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minio/commands.go

127 lines
2.7 KiB

package main
import (
"os"
"os/signal"
"os/user"
"syscall"
"github.com/minio/cli"
"github.com/minio/minio/pkg/controller"
"github.com/minio/minio/pkg/server"
"github.com/minio/minio/pkg/server/api"
)
var commands = []cli.Command{
serverCmd,
controllerCmd,
}
var serverCmd = cli.Command{
Name: "server",
Description: "Server mode",
Action: runServer,
CustomHelpTemplate: `NAME:
minio {{.Name}} - {{.Description}}
USAGE:
minio {{.Name}}
EXAMPLES:
1. Start in server mode
$ minio {{.Name}}
`,
}
var controllerCmd = cli.Command{
Name: "controller",
Description: "Control mode",
Action: runController,
CustomHelpTemplate: `NAME:
minio {{.Name}} - {{.Description}}
USAGE:
minio {{.Name}}
EXAMPLES:
1. Get disks from controller
$ minio {{.Name}} disks http://localhost:9001/rpc
2. Get memstats from controller
$ minio {{.Name}} mem http://localhost:9001/rpc
`,
}
func getServerConfig(c *cli.Context) api.Config {
certFile := c.GlobalString("cert")
keyFile := c.GlobalString("key")
if (certFile != "" && keyFile == "") || (certFile == "" && keyFile != "") {
Fatalln("Both certificate and key are required to enable https.")
}
tls := (certFile != "" && keyFile != "")
return api.Config{
Address: c.GlobalString("address"),
TLS: tls,
CertFile: certFile,
KeyFile: keyFile,
RateLimit: c.GlobalInt("ratelimit"),
}
}
func trapServer(doneCh chan struct{}) {
// Go signal notification works by sending `os.Signal`
// values on a channel.
sigs := make(chan os.Signal, 1)
// `signal.Notify` registers the given channel to
// receive notifications of the specified signals.
signal.Notify(sigs, syscall.SIGHUP, syscall.SIGUSR2)
// This executes a blocking receive for signals.
// When it gets one it'll then notify the program
// that it can finish.
<-sigs
doneCh <- struct{}{}
}
func runServer(c *cli.Context) {
_, err := user.Current()
if err != nil {
Fatalf("Unable to determine current user. Reason: %s\n", err)
}
doneCh := make(chan struct{})
go trapServer(doneCh)
apiServerConfig := getServerConfig(c)
err = server.StartServices(apiServerConfig, doneCh)
if err != nil {
Fatalln(err)
}
}
func runController(c *cli.Context) {
_, err := user.Current()
if err != nil {
Fatalf("Unable to determine current user. Reason: %s\n", err)
}
if len(c.Args()) != 2 || c.Args().First() == "help" {
cli.ShowCommandHelpAndExit(c, "controller", 1) // last argument is exit code
}
switch c.Args().First() {
case "disks":
disks, err := controller.GetDisks(c.Args().Tail().First())
if err != nil {
Fatalln(err)
}
Println(disks)
case "mem":
memstats, err := controller.GetMemStats(c.Args().Tail().First())
if err != nil {
Fatalln(err)
}
Println(string(memstats))
}
}