/
main.go
173 lines (140 loc) · 4.09 KB
/
main.go
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/*
* Copyright 2021, 2022 Hewlett Packard Enterprise Development LP
* Other additional copyright holders may be indicated within.
*
* The entirety of this work is 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 main
import (
"flag"
"fmt"
"log"
"net"
"os"
"os/signal"
"runtime"
"syscall"
"github.com/takama/daemon"
"google.golang.org/grpc"
pb "github.com/NearNodeFlash/nnf-dm/daemons/compute/client-go/api"
"github.com/NearNodeFlash/nnf-dm/daemons/compute/server/auth"
server "github.com/NearNodeFlash/nnf-dm/daemons/compute/server/servers"
"github.com/NearNodeFlash/nnf-dm/daemons/compute/server/version"
)
const (
name = "nnf-dm"
description = "Near-Node Flash (NNF) Data Movement Service"
usage = "Usage nnf-dm install | remove | start | stop | status"
)
type Service struct {
daemon.Daemon
}
func (service *Service) Manage() (string, error) {
if len(os.Args) > 1 {
command := os.Args[1]
switch command {
case "install":
return service.Install(os.Args[2:]...)
case "remove":
return service.Remove()
case "start":
return service.Start()
case "stop":
return service.Stop()
case "status":
return service.Status()
}
}
var socketAddr = flag.String("socket", "/var/run/nnf-dm.sock", "path of the NNF data movement socket")
options, err := server.GetOptions()
if err != nil {
return "Failed to get nnf-dm server options", err
}
flag.Parse()
server, err := server.Create(options)
if err != nil {
return "Failed to create nnf-dm server", err
}
// Set up channel on which to send signal notifications; must use a buffered
// channel or risk missing the signal if we're not setup to receive the signal
// when it is sent.
interrupt := make(chan os.Signal, 1)
signal.Notify(interrupt, os.Interrupt, os.Kill, syscall.SIGTERM)
// Set up listener to our socket address
os.Remove(*socketAddr)
listener, err := net.Listen("unix", *socketAddr)
if err != nil {
return fmt.Sprintf("Failed to listen at socket %s", *socketAddr), err
}
// Set socket permissions so non-root users can communicate
if err = os.Chmod(*socketAddr, 0766); err != nil {
return fmt.Sprintf("Failed to set permissions on socket %s", *socketAddr), err
}
go service.Run(server, listener)
for {
select {
case <-interrupt:
stdlog.Println("Stop listening at ", listener.Addr())
listener.Close()
return "Daemon was killed", nil
}
}
}
func (service *Service) Run(srv server.Server, listener net.Listener) error {
stdlog.Println("Version:", version.BuildVersion())
go func() {
if err := srv.StartManager(); err != nil {
errlog.Println("Manager Error: ", err)
listener.Close()
os.Exit(1)
}
}()
grpcServer := grpc.NewServer(grpc.Creds(&auth.ServerAuthCredentials{}))
pb.RegisterDataMoverServer(grpcServer, srv)
stdlog.Println("Start listening at ", listener.Addr())
if err := grpcServer.Serve(listener); err != nil {
return err
}
return nil
}
var stdlog, errlog *log.Logger
func init() {
stdlog = log.New(os.Stdout, "", log.Ldate|log.Ltime)
errlog = log.New(os.Stderr, "", log.Ldate|log.Ltime)
}
func main() {
if len(os.Args) > 1 && os.Args[1] == "version" {
fmt.Println("Version", version.BuildVersion())
os.Exit(0)
}
kindFn := func() daemon.Kind {
if runtime.GOOS == "darwin" {
return daemon.UserAgent
}
return daemon.SystemDaemon
}
d, err := daemon.New(name, description, kindFn(), "network-online.target")
if err != nil {
errlog.Println("Error: ", err)
os.Exit(1)
}
service := &Service{d}
status, err := service.Manage()
if err != nil {
errlog.Println(status, "\nError: ", err)
os.Exit(1)
}
fmt.Println(status)
}