Struct Syslog 

pub struct Syslog {
    pub facility: Facility,
    pub process: Option<String>,
    pub hostname: Option<String>,
    pub level: Level,
    pub proto: SyslogProto,
    pub server: Option<SyslogAddr>,
    pub timeout: Duration,
}

Available on crate feature syslog only.

Config for syslog output, supports local and remote server.

The underlayer protocol is implemented by syslog crate, currently Formatter3164 is adapted.

In order to achieve efficient socket I/O, the message is sent to channel, and asynchronous flushed by backend writer.

When your program shutting down, should call flush to ensure the log is written to the socket.

log::logger().flush();

On panic, our panic hook will call flush() explicitly.

On connection, will output “syslog connected” message to stdout.

On remote syslog server failure, will not panic, only “syslog: flush err” message will be print to stderr, the backend thread will automatically reconnect to server. In order to prevent hang up, the message will be dropped after a timeout.

Example connecting local server

Source of crate::recipe::syslog_local()

use captains_log::*;
pub fn syslog_local(max_level: Level) -> Builder {
    let syslog = Syslog::new(Facility::LOG_USER, max_level);
    return Builder::default().add_sink(syslog);
}

Example connecting remote server

use captains_log::*;
let syslog = Syslog::new(Facility::LOG_USER, Level::Info).tcp("10.10.0.1:601");
let _ = Builder::default().add_sink(syslog).build();

Fields

facility: Facility

Syslog facility

process: Option<String>

Auto filled current process

hostname: Option<String>

Auto filled localhost,

level: Level

max level of message goes to syslog

proto: SyslogProto

When in doubt, use RFC3164

server: Option<SyslogAddr>

When None, connect local default unix socket.

timeout: Duration

Drop msg when syslog server fail after a timeout, also apply to tcp connect timeout.

Implementations

impl Syslog

pub fn new(facility: Facility, level: Level) -> Self

pub fn timeout(self, d: Duration) -> Self

pub fn hostname(self, name: String) -> Self

Set hostname if you don’t want the default

pub fn process_name(self, name: String) -> Self

Set process name if you don’t want the default

pub fn unix<P: Into<PathBuf>>(self, p: P) -> Self

pub fn tcp<S: AsRef<str>>(self, remote: S) -> Self

pub fn udp<S: AsRef<str>>(self, local: S, remote: S) -> Self

Trait Implementations

impl Default for Syslog

fn default() -> Self

Returns the “default value” for a type.

impl Hash for Syslog

fn hash<H: Hasher>(&self, hasher: &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 SinkConfigTrait for Syslog

fn get_level(&self) -> Level

get max log level of the sink

fn get_file_path(&self) -> Option<Box<Path>>

Only file sink has path

fn write_hash(&self, hasher: &mut Box<dyn Hasher>)

Calculate hash for config comparison