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package logger
import (
"io/ioutil"
"log/syslog"
"os"
log "github.com/sirupsen/logrus"
"gitlab.com/gitlab-org/gitlab-shell/internal/config"
)
func configureLogFormat(cfg *config.Config) {
if cfg.LogFormat == "json" {
log.SetFormatter(&log.JSONFormatter{})
}
}
// Configure configures the logging singleton for operation inside a remote TTY (like SSH). In this
// mode an empty LogFile is not accepted and syslog is used as a fallback when LogFile could not be
// opened for writing.
func Configure(cfg *config.Config) {
logFile, err := os.OpenFile(cfg.LogFile, os.O_WRONLY|os.O_APPEND|os.O_CREATE, 0644)
if err != nil {
progName, _ := os.Executable()
syslogLogger, sysLogErr := syslog.NewLogger(syslog.LOG_ERR|syslog.LOG_USER, 0)
if sysLogErr != nil {
syslogLogger.Print(progName + ": Unable to configure logging: " + err.Error())
}
// Discard logs since a log file was specified but couldn't be opened
log.SetOutput(ioutil.Discard)
}
log.SetOutput(logFile)
configureLogFormat(cfg)
}
// ConfigureStandalone configures the logging singleton for standalone operation. In this mode an
// empty LogFile is treated as logging to standard output and standard output is used as a fallback
// when LogFile could not be opened for writing.
func ConfigureStandalone(cfg *config.Config) {
if cfg.LogFile == "" {
return
}
logFile, err := os.OpenFile(cfg.LogFile, os.O_WRONLY|os.O_APPEND|os.O_CREATE, 0644)
if err != nil {
log.Printf("Unable to configure logging, falling back to stdout: %v", err)
return
}
log.SetOutput(logFile)
configureLogFormat(cfg)
}
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