Struct flexi_logger::DeferredNow

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

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.

Implementations

impl<'a> DeferredNow

pub fn new() -> Self

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

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.

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

Retrieve the UTC timestamp.

Requires mutability because the first caller will generate the timestamp.

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.

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.

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.

Trait Implementations

impl Debug for DeferredNow

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

Formats the value using the given formatter.

impl Default for DeferredNow

fn default() -> DeferredNow

Returns the “default value” for a type.