func ReadLoggingConfig(modes []string, logsPath string, cfg *ini.File) {
Close()
defaultLevelName, _ := getLogLevelFromConfig("log", "info", cfg)
defaultFilters := getFilters(cfg.Section("log").Key("filters").Strings(" "))
handlers := make([]log15.Handler, 0)
for _, mode := range modes {
mode = strings.TrimSpace(mode)
sec, err := cfg.GetSection("log." + mode)
if err != nil {
Root.Error("Unknown log mode", "mode", mode)
}
// Log level.
_, level := getLogLevelFromConfig("log."+mode, defaultLevelName, cfg)
modeFilters := getFilters(sec.Key("filters").Strings(" "))
format := getLogFormat(sec.Key("format").MustString(""))
var handler log15.Handler
// Generate log configuration.
switch mode {
case "console":
handler = log15.StreamHandler(os.Stdout, format)
case "file":
fileName := sec.Key("file_name").MustString(filepath.Join(logsPath, "grafana.log"))
os.MkdirAll(filepath.Dir(fileName), os.ModePerm)
fileHandler := NewFileWriter()
fileHandler.Filename = fileName
fileHandler.Format = format
fileHandler.Rotate = sec.Key("log_rotate").MustBool(true)
fileHandler.Maxlines = sec.Key("max_lines").MustInt(1000000)
fileHandler.Maxsize = 1 << uint(sec.Key("max_size_shift").MustInt(28))
fileHandler.Daily = sec.Key("daily_rotate").MustBool(true)
fileHandler.Maxdays = sec.Key("max_days").MustInt64(7)
fileHandler.Init()
loggersToClose = append(loggersToClose, fileHandler)
handler = fileHandler
case "syslog":
sysLogHandler := NewSyslog(sec, format)
loggersToClose = append(loggersToClose, sysLogHandler)
handler = sysLogHandler
}
for key, value := range defaultFilters {
if _, exist := modeFilters[key]; !exist {
modeFilters[key] = value
}
}
handler = LogFilterHandler(level, modeFilters, handler)
handlers = append(handlers, handler)
}
Root.SetHandler(log15.MultiHandler(handlers...))
}
// DebugContext returns a new Context with an additional handler with a more
// verbose filter (using the Debug level) and a Buffer in which all logging
// statements will be (also) written to.
func (context *Context) DebugContext(logCtx ...interface{}) *Context {
var buffer bytes.Buffer
childContext := &Context{
Config: context.Config,
Log: context.Log.New(logCtx...),
logBuffer: &buffer,
handler: log15.MultiHandler(
log15.StreamHandler(&buffer, log15.LogfmtFormat()),
context.handler,
),
memoryCollector: NewMemoryEventCollector(),
EventFactory: context.EventFactory,
}
childContext.EventCollector = NewMultiEventCollector(
childContext.memoryCollector,
context.EventCollector,
)
childContext.EventFactory.Register(childContext.memoryCollector)
childContext.Log.SetHandler(childContext.handler)
return childContext
}
