starter.go

/*
Copyright 2018 Sourabh Bollapragada

Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at

   http://www.apache.org/licenses/LICENSE-2.0

Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
*/

package ifs

import (
	"bazil.org/fuse"
	"bazil.org/fuse/fs"
	"go.uber.org/zap"
	"go.uber.org/zap/zapcore"
)

var (
	fuseServerInstance *fs.Server
)

func FuseServer() *fs.Server {
	return fuseServerInstance
}

func SetupLogger(cfg *LogConfig) {

	loggerCfg := zap.NewDevelopmentConfig()

	if !cfg.Logging {
		logger := zap.NewNop()
		zap.ReplaceGlobals(logger)
		return
	} else if !cfg.Console {
		loggerCfg.OutputPaths = []string{cfg.Path}
		loggerCfg.ErrorOutputPaths = []string{cfg.Path}
	}

	if cfg.Debug {
		loggerCfg.Level.SetLevel(zapcore.DebugLevel)
	} else {
		loggerCfg.Level.SetLevel(zapcore.InfoLevel)
	}

	logger, _ := loggerCfg.Build()

	zap.ReplaceGlobals(logger)

}

func MountRemoteRoots(cfg *FsConfig) {

	//sigChan := make(chan os.Signal, 1)
	//signal.Notify(sigChan, os.Interrupt)
	//
	//go func() {
	//	for range sigChan {
	//		err := fuse.Unmount(cfg.MountPoint)
	//
	//		if err == nil {
	//			zap.L().Info("Unmounted Successfully")
	//		} else {
	//			zap.L().Warn("Unmount Failed",
	//				zap.Error(err),
	//			)
	//		}
	//	}
	//}()

	// TODO Figure out more options to add
	options := []fuse.MountOption{
		fuse.NoAppleDouble(),
		fuse.NoAppleXattr(),
		fuse.VolumeName("IFS Volume"),
	}

	c, err := fuse.Mount(cfg.MountPoint, options...)
	defer c.Close()

	if err != nil {
		zap.L().Fatal("Mount Failed",
			zap.Error(err),
		)
	}

	fuseServerInstance = fs.New(c, nil)

	Ifs().Startup(cfg.RemoteRoots)
	Talker().Startup(cfg.RemoteRoots, cfg.ConnCount)
	Hoarder().Startup(cfg.CacheLocation, 100)
	FileHandler().StartUp()

	FuseServer().Serve(Ifs())

	<-c.Ready
	if err := c.MountError; err != nil {
		zap.L().Fatal("Mount Failed",
			zap.Error(err),
		)
	}

	zap.L().Core().Sync()
}