Struct Environment 

pub struct Environment {
    pub machine: String,
    pub os: String,
    pub arch: String,
    pub date: String,
    pub digest: Option<String>,
    pub rerun: String,
    pub host: Option<String>,
}

Where and when a figure was measured. Keep every field honest: a row without its environment is a claim about the present.

Fields

machine: String

CPU model and logical core count, as the OS reports them.

os: String

std::env::consts::OS.

arch: String

std::env::consts::ARCH.

date: String

UTC date, YYYY-MM-DD.

digest: Option<String>

The server image digest, when the caller ran one (sha256:...).

rerun: String

The command that reproduces this run.

host: Option<String>

What the host was doing at the start and end of the run (load, available RAM; see host_snapshot), for runs where that decides whether a figure means anything. None when not recorded. It is evidence, not part of comparable_key.

Implementations

impl Environment

pub fn detect(rerun: impl Into<String>, digest: Option<String>) -> Self

Read the machine, OS, architecture and date; the caller supplies the re-run command and the image digest, if any.

pub fn comparable_key(&self) -> String

What decides whether two rows may be compared: same machine, OS and architecture.

Trait Implementations

impl Clone for Environment

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 Environment

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

Formats the value using the given formatter.

impl Eq for Environment

impl PartialEq for Environment

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

Equality operator ==.

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

Inequality operator !=.

impl StructuralPartialEq for Environment