// Start the daemon
func Start(sockFile string, c *cli.Context) error {
var err error
if err = daemonEnvironmentSetup(c); err != nil {
return err
}
defer environmentCleanup()
root := c.String("root")
s := &daemon{
ConvoyDrivers: make(map[string]convoydriver.ConvoyDriver),
}
config := &daemonConfig{
Root: root,
}
exists, err := util.ObjectExists(config)
if err != nil {
return err
}
if exists {
log.Debug("Found existing config. Ignoring command line opts, loading config from ", root)
if err := util.ObjectLoad(config); err != nil {
return err
}
} else {
fd := c.String("mnt-ns")
if fd != "" {
if _, err := os.Stat(fd); err != nil {
return fmt.Errorf("Cannot find mount namespace fd %v", fd)
}
config.MountNamespaceFD = fd
}
driverList := c.StringSlice("drivers")
if len(driverList) == 0 {
return fmt.Errorf("Missing or invalid parameters")
}
log.Debug("Creating config at ", root)
config.DriverList = driverList
config.DefaultDriver = driverList[0]
}
s.daemonConfig = *config
if err := util.InitMountNamespace(s.MountNamespaceFD); err != nil {
return err
}
// driverOpts would be ignored by Convoy Drivers if config already exists
driverOpts := util.SliceToMap(c.StringSlice("driver-opts"))
if err := s.initDrivers(driverOpts); err != nil {
return err
}
if err := s.finializeInitialization(); err != nil {
return err
}
if err := util.ObjectSave(config); err != nil {
return err
}
s.Router = createRouter(s)
if err := util.MkdirIfNotExists(filepath.Dir(sockFile)); err != nil {
return err
}
// This should be safe because lock file prevent starting daemon twice
if _, err := os.Stat(sockFile); err == nil {
log.Warnf("Remove previous sockfile at %v", sockFile)
if err := os.Remove(sockFile); err != nil {
return err
}
}
l, err := net.Listen("unix", sockFile)
if err != nil {
fmt.Println("listen err", err)
return err
}
defer l.Close()
sigs := make(chan os.Signal, 1)
done := make(chan bool, 1)
signal.Notify(sigs, os.Interrupt, os.Kill, syscall.SIGTERM)
go func() {
sig := <-sigs
fmt.Printf("Caught signal %s: shutting down.\n", sig)
done <- true
}()
go func() {
err = http.Serve(l, s.Router)
if err != nil {
log.Error("http server error", err.Error())
}
done <- true
}()
<-done
return nil
}
// Start the daemon
func Start(sockFile string, c *cli.Context) error {
var err error
if err = daemonEnvironmentSetup(c); err != nil {
return err
}
defer environmentCleanup()
root := c.String("root")
s := &daemon{
ConvoyDrivers: make(map[string]convoydriver.ConvoyDriver),
}
config := &daemonConfig{
Root: root,
}
exists, err := util.ObjectExists(config)
if err != nil {
return err
}
driverOpts := util.SliceToMap(c.StringSlice("driver-opts"))
if exists {
log.Debug("Found existing config. Ignoring command line opts, loading config from ", root)
if err := util.ObjectLoad(config); err != nil {
return err
}
} else {
driverList := c.StringSlice("drivers")
if len(driverList) == 0 || driverOpts == nil {
return fmt.Errorf("Missing or invalid parameters")
}
log.Debug("Creating config at ", root)
config.DriverList = driverList
config.DefaultDriver = driverList[0]
}
s.daemonConfig = *config
if err := s.initDrivers(driverOpts); err != nil {
return err
}
if err := s.finializeInitialization(); err != nil {
return err
}
if err := util.ObjectSave(config); err != nil {
return err
}
s.Router = createRouter(s)
if err := util.MkdirIfNotExists(filepath.Dir(sockFile)); err != nil {
return err
}
l, err := net.Listen("unix", sockFile)
if err != nil {
fmt.Println("listen err", err)
return err
}
defer l.Close()
sigs := make(chan os.Signal, 1)
done := make(chan bool, 1)
signal.Notify(sigs, os.Interrupt, os.Kill, syscall.SIGTERM)
go func() {
sig := <-sigs
fmt.Printf("Caught signal %s: shutting down.\n", sig)
done <- true
}()
go func() {
err = http.Serve(l, s.Router)
if err != nil {
log.Error("http server error", err.Error())
}
done <- true
}()
<-done
return nil
}