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JsonLogBackend

effect_logger

Struct JsonLogBackend 

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pub struct JsonLogBackend<W: Write + Send + 'static> { /* private fields */ }
Expand description

One JSON object per line (serde_json), for files or test buffers.

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impl<W: Write + Send + 'static> JsonLogBackend<W>

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pub fn new(writer: W) -> Self

Wrap writer; each LogBackend::emit appends one JSON object and newline.

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pub fn writer_arc(&self) -> Arc<Mutex<W>>

Clone the shared writer handle (e.g. read back a test Vec<u8> after logging).

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impl<W: Clone + Write + Send + 'static> Clone for JsonLogBackend<W>

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fn clone(&self) -> JsonLogBackend<W>

Returns a duplicate 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<W: Write + Send + 'static> LogBackend for JsonLogBackend<W>

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fn emit(&self, rec: &LogRecord<'_>) -> Result<(), EffectLoggerError>

Deliver one record to this sink (e.g. write a line, call tracing, …).

Auto Trait Implementations§

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impl<W> Freeze for JsonLogBackend<W>

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impl<W> RefUnwindSafe for JsonLogBackend<W>

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impl<W> Send for JsonLogBackend<W>

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impl<W> Sync for JsonLogBackend<W>

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impl<W> Unpin for JsonLogBackend<W>

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impl<W> UnsafeUnpin for JsonLogBackend<W>

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impl<W> UnwindSafe for JsonLogBackend<W>

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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, dest: *mut u8)

🔬This is a nightly-only experimental API. (clone_to_uninit)
Performs copy-assignment from self to dest. 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> Instrument for T

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fn instrument(self, span: Span) -> Instrumented<Self>

Instruments this type with the provided Span, returning an Instrumented wrapper. Read more
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fn in_current_span(self) -> Instrumented<Self>

Instruments this type with the current Span, returning an Instrumented wrapper. Read more
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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> Pipe for T

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fn pipe<F, R>(self, f: F) -> R
where F: FnOnce(Self) -> R,

Applies f to self (F#-style forward pipe).
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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.
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impl<T> WithSubscriber for T

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fn with_subscriber<S>(self, subscriber: S) -> WithDispatch<Self>
where S: Into<Dispatch>,

Attaches the provided Subscriber to this type, returning a WithDispatch wrapper. Read more
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fn with_current_subscriber(self) -> WithDispatch<Self>

Attaches the current default Subscriber to this type, returning a WithDispatch wrapper. Read more