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machine.go
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machine.go
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package cmd
import (
"context"
"encoding/json"
"fmt"
"net"
"os"
"os/user"
"path/filepath"
"strconv"
"strings"
"time"
"github.com/AlecAivazis/survey/v2"
surveyterminal "github.com/AlecAivazis/survey/v2/terminal"
"github.com/google/shlex"
"github.com/logrusorgru/aurora"
"github.com/nats-io/nats.go"
"github.com/olekukonko/tablewriter"
"github.com/pkg/errors"
"github.com/spf13/cobra"
"github.com/superfly/flyctl/api"
"github.com/superfly/flyctl/cmdctx"
"github.com/superfly/flyctl/docstrings"
"github.com/superfly/flyctl/flyctl"
"github.com/superfly/flyctl/internal/client"
"github.com/superfly/flyctl/internal/cmdutil"
"github.com/superfly/flyctl/internal/monitor"
"github.com/superfly/flyctl/pkg/agent"
"github.com/superfly/flyctl/terminal"
"gopkg.in/yaml.v2"
)
func newMachineCommand(client *client.Client) *Command {
keystrings := docstrings.Get("machine")
cmd := BuildCommandCobra(nil, nil, &cobra.Command{
Use: keystrings.Usage,
Short: keystrings.Short,
Long: keystrings.Long,
Aliases: []string{"machines", "m"},
}, client)
newMachineRunCommand(cmd, client)
newMachineListCommand(cmd, client)
newMachineStopCommand(cmd, client)
newMachineStartCommand(cmd, client)
newMachineKillCommand(cmd, client)
newMachineRemoveCommand(cmd, client)
return cmd
}
func newMachineListCommand(parent *Command, client *client.Client) {
keystrings := docstrings.Get("machine.list")
cmd := BuildCommandCobra(parent, runMachineList, &cobra.Command{
Use: keystrings.Usage,
Short: keystrings.Short,
Long: keystrings.Long,
Aliases: []string{"ls"},
}, client)
cmd.AddBoolFlag(BoolFlagOpts{
Name: "all",
Description: "Show machines in all states",
})
cmd.AddStringFlag(StringFlagOpts{
Name: "state",
Default: "started",
Description: "List machines in a specific state",
})
cmd.AddBoolFlag(BoolFlagOpts{
Name: "quiet",
Shorthand: "q",
Description: "Only list machine ids",
})
}
func runMachineList(cmdCtx *cmdctx.CmdContext) error {
state := cmdCtx.Config.GetString("state")
if cmdCtx.Config.GetBool("all") {
state = ""
}
machines, err := cmdCtx.Client.API().ListMachines(cmdCtx.AppName, state)
if err != nil {
return errors.Wrap(err, "could not get list of machines")
}
if cmdCtx.Config.GetBool("quiet") {
for _, machine := range machines {
fmt.Println(machine.ID)
}
return nil
}
data := [][]string{}
for _, machine := range machines {
row := []string{
machine.ID,
machine.Config["image"].(string),
machine.CreatedAt.String(),
machine.State,
machine.Region,
machine.Name,
}
if cmdCtx.AppName == "" {
row = append(row, machine.App.Name)
}
data = append(data, row)
}
table := tablewriter.NewWriter(os.Stdout)
headers := []string{"ID", "Image", "Created", "State", "Region", "Name"}
if cmdCtx.AppName == "" {
headers = append(headers, "App")
}
table.SetHeader(headers)
table.SetAutoWrapText(false)
table.SetAutoFormatHeaders(true)
table.SetHeaderAlignment(tablewriter.ALIGN_LEFT)
table.SetAlignment(tablewriter.ALIGN_LEFT)
table.SetCenterSeparator("")
table.SetColumnSeparator("")
table.SetRowSeparator("")
table.SetHeaderLine(false)
table.SetBorder(false)
table.SetTablePadding("\t") // pad with tabs
table.SetNoWhiteSpace(true)
table.AppendBulk(data) // Add Bulk Data
table.Render()
return nil
}
func newMachineStopCommand(parent *Command, client *client.Client) {
cmd := BuildCommandKS(parent, runMachineStop, docstrings.Get("machine.stop"), client, requireSession, optionalAppName)
cmd.AddStringFlag(StringFlagOpts{
Name: "signal",
Shorthand: "s",
Description: "Signal to stop the machine with (default: SIGINT)",
})
cmd.AddIntFlag(IntFlagOpts{
Name: "time",
Description: "Seconds to wait before killing the machine",
})
cmd.Args = cobra.MinimumNArgs(1)
}
func runMachineStop(cmdCtx *cmdctx.CmdContext) error {
for _, arg := range cmdCtx.Args {
input := api.StopMachineInput{
AppID: cmdCtx.AppName,
ID: arg,
Signal: cmdCtx.Config.GetString("signal"),
KillTimeoutSecs: cmdCtx.Config.GetInt("time"),
}
machine, err := cmdCtx.Client.API().StopMachine(input)
if err != nil {
return errors.Wrap(err, "could not stop machine")
}
fmt.Println(machine.ID)
}
return nil
}
func newMachineStartCommand(parent *Command, client *client.Client) {
cmd := BuildCommandKS(parent, runMachineStart, docstrings.Get("machine.start"), client, requireSession, optionalAppName)
cmd.Args = cobra.ExactArgs(1)
}
func runMachineStart(cmdCtx *cmdctx.CmdContext) error {
input := api.StartMachineInput{
AppID: cmdCtx.AppName,
ID: cmdCtx.Args[0],
}
machine, err := cmdCtx.Client.API().StartMachine(input)
if err != nil {
return errors.Wrap(err, "could not stop machine")
}
fmt.Println(machine.ID)
return nil
}
func newMachineKillCommand(parent *Command, client *client.Client) {
cmd := BuildCommandKS(parent, runMachineKill, docstrings.Get("machine.kill"), client, requireSession, optionalAppName)
cmd.Args = cobra.MinimumNArgs(1)
}
func runMachineKill(cmdCtx *cmdctx.CmdContext) error {
for _, arg := range cmdCtx.Args {
input := api.KillMachineInput{
AppID: cmdCtx.AppName,
ID: arg,
}
machine, err := cmdCtx.Client.API().KillMachine(input)
if err != nil {
return errors.Wrap(err, "could not stop machine")
}
fmt.Println(machine.ID)
}
return nil
}
func newMachineRemoveCommand(parent *Command, client *client.Client) {
keystrings := docstrings.Get("machine.remove")
cmd := BuildCommandCobra(parent, runMachineRemove, &cobra.Command{
Use: keystrings.Usage,
Short: keystrings.Short,
Long: keystrings.Long,
Aliases: []string{"rm"},
}, client)
cmd.AddBoolFlag(BoolFlagOpts{
Name: "force",
Shorthand: "f",
Description: "force kill machine if it's running",
})
cmd.Args = cobra.MinimumNArgs(1)
}
func runMachineRemove(cmdCtx *cmdctx.CmdContext) error {
for _, arg := range cmdCtx.Args {
input := api.RemoveMachineInput{
AppID: cmdCtx.AppName,
ID: arg,
Kill: cmdCtx.Config.GetBool("force"),
}
machine, err := cmdCtx.Client.API().RemoveMachine(input)
if err != nil {
return errors.Wrap(err, "could not stop machine")
}
fmt.Println(machine.ID)
}
return nil
}
func newMachineRunCommand(parent *Command, client *client.Client) {
cmd := BuildCommandKS(parent, runMachineRun, docstrings.Get("machine.run"), client, requireSession, optionalAppName)
cmd.AddStringFlag(StringFlagOpts{
Name: "id",
Description: "Machine ID, is previously known",
})
cmd.AddStringFlag(StringFlagOpts{
Name: "name",
Shorthand: "n",
Description: "Machine name, will be generated if missing",
})
cmd.AddStringFlag(StringFlagOpts{
Name: "org",
Description: `The organization that will own the app`,
})
cmd.AddStringFlag(StringFlagOpts{
Name: "region",
Shorthand: "r",
Description: "Region to deploy the machine to (see `flyctl platform regions`)",
})
cmd.AddStringSliceFlag(StringSliceFlagOpts{
Name: "port",
Shorthand: "p",
Description: "Exposed port mappings (format: edgePort[:machinePort]/[protocol[:handler]])",
})
cmd.AddStringFlag(StringFlagOpts{
Name: "size",
Shorthand: "s",
Description: "Size of the machine",
})
cmd.AddStringSliceFlag(StringSliceFlagOpts{
Name: "env",
Shorthand: "e",
Description: "Set of environment variables in the form of NAME=VALUE pairs. Can be specified multiple times.",
})
cmd.AddStringFlag(StringFlagOpts{
Name: "entrypoint",
Description: "ENTRYPOINT replacement",
})
cmd.AddBoolFlag(BoolFlagOpts{
Name: "detach",
Shorthand: "d",
Description: "Detach from the machine's logs",
})
cmd.Command.Args = cobra.MinimumNArgs(1)
}
func runMachineRun(cmdCtx *cmdctx.CmdContext) error {
if cmdCtx.AppName == "" {
confirm := false
prompt := &survey.Confirm{
Message: "Running a machine without specifying an app will create one for you, is this what you want?",
}
err := survey.AskOne(prompt, &confirm)
if err != nil {
if err == surveyterminal.InterruptErr {
return nil
}
return err
}
if !confirm {
return nil
}
}
if cmdCtx.MachineConfig == nil {
cmdCtx.MachineConfig = flyctl.NewMachineConfig()
}
if extraEnv := cmdCtx.Config.GetStringSlice("env"); len(extraEnv) > 0 {
parsedEnv, err := cmdutil.ParseKVStringsToMap(cmdCtx.Config.GetStringSlice("env"))
if err != nil {
return errors.Wrap(err, "invalid env")
}
cmdCtx.MachineConfig.SetEnvVariables(parsedEnv)
}
machineConf := cmdCtx.MachineConfig
machineConf.Config["image"] = cmdCtx.Args[0]
if size := cmdCtx.Config.GetString("size"); size != "" {
machineConf.Config["size"] = size
}
init := map[string]interface{}{}
if entrypoint := cmdCtx.Config.GetString("entrypoint"); entrypoint != "" {
splitted, err := shlex.Split(entrypoint)
if err != nil {
return errors.Wrap(err, "invalid entrypoint")
}
init["entrypoint"] = splitted
}
if cmd := cmdCtx.Args[1:]; len(cmd) > 0 {
init["cmd"] = cmd
}
machineConf.Config["init"] = init
svcs := make([]interface{}, len(cmdCtx.Config.GetStringSlice("port")))
for i, p := range cmdCtx.Config.GetStringSlice("port") {
proto := "tcp"
handlers := []string{}
splittedPortsProto := strings.Split(p, "/")
if len(splittedPortsProto) > 1 {
splittedProtoHandlers := strings.Split(splittedPortsProto[1], ":")
proto = splittedProtoHandlers[0]
handlers = append(handlers, splittedProtoHandlers[1:]...)
}
splittedPorts := strings.Split(splittedPortsProto[0], ":")
edgePort, err := strconv.Atoi(splittedPorts[0])
if err != nil {
return errors.Wrap(err, "invalid edge port")
}
machinePort := edgePort
if len(splittedPorts) > 1 {
machinePort, err = strconv.Atoi(splittedPorts[1])
if err != nil {
return errors.Wrap(err, "invalid machine (internal) port")
}
}
svcs[i] = map[string]interface{}{
"protocol": proto,
"internal_port": machinePort,
"ports": []map[string]interface{}{
{
"port": edgePort,
"handlers": handlers,
},
},
}
}
machineConf.Config["services"] = svcs
apiMachineConf := api.MachineConfig(machineConf.Config)
input := api.LaunchMachineInput{
AppID: cmdCtx.AppName,
ID: cmdCtx.Config.GetString("id"),
Name: cmdCtx.Config.GetString("name"),
OrgSlug: cmdCtx.Config.GetString("org"),
Region: cmdCtx.Config.GetString("region"),
Config: &apiMachineConf,
}
machine, app, err := cmdCtx.Client.API().LaunchMachine(input)
if err != nil {
return err
}
if cmdCtx.Config.GetBool("detach") {
fmt.Println(machine.ID)
return nil
}
apiClient := cmdCtx.Client.API()
dialer, err := func() (agent.Dialer, error) {
ctx := createCancellableContext()
agentclient, err := agent.Establish(ctx, apiClient)
if err != nil {
return nil, errors.Wrap(err, "error establishing agent")
}
dialer, err := agentclient.Dialer(ctx, &app.Organization)
if err != nil {
return nil, errors.Wrapf(err, "error establishing wireguard connection for %s organization", app.Organization.Slug)
}
tunnelCtx, cancel := context.WithTimeout(ctx, 4*time.Second)
defer cancel()
if err = agentclient.WaitForTunnel(tunnelCtx, &app.Organization); err != nil {
return nil, errors.Wrap(err, "unable to connect WireGuard tunnel")
}
return dialer, nil
}()
if err != nil {
terminal.Debugf("could not connect to wireguard tunnel, err: %v\n", err)
terminal.Debug("Falling back to log polling...")
err := monitor.WatchLogs(cmdCtx, cmdCtx.Out, monitor.LogOptions{
AppName: app.Name,
VMID: machine.ID,
})
return err
}
var flyConf flyConfig
usr, _ := user.Current()
flyConfFile, err := os.Open(filepath.Join(usr.HomeDir, ".fly", "config.yml"))
if err != nil {
return errors.Wrap(err, "could not read fly config yml")
}
if err := yaml.NewDecoder(flyConfFile).Decode(&flyConf); err != nil {
return errors.Wrap(err, "could not decode fly config yml")
}
state, ok := flyConf.WireGuardState[app.Organization.Slug]
if !ok {
return errors.New("could not find org in fly config")
}
peerIP := state.Peer.PeerIP
var natsIPBytes [16]byte
copy(natsIPBytes[0:], peerIP[0:6])
natsIPBytes[15] = 3
natsIP := net.IP(natsIPBytes[:])
ctx := createCancellableContext()
natsConn, err := nats.Connect(fmt.Sprintf("nats://[%s]:4223", natsIP.String()), nats.SetCustomDialer(&natsDialer{dialer, ctx}), nats.UserInfo(app.Organization.Slug, flyConf.AccessToken))
if err != nil {
return errors.Wrap(err, "could not connect to nats")
}
sub, err := natsConn.Subscribe(fmt.Sprintf("logs.%s.*.%s", app.Name, machine.ID), func(msg *nats.Msg) {
var log natsLog
if err := json.Unmarshal(msg.Data, &log); err != nil {
terminal.Error(errors.Wrap(err, "could not parse log"))
return
}
w := os.Stdout
fmt.Fprintf(w, "%s ", aurora.Faint(log.Timestamp))
fmt.Fprintf(w, "%s[%s]", log.Event.Provider, log.Fly.App.Instance)
fmt.Fprint(w, " ")
fmt.Fprintf(w, "%s ", aurora.Green(log.Fly.Region))
fmt.Fprintf(w, "[%s] ", aurora.Colorize(log.Log.Level, levelColor(log.Log.Level)))
_, _ = w.Write([]byte(log.Message))
fmt.Fprintln(w, "")
})
if err != nil {
return errors.Wrap(err, "could not sub to logs via nats")
}
defer sub.Unsubscribe()
<-ctx.Done()
return nil
}
func levelColor(level string) aurora.Color {
switch level {
case "debug":
return aurora.CyanFg
case "info":
return aurora.BlueFg
case "warn":
case "warning":
return aurora.YellowFg
}
return aurora.RedFg
}
type natsLog struct {
Event struct {
Provider string `json:"provider"`
} `json:"event"`
Fly struct {
App struct {
Instance string `json:"instance"`
Name string `json:"name"`
} `json:"app"`
Region string `json:"region"`
} `json:"fly"`
Host string `json:"host"`
Log struct {
Level string `json:"level"`
} `json:"log"`
Message string `json:"message"`
Timestamp string `json:"timestamp"`
}
type natsDialer struct {
agent.Dialer
ctx context.Context
}
func (d *natsDialer) Dial(network, address string) (net.Conn, error) {
return d.Dialer.DialContext(d.ctx, network, address)
}
type flyConfig struct {
AccessToken string `yaml:"access_token"`
WireGuardState map[string]wgState `yaml:"wire_guard_state"`
}
type wgState struct {
Peer wgPeer `yaml:"peer"`
}
type wgPeer struct {
PeerIP net.IP `yaml:"peerip"`
}