore, when matching against variants of non-exhaustive enums, an extra wildcard arm must be added to account for any future variants.

EcPrime256v1

EcSecp384r1

EcSecp521r1

Rsa1024

Rsa2048

Rsa3072

Rsa4096

Unknown(UnknownVariantValue)

👎Deprecated: Don’t directly match on 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

impl KeyAlgorithm

pub fn as_str(&self) -> &str

Returns the &str value of the enum member.

pub const fn values() -> &'static [&'static str]

Returns all the &str representations of the enum members.

impl KeyAlgorithm

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

impl AsRef<str> for KeyAlgorithm

fn as_ref(&self) -> &str

Converts this type into a shared reference of the (usually inferred) input type.

impl Clone for KeyAlgorithm

fn clone(&self) -> KeyAlgorithm

Returns a copy of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for KeyAlgorithm

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl From<&str> for KeyAlgorithm

fn from(s: &str) -> Self

Converts to this type from the input type.

impl FromStr for KeyAlgorithm

type Err = Infallible

The associated error which can be returned from parsing.

fn from_str(s: &str) -> Result<Self, <Self as FromStr>::Err>

Parses a string s to return a value of this type.

impl Hash for KeyAlgorithm

fn hash<__H: Hasher>(&self, state: &mut __H)

Feeds this value into the given Hasher.

fn hash_slice<H>(data: &[Self], state: &mut H)

where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher.

impl Ord for KeyAlgorithm

fn cmp(&self, other: &KeyAlgorithm) -> Ordering

This method returns an Ordering between self and other.

fn max(self, other: Self) -> Self

where Self: Sized,

Compares and returns the maximum of two values.

fn min(self, other: Self) -> Self

where Self: Sized,

Compares and returns the minimum of two values.

fn clamp(self, min: Self, max: Self) -> Self

where Self: Sized + PartialOrd,

Restrict a value to a certain interval.

impl PartialEq for KeyAlgorithm

fn eq(&self, other: &KeyAlgorithm) -> bool

This method tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

This method tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl PartialOrd for KeyAlgorithm

fn partial_cmp(&self, other: &KeyAlgorithm) -> Option<Ordering>

This method returns an ordering between self and other values if one exists.

fn lt(&self, other: &Rhs) -> bool

This method tests less than (for self and other) and is used by the < operator.

fn le(&self, other: &Rhs) -> bool

This method tests less than or equal to (for self and other) and is used by the <= operator.

fn gt(&self, other: &Rhs) -> bool

This method tests greater than (for self and other) and is used by the > operator.

fn ge(&self, other: &Rhs) -> bool

This method tests greater than or equal to (for self and other) and is used by the >= operator.

impl Eq for KeyAlgorithm

impl StructuralEq for KeyAlgorithm

impl StructuralPartialEq for KeyAlgorithm