100 lines
2.1 KiB
Go
100 lines
2.1 KiB
Go
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package log
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import (
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"fmt"
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"os"
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"strconv"
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"strings"
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"time"
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)
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const LEVEL_DEBUG = 0
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const LEVEL_INFO = 1
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const LEVEL_WARNING = 2
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const LEVEL_ERROR = 3
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const LEVEL_FATAL = 4
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var logLevel = 0
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// exported functions
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func SetLogLevel(level int) {
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logLevel = level
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}
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func Debug(message string, extras ...string) {
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DebugTimed(message, -1, extras...)
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}
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func DebugTimed(message string, timestamp int64, extras ...string) {
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trace(LEVEL_DEBUG, timestamp, message, extras...)
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}
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func Info(message string, extras ...string) {
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InfoTimed(message, -1, extras...)
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}
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func InfoTimed(message string, timestamp int64, extras ...string) {
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trace(LEVEL_INFO, timestamp, message, extras...)
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}
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func Warning(message string, extras ...string) {
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WarningTimed(message, -1, extras...)
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}
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func WarningTimed(message string, timestamp int64, extras ...string) {
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trace(LEVEL_WARNING, timestamp, message, extras...)
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}
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func Error(message string, extras ...string) {
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ErrorTimed(message, -1, extras...)
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}
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func ErrorTimed(message string, timestamp int64, extras ...string) {
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trace(LEVEL_ERROR, -1, message, extras...)
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}
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func Fatal(message string, extras ...string) {
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FatalTimed(message, -1, extras...)
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}
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func FatalTimed(message string, timestamp int64, extras ...string) {
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trace(LEVEL_FATAL, timestamp, message, extras...)
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trace(LEVEL_FATAL, -1, "exiting...")
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os.Exit(1)
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}
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// unexported functions
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func trace(level int, timestamp int64, message string, extras ...string) {
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if len(message) == 0 || level < logLevel {
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return
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}
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suffix := strings.Join(extras, " | ")
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if len(suffix) > 0 {
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message += " (" + suffix + ")"
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}
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if timestamp >= 0 {
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message += " [" + strconv.Itoa(int(time.Now().UnixMilli()-timestamp)) + "ms" + "]"
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}
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fmt.Println(buildLogMessage(getPrefixForLogLevel(level), message))
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}
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func getPrefixForLogLevel(level int) string {
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switch level {
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case LEVEL_FATAL:
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return "fatal"
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case LEVEL_ERROR:
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return "error"
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case LEVEL_WARNING:
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return "warning"
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case LEVEL_INFO:
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return "info"
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default:
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return "debug"
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}
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}
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func buildLogMessage(prefix string, message string) string {
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return "[" + prefix + "] > " + message
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}
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