mirror of
https://github.com/42wim/matterbridge.git
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59 lines
1.9 KiB
Go
59 lines
1.9 KiB
Go
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package srslog
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import (
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"fmt"
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"os"
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"time"
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)
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const appNameMaxLength = 48 // limit to 48 chars as per RFC5424
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// Formatter is a type of function that takes the consituent parts of a
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// syslog message and returns a formatted string. A different Formatter is
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// defined for each different syslog protocol we support.
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type Formatter func(p Priority, hostname, tag, content string) string
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// DefaultFormatter is the original format supported by the Go syslog package,
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// and is a non-compliant amalgamation of 3164 and 5424 that is intended to
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// maximize compatibility.
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func DefaultFormatter(p Priority, hostname, tag, content string) string {
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timestamp := time.Now().Format(time.RFC3339)
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msg := fmt.Sprintf("<%d> %s %s %s[%d]: %s",
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p, timestamp, hostname, tag, os.Getpid(), content)
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return msg
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}
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// UnixFormatter omits the hostname, because it is only used locally.
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func UnixFormatter(p Priority, hostname, tag, content string) string {
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timestamp := time.Now().Format(time.Stamp)
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msg := fmt.Sprintf("<%d>%s %s[%d]: %s",
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p, timestamp, tag, os.Getpid(), content)
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return msg
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}
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// RFC3164Formatter provides an RFC 3164 compliant message.
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func RFC3164Formatter(p Priority, hostname, tag, content string) string {
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timestamp := time.Now().Format(time.Stamp)
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msg := fmt.Sprintf("<%d>%s %s %s[%d]: %s",
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p, timestamp, hostname, tag, os.Getpid(), content)
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return msg
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}
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// if string's length is greater than max, then use the last part
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func truncateStartStr(s string, max int) string {
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if (len(s) > max) {
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return s[len(s) - max:]
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}
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return s
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}
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// RFC5424Formatter provides an RFC 5424 compliant message.
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func RFC5424Formatter(p Priority, hostname, tag, content string) string {
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timestamp := time.Now().Format(time.RFC3339)
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pid := os.Getpid()
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appName := truncateStartStr(os.Args[0], appNameMaxLength)
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msg := fmt.Sprintf("<%d>%d %s %s %s %d %s - %s",
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p, 1, timestamp, hostname, appName, pid, tag, content)
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return msg
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}
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