Struct DeferredNow

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pub struct DeferredNow(/* private fields */);
Expand description

Deferred timestamp creation.

Is used to ensure that a log record that is sent to multiple outputs (in maybe different formats) always uses the same timestamp.

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impl<'a> DeferredNow

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pub fn new() -> DeferredNow

Constructs a new instance, but does not generate the timestamp.

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pub fn now(&'a mut self) -> &'a DateTime<Local>

Retrieve the timestamp for local time zone.

Requires mutability because the first caller will generate the timestamp.

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pub fn now_utc_owned(&'a mut self) -> DateTime<Utc>

Retrieve the UTC timestamp.

Requires mutability because the first caller will generate the timestamp.

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pub fn format<'b>( &'a mut self, fmt: &'b str, ) -> DelayedFormat<StrftimeItems<'b>>

Produces a preformatted object suitable for printing.

§Panics

Panics if fmt has an inappropriate value.

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pub fn format_rfc3339(&mut self) -> String

Prints itself in a format compliant with RFC 3339.

Example: 2021-04-29T13:14:15.678+01:00

We do not use the Z variant of RFC 3339, because it is often misinterpreted.

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pub fn force_utc()

Enforce the use of UTC rather than local time.

By default, flexi_logger uses or tries to use local time. By calling early in your program either Logger::use_utc() or directly this method, you can override this to always use UTC.

§Panics

Panics if called too late, i.e., if DeferredNow::now was already called before on any instance of DeferredNow.

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impl Debug for DeferredNow

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

Formats the value using the given formatter. Read more
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impl Default for DeferredNow

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fn default() -> DeferredNow

Returns the “default value” for a type. Read more

Auto Trait Implementations§

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> 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, 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.