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package logs
import (
"io"
"log"
"os"
"github.com/sirupsen/logrus"
)
// It's important that this package does not depend on any other package because we
// may want to import it from anywhere, and we don't want to create a circular dependency
// (because Go refuses to compile circular dependencies).
// Global is a global logger that can be used anywhere in the app, for
// _development purposes only_. I want to avoid global variables when possible,
// so if you want to log something that's printed when the -debug flag is set,
// you'll need to ensure the struct you're working with has a logger field (
// and most of them do).
// Global is only available if the LAZYGIT_LOG_PATH environment variable is set.
var Global *logrus.Entry
func init() {
logPath := os.Getenv("LAZYGIT_LOG_PATH")
if logPath != "" {
Global = NewDevelopmentLogger(logPath)
}
}
func NewProductionLogger() *logrus.Entry {
logger := logrus.New()
logger.Out = io.Discard
logger.SetLevel(logrus.ErrorLevel)
return formatted(logger)
}
func NewDevelopmentLogger(logPath string) *logrus.Entry {
logger := logrus.New()
logger.SetLevel(getLogLevel())
file, err := os.OpenFile(logPath, os.O_CREATE|os.O_WRONLY|os.O_APPEND, 0o666)
if err != nil {
log.Fatalf("Unable to log to log file: %v", err)
}
logger.SetOutput(file)
return formatted(logger)
}
func formatted(log *logrus.Logger) *logrus.Entry {
// highly recommended: tail -f development.log | humanlog
// https://github.com/aybabtme/humanlog
log.Formatter = &logrus.JSONFormatter{}
return log.WithFields(logrus.Fields{})
}
func getLogLevel() logrus.Level {
strLevel := os.Getenv("LOG_LEVEL")
level, err := logrus.ParseLevel(strLevel)
if err != nil {
return logrus.DebugLevel
}
return level
}
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