chore: import upstream snapshot with attribution

cmd/micro/cli/remote/remote.go

@@ -0,0 +1,365 @@
+// Package remote provides remote server operations for micro
+package remote
+
+import (
+	"bufio"
+	"fmt"
+	"os"
+	"os/exec"
+	"path/filepath"
+	"strings"
+	"syscall"
+
+	"github.com/urfave/cli/v2"
+	"go-micro.dev/v6/cmd"
+)
+
+// Status shows status of services (local or remote)
+func Status(c *cli.Context) error {
+	remoteHost := c.String("remote")
+	if remoteHost != "" {
+		return remoteStatus(remoteHost)
+	}
+	return localStatus(c)
+}
+
+func localStatus(c *cli.Context) error {
+	homeDir, err := os.UserHomeDir()
+	if err != nil {
+		return fmt.Errorf("failed to get home dir: %w", err)
+	}
+	runDir := filepath.Join(homeDir, "micro", "run")
+	files, err := os.ReadDir(runDir)
+	if err != nil {
+		fmt.Println("No services running locally.")
+		fmt.Println("\nStart services with: micro run")
+		return nil
+	}
+
+	var hasServices bool
+	fmt.Printf("%-20s %-10s %-8s %s\n", "SERVICE", "STATUS", "PID", "DIRECTORY")
+	fmt.Println(strings.Repeat("-", 70))
+
+	for _, f := range files {
+		if f.IsDir() || !strings.HasSuffix(f.Name(), ".pid") {
+			continue
+		}
+		hasServices = true
+		service := f.Name()[:len(f.Name())-4]
+		pidFilePath := filepath.Join(runDir, f.Name())
+		pidFile, err := os.Open(pidFilePath)
+		if err != nil {
+			continue
+		}
+		var pid int
+		var dir string
+		scanner := bufio.NewScanner(pidFile)
+		if scanner.Scan() {
+			_, _ = fmt.Sscanf(scanner.Text(), "%d", &pid)
+		}
+		if scanner.Scan() {
+			dir = scanner.Text()
+		}
+		pidFile.Close()
+
+		status := "\u2717 stopped"
+		if pid > 0 {
+			proc, err := os.FindProcess(pid)
+			if err == nil {
+				if err := proc.Signal(syscall.Signal(0)); err == nil {
+					status = "\u25cf running"
+				}
+			}
+		}
+		fmt.Printf("%-20s %-10s %-8d %s\n", service, status, pid, dir)
+	}
+
+	if !hasServices {
+		fmt.Println("No services running locally.")
+		fmt.Println("\nStart services with: micro run")
+	}
+
+	return nil
+}
+
+func remoteStatus(host string) error {
+	// Get list of micro services via systemctl
+	listCmd := exec.Command("ssh", host, "systemctl list-units 'micro@*' --no-legend --no-pager 2>/dev/null || true")
+	output, err := listCmd.Output()
+	if err != nil {
+		return fmt.Errorf("failed to get status from %s: %w", host, err)
+	}
+
+	lines := strings.Split(strings.TrimSpace(string(output)), "\n")
+	if len(lines) == 0 || (len(lines) == 1 && lines[0] == "") {
+		fmt.Printf("%s\n", host)
+		fmt.Println(strings.Repeat("\u2501", 50))
+		fmt.Println("\nNo services deployed.")
+		fmt.Println("\nDeploy with: micro deploy " + host)
+		return nil
+	}
+
+	fmt.Printf("%s\n", host)
+	fmt.Println(strings.Repeat("\u2501", 50))
+	fmt.Println()
+
+	for _, line := range lines {
+		if line == "" {
+			continue
+		}
+		parts := strings.Fields(line)
+		if len(parts) < 4 {
+			continue
+		}
+
+		unit := parts[0]
+		loadState := parts[1]
+		activeState := parts[2]
+		subState := parts[3]
+
+		// Extract service name from micro@servicename.service
+		serviceName := strings.TrimPrefix(unit, "micro@")
+		serviceName = strings.TrimSuffix(serviceName, ".service")
+
+		// Get more details
+		statusIcon := "\u25cf"
+		statusText := subState
+		if activeState != "active" || subState != "running" {
+			statusIcon = "\u2717"
+		}
+
+		_ = loadState // unused but parsed
+
+		fmt.Printf("  %-15s %s %s\n", serviceName, statusIcon, statusText)
+	}
+
+	fmt.Println()
+	return nil
+}
+
+// Logs shows logs for services (local or remote)
+func Logs(c *cli.Context) error {
+	remoteHost := c.String("remote")
+	service := c.Args().First()
+	follow := c.Bool("follow") || c.Bool("f")
+	lines := c.Int("lines")
+
+	if remoteHost != "" {
+		return remoteLogs(remoteHost, service, follow, lines)
+	}
+	return localLogs(c, service, follow, lines)
+}
+
+func localLogs(c *cli.Context, service string, follow bool, lines int) error {
+	homeDir, err := os.UserHomeDir()
+	if err != nil {
+		return fmt.Errorf("failed to get home dir: %w", err)
+	}
+	logDir := filepath.Join(homeDir, "micro", "logs")
+
+	if service == "" {
+		// List available logs
+		files, err := os.ReadDir(logDir)
+		if err != nil {
+			fmt.Println("No logs available.")
+			return nil
+		}
+
+		fmt.Println("Available logs:")
+		for _, f := range files {
+			if strings.HasSuffix(f.Name(), ".log") {
+				name := strings.TrimSuffix(f.Name(), ".log")
+				fmt.Printf("  %s\n", name)
+			}
+		}
+		fmt.Println("\nView logs: micro logs <service>")
+		return nil
+	}
+
+	logPath := filepath.Join(logDir, service+".log")
+	if _, err := os.Stat(logPath); os.IsNotExist(err) {
+		return fmt.Errorf("no logs for service '%s'", service)
+	}
+
+	if follow {
+		cmd := exec.Command("tail", "-f", logPath)
+		cmd.Stdout = os.Stdout
+		cmd.Stderr = os.Stderr
+		return cmd.Run()
+	}
+
+	if lines == 0 {
+		lines = 100
+	}
+	cmd := exec.Command("tail", "-n", fmt.Sprintf("%d", lines), logPath)
+	cmd.Stdout = os.Stdout
+	cmd.Stderr = os.Stderr
+	return cmd.Run()
+}
+
+func remoteLogs(host, service string, follow bool, lines int) error {
+	var journalCmd string
+
+	if service == "" {
+		// All micro services
+		journalCmd = "journalctl -u 'micro@*'"
+	} else {
+		journalCmd = fmt.Sprintf("journalctl -u 'micro@%s'", service)
+	}
+
+	if follow {
+		journalCmd += " -f"
+	} else {
+		if lines == 0 {
+			lines = 100
+		}
+		journalCmd += fmt.Sprintf(" -n %d", lines)
+	}
+
+	journalCmd += " --no-pager"
+
+	sshCmd := exec.Command("ssh", host, journalCmd)
+	sshCmd.Stdout = os.Stdout
+	sshCmd.Stderr = os.Stderr
+	return sshCmd.Run()
+}
+
+// Stop stops a running service
+func Stop(c *cli.Context) error {
+	if c.Args().Len() != 1 {
+		return fmt.Errorf("usage: micro stop <service>")
+	}
+
+	service := c.Args().First()
+	remoteHost := c.String("remote")
+
+	if remoteHost != "" {
+		return remoteStop(remoteHost, service)
+	}
+	return localStop(service)
+}
+
+func localStop(service string) error {
+	homeDir, err := os.UserHomeDir()
+	if err != nil {
+		return fmt.Errorf("failed to get home dir: %w", err)
+	}
+
+	runDir := filepath.Join(homeDir, "micro", "run")
+	pidFilePath := filepath.Join(runDir, service+".pid")
+
+	pidFile, err := os.Open(pidFilePath)
+	if err != nil {
+		return fmt.Errorf("service '%s' is not running", service)
+	}
+
+	var pid int
+	scanner := bufio.NewScanner(pidFile)
+	if scanner.Scan() {
+		_, _ = fmt.Sscanf(scanner.Text(), "%d", &pid)
+	}
+	pidFile.Close()
+
+	if pid <= 0 {
+		_ = os.Remove(pidFilePath)
+		return fmt.Errorf("service '%s' is not running", service)
+	}
+
+	proc, err := os.FindProcess(pid)
+	if err != nil {
+		_ = os.Remove(pidFilePath)
+		return fmt.Errorf("could not find process for '%s'", service)
+	}
+
+	if err := proc.Signal(syscall.SIGTERM); err != nil {
+		_ = os.Remove(pidFilePath)
+		return fmt.Errorf("failed to stop service '%s': %v", service, err)
+	}
+
+	_ = os.Remove(pidFilePath)
+	fmt.Printf("Stopped %s (pid %d)\n", service, pid)
+	return nil
+}
+
+func remoteStop(host, service string) error {
+	stopCmd := fmt.Sprintf("sudo systemctl stop micro@%s", service)
+	sshCmd := exec.Command("ssh", host, stopCmd)
+	if output, err := sshCmd.CombinedOutput(); err != nil {
+		return fmt.Errorf("failed to stop %s: %s", service, string(output))
+	}
+	fmt.Printf("Stopped %s on %s\n", service, host)
+	return nil
+}
+
+func init() {
+	cmd.Register(&cli.Command{
+		Name:  "status",
+		Usage: "Check status of running services",
+		Description: `Show status of running services.
+
+Local status:
+  micro status
+
+Remote status:
+  micro status --remote user@host`,
+		Action: Status,
+		Flags: []cli.Flag{
+			&cli.StringFlag{
+				Name:  "remote",
+				Usage: "Check status on remote server",
+			},
+		},
+	})
+
+	cmd.Register(&cli.Command{
+		Name:  "logs",
+		Usage: "Show logs for a service",
+		Description: `View service logs.
+
+Local logs:
+  micro logs              # list available logs
+  micro logs myservice    # show logs for myservice
+  micro logs myservice -f # follow logs
+
+Remote logs:
+  micro logs --remote user@host
+  micro logs myservice --remote user@host -f`,
+		Action: Logs,
+		Flags: []cli.Flag{
+			&cli.StringFlag{
+				Name:  "remote",
+				Usage: "View logs on remote server",
+			},
+			&cli.BoolFlag{
+				Name:    "follow",
+				Aliases: []string{"f"},
+				Usage:   "Follow log output",
+			},
+			&cli.IntFlag{
+				Name:    "lines",
+				Aliases: []string{"n"},
+				Usage:   "Number of lines to show (default: 100)",
+				Value:   100,
+			},
+		},
+	})
+
+	cmd.Register(&cli.Command{
+		Name:  "stop",
+		Usage: "Stop a running service",
+		Description: `Stop a running service.
+
+Local:
+  micro stop myservice
+
+Remote:
+  micro stop myservice --remote user@host`,
+		Action: Stop,
+		Flags: []cli.Flag{
+			&cli.StringFlag{
+				Name:  "remote",
+				Usage: "Stop service on remote server",
+			},
+		},
+	})
+}