Enum Priority

#[repr(u8)]
pub enum Priority {
    Emergency = 48,
    Alert = 49,
    Critical = 50,
    Error = 51,
    Warning = 52,
    Notice = 53,
    Informational = 54,
    Debug = 55,
}

A priority (called “severity code” by syslog) is used to mark the importance of a message.

Descriptions and examples are taken from the Arch Linux wiki. Priorities are also documented in the section 6.2.1 of the Syslog protocol RFC.

Variants

Emergency = 48

System is unusable.

Examples:

• severe Kernel BUG
• systemd dumped core

This level should not be used by applications.

Alert = 49

Should be corrected immediately.

Examples:

• Vital subsystem goes out of work, data loss:
• kernel: BUG: unable to handle kernel paging request at ffffc90403238ffc

Critical = 50

Critical conditions

Examples:

• Crashe, coredumps
• systemd-coredump[25319]: Process 25310 (plugin-container) of user 1000 dumped core

Error = 51

Error conditions

Examples:

• Not severe error reported
• kernel: usb 1-3: 3:1: cannot get freq at ep 0x84, systemd[1]: Failed unmounting /var
• libvirtd[1720]: internal error: Failed to initialize a valid firewall backend

Warning = 52

May indicate that an error will occur if action is not taken.

Examples:

• a non-root file system has only 1GB free
• org.freedesktop. Notifications[1860]: (process:5999): Gtk-WARNING **: Locale not supported by C library. Using the fallback 'C' locale

Notice = 53

Events that are unusual, but not error conditions.

Examples:

• systemd[1]: var.mount: Directory /var to mount over is not empty, mounting anyway
• gcr-prompter[4997]: Gtk: GtkDialog mapped without a transient parent. This is discouraged

Informational = 54

Normal operational messages that require no action.

Example: lvm[585]: 7 logical volume(s) in volume group "archvg" now active

Debug = 55

Information useful to developers for debugging the application.

Example: kdeinit5[1900]: powerdevil: Scheduling inhibition from ":1.14" "firefox" with cookie 13 and reason "screen"

Trait Implementations

impl Clone for Priority

fn clone(&self) -> Priority

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for Priority

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

Formats the value using the given formatter.

impl Hash for Priority

fn hash<__H: Hasher>(&self, state: &mut __H)

Feeds this value into the given Hasher.

fn hash_slice<H>(data: &[Self], state: &mut H)

where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher.

impl PartialEq for Priority

fn eq(&self, other: &Priority) -> 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 Copy for Priority

impl Eq for Priority

impl StructuralPartialEq for Priority