Import/Export backend

internal/cmd/main.go

@@ -0,0 +1,86 @@
+// Copyright (c) 2020 Proton Technologies AG
+//
+// This file is part of ProtonMail Bridge.
+//
+// ProtonMail Bridge is free software: you can redistribute it and/or modify
+// it under the terms of the GNU General Public License as published by
+// the Free Software Foundation, either version 3 of the License, or
+// (at your option) any later version.
+//
+// ProtonMail Bridge is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with ProtonMail Bridge.  If not, see <https://www.gnu.org/licenses/>.
+
+package cmd
+
+import (
+	"os"
+	"runtime"
+
+	"github.com/ProtonMail/proton-bridge/pkg/constants"
+	"github.com/getsentry/raven-go"
+	"github.com/sirupsen/logrus"
+	"github.com/urfave/cli"
+)
+
+var (
+	log = logrus.WithField("pkg", "cmd") //nolint[gochecknoglobals]
+
+	baseFlags = []cli.Flag{ //nolint[gochecknoglobals]
+		cli.StringFlag{
+			Name:  "log-level, l",
+			Usage: "Set the log level (one of panic, fatal, error, warn, info, debug, debug-client, debug-server)"},
+		cli.BoolFlag{
+			Name:  "cli, c",
+			Usage: "Use command line interface"},
+		cli.StringFlag{
+			Name:  "version-json, g",
+			Usage: "Generate json version file"},
+		cli.BoolFlag{
+			Name:  "mem-prof, m",
+			Usage: "Generate memory profile"},
+		cli.BoolFlag{
+			Name:  "cpu-prof, p",
+			Usage: "Generate CPU profile"},
+	}
+)
+
+// Main sets up Sentry, filters out unwanted args, creates app and runs it.
+func Main(appName, usage string, extraFlags []cli.Flag, run func(*cli.Context) error) {
+	if err := raven.SetDSN(constants.DSNSentry); err != nil {
+		log.WithError(err).Errorln("Can not setup sentry DSN")
+	}
+	raven.SetRelease(constants.Revision)
+
+	filterProcessSerialNumberFromArgs()
+	filterRestartNumberFromArgs()
+
+	app := newApp(appName, usage, extraFlags, run)
+
+	logrus.SetLevel(logrus.InfoLevel)
+	log.WithField("version", constants.Version).
+		WithField("revision", constants.Revision).
+		WithField("build", constants.BuildTime).
+		WithField("runtime", runtime.GOOS).
+		WithField("args", os.Args).
+		WithField("appName", app.Name).
+		Info("Run app")
+
+	if err := app.Run(os.Args); err != nil {
+		log.Error("Program exited with error: ", err)
+	}
+}
+
+func newApp(appName, usage string, extraFlags []cli.Flag, run func(*cli.Context) error) *cli.App {
+	app := cli.NewApp()
+	app.Name = appName
+	app.Usage = usage
+	app.Version = constants.BuildVersion
+	app.Flags = append(baseFlags, extraFlags...) //nolint[gocritic]
+	app.Action = run
+	return app
+}