ectl: move enable/disable service functionality back into ectl

src/ectl/go.mod

@@ -2,4 +2,7 @@ module ectl
 
 go 1.23.4
 
-require github.com/spf13/pflag v1.0.10
+require (
+	github.com/spf13/pflag v1.0.10
+	gopkg.in/yaml.v3 v3.0.1
+)

src/ectl/go.sum

@@ -1,2 +1,6 @@
 github.com/spf13/pflag v1.0.10 h1:4EBh2KAYBwaONj6b2Ye1GiHfwjqyROoF4RwYO+vPwFk=
 github.com/spf13/pflag v1.0.10/go.mod h1:McXfInJRrz4CZXVZOBLb0bTZqETkiAhM9Iw0y3An2Bg=
+gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405 h1:yhCVgyC4o1eVCa2tZl7eS0r+SDo693bJlVdllGtEeKM=
+gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
+gopkg.in/yaml.v3 v3.0.1 h1:fxVm/GzAzEWqLHuvctI91KS9hhNmmWOoWu0XTYJS7CA=
+gopkg.in/yaml.v3 v3.0.1/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=

src/ectl/sv_subcommand.go

@@ -45,10 +45,6 @@ func handleServiceSubcommand() {
 		currentFlagSet.BoolP("json", "j", false, "Return output in json format")
 		setupFlagsAndHelp(currentFlagSet, fmt.Sprintf("ectl %s %s <options> <service>", os.Args[1], subcommand), fmt.Sprintf("%s the specified service", strings.Title(subcommand)), os.Args[3:])
 
-		// Dial esvm socket
-		dialSocket()
-		defer conn.Close()
-
 		enableDisableService(subcommand)
 	case "status":
 		// Setup flags and help
@@ -158,67 +154,57 @@ func enableDisableService(subcommand string) {
 		return
 	}
 
+	service := currentFlagSet.Arg(0)
+
 	// Get service stage
 	stage := 3
-	if len(currentFlagSet.Args()) > 1 {
+	if subcommand == "disable" {
+		stage = 0
+	} else if len(currentFlagSet.Args()) > 1 {
 		flagStr := currentFlagSet.Arg(1)
 		_stage, err := strconv.ParseInt(flagStr, 10, 32)
 		if err != nil {
 			log.Fatalf("Error: could not parse stage number: %s", err)
 		}
 		stage = int(_stage)
-	} else if subcommand == "disable" {
-		stage = 0
 	}
 
-	type ServiceCommandJsonStruct struct {
-		Command string `json:"command"`
-		Service string `json:"service"`
-		Stage   int    `json:"stage"`
-	}
-	serviceCommandJson := ServiceCommandJsonStruct{
-		Command: "set_enabled",
-		Service: currentFlagSet.Arg(0),
-		Stage:   stage,
+	verb := "enabled"
+	if stage == 0 {
+		verb = "disabled"
 	}
 
-	// Encode struct to json string
-	jsonData, err := json.Marshal(serviceCommandJson)
-	if err != nil {
-		log.Fatalf("Could not encode JSON data! Error: %s\n", err)
-	}
-
-	_, err = conn.Write(jsonData)
-	if err != nil {
-		log.Fatalf("Could not write JSON data to socket! Error: %s\n", err)
-	}
-
-	// Read data from the connection.
-	data, err := readAllConn(conn)
-	if err != nil {
-		log.Fatalf("Could not read data from socket! Error: %s\n", err)
+	// Return if service is already enabled
+	if _, enabledStage := isServiceEnabled(service); enabledStage == stage {
+		if printJson {
+			fmt.Printf("{\"success\":\"Service (%s) is already %s\"}\n", service, verb)
+		} else {
+			fmt.Printf("Service (%s) is already %s\n", service, verb)
+		}
 		return
 	}
 
-	// Print json data if flag is set
+	// Enable service
+	err := setServiceEnabled(service, stage)
+	if err != nil {
+		verb := "enable"
+		if stage == 0 {
+			verb = "disable"
+		}
+
+		if printJson {
+			fmt.Printf("{\"error\":\"Could not %s service! Error: %s\"}\n", verb, err)
+		} else {
+			fmt.Printf("Could not %s service! Error: %s\n", verb, err)
+		}
+		os.Exit(1)
+	}
+
 	if printJson {
-		fmt.Println(string(data))
+		fmt.Printf("{\"success\":\"Service (%s) was %s sucessfully\"}\n", service, verb)
 		return
-	}
-
-	// Decoode JSON data
-	var returnedJsonData map[string]any
-	err = json.Unmarshal(data, &returnedJsonData)
-	if err != nil {
-		log.Fatalf("Could not decode JSON data from connection!")
-	}
-
-	if err, ok := returnedJsonData["error"]; ok {
-		log.Fatal(err)
-	} else if msg, ok := returnedJsonData["success"]; ok {
-		fmt.Println(msg)
 	} else {
-		log.Fatal("Connection returned empty string!")
+		fmt.Printf("Service (%s) was %s sucessfully\n", service, verb)
 	}
 }
 
@@ -259,12 +245,6 @@ func showServiceStatus() {
 		return
 	}
 
-	// Print json data if flag is set
-	if printJson {
-		fmt.Println(string(data))
-		return
-	}
-
 	// Decoode JSON data
 	var returnedJsonData map[string]any
 	err = json.Unmarshal(data, &returnedJsonData)
@@ -273,13 +253,28 @@ func showServiceStatus() {
 	}
 
 	if err, ok := returnedJsonData["error"]; ok {
-		log.Fatal(err)
+		if printJson {
+			fmt.Println(string(data))
+			os.Exit(1)
+		} else {
+			log.Fatal(err)
+		}
+	}
+
+	// Set is_enabled and stage fields in json data
+	returnedJsonData["is_enabled"], returnedJsonData["stage"] = isServiceEnabled(currentFlagSet.Arg(0))
+
+	// Print json data if flag is set
+	if printJson {
+		data, _ = json.Marshal(returnedJsonData)
+		fmt.Println(string(data))
+		return
 	}
 
 	serviceState := returnedJsonData["state"].(string)
 	serviceDescription := returnedJsonData["description"].(string)
 	serviceEnabled := returnedJsonData["is_enabled"].(bool)
-	serviceStage := int(returnedJsonData["stage"].(float64))
+	serviceStage := returnedJsonData["stage"].(int)
 	processID := int(returnedJsonData["process_id"].(float64))
 
 	fmt.Printf("Name: %s\n", currentFlagSet.Arg(0))

src/ectl/utils.go

@@ -0,0 +1,88 @@
+package main
+
+import (
+	"os"
+	"path"
+	"slices"
+	"strings"
+
+	"gopkg.in/yaml.v3"
+)
+
+func isServiceEnabled(service string) (bool, int) {
+	for stage, services := range readEnabledServices() {
+		if slices.Contains(services, service) {
+			return true, stage
+		}
+	}
+
+	return false, 0
+}
+
+func setServiceEnabled(service string, stage int) error {
+	// Get current service enabled status
+	_, s := isServiceEnabled(service)
+
+	// Return if service is already in correct state
+	if s == stage {
+		return nil
+	}
+
+	EnabledServices := readEnabledServices()
+
+	// Remove service from current stage
+	EnabledServices[s] = slices.DeleteFunc(EnabledServices[s], func(name string) bool {
+		return name == service
+	})
+	if len(EnabledServices[s]) == 0 {
+		delete(EnabledServices, s)
+	}
+
+	// Add service to stage
+	if stage != 0 {
+		EnabledServices[stage] = append(EnabledServices[stage], service)
+	}
+
+	// Save enabled services to file
+	data, err := yaml.Marshal(EnabledServices)
+	if err != nil {
+		return err
+	}
+	err = os.WriteFile(path.Join(sysconfdir, "esvm/enabled_services"), data, 0644)
+	if err != nil {
+		return err
+	}
+
+	return nil
+}
+
+func readEnabledServices() (EnabledServices map[int][]string) {
+	EnabledServices = make(map[int][]string)
+
+	data, err := os.ReadFile(path.Join(sysconfdir, "esvm/enabled_services"))
+	if err != nil {
+		return EnabledServices
+	}
+
+	err = yaml.Unmarshal(data, &EnabledServices)
+	if err != nil {
+		// Assume old plain text format
+		for _, service := range strings.Split(strings.TrimSpace(string(data)), "\n") {
+			EnabledServices[3] = append(EnabledServices[3], service)
+		}
+
+		// Update enabled_services file
+		data, err := yaml.Marshal(EnabledServices)
+		if err != nil {
+			return EnabledServices
+		}
+		err = os.WriteFile(path.Join(sysconfdir, "esvm/enabled_services"), data, 0644)
+		if err != nil {
+			return EnabledServices
+		}
+
+		return EnabledServices
+	}
+
+	return EnabledServices
+}