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Copy pathrun.go
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193 lines (157 loc) · 4.31 KB
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package cmd
import (
"context"
goErrors "errors"
"fmt"
"net"
"os"
"os/exec"
"os/signal"
"regexp"
"syscall"
"github.com/railwayapp/cli/entity"
"github.com/railwayapp/cli/errors"
"github.com/railwayapp/cli/ui"
)
var RAIL_PORT = 4411
func (h *Handler) Run(ctx context.Context, req *entity.CommandRequest) error {
envs, err := h.ctrl.GetEnvs(ctx)
if err != nil {
return err
}
pwd, err := os.Getwd()
if err != nil {
return err
}
hasDockerfile := true
if _, err := os.Stat(fmt.Sprintf("%s/Dockerfile", pwd)); os.IsNotExist(err) {
hasDockerfile = false
}
if len(req.Args) == 0 && hasDockerfile {
return h.runInDocker(ctx, pwd, envs)
} else if len(req.Args) == 0 {
return errors.CommandNotSpecified
}
cmd := exec.Command(req.Args[0], req.Args[1:]...)
cmd.Env = os.Environ()
// Inject railway envs
for k, v := range *envs {
cmd.Env = append(cmd.Env, fmt.Sprintf("%s=%+v", k, v))
}
cmd.Stdout = os.Stdout
cmd.Stderr = os.Stdout
cmd.Stdin = os.Stdin
catchSignals(cmd)
err = cmd.Run()
if err != nil {
return err
}
printLooksGood()
return nil
}
func (h *Handler) runInDocker(ctx context.Context, pwd string, envs *entity.Envs) error {
// Start building the image
projectCfg, err := h.cfg.GetProjectConfigs()
if err != nil {
return err
}
project, err := h.ctrl.GetProject(ctx, projectCfg.Project)
if err != nil {
return err
}
// Strip characters not allowed in Docker image names
envName := getEnvironmentNameFromID(projectCfg.Environment, project.Environments)
sanitiser := regexp.MustCompile(`[^A-Za-z0-9_-]`)
imageNameWithoutNsOrTag := sanitiser.ReplaceAllString(project.Name, "") + "-" + sanitiser.ReplaceAllString(envName, "")
image := fmt.Sprintf("railway-local/%s:latest", imageNameWithoutNsOrTag)
buildArgs := []string{"build", "-q", "-t", image, pwd}
// Build up env
for k, v := range *envs {
buildArgs = append(buildArgs, "--build-arg", fmt.Sprintf("%s=\"%+v\"", k, v))
}
buildCmd := exec.Command("docker", buildArgs...)
ui.StartSpinner(&ui.SpinnerCfg{
Message: fmt.Sprintf("Building %s from Dockerfile... (this may take a bit)", ui.GreenText(image)),
Tokens: ui.TrainEmojis,
})
out, err := buildCmd.CombinedOutput()
if err != nil {
ui.StopSpinner("")
return showCmdError(buildCmd.Args, out, err)
}
ui.StopSpinner(fmt.Sprintf("🎉 Built %s", ui.GreenText(image)))
port, err := getAvailablePort()
if err != nil {
return err
}
// Start running the image
fmt.Printf("🚂 Running at %s\n\n", ui.GreenText(fmt.Sprintf("127.0.0.1:%d", port)))
runArgs := []string{"run", "--rm", "-p", fmt.Sprintf("127.0.0.1:%d:%d", port, port), "-e", fmt.Sprintf("PORT=%d", port)}
// Build up env
for k, v := range *envs {
runArgs = append(runArgs, "-e", fmt.Sprintf("%s=%+v", k, v))
}
runArgs = append(runArgs, image)
// Run the container
runCmd := exec.Command("docker", runArgs...)
runCmd.Stdout = os.Stdout
runCmd.Stderr = os.Stdout
runCmd.Stdin = os.Stdin
catchSignals(runCmd)
err = runCmd.Run()
if err != nil {
return err
}
printLooksGood()
return nil
}
func getAvailablePort() (int, error) {
searchRange := 64
for i := RAIL_PORT; i < RAIL_PORT+searchRange; i++ {
if isAvailable(i) {
return i, nil
}
}
return -1, goErrors.New(fmt.Sprintf("Couldn't find available port between %d and %d", RAIL_PORT, RAIL_PORT+searchRange))
}
func isAvailable(port int) bool {
ln, err := net.Listen("tcp", fmt.Sprintf(":%d", port))
if err != nil {
return false
}
_ = ln.Close()
return true
}
func showCmdError(args []string, output []byte, err error) error {
if _, ok := err.(*exec.ExitError); ok {
// Full cmd for error logging
argstr := ""
for _, arg := range args {
argstr += arg + " "
}
fmt.Println(ui.RedText("exec error:"))
fmt.Println(ui.RedText("-- START OUTPUT --"))
fmt.Printf("%s\n", string(output))
fmt.Println(ui.RedText("-- END OUTPUT --"))
fmt.Println()
fmt.Println(ui.RedText("while running:"))
fmt.Printf("%+v\n", argstr)
}
return err
}
func catchSignals(cmd *exec.Cmd) {
sigs := make(chan os.Signal, 1)
signal.Notify(sigs, syscall.SIGINT, syscall.SIGTERM)
go func() {
sig := <-sigs
cmd.Process.Signal(sig)
}()
}
func printLooksGood() {
// Get space between last output and this message
fmt.Println()
fmt.Printf(
"🚄 Looks good? Then put it on the train and deploy with `%s`!\n",
ui.GreenText("railway up"),
)
}