Struct Journal 

pub(crate) struct Journal {
    priority: Option<Priority>,
}

Writes every log line as one journal entry with the priority derived from the tracing level.

Fields

priority: Option<Priority>

Implementations

impl Journal

const DEFAULT_PRIORITY: Priority = Priority::Notice

pub(crate) fn error() -> Self

A writer with the priority of errors, for the errors of the server from before its logging got set up.

fn entry(&self, line: &[u8]) -> Entry

The entry of a formatted event. The journal separates entries itself, so the line ending of the event is dropped.

fn priority_for(level: Level) -> Priority

impl Journal

fn send_at(&self, path: &Path, line: &[u8]) -> Result<()>

Send without blocking the runtime thread of the event. A system without journald is not an error, like with sd_journal_send, and a journal which does not keep up loses the line, otherwise every event would report an error.

Trait Implementations

impl Default for Journal

fn default() -> Self

Returns the “default value” for a type.

impl<'a> MakeWriter<'a> for Journal

type Writer = Journal

The concrete io::Write implementation returned by make_writer.

fn make_writer(&'a self) -> Self::Writer

Returns an instance of Writer.

fn make_writer_for(&'a self, meta: &Metadata<'_>) -> Self::Writer

Returns a Writer for writing data from the span or event described by the provided Metadata.

impl Write for Journal

fn write(&mut self, buf: &[u8]) -> Result<usize>

Writes a buffer into this writer, returning how many bytes were written.

fn flush(&mut self) -> Result<()>

Flushes this output stream, ensuring that all intermediately buffered contents reach their destination.

fn write_vectored(&mut self, bufs: &[IoSlice<'_>]) -> Result<usize, Error>

Like write, except that it writes from a slice of buffers.

fn is_write_vectored(&self) -> bool

🔬This is a nightly-only experimental API. (can_vector)

Determines if this Writer has an efficient write_vectored implementation.

fn write_all(&mut self, buf: &[u8]) -> Result<(), Error>

Attempts to write an entire buffer into this writer.

fn write_all_vectored(&mut self, bufs: &mut [IoSlice<'_>]) -> Result<(), Error>

🔬This is a nightly-only experimental API. (write_all_vectored)

Attempts to write multiple buffers into this writer.

fn write_fmt(&mut self, args: Arguments<'_>) -> Result<(), Error>

Writes a formatted string into this writer, returning any error encountered.

fn by_ref(&mut self) -> &mut Self

where Self: Sized,

Creates a “by reference” adapter for this instance of Write.