Method: Syslog.log

Defined in:

syslog.c

.log(priority, format_string, *format_args) ⇒ Object

Log a message with the specified priority. Example:

Syslog.log(Syslog::LOG_CRIT, "Out of disk space")
Syslog.log(Syslog::LOG_CRIT, "User %s logged in", ENV['USER'])

The priority levels, in descending order, are:

LOG_EMERG

System is unusable

LOG_ALERT

Action needs to be taken immediately

LOG_CRIT

A critical condition has occurred

LOG_ERR

An error occurred

LOG_WARNING

Warning of a possible problem

LOG_NOTICE

A normal but significant condition occurred

LOG_INFO

Informational message

LOG_DEBUG

Debugging information

Each priority level also has a shortcut method that logs with it's named priority. As an example, the two following statements would produce the same result:

Syslog.log(Syslog::LOG_ALERT, "Out of memory")
Syslog.alert("Out of memory")

# File 'syslog.c', line 302

static VALUE mSyslog_log(int argc, VALUE *argv, VALUE self)
{
    VALUE pri;

    rb_check_arity(argc, 2, UNLIMITED_ARGUMENTS);

    argc--;
    pri = *argv++;

    if (!FIXNUM_P(pri)) {
        rb_raise(rb_eTypeError, "type mismatch: %"PRIsVALUE" given", rb_obj_class(pri));
    }

    syslog_write(FIX2INT(pri), argc, argv);

    return self;
}