TUN-528: Move cloudflared into a separate repo

cmd/cloudflared/logger.go

@@ -0,0 +1,68 @@
+package main
+
+import (
+	"fmt"
+	"os"
+
+	"github.com/cloudflare/cloudflared/log"
+
+	"github.com/rifflock/lfshook"
+	"github.com/sirupsen/logrus"
+	"gopkg.in/urfave/cli.v2"
+
+	"github.com/mitchellh/go-homedir"
+	"github.com/pkg/errors"
+)
+
+var logger = log.CreateLogger()
+
+func configMainLogger(c *cli.Context) error {
+	logLevel, err := logrus.ParseLevel(c.String("loglevel"))
+	if err != nil {
+		logger.WithError(err).Error("Unknown logging level specified")
+		return errors.Wrap(err, "Unknown logging level specified")
+	}
+	logger.SetLevel(logLevel)
+	return nil
+}
+
+func configProtoLogger(c *cli.Context) (*logrus.Logger, error) {
+	protoLogLevel, err := logrus.ParseLevel(c.String("proto-loglevel"))
+	if err != nil {
+		logger.WithError(err).Fatal("Unknown protocol logging level specified")
+		return nil, errors.Wrap(err, "Unknown protocol logging level specified")
+	}
+	protoLogger := logrus.New()
+	protoLogger.Level = protoLogLevel
+	return protoLogger, nil
+}
+
+func initLogFile(c *cli.Context, loggers ...*logrus.Logger) error {
+	filePath, err := homedir.Expand(c.String("logfile"))
+	if err != nil {
+		return errors.Wrap(err, "Cannot resolve logfile path")
+	}
+
+	fileMode := os.O_WRONLY | os.O_APPEND | os.O_CREATE | os.O_TRUNC
+	// do not truncate log file if the client has been autoupdated
+	if c.Bool("is-autoupdated") {
+		fileMode = os.O_WRONLY | os.O_APPEND | os.O_CREATE
+	}
+	f, err := os.OpenFile(filePath, fileMode, 0664)
+	if err != nil {
+		errors.Wrap(err, fmt.Sprintf("Cannot open file %s", filePath))
+	}
+	defer f.Close()
+	pathMap := lfshook.PathMap{
+		logrus.InfoLevel:  filePath,
+		logrus.ErrorLevel: filePath,
+		logrus.FatalLevel: filePath,
+		logrus.PanicLevel: filePath,
+	}
+
+	for _, l := range loggers {
+		l.Hooks.Add(lfshook.NewHook(pathMap, &logrus.JSONFormatter{}))
+	}
+
+	return nil
+}