pub enum Reason {
    Off,
    TargetMatch,
    RuleMatch {
        rule_index: usize,
        rule_id: String,
        in_experiment: bool,
    },
    PrerequisiteFailed {
        prerequisite_key: String,
    },
    Fallthrough {
        in_experiment: bool,
    },
    Error {
        error: Error,
    },
}
Expand description

Reason describes the reason that a flag evaluation produced a particular value.

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Off

Off indicates that the flag was off and therefore returned its configured off value.

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TargetMatch

TargetMatch indicates that context key was specifically targeted for this flag.

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RuleMatch

RuleMatch indicates that the context matched one of the flag’s rules.

Fields

§rule_index: usize

Zero-based index of the crate::FlagRule that was matched.

§rule_id: String

The id property of the crate::FlagRule::id that was matched.

§in_experiment: bool

This optional boolean property is true if the variation was determined by a crate::Rollout whose kind was crate::RolloutKind::Experiment and if the selected crate::WeightedVariation did not have an untracked property of true. It is false otherwise.

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PrerequisiteFailed

PrerequisiteFailed indicates that the flag was considered off because it had at least one prerequisite flag that either was off or did not return the desired variation.

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§prerequisite_key: String

The key of the prerequisite flag that failed.

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Fallthrough

Fallthrough indicates that the flag was on but the context did not match any targets or rules.

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§in_experiment: bool

This optional boolean property is true if the variation was determined by a crate::Rollout whose kind was crate::RolloutKind::Experiment and if the selected crate::WeightedVariation did not have an untracked property of true. It is false otherwise.

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Error

Error indicates that the flag could not be evaluated, e.g. because it does not exist or due to an unexpected error. In this case the result value will be the default value that the caller passed to the client.

Fields

§error: Error

An error representing the Reason::Error.

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impl Reason

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pub fn is_in_experiment(&self) -> bool

This method determines whether or not the provided Reason is considered to be part of an ongoing experiment.

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impl Clone for Reason

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fn clone(&self) -> Reason

Returns a copy of the value. Read more
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fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source. Read more
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impl Debug for Reason

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

Formats the value using the given formatter. Read more
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impl PartialEq for Reason

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

Tests for self and other values to be equal, and is used by ==.
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fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.
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impl Serialize for Reason

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fn serialize<__S>(&self, __serializer: __S) -> Result<__S::Ok, __S::Error>
where __S: Serializer,

Serialize this value into the given Serde serializer. Read more
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impl StructuralPartialEq for Reason

Auto Trait Implementations§

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impl Freeze for Reason

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impl RefUnwindSafe for Reason

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impl Send for Reason

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impl Sync for Reason

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impl Unpin for Reason

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impl UnwindSafe for Reason

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impl<T> Any for T
where T: 'static + ?Sized,

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fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more
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impl<T> Borrow<T> for T
where T: ?Sized,

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fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more
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impl<T> BorrowMut<T> for T
where T: ?Sized,

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fn borrow_mut(&mut self) -> &mut T

Mutably borrows from an owned value. Read more
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impl<T> CloneToUninit for T
where T: Clone,

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unsafe fn clone_to_uninit(&self, dst: *mut T)

🔬This is a nightly-only experimental API. (clone_to_uninit)
Performs copy-assignment from self to dst. Read more
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impl<T> From<T> for T

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fn from(t: T) -> T

Returns the argument unchanged.

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impl<T, U> Into<U> for T
where U: From<T>,

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fn into(self) -> U

Calls U::from(self).

That is, this conversion is whatever the implementation of From<T> for U chooses to do.

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impl<T> Same for T

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type Output = T

Should always be Self
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impl<T> ToOwned for T
where T: Clone,

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type Owned = T

The resulting type after obtaining ownership.
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fn to_owned(&self) -> T

Creates owned data from borrowed data, usually by cloning. Read more
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fn clone_into(&self, target: &mut T)

Uses borrowed data to replace owned data, usually by cloning. Read more
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impl<T, U> TryFrom<U> for T
where U: Into<T>,

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type Error = Infallible

The type returned in the event of a conversion error.
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fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>

Performs the conversion.
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impl<T, U> TryInto<U> for T
where U: TryFrom<T>,

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type Error = <U as TryFrom<T>>::Error

The type returned in the event of a conversion error.
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fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

Performs the conversion.