Struct LogLine 

pub struct LogLine { /* private fields */ }

One line, including its original terminator (LF, CRLF, CR, or none).

Implementations

impl LogLine

pub fn as_str(&self) -> &str

Original line, including its terminator.

pub fn message(&self) -> &str

Content after recognized leading priority, wall-clock, and uptime prefixes, without its terminator. Unrecognized prefixes remain part of the message.

pub fn uptime(&self) -> Option<SignedDuration>

Elapsed time since boot, when a representable dmesg timestamp is present.

Examples found in repository

examples/parse.rs (line 62)

fn main() -> Result<(), Box<dyn Error>> {
    let mut debug = false;
    let mut path = None;
    let mut positional_only = false;
    for argument in env::args_os().skip(1) {
        if !positional_only && argument == "--debug" {
            debug = true;
        } else if !positional_only && argument == "--" {
            positional_only = true;
        } else if !positional_only && (argument == "--help" || argument == "-h") {
            println!(
                "Usage: parse [--debug] [--] [path/to/panic.log]\nReads stdin when no path is supplied.\n--debug prints the parsed Rust structure to stdout."
            );
            return Ok(());
        } else if (!positional_only && argument.to_string_lossy().starts_with('-'))
            || path.is_some()
        {
            return Err(io::Error::new(
                io::ErrorKind::InvalidInput,
                "Usage: parse [--debug] [--] [path/to/panic.log]",
            )
            .into());
        } else {
            path = Some(argument);
        }
    }
    let text = if let Some(path) = path {
        fs::read_to_string(path)?
    } else {
        let mut text = String::new();
        io::stdin().read_to_string(&mut text)?;
        text
    };
    let log = parse(text);
    if debug {
        println!("{log:#?}");
        return Ok(());
    }
    for line in log.lines() {
        match line.kind() {
            LineKind::Panic { message } => eprintln!("panic: {message}"),
            LineKind::Cpu {
                cpu,
                uid,
                pid,
                details,
            } => {
                eprintln!("cpu: {cpu}, uid: {uid:?}, pid: {pid}, {details}");
                if let Some(time) = line.timestamp() {
                    eprintln!("wall time: {time}");
                }
                if let Some(uptime) = line.uptime() {
                    eprintln!("uptime: {uptime}");
                }
            }
            LineKind::Symbol {
                label,
                segment,
                frame,
            } => {
                eprintln!(
                    "{label}: segment {segment:?}, {}+{}/{}",
                    frame.symbol, frame.offset, frame.size
                );
            }
            LineKind::Diagnostic { label, details }
                if matches!(label.as_str(), "Oops" | "BUG" | "#PF") =>
            {
                eprintln!("{label}: {details}");
            }
            LineKind::Frame(frame) => {
                eprintln!("frame: {}+{}/{}", frame.symbol, frame.offset, frame.size)
            }
            _ => {}
        }
    }
    // Original log goes to stdout; summaries go to stderr.
    print!("{log}");
    Ok(())
}

pub fn timestamp(&self) -> Option<Timestamp>

Wall-clock instant from a leading [unix_seconds][uptime] prefix.

Examples found in repository

examples/parse.rs (line 59)

fn main() -> Result<(), Box<dyn Error>> {
    let mut debug = false;
    let mut path = None;
    let mut positional_only = false;
    for argument in env::args_os().skip(1) {
        if !positional_only && argument == "--debug" {
            debug = true;
        } else if !positional_only && argument == "--" {
            positional_only = true;
        } else if !positional_only && (argument == "--help" || argument == "-h") {
            println!(
                "Usage: parse [--debug] [--] [path/to/panic.log]\nReads stdin when no path is supplied.\n--debug prints the parsed Rust structure to stdout."
            );
            return Ok(());
        } else if (!positional_only && argument.to_string_lossy().starts_with('-'))
            || path.is_some()
        {
            return Err(io::Error::new(
                io::ErrorKind::InvalidInput,
                "Usage: parse [--debug] [--] [path/to/panic.log]",
            )
            .into());
        } else {
            path = Some(argument);
        }
    }
    let text = if let Some(path) = path {
        fs::read_to_string(path)?
    } else {
        let mut text = String::new();
        io::stdin().read_to_string(&mut text)?;
        text
    };
    let log = parse(text);
    if debug {
        println!("{log:#?}");
        return Ok(());
    }
    for line in log.lines() {
        match line.kind() {
            LineKind::Panic { message } => eprintln!("panic: {message}"),
            LineKind::Cpu {
                cpu,
                uid,
                pid,
                details,
            } => {
                eprintln!("cpu: {cpu}, uid: {uid:?}, pid: {pid}, {details}");
                if let Some(time) = line.timestamp() {
                    eprintln!("wall time: {time}");
                }
                if let Some(uptime) = line.uptime() {
                    eprintln!("uptime: {uptime}");
                }
            }
            LineKind::Symbol {
                label,
                segment,
                frame,
            } => {
                eprintln!(
                    "{label}: segment {segment:?}, {}+{}/{}",
                    frame.symbol, frame.offset, frame.size
                );
            }
            LineKind::Diagnostic { label, details }
                if matches!(label.as_str(), "Oops" | "BUG" | "#PF") =>
            {
                eprintln!("{label}: {details}");
            }
            LineKind::Frame(frame) => {
                eprintln!("frame: {}+{}/{}", frame.symbol, frame.offset, frame.size)
            }
            _ => {}
        }
    }
    // Original log goes to stdout; summaries go to stderr.
    print!("{log}");
    Ok(())
}

pub fn kind(&self) -> &LineKind

Best-effort structured interpretation of the message.

Examples found in repository

examples/parse.rs (line 50)

fn main() -> Result<(), Box<dyn Error>> {
    let mut debug = false;
    let mut path = None;
    let mut positional_only = false;
    for argument in env::args_os().skip(1) {
        if !positional_only && argument == "--debug" {
            debug = true;
        } else if !positional_only && argument == "--" {
            positional_only = true;
        } else if !positional_only && (argument == "--help" || argument == "-h") {
            println!(
                "Usage: parse [--debug] [--] [path/to/panic.log]\nReads stdin when no path is supplied.\n--debug prints the parsed Rust structure to stdout."
            );
            return Ok(());
        } else if (!positional_only && argument.to_string_lossy().starts_with('-'))
            || path.is_some()
        {
            return Err(io::Error::new(
                io::ErrorKind::InvalidInput,
                "Usage: parse [--debug] [--] [path/to/panic.log]",
            )
            .into());
        } else {
            path = Some(argument);
        }
    }
    let text = if let Some(path) = path {
        fs::read_to_string(path)?
    } else {
        let mut text = String::new();
        io::stdin().read_to_string(&mut text)?;
        text
    };
    let log = parse(text);
    if debug {
        println!("{log:#?}");
        return Ok(());
    }
    for line in log.lines() {
        match line.kind() {
            LineKind::Panic { message } => eprintln!("panic: {message}"),
            LineKind::Cpu {
                cpu,
                uid,
                pid,
                details,
            } => {
                eprintln!("cpu: {cpu}, uid: {uid:?}, pid: {pid}, {details}");
                if let Some(time) = line.timestamp() {
                    eprintln!("wall time: {time}");
                }
                if let Some(uptime) = line.uptime() {
                    eprintln!("uptime: {uptime}");
                }
            }
            LineKind::Symbol {
                label,
                segment,
                frame,
            } => {
                eprintln!(
                    "{label}: segment {segment:?}, {}+{}/{}",
                    frame.symbol, frame.offset, frame.size
                );
            }
            LineKind::Diagnostic { label, details }
                if matches!(label.as_str(), "Oops" | "BUG" | "#PF") =>
            {
                eprintln!("{label}: {details}");
            }
            LineKind::Frame(frame) => {
                eprintln!("frame: {}+{}/{}", frame.symbol, frame.offset, frame.size)
            }
            _ => {}
        }
    }
    // Original log goes to stdout; summaries go to stderr.
    print!("{log}");
    Ok(())
}

Trait Implementations

impl Clone for LogLine

fn clone(&self) -> Self

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for LogLine

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

Formats the value using the given formatter.

impl Display for LogLine

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

Formats the value using the given formatter.

impl Eq for LogLine

impl PartialEq for LogLine

fn eq(&self, other: &Self) -> bool

Equality operator ==.

fn ne(&self, other: &Rhs) -> bool

Inequality operator !=.

impl StructuralPartialEq for LogLine