Struct FileListenerBuilder 

pub struct FileListenerBuilder { /* private fields */ }

Builds a FileListener.

Implementations

impl FileListenerBuilder

pub fn new<P: AsRef<Path>>(path: P) -> Self

Creates a new FileListenerBuilder for the specified file path.

pub const fn max_lines(self, max: usize) -> Self

Sets the maximum number of lines the FileListener will keep in its buffer.

pub const fn initial_read_lines(self, lines: usize) -> Self

Sets the number of lines to read from the end of the file on the first tick().

pub fn parser<F>(self, parser: F) -> Self

where F: Fn(String, Option<DateTime<Utc>>) -> (DateTime<Utc>, String) + Send + Sync + 'static,

Sets a custom line parser.

The parser is a closure that takes the read line (String) and the timestamp of the previous line (Option<DateTime<Utc>>), and returns a tuple of (DateTime<Utc>, String). This allows for flexible parsing of custom timestamp formats or assigning timestamps based on other logic.

If not set, a default parser is used which looks for an RFC 3339 timestamp at the beginning of the line.

pub fn build(self) -> Result<FileListener>

Constructs the FileListener.

Errors

Returns an Error if the path exists but is not a regular file, or if there are permission issues.