// RunPort is the handler for 'scw port'
func RunPort(ctx CommandContext, args PortArgs) error {
serverID := ctx.API.GetServerID(args.Server)
server, err := ctx.API.GetServer(serverID)
if err != nil {
return fmt.Errorf("failed to get server information for %s: %v", serverID, err)
}
// Resolve gateway
if args.Gateway == "" {
args.Gateway = ctx.Getenv("SCW_GATEWAY")
}
var gateway string
if args.Gateway == serverID || args.Gateway == args.Server {
gateway = ""
} else {
gateway, err = api.ResolveGateway(ctx.API, args.Gateway)
if err != nil {
return fmt.Errorf("cannot resolve Gateway '%s': %v", args.Gateway, err)
}
}
command := []string{"netstat -lutn 2>/dev/null | grep LISTEN"}
err = utils.SSHExec(server.PublicAddress.IP, server.PrivateIP, command, true, gateway)
if err != nil {
return fmt.Errorf("command execution failed: %v", err)
}
return nil
}
// RunLogs is the handler for 'scw logs'
func RunLogs(ctx CommandContext, args LogsArgs) error {
serverID, err := ctx.API.GetServerID(args.Server)
if err != nil {
return err
}
server, err := ctx.API.GetServer(serverID)
if err != nil {
return fmt.Errorf("failed to get server information for %s: %v", serverID, err)
}
// FIXME: switch to serial history when API is ready
// Resolve gateway
if args.Gateway == "" {
args.Gateway = ctx.Getenv("SCW_GATEWAY")
}
var gateway string
if args.Gateway == serverID || args.Gateway == args.Server {
gateway = ""
} else {
gateway, err = api.ResolveGateway(ctx.API, args.Gateway)
if err != nil {
return fmt.Errorf("cannot resolve Gateway '%s': %v", args.Gateway, err)
}
}
command := []string{"dmesg"}
err = utils.SSHExec(server.PublicAddress.IP, server.PrivateIP, args.SSHUser, args.SSHPort, command, true, gateway)
if err != nil {
return fmt.Errorf("command execution failed: %v", err)
}
return nil
}
func runShowBoot(ctx CommandContext, args RunArgs, serverID string, closeTimeout chan struct{}, timeoutExit chan struct{}) error {
// Attach to server serial
logrus.Info("Attaching to server console ...")
gottycli, done, err := utils.AttachToSerial(serverID, ctx.API.Token)
if err != nil {
close(closeTimeout)
return fmt.Errorf("cannot attach to server serial: %v", err)
}
utils.Quiet(true)
notif, gateway, err := waitSSHConnection(ctx, args, serverID)
if err != nil {
close(closeTimeout)
gottycli.ExitLoop()
<-done
return err
}
select {
case <-timeoutExit:
gottycli.ExitLoop()
<-done
utils.Quiet(false)
return fmt.Errorf("Operation timed out")
case sshConnection := <-notif:
close(closeTimeout)
gottycli.ExitLoop()
<-done
utils.Quiet(false)
if sshConnection.err != nil {
return sshConnection.err
}
if fingerprints := ctx.API.GetSSHFingerprintFromServer(serverID); len(fingerprints) > 0 {
for i := range fingerprints {
fmt.Fprintf(ctx.Stdout, "%s\n", fingerprints[i])
}
}
server := sshConnection.server
logrus.Info("Connecting to server ...")
if err = utils.SSHExec(server.PublicAddress.IP, server.PrivateIP, []string{}, false, gateway); err != nil {
return fmt.Errorf("Connection to server failed: %v", err)
}
}
return nil
}
// Run is the handler for 'scw run'
func Run(ctx CommandContext, args RunArgs) error {
if args.Gateway == "" {
args.Gateway = ctx.Getenv("SCW_GATEWAY")
}
if args.TmpSSHKey {
err := AddSSHKeyToTags(ctx, &args.Tags, args.Image)
if err != nil {
return err
}
}
env := strings.Join(args.Tags, " ")
volume := strings.Join(args.Volumes, " ")
// create IMAGE
logrus.Info("Server creation ...")
serverID, err := api.CreateServer(ctx.API, &api.ConfigCreateServer{
ImageName: args.Image,
Name: args.Name,
Bootscript: args.Bootscript,
Env: env,
AdditionalVolumes: volume,
DynamicIPRequired: args.Gateway == "",
IP: args.IP,
})
if err != nil {
return fmt.Errorf("failed to create server: %v", err)
}
logrus.Infof("Server created: %s", serverID)
if args.AutoRemove {
defer ctx.API.DeleteServerSafe(serverID)
}
// start SERVER
logrus.Info("Server start requested ...")
if err = api.StartServer(ctx.API, serverID, false); err != nil {
return fmt.Errorf("failed to start server %s: %v", serverID, err)
}
logrus.Info("Server is starting, this may take up to a minute ...")
if args.Userdata != "" {
addUserData(ctx, strings.Split(args.Userdata, " "), serverID)
}
// Sync cache on disk
ctx.API.Sync()
if args.Detach {
fmt.Fprintln(ctx.Stdout, serverID)
return nil
}
closeTimeout := make(chan struct{})
timeoutExit := make(chan struct{})
if args.Timeout > 0 {
go func() {
select {
case <-time.After(time.Duration(args.Timeout) * time.Second):
close(timeoutExit)
case <-closeTimeout:
break
}
}()
}
if args.ShowBoot {
return runShowBoot(ctx, args, serverID, closeTimeout, timeoutExit)
} else if args.Attach {
// Attach to server serial
logrus.Info("Attaching to server console ...")
gottycli, done, err := utils.AttachToSerial(serverID, ctx.API.Token)
close(closeTimeout)
if err != nil {
return fmt.Errorf("cannot attach to server serial: %v", err)
}
<-done
gottycli.Close()
} else {
notif, gateway, err := waitSSHConnection(ctx, args, serverID)
if err != nil {
close(closeTimeout)
return err
}
select {
case <-timeoutExit:
return fmt.Errorf("Operation timed out")
case sshConnection := <-notif:
close(closeTimeout)
if sshConnection.err != nil {
return sshConnection.err
}
if fingerprints := ctx.API.GetSSHFingerprintFromServer(serverID); len(fingerprints) > 0 {
for i := range fingerprints {
fmt.Fprintf(ctx.Stdout, "%s\n", fingerprints[i])
}
}
server := sshConnection.server
// exec -w SERVER COMMAND ARGS...
if len(args.Command) < 1 {
logrus.Info("Connecting to server ...")
if err = utils.SSHExec(server.PublicAddress.IP, server.PrivateIP, []string{}, false, gateway); err != nil {
return fmt.Errorf("Connection to server failed: %v", err)
}
} else {
logrus.Infof("Executing command: %s ...", args.Command)
if err = utils.SSHExec(server.PublicAddress.IP, server.PrivateIP, args.Command, false, gateway); err != nil {
return fmt.Errorf("command execution failed: %v", err)
}
logrus.Info("Command successfuly executed")
}
}
}
return nil
}
// WaitForServerReady wait for a server state to be running, then wait for the SSH port to be available
func WaitForServerReady(api *ScalewayAPI, serverID, gateway string) (*ScalewayServer, error) {
promise := make(chan bool)
var server *ScalewayServer
var err error
var currentState string
go func() {
defer close(promise)
for {
server, err = api.GetServer(serverID)
if err != nil {
promise <- false
return
}
if currentState != server.State {
log.Infof("Server changed state to '%s'", server.State)
currentState = server.State
}
if server.State == "running" {
break
}
if server.State == "stopped" {
err = fmt.Errorf("The server has been stopped")
promise <- false
return
}
time.Sleep(1 * time.Second)
}
if gateway == "" {
dest := fmt.Sprintf("%s:22", server.PublicAddress.IP)
log.Debugf("Waiting for server SSH port %s", dest)
err = utils.WaitForTCPPortOpen(dest)
if err != nil {
promise <- false
return
}
} else {
dest := fmt.Sprintf("%s:22", gateway)
log.Debugf("Waiting for server SSH port %s", dest)
err = utils.WaitForTCPPortOpen(dest)
if err != nil {
promise <- false
return
}
timeout := time.Tick(120 * time.Second)
for {
select {
case <-timeout:
err = fmt.Errorf("Timeout: unable to ping %s", server.PrivateIP)
fmt.Println("timeout")
goto OUT
default:
if utils.SSHExec("", server.PrivateIP, "root", 22, []string{
"nc",
"-z",
"-w",
"1",
server.PrivateIP,
"22",
}, false, gateway) == nil {
goto OUT
}
}
}
OUT:
if err != nil {
promise <- false
return
}
log.Debugf("Check for SSH port through the gateway: %s", server.PrivateIP)
}
promise <- true
}()
loop := 0
for {
select {
case done := <-promise:
utils.LogQuiet("\r \r")
if !done {
return nil, err
}
return server, nil
case <-time.After(time.Millisecond * 100):
utils.LogQuiet(fmt.Sprintf("\r%c\r", "-\\|/"[loop%4]))
loop = loop + 1
if loop == 5 {
loop = 0
}
}
}
}
// RunExec is the handler for 'scw exec'
func RunExec(ctx CommandContext, args ExecArgs) error {
var fingerprints []string
done := make(chan struct{})
serverID, err := ctx.API.GetServerID(args.Server)
if err != nil {
return err
}
go func() {
fingerprints = ctx.API.GetSSHFingerprintFromServer(serverID)
close(done)
}()
// Resolve gateway
if args.Gateway == "" {
args.Gateway = ctx.Getenv("SCW_GATEWAY")
}
var gateway string
if args.Gateway == serverID || args.Gateway == args.Server {
logrus.Debugf("The server and the gateway are the same host, using direct access to the server")
gateway = ""
} else {
gateway, err = api.ResolveGateway(ctx.API, args.Gateway)
if err != nil {
return fmt.Errorf("Cannot resolve Gateway '%s': %v", args.Gateway, err)
}
if gateway != "" {
logrus.Debugf("The server will be accessed using the gateway '%s' as a SSH relay", gateway)
}
}
var server *api.ScalewayServer
if args.Wait {
// --wait
logrus.Debugf("Waiting for server to be ready")
server, err = api.WaitForServerReady(ctx.API, serverID, gateway)
if err != nil {
return fmt.Errorf("Failed to wait for server to be ready, %v", err)
}
} else {
// no --wait
logrus.Debugf("scw won't wait for the server to be ready, if it is not, the command will fail")
server, err = ctx.API.GetServer(serverID)
if err != nil {
rerr := fmt.Errorf("Failed to get server information for %s: %v", serverID, err)
if err.Error() == `"`+serverID+`" not found` {
return fmt.Errorf("%v\nmaybe try to flush the cache with : scw _flush-cache", rerr)
}
return rerr
}
}
if server.PublicAddress.IP == "" && gateway == "" {
logrus.Warn(`Your host has no public IP address, you should use '--gateway', see 'scw help exec'`)
}
// --timeout
if args.Timeout > 0 {
logrus.Debugf("Setting up a global timeout of %d seconds", args.Timeout)
// FIXME: avoid use of log.Fatalf here
go func() {
time.Sleep(time.Duration(args.Timeout*1000) * time.Millisecond)
logrus.Fatalf("Operation timed out")
}()
}
<-done
if len(fingerprints) > 0 {
for i := range fingerprints {
fmt.Fprintf(ctx.Stdout, "%s\n", fingerprints[i])
}
}
logrus.Debugf("PublicDNS %s", serverID+api.URLPublicDNS)
logrus.Debugf("PrivateDNS %s", serverID+api.URLPrivateDNS)
if err = utils.SSHExec(server.PublicAddress.IP, server.PrivateIP, args.SSHUser, args.SSHPort, args.Command, !args.Wait, gateway); err != nil {
return fmt.Errorf("Failed to run the command: %v", err)
}
logrus.Debugf("Command successfully executed")
return nil
}
// Run is the handler for 'scw run'
func Run(ctx CommandContext, args RunArgs) error {
if args.Gateway == "" {
args.Gateway = ctx.Getenv("SCW_GATEWAY")
}
if args.TmpSSHKey {
err := AddSSHKeyToTags(ctx, &args.Tags, args.Image)
if err != nil {
return err
}
}
env := strings.Join(args.Tags, " ")
volume := strings.Join(args.Volumes, " ")
// create IMAGE
logrus.Info("Server creation ...")
dynamicIPRequired := args.Gateway == ""
serverID, err := api.CreateServer(ctx.API, args.Image, args.Name, args.Bootscript, env, volume, dynamicIPRequired)
if err != nil {
return fmt.Errorf("failed to create server: %v", err)
}
logrus.Infof("Server created: %s", serverID)
if args.AutoRemove {
defer ctx.API.DeleteServerSafe(serverID)
}
// start SERVER
logrus.Info("Server start requested ...")
err = api.StartServer(ctx.API, serverID, false)
if err != nil {
return fmt.Errorf("failed to start server %s: %v", serverID, err)
}
logrus.Info("Server is starting, this may take up to a minute ...")
if args.Detach {
fmt.Fprintln(ctx.Stdout, serverID)
return nil
} else {
// Sync cache on disk
ctx.API.Sync()
}
if args.Attach {
// Attach to server serial
logrus.Info("Attaching to server console ...")
err = utils.AttachToSerial(serverID, ctx.API.Token, true)
if err != nil {
return fmt.Errorf("cannot attach to server serial: %v", err)
}
} else {
// Resolve gateway
gateway, err := api.ResolveGateway(ctx.API, args.Gateway)
if err != nil {
return fmt.Errorf("cannot resolve Gateway '%s': %v", args.Gateway, err)
}
// waiting for server to be ready
logrus.Debug("Waiting for server to be ready")
// We wait for 30 seconds, which is the minimal amount of time needed by a server to boot
server, err := api.WaitForServerReady(ctx.API, serverID, gateway)
if err != nil {
return fmt.Errorf("cannot get access to server %s: %v", serverID, err)
}
logrus.Debugf("SSH server is available: %s:22", server.PublicAddress.IP)
logrus.Info("Server is ready !")
// exec -w SERVER COMMAND ARGS...
if len(args.Command) < 1 {
logrus.Info("Connecting to server ...")
err = utils.SSHExec(server.PublicAddress.IP, server.PrivateIP, []string{}, false, gateway)
} else {
logrus.Infof("Executing command: %s ...", args.Command)
err = utils.SSHExec(server.PublicAddress.IP, server.PrivateIP, args.Command, false, gateway)
}
if err != nil {
return fmt.Errorf("command execution failed: %v", err)
}
logrus.Info("Command successfuly executed")
}
return nil
}
