metrics

Struct Metadata

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pub struct Metadata<'a> { /* private fields */ }
Expand description

Metadata describing a metric event. This provides additional context to Recorder, allowing for fine-grained filtering.

Contains the following:

  • A target, specifying the part of the system where the metric event occurred. When initialized via the [metrics macro], and left unspecified, this defaults to the module path the macro was invoked from.
  • A level, specifying the verbosity the metric event is emitted at.
  • An optional module_path, specifying the the module path the metric event was emitted from.

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impl<'a> Metadata<'a>

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pub const fn new( target: &'a str, level: Level, module_path: Option<&'a str>, ) -> Self

Constructs a new Metadata.

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pub fn level(&self) -> &Level

Returns the verbosity level of the metric event.

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pub fn target(&self) -> &'a str

Returns the target of the metric event. This specifies the part of the system where the event occurred.

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pub fn module_path(&self) -> Option<&'a str>

Returns the module path of the metric event. This specifies the module where the event occurred.

Trait Implementations§

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impl<'a> Clone for Metadata<'a>

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fn clone(&self) -> Metadata<'a>

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<'a> Debug for Metadata<'a>

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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<'a> PartialEq for Metadata<'a>

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fn eq(&self, other: &Metadata<'a>) -> 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<'a> Eq for Metadata<'a>

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impl<'a> StructuralPartialEq for Metadata<'a>

Auto Trait Implementations§

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impl<'a> Freeze for Metadata<'a>

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impl<'a> RefUnwindSafe for Metadata<'a>

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impl<'a> Send for Metadata<'a>

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impl<'a> Sync for Metadata<'a>

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impl<'a> Unpin for Metadata<'a>

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impl<'a> UnwindSafe for Metadata<'a>

Blanket Implementations§

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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> 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.