Enum Signal 

#[repr(u8)]
pub enum Signal {
    Logs = 0,
    Traces = 1,
    Metrics = 2,
}

Which signal a frame belongs to.

Stored as one byte rather than the string the block directories use, because a frame header should be fixed-width — a variable-length field in front of a length field is how a parser gets confused about where the body starts.

Variants

Logs = 0

Traces = 1

Metrics = 2

Implementations

impl Signal

pub const ALL: [Signal; 3]

The three, in the order their watermarks are indexed.

pub fn as_str(self) -> &'static str

The directory name block::publish uses for this signal. Kept in step with the strings the block layer already writes; a mismatch here would put a watermark on the wrong signal’s blocks.

pub fn named(s: &str) -> Option<Signal>

The inverse of Signal::as_str, so a caller holding a crate::signal::SignalBuilder’s SIGNAL does not have to keep a fourth copy of the mapping in step with the other three.

fn from_u8(b: u8) -> Option<Signal>

pub fn index(self) -> usize

Where this signal’s watermark sits in Watermarks.

Trait Implementations

impl Clone for Signal

fn clone(&self) -> Signal

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for Signal

impl Debug for Signal

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

Formats the value using the given formatter.

impl Eq for Signal

impl Ord for Signal

fn cmp(&self, other: &Signal) -> Ordering

This method returns an Ordering between self and other.

fn max(self, other: Self) -> Self

where Self: Sized,

Compares and returns the maximum of two values.

fn min(self, other: Self) -> Self

where Self: Sized,

Compares and returns the minimum of two values.

fn clamp(self, min: Self, max: Self) -> Self

where Self: Sized,

Restrict a value to a certain interval.

impl PartialEq for Signal

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

Tests for self and other values to be equal, and is used by ==.

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

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl PartialOrd for Signal

fn partial_cmp(&self, other: &Signal) -> Option<Ordering>

This method returns an ordering between self and other values if one exists.

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

Tests less than (for self and other) and is used by the < operator.

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

Tests less than or equal to (for self and other) and is used by the <= operator.

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

Tests greater than (for self and other) and is used by the > operator.

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

Tests greater than or equal to (for self and other) and is used by the >= operator.

impl StructuralPartialEq for Signal