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multiple_logger.go
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multiple_logger.go
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package logs
import (
"sync"
"github.com/go-logr/logr"
"golang.org/x/sync/errgroup"
"github.com/ARM-software/golang-utils/utils/commonerrors"
)
type MultipleLogger struct {
mu sync.RWMutex
loggers []Loggers
loggerSource string
}
func (c *MultipleLogger) Close() error {
c.mu.Lock()
defer c.mu.Unlock()
g := new(errgroup.Group)
for i := range c.loggers {
g.Go(c.loggers[i].Close)
}
return g.Wait()
}
func (c *MultipleLogger) Check() error {
c.mu.Lock()
defer c.mu.Unlock()
g := new(errgroup.Group)
for i := range c.loggers {
g.Go(c.loggers[i].Check)
}
return g.Wait()
}
func (c *MultipleLogger) SetLogSource(source string) error {
c.mu.Lock()
defer c.mu.Unlock()
var err error
for i := range c.loggers {
err = c.loggers[i].SetLogSource(source)
}
return err
}
func (c *MultipleLogger) SetLoggerSource(source string) error {
c.mu.Lock()
defer c.mu.Unlock()
return c.setLoggerSource(source)
}
func (c *MultipleLogger) setLoggerSource(source string) error {
var err error
for i := range c.loggers {
err = c.loggers[i].SetLoggerSource(source)
if err != nil {
return err
}
}
c.loggerSource = source
return nil
}
func (c *MultipleLogger) Log(output ...interface{}) {
c.mu.Lock()
defer c.mu.Unlock()
for i := range c.loggers {
c.loggers[i].Log(output...)
}
}
func (c *MultipleLogger) LogError(err ...interface{}) {
c.mu.Lock()
defer c.mu.Unlock()
for i := range c.loggers {
c.loggers[i].LogError(err...)
}
}
func (c *MultipleLogger) GetLoggerSource() string {
c.mu.RLock()
defer c.mu.RUnlock()
return c.loggerSource
}
func (c *MultipleLogger) AppendLogger(l ...logr.Logger) error {
for i := range l {
logger, err := NewLogrLogger(l[i], c.GetLoggerSource())
if err != nil {
return err
}
err = c.Append(logger)
if err != nil {
return err
}
}
return nil
}
func (c *MultipleLogger) Append(l ...Loggers) error {
c.mu.Lock()
defer c.mu.Unlock()
c.loggers = append(c.loggers, l...)
return nil
}
type MultipleLoggerWithLoggerSource struct {
MultipleLogger
}
func (c *MultipleLoggerWithLoggerSource) Append(l ...Loggers) error {
c.mu.Lock()
defer c.mu.Unlock()
c.loggers = append(c.loggers, l...)
return c.setLoggerSource(c.loggerSource)
}
// NewMultipleLoggers returns a logger which abstracts and internally manages a list of loggers.
// if no default loggers are provided, the logger will be set to print to the standard output.
func NewMultipleLoggers(loggerSource string, loggersList ...Loggers) (l IMultipleLoggers, err error) {
if loggerSource == "" {
err = commonerrors.ErrNoLoggerSource
return
}
l = &MultipleLoggerWithLoggerSource{}
err = l.SetLoggerSource(loggerSource)
if err != nil {
return
}
list := loggersList
if len(list) == 0 {
std, err := NewStdLogger(loggerSource)
if err != nil {
return nil, err
}
list = []Loggers{std}
}
err = l.Append(list...)
return
}
// NewCombinedLoggers returns a logger which logs to a list of logger. If list is empty, it will error.
func NewCombinedLoggers(loggersList ...Loggers) (l IMultipleLoggers, err error) {
if len(loggersList) == 0 {
err = commonerrors.ErrNoLogger
return
}
l = &MultipleLogger{}
err = l.Append(loggersList...)
return
}