/
instance_stop_linux.go
141 lines (120 loc) · 3.72 KB
/
instance_stop_linux.go
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// Copyright (c) 2018-2020, Sylabs Inc. All rights reserved.
// This software is licensed under a 3-clause BSD license. Please consult the
// LICENSE.md file distributed with the sources of this project regarding your
// rights to use or distribute this software.
package cli
import (
"errors"
"os"
"syscall"
"time"
"github.com/spf13/cobra"
"github.com/sylabs/singularity/v4/docs"
"github.com/sylabs/singularity/v4/internal/app/singularity"
"github.com/sylabs/singularity/v4/internal/pkg/util/signal"
"github.com/sylabs/singularity/v4/pkg/cmdline"
"github.com/sylabs/singularity/v4/pkg/sylog"
)
func init() {
addCmdInit(func(cmdManager *cmdline.CommandManager) {
cmdManager.RegisterFlagForCmd(&instanceStopUserFlag, instanceStopCmd)
cmdManager.RegisterFlagForCmd(&instanceStopAllFlag, instanceStopCmd)
cmdManager.RegisterFlagForCmd(&instanceStopForceFlag, instanceStopCmd)
cmdManager.RegisterFlagForCmd(&instanceStopSignalFlag, instanceStopCmd)
cmdManager.RegisterFlagForCmd(&instanceStopTimeoutFlag, instanceStopCmd)
})
}
// -u|--user
var instanceStopUser string
var instanceStopUserFlag = cmdline.Flag{
ID: "instanceStopUserFlag",
Value: &instanceStopUser,
DefaultValue: "",
Name: "user",
ShortHand: "u",
Usage: "if running as root, stop instances belonging to user",
Tag: "<username>",
EnvKeys: []string{"USER"},
}
// -a|--all
var instanceStopAll bool
var instanceStopAllFlag = cmdline.Flag{
ID: "instanceStopAllFlag",
Value: &instanceStopAll,
DefaultValue: false,
Name: "all",
ShortHand: "a",
Usage: "stop all user's instances",
EnvKeys: []string{"ALL"},
}
// -f|--force
var instanceStopForce bool
var instanceStopForceFlag = cmdline.Flag{
ID: "instanceStopForceFlag",
Value: &instanceStopForce,
DefaultValue: false,
Name: "force",
ShortHand: "F",
Usage: "force kill instance",
EnvKeys: []string{"FORCE"},
}
// -s|--signal
var instanceStopSignal string
var instanceStopSignalFlag = cmdline.Flag{
ID: "instanceStopSignalFlag",
Value: &instanceStopSignal,
DefaultValue: "",
Name: "signal",
ShortHand: "s",
Usage: "signal sent to the instance",
Tag: "<signal>",
EnvKeys: []string{"SIGNAL"},
}
// -t|--timeout
var instanceStopTimeout int
var instanceStopTimeoutFlag = cmdline.Flag{
ID: "instanceStopTimeoutFlag",
Value: &instanceStopTimeout,
DefaultValue: 10,
Name: "timeout",
ShortHand: "t",
Usage: "force kill non stopped instances after X seconds",
}
// singularity instance stop
var instanceStopCmd = &cobra.Command{
Args: cobra.RangeArgs(0, 1),
DisableFlagsInUseLine: true,
RunE: func(cmd *cobra.Command, args []string) error {
if isOCI {
sylog.Fatalf("Instances are not yet supported in OCI-mode. Omit --oci, or use --no-oci, to manage a non-OCI Singularity instance.")
}
if len(args) == 0 && !instanceStopAll {
return errors.New("invalid command")
}
uid := os.Getuid()
if instanceStopUser != "" && uid != 0 {
sylog.Fatalf("Only root user can stop user's instances")
}
sig := syscall.SIGINT
if instanceStopSignal != "" {
var err error
sig, err = signal.Convert(instanceStopSignal)
if err != nil {
sylog.Fatalf("Could not convert stop signal: %s", err)
}
}
if instanceStopForce {
sig = syscall.SIGKILL
}
name := "*"
if len(args) > 0 {
name = args[0]
}
timeout := time.Duration(instanceStopTimeout) * time.Second
return singularity.StopInstance(name, instanceStopUser, sig, timeout)
},
Use: docs.InstanceStopUse,
Short: docs.InstanceStopShort,
Long: docs.InstanceStopLong,
Example: docs.InstanceStopExample,
}