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run.go
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run.go
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package cmd
import (
"flag"
"fmt"
"net"
"strconv"
"strings"
"github.com/fatih/color"
"github.com/sclevine/cflocal/local"
)
type Run struct {
UI UI
Stager Stager
Runner Runner
App App
FS FS
Help Help
Config Config
}
type runOptions struct {
name, appDir string
serviceApp, forwardApp string
ip string
port uint
}
func (r *Run) Match(args []string) bool {
return len(args) > 0 && args[0] == "run"
}
func (r *Run) Run(args []string) error {
options, err := r.options(args)
if err != nil {
r.Help.Short()
return err
}
absAppDir, appDirEmpty := "", false
if options.appDir != "" {
if absAppDir, err = r.FS.Abs(options.appDir); err != nil {
return err
}
if err := r.FS.MakeDirAll(absAppDir); err != nil {
return err
}
if appDirEmpty, err = r.FS.IsDirEmpty(absAppDir); err != nil {
return err
}
}
localYML, err := r.Config.Load()
if err != nil {
return err
}
droplet, dropletSize, err := r.FS.ReadFile(fmt.Sprintf("./%s.droplet", options.name))
if err != nil {
return err
}
defer droplet.Close()
launcher, err := r.Stager.Download("/tmp/lifecycle/launcher")
if err != nil {
return err
}
defer launcher.Close()
appConfig := getAppConfig(options.name, localYML)
remoteServices, forwardConfig, err := getRemoteServices(r.App, options.serviceApp, options.forwardApp)
if err != nil {
return err
}
if remoteServices != nil {
appConfig.Services = remoteServices
}
forwarder := local.Forwarder{Config: forwardConfig}
if forwarder.Config != nil {
if forwarder.SSHPass, err = r.Stager.Download("/usr/bin/sshpass"); err != nil {
return err
}
defer forwarder.SSHPass.Close()
}
r.UI.Output("Running %s on port %d...", options.name, options.port)
_, err = r.Runner.Run(&local.RunConfig{
Droplet: local.NewStream(droplet, dropletSize),
Launcher: launcher,
Forwarder: forwarder,
IP: options.ip,
Port: options.port,
AppDir: absAppDir,
AppDirEmpty: appDirEmpty,
AppConfig: appConfig,
}, color.GreenString)
return err
}
func (*Run) options(args []string) (*runOptions, error) {
options := &runOptions{}
defaultPort, err := freePort()
if err != nil {
return nil, err
}
return options, parseOptions(args, func(name string, set *flag.FlagSet) {
options.name = name
set.UintVar(&options.port, "p", defaultPort, "")
set.StringVar(&options.ip, "i", "127.0.0.1", "")
set.StringVar(&options.appDir, "d", "", "")
set.StringVar(&options.serviceApp, "s", "", "")
set.StringVar(&options.forwardApp, "f", "", "")
})
}
func freePort() (uint, error) {
listener, err := net.Listen("tcp", "127.0.0.1:0")
if err != nil {
return 0, err
}
defer listener.Close()
address := listener.Addr().String()
portStr := strings.SplitN(address, ":", 2)[1]
port, err := strconv.ParseUint(portStr, 10, 32)
if err != nil {
return 0, err
}
return uint(port), nil
}