instance: add 'console-url' sub-command

CHANGELOG.md

@@ -6,6 +6,10 @@
 
 - Allow downscaling InstancePool and NodePool to 0
 
+### Features
+
+- instance: expose a new `console-url` sub-command with a direct link to the VM console on the portal
+
 ## 1.90.1
 
 ### Bug fixes

cmd/compute/instance/instance_console_url.go

@@ -0,0 +1,101 @@
+package instance
+
+import (
+	"fmt"
+	"net/url"
+	"strings"
+
+	"github.com/spf13/cobra"
+
+	exocmd "github.com/exoscale/cli/cmd"
+	"github.com/exoscale/cli/pkg/globalstate"
+	"github.com/exoscale/cli/pkg/output"
+	v3 "github.com/exoscale/egoscale/v3"
+)
+
+type InstanceConsoleURLOutput struct {
+	ConsoleURL string `json:"console-url"`
+}
+
+func (o *InstanceConsoleURLOutput) Type() string { return "Compute instance" }
+func (o *InstanceConsoleURLOutput) ToJSON()      { output.JSON(o) }
+func (o *InstanceConsoleURLOutput) ToText()      { output.Text(o) }
+func (o *InstanceConsoleURLOutput) ToTable()     { output.Table(o) }
+
+type instanceConsoleURLCmd struct {
+	exocmd.CliCommandSettings `cli-cmd:"-"`
+
+	_ bool `cli-cmd:"console-url"`
+
+	Instance string `cli-arg:"#" cli-usage:"NAME|ID"`
+
+	Zone v3.ZoneName `cli-short:"z" cli-usage:"instance zone"`
+}
+
+func (c *instanceConsoleURLCmd) CmdAliases() []string { return nil }
+
+func (c *instanceConsoleURLCmd) CmdShort() string { return "Get instance console URL" }
+
+func (c *instanceConsoleURLCmd) CmdLong() string {
+	return fmt.Sprintf(`This command generates a Compute instance console URL.
+
+Supported output template annotations: %s`,
+		strings.Join(output.TemplateAnnotations(&InstanceConsoleURLOutput{}), ", "))
+}
+
+func (c *instanceConsoleURLCmd) CmdPreRun(cmd *cobra.Command, args []string) error {
+	exocmd.CmdSetZoneFlagFromDefault(cmd)
+	return exocmd.CliCommandDefaultPreRun(c, cmd, args)
+}
+
+func (c *instanceConsoleURLCmd) CmdRun(cmd *cobra.Command, _ []string) error {
+	ctx := exocmd.GContext
+	client, err := exocmd.SwitchClientZoneV3(ctx, globalstate.EgoscaleV3Client, c.Zone)
+	if err != nil {
+		return err
+	}
+
+	resp, err := client.ListInstances(ctx)
+	if err != nil {
+		return err
+	}
+
+	foundInstance, err := resp.FindListInstancesResponseInstances(c.Instance)
+	if err != nil {
+		return err
+	}
+
+	consoleProxyURL, err := client.GetConsoleProxyURL(ctx, foundInstance.ID)
+
+	if err != nil {
+		return err
+	}
+
+	prefix, _, found := strings.Cut(consoleProxyURL.Host, "console-")
+	if !found {
+		prefix = ""
+	}
+
+	u := &url.URL{
+		Scheme: "https",
+		Host:   prefix + "portal.exoscale.com",
+		Path:   "vnc",
+	}
+
+	q := u.Query()
+	q.Set("host", consoleProxyURL.Host)
+	q.Set("path", consoleProxyURL.Path)
+	u.RawQuery = q.Encode()
+
+	out := InstanceConsoleURLOutput{
+		ConsoleURL: u.String(),
+	}
+
+	return c.OutputFunc(&out, nil)
+}
+
+func init() {
+	cobra.CheckErr(exocmd.RegisterCLICommand(instanceCmd, &instanceConsoleURLCmd{
+		CliCommandSettings: exocmd.DefaultCLICmdSettings(),
+	}))
+}