Struct merino_integration_tests::utils::logging::LogWatcherWriter

pub struct LogWatcherWriter {
    buf: Arc<Mutex<Vec<u8>>>,
}

A helper that collects log events emitted from Tracing.

This is needed because Tracing consumes its subscribers. This type is a “scout” that is split off from the main LogWatcher to give to Tracing, and the data is written back to the parent type.

Fields

buf: Arc<Mutex<Vec<u8>>>

The handle to the parent log watcher’s buffer.

Trait Implementations

impl Clone for LogWatcherWriter

fn clone(&self) -> LogWatcherWriter

Returns a copy of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Write for LogWatcherWriter

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

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

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

Flush 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, fmt: Arguments<'_>) -> Result<(), Error>

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

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

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