Struct VirtualStreamWriter 

pub struct VirtualStreamWriter { /* private fields */ }

Implementations

impl VirtualStreamWriter

pub fn stream_id(&self) -> u64

Examples found in repository

examples/interleaved_temp_storage.rs (line 15)

fn main() {
    let storage = InterleavedTempFile::new_temp().unwrap();
    let mut handles = Vec::new();

    for stream_index in 0..4 {
        let mut writer = storage.spawn_stream();
        handles.push(thread::spawn(move || {
            let stream_id = writer.stream_id();
            let chunks = [
                format!("track-{stream_index}:header|"),
                format!("track-{stream_index}:events|"),
                format!("track-{stream_index}:tail"),
            ];

            let mut expected = String::new();
            for chunk in chunks {
                writer.write_all(chunk.as_bytes()).unwrap();
                expected.push_str(&chunk);
            }

            writer.flush().unwrap();
            (stream_id, expected)
        }));
    }

    let mut expected_streams = Vec::new();
    for handle in handles {
        expected_streams.push(handle.join().unwrap());
    }
    expected_streams.sort_unstable_by_key(|(stream_id, _)| *stream_id);

    println!("Backing file: {}", storage.path().display());
    for (stream_id, expected) in expected_streams {
        let mut reader = storage.open_reader(stream_id).unwrap();
        let mut actual = String::new();
        reader.read_to_string(&mut actual).unwrap();

        assert_eq!(actual, expected);
        println!("stream {stream_id}: {actual}");
    }
}

pub fn flush_to_disk(&self) -> Result<(), VirtualFileError>

Trait Implementations

impl Debug for VirtualStreamWriter

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

Formats the value using the given formatter.

impl Write for VirtualStreamWriter

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.