Support more systemd Unit file settings
This commit is contained in:
Christian Muehlhaeuser
parent
72e76cdd9a
commit
4121ded470
96
createcmd.go
96
createcmd.go
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@ -6,21 +6,32 @@ import (
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"os"
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"path/filepath"
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"strconv"
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"strings"
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"github.com/coreos/go-systemd/unit"
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"github.com/spf13/cobra"
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)
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type CreateOptions struct {
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Executable string
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Type string
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Description string
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Exec string
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ExecStartPre string
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ExecStartPost string
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ExecReload string
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ExecStop string
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ExecStopPost string
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WorkingDirectory string
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RootDirectory string
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User string
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Group string
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RestartSec uint64
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Restart string
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Restart string
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RestartSec uint64
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TimeoutStartSec uint64
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TimeoutStopSec uint64
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After string
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WantedBy string
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@ -39,24 +50,48 @@ var (
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return fmt.Errorf("Can't find systemd targets: %s", err)
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}
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createOpts.Type = strings.ToLower(createOpts.Type)
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switch createOpts.Type {
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case "simple":
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case "forking":
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case "oneshot":
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case "dbus":
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case "notify":
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case "idle":
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default:
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return fmt.Errorf("No such service type: %s", createOpts.Type)
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}
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createOpts.Restart = strings.ToLower(createOpts.Restart)
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switch createOpts.Restart {
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case "no":
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case "always":
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case "on-success":
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case "on-failure":
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case "on-abnormal":
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case "on-abort":
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case "on-watchdog":
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default:
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return fmt.Errorf("No such service type: %s", createOpts.Type)
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}
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if len(args) >= 1 {
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createOpts.Executable = args[0]
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createOpts.Exec = args[0]
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} else {
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createOpts.Executable, err = readString("Which executable do you want to create a service for", true)
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createOpts.Exec, err = readString("Which executable do you want to create a service for", true)
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if err != nil {
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return fmt.Errorf("create needs an executable to create a service for")
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}
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}
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stat, err := os.Stat(createOpts.Executable)
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stat, err := os.Stat(createOpts.Exec)
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if os.IsNotExist(err) {
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return fmt.Errorf("Can't create service: no such file")
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return fmt.Errorf("Could not find executable: %s is not a file", createOpts.Exec)
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}
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if stat.IsDir() {
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return fmt.Errorf("Can't create service: target is a directory")
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return fmt.Errorf("Could not find executable: %s is a directory", createOpts.Exec)
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}
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if stat.Mode()&0111 == 0 {
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return fmt.Errorf("Can't create service: target is not executable")
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return fmt.Errorf("%s is not executable", createOpts.Exec)
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}
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if len(args) >= 2 {
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@ -65,7 +100,7 @@ var (
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createOpts.Description, _ = readString("Description", true)
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}
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if len(createOpts.Description) == 0 {
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return fmt.Errorf("create needs a description for this service")
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return fmt.Errorf("Description for this service can't be empty")
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}
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if len(args) >= 4 {
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@ -88,7 +123,7 @@ var (
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}
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}
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if !ts.Contains(createOpts.After) {
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return fmt.Errorf("Can't create service: no such target")
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return fmt.Errorf("Could not create service: no such target")
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}
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if len(createOpts.WantedBy) == 0 {
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@ -98,7 +133,7 @@ var (
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}
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}
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if !ts.Contains(createOpts.WantedBy) {
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return fmt.Errorf("Can't create service: no such target")
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return fmt.Errorf("Could not create service: no such target")
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}
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return executeCreate()
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@ -111,11 +146,23 @@ func executeCreate() error {
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&unit.UnitOption{"Unit", "Description", createOpts.Description},
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&unit.UnitOption{"Unit", "After", createOpts.After},
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&unit.UnitOption{"Service", "ExecStart", createOpts.Executable},
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&unit.UnitOption{"Service", "Type", createOpts.Type},
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&unit.UnitOption{"Service", "WorkingDirectory", createOpts.WorkingDirectory},
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&unit.UnitOption{"Service", "RootDirectory", createOpts.RootDirectory},
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&unit.UnitOption{"Service", "ExecStart", createOpts.Exec},
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&unit.UnitOption{"Service", "ExecStartPre", createOpts.ExecStartPre},
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&unit.UnitOption{"Service", "ExecStartPost", createOpts.ExecStartPost},
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&unit.UnitOption{"Service", "ExecReload", createOpts.ExecReload},
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&unit.UnitOption{"Service", "ExecStop", createOpts.ExecStop},
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&unit.UnitOption{"Service", "ExecStopPost", createOpts.ExecStopPost},
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&unit.UnitOption{"Service", "User", createOpts.User},
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&unit.UnitOption{"Service", "Group", createOpts.Group},
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&unit.UnitOption{"Service", "Restart", createOpts.Restart},
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&unit.UnitOption{"Service", "RestartSec", strconv.FormatUint(createOpts.RestartSec, 10)},
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&unit.UnitOption{"Service", "TimeoutStartSec", strconv.FormatUint(createOpts.TimeoutStartSec, 10)},
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&unit.UnitOption{"Service", "TimeoutStopSec", strconv.FormatUint(createOpts.TimeoutStopSec, 10)},
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&unit.UnitOption{"Install", "WantedBy", createOpts.WantedBy},
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}
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@ -123,19 +170,19 @@ func executeCreate() error {
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r := unit.Serialize(u)
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b, err := ioutil.ReadAll(r)
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if err != nil {
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return fmt.Errorf("encountered error while reading output: %v", err)
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return fmt.Errorf("Encountered error while reading output: %v", err)
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}
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filename := filepath.Base(createOpts.Executable) + ".service"
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filename := filepath.Base(createOpts.Exec) + ".service"
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f, err := os.Create(filename)
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if err != nil {
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return fmt.Errorf("Can't write file: %s", err)
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return fmt.Errorf("Could not create file: %s", err)
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}
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defer f.Close()
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_, err = f.Write(b)
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if err != nil {
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return fmt.Errorf("Can't write to file: %s", err)
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return fmt.Errorf("Could not write to file: %s", err)
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}
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fmt.Printf("Generated Unit file: %s\n%s\n", filename, b)
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@ -143,12 +190,23 @@ func executeCreate() error {
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}
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func init() {
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createCmd.PersistentFlags().StringVarP(&createOpts.WorkingDirectory, "workingdir", "w", "", "WorkingDirectory of the service")
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createCmd.PersistentFlags().StringVarP(&createOpts.Type, "type", "t", "simple", "Type of service (simple, forking, oneshot, dbus, notify or idle)")
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createCmd.PersistentFlags().StringVar(&createOpts.ExecStartPre, "execstartpre", "", "Executable to run before the service starts")
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createCmd.PersistentFlags().StringVar(&createOpts.ExecStartPost, "execstartpost", "", "Executable to run after the service started")
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createCmd.PersistentFlags().StringVar(&createOpts.ExecReload, "execreload", "", "Executable to run to reload the service")
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createCmd.PersistentFlags().StringVar(&createOpts.ExecStop, "execstop", "", "Executable to run to stop the service")
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createCmd.PersistentFlags().StringVar(&createOpts.ExecStopPost, "execstoppost", "", "Executable to run after the service stopped")
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createCmd.PersistentFlags().StringVarP(&createOpts.WorkingDirectory, "workingdir", "w", "", "Working-directory of the service")
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createCmd.PersistentFlags().StringVar(&createOpts.RootDirectory, "rootdir", "", "Root-directory of the service")
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createCmd.PersistentFlags().StringVarP(&createOpts.User, "user", "u", "root", "User to run service as")
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createCmd.PersistentFlags().StringVarP(&createOpts.Group, "group", "g", "root", "Group to run service as")
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createCmd.PersistentFlags().StringVarP(&createOpts.Restart, "restart", "r", "on-failure", "When to restart the service")
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createCmd.PersistentFlags().StringVarP(&createOpts.Restart, "restart", "r", "on-failure", "When to restart (no, always, on-success, on-failure, on-abnormal, on-abort or on-watchdog)")
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createCmd.PersistentFlags().Uint64VarP(&createOpts.RestartSec, "restartsec", "s", 5, "How many seconds between restarts")
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createCmd.PersistentFlags().Uint64Var(&createOpts.TimeoutStartSec, "timeoutstartsec", 0, "How many seconds to wait for a startup")
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createCmd.PersistentFlags().Uint64Var(&createOpts.TimeoutStopSec, "timeoutstopsec", 0, "How many seconds to wait when stoping a service")
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createCmd.PersistentFlags().StringVarP(&createOpts.After, "after", "a", "", "Target after which the service will be started")
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createCmd.PersistentFlags().StringVarP(&createOpts.WantedBy, "wantedby", "b", "", "This service is wanted by this target")
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