_external_metrics_source.rs

// Code generated by software.amazon.smithy.rust.codegen.smithy-rs. DO NOT EDIT.

/// When writing a match expression against `ExternalMetricsSource`, 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:
/// 
/// ```text
/// # let externalmetricssource = unimplemented!();
/// match externalmetricssource {
///     ExternalMetricsSource::Datadog => { /* ... */ },
///     ExternalMetricsSource::Dynatrace => { /* ... */ },
///     ExternalMetricsSource::Instana => { /* ... */ },
///     ExternalMetricsSource::Newrelic => { /* ... */ },
///     other @ _ if other.as_str() == "NewFeature" => { /* handles a case for `NewFeature` */ },
///     _ => { /* ... */ },
/// }
/// ```
/// The above code demonstrates that when `externalmetricssource` represents
/// `NewFeature`, the execution path will lead to the second last match arm,
/// even though the enum does not contain a variant `ExternalMetricsSource::NewFeature`
/// in the current version of SDK. The reason is that the variable `other`,
/// created by the `@` operator, is bound to
/// `ExternalMetricsSource::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 `ExternalMetricsSource::NewFeature` is defined.
/// Specifically, when `externalmetricssource` represents `NewFeature`,
/// the execution path will hit the second last match arm as before by virtue of
/// calling `as_str` on `ExternalMetricsSource::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.
#[allow(missing_docs)] // documentation missing in model
#[non_exhaustive]
#[derive(::std::clone::Clone, ::std::cmp::Eq, ::std::cmp::Ord, ::std::cmp::PartialEq, ::std::cmp::PartialOrd, ::std::fmt::Debug, ::std::hash::Hash)]
pub enum ExternalMetricsSource {
    #[allow(missing_docs)] // documentation missing in model
    Datadog,
    #[allow(missing_docs)] // documentation missing in model
    Dynatrace,
    #[allow(missing_docs)] // documentation missing in model
    Instana,
    #[allow(missing_docs)] // documentation missing in model
    Newrelic,
    /// `Unknown` contains new variants that have been added since this code was generated.
    #[deprecated(note = "Don't directly match on `Unknown`. See the docs on this enum for the correct way to handle unknown variants.")]
    Unknown(crate::primitives::sealed_enum_unknown::UnknownVariantValue)
}
impl ::std::convert::From<&str> for ExternalMetricsSource {
                    fn from(s: &str) -> Self {
                        match s {
                            "Datadog" => ExternalMetricsSource::Datadog,
"Dynatrace" => ExternalMetricsSource::Dynatrace,
"Instana" => ExternalMetricsSource::Instana,
"NewRelic" => ExternalMetricsSource::Newrelic,
other => ExternalMetricsSource::Unknown(crate::primitives::sealed_enum_unknown::UnknownVariantValue(other.to_owned()))
                        }
                    }
                }
impl ::std::str::FromStr for ExternalMetricsSource {
                    type Err = ::std::convert::Infallible;

                    fn from_str(s: &str) -> ::std::result::Result<Self, <Self as ::std::str::FromStr>::Err> {
                        ::std::result::Result::Ok(ExternalMetricsSource::from(s))
                    }
                }
impl ExternalMetricsSource {
                /// Returns the `&str` value of the enum member.
                pub fn as_str(&self) -> &str {
                    match self {
    ExternalMetricsSource::Datadog => "Datadog",
    ExternalMetricsSource::Dynatrace => "Dynatrace",
    ExternalMetricsSource::Instana => "Instana",
    ExternalMetricsSource::Newrelic => "NewRelic",
    ExternalMetricsSource::Unknown(value) => value.as_str()
}
                }
                /// Returns all the `&str` representations of the enum members.
                pub const fn values() -> &'static [&'static str] {
                    &["Datadog", "Dynatrace", "Instana", "NewRelic"]
                }
            }
impl ::std::convert::AsRef<str> for ExternalMetricsSource {
                fn as_ref(&self) -> &str {
                    self.as_str()
                }
            }
impl ExternalMetricsSource {
                        /// Parses the enum value while disallowing unknown variants.
                        ///
                        /// Unknown variants will result in an error.
                        pub fn try_parse(value: &str) -> ::std::result::Result<Self, crate::error::UnknownVariantError> {
                            match Self::from(value) {
                                #[allow(deprecated)]
                                Self::Unknown(_) => ::std::result::Result::Err(crate::error::UnknownVariantError::new(value)),
                                known => Ok(known),
                            }
                        }
                    }
impl ::std::fmt::Display for ExternalMetricsSource {
                        fn fmt(&self, f: &mut ::std::fmt::Formatter) -> ::std::fmt::Result {
                            match self {
                                ExternalMetricsSource::Datadog => write!(f, "Datadog"),
ExternalMetricsSource::Dynatrace => write!(f, "Dynatrace"),
ExternalMetricsSource::Instana => write!(f, "Instana"),
ExternalMetricsSource::Newrelic => write!(f, "NewRelic"),
ExternalMetricsSource::Unknown(value) => write!(f, "{}", value)
                            }
                        }
                    }