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turboku.go
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turboku.go
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package cmd
import (
"fmt"
"io/ioutil"
"os"
"path/filepath"
"strings"
hero "github.com/heroku/heroku-go/v5"
"github.com/spf13/cobra"
"github.com/superfly/flyctl/api"
"github.com/superfly/flyctl/client"
"github.com/superfly/flyctl/cmdctx"
"github.com/superfly/flyctl/docstrings"
"github.com/superfly/flyctl/flyctl"
"github.com/superfly/flyctl/internal/heroku"
)
var errAppNameTaken = fmt.Errorf("app already exists")
func newTurbokuCommand(client *client.Client) *Command {
turbokuDocStrings := docstrings.Get("turboku")
cmd := BuildCommandKS(nil, runTurboku, turbokuDocStrings, client, requireSession)
cmd.Args = cobra.ExactArgs(1)
// heroku-token flag
cmd.AddStringFlag(StringFlagOpts{
Name: "heroku-token",
Description: "Heroku API token",
EnvName: "HEROKU_TOKEN",
})
cmd.AddBoolFlag(BoolFlagOpts{
Name: "now",
Description: "deploy now without confirmation",
Default: false,
})
cmd.AddStringFlag(StringFlagOpts{
Name: "org",
Description: `the organization that will own the app`,
})
cmd.AddStringFlag(StringFlagOpts{
Name: "name",
Description: "the name of the new app",
})
cmd.AddBoolFlag(BoolFlagOpts{
Name: "keep",
Description: "keep the app directory after deployment",
Default: false,
})
cmd.AddStringFlag(StringFlagOpts{
Name: "region",
Description: "the region to launch the new app in",
},
)
return cmd
}
// runTurboku fetches a heroku app and creates it on fly.io
func runTurboku(cmdCtx *cmdctx.CmdContext) error {
ctx := cmdCtx.Command.Context()
dir := cmdCtx.Config.GetString("path")
if absDir, err := filepath.Abs(dir); err == nil {
dir = absDir
}
cmdCtx.WorkingDir = dir
fly := cmdCtx.Client.API()
var herokuAppName string
// get heroku token
herokuToken := cmdCtx.Config.GetString("heroku-token")
if herokuToken == "" {
return fmt.Errorf("heroku-token is required")
}
appID := cmdCtx.Args[0]
herokuClient := heroku.New(herokuToken)
hkApp, err := herokuClient.AppInfo(ctx, appID)
if err != nil {
return err
}
// print the heroku app name we are using
fmt.Printf("Using heroku app: %s\n", hkApp.Name)
// Heroku regions are in Virigina (US) and Ireland (EU), so use the closest datacenters
var regionCode string
if code := cmdCtx.Config.GetString("region"); code != "" {
region, err := selectRegion(ctx, fly, code)
if err != nil {
return err
}
regionCode = region.Code
} else {
if hkApp.Region.Name == "us" {
regionCode = "iad"
} else {
regionCode = "lhr"
}
}
fmt.Printf("Selected fly region: %s\n", regionCode)
if len(cmdCtx.Args) > 0 {
herokuAppName = cmdCtx.Args[0]
}
var appName string
if appName = cmdCtx.Config.GetString("name"); appName == "" {
inputName, err := inputAppName(herokuAppName, false)
if err != nil {
return err
}
appName = inputName
}
orgSlug := cmdCtx.Config.GetString("org")
org, err := selectOrganization(ctx, fly, orgSlug)
if err != nil {
return err
}
input := api.CreateAppInput{
Name: appName,
OrganizationID: org.ID,
PreferredRegion: api.StringPointer(regionCode),
}
app, err := fly.CreateApp(ctx, input)
switch isTakenError(err) {
case nil:
fmt.Printf("New app created: %s\n", app.Name)
case errAppNameTaken:
fmt.Printf("App %s already exists\n", appName)
app, err = fly.GetApp(ctx, appName)
if err != nil {
return err
}
default:
return err
}
// retrieve heroku app ENV map[key]value and set it on fly.io as secrets
env, err := herokuClient.ConfigVarInfoForApp(ctx, appID)
if err != nil {
return err
}
if len(env) >= 1 {
// add the env map[key]value items to a secrets map[key]value
secrets := make(map[string]string)
for key, value := range env {
secrets[key] = *value
}
_, err = fly.SetSecrets(ctx, app.Name, secrets)
if err != nil {
if !strings.Contains(err.Error(), "No change") {
return err
}
}
if !app.Deployed {
cmdCtx.Statusf("secrets", cmdctx.SINFO, "Secrets are staged for the first deployment\n")
} else {
cmdCtx.Statusf("secrets", cmdctx.SINFO, "Secrets are deployed\n")
}
}
// get latest release
releases, err := herokuClient.ReleaseList(ctx, appID, &hero.ListRange{Field: "version", Descending: true, Max: 1})
if err != nil {
return err
}
if len(releases) == 0 {
fmt.Println("No releases found")
return nil
}
latestRelease := releases[0]
// get the latest release's slug
slug, err := herokuClient.SlugInfo(ctx, hkApp.ID, latestRelease.Slug.ID)
if err != nil {
return err
}
if err := os.MkdirAll(app.Name, 0o750); err != nil {
return err
}
// Generate an app config to write to fly.toml
appConfig := flyctl.NewAppConfig()
appConfig.Definition = app.Config.Definition
procfile := ""
// Add each process to a Procfile and fly.toml
for process, command := range slug.ProcessTypes {
if process == "release" {
appConfig.SetReleaseCommand(command)
} else if process != "console" && process != "rake" {
procfile += fmt.Sprintf("%s: %s\n", process, command)
// 'app' is the default process in our config
if process == "web" {
process = "app"
}
appConfig.SetProcess(process, command)
}
}
if err := ioutil.WriteFile(fmt.Sprintf("%s/Procfile", app.Name), []byte(procfile), 0o644); err != nil {
return err
}
fmt.Printf("Procfile created: %s/Procfile\n", app.Name)
if err := createDockerfile(app.Name, slug.Stack.Name, slug.Blob.URL); err != nil {
return err
}
fmt.Printf("Dockerfile created: %s/Dockerfile\n", app.Name)
cmdCtx.AppName = app.Name
appConfig.AppName = app.Name
cmdCtx.AppConfig = appConfig
// Write the app config
if err := writeAppConfig(filepath.Join(app.Name, "fly.toml"), appConfig); err != nil {
return err
}
if !cmdCtx.Config.GetBool("no-deploy") && (cmdCtx.Config.GetBool("now") || confirm("Would you like to deploy now?")) {
// change working directory(cmdCtx.WorkingDir) to the app directory
cmdCtx.WorkingDir = filepath.Join(cmdCtx.WorkingDir, app.Name)
// runDeploy
if err := runDeploy(cmdCtx); err != nil {
return err
}
fmt.Printf("App deployed: %s\n", app.Name)
if !cmdCtx.Config.GetBool("keep") {
if err := os.RemoveAll(app.Name); err != nil {
return err
}
}
}
return nil
}
func createDockerfile(appName, baseImage, slugURL string) error {
baseImage = fmt.Sprintf("%s/%s", "heroku", strings.Replace(baseImage, "-", ":", 1))
entrypoint := `
for f in /app/.profile.d/*.sh; do . $f; done
eval "exec $@"
`
ioutil.WriteFile(fmt.Sprintf("%s/entrypoint.sh", appName), []byte(entrypoint), 0o6750)
dockerfileTemplate := `FROM %s
RUN useradd -m heroku
RUN mkdir /app
WORKDIR /app
ENV HOME /app
ENV PORT 8080
COPY Procfile /app
COPY entrypoint.sh /app
ENTRYPOINT ["/bin/bash", "/app/entrypoint.sh"]
RUN curl "%s" | tar xzf - --strip 2 -C /app`
dockerfile := fmt.Sprintf(dockerfileTemplate, baseImage, slugURL)
dockerfile += "\nRUN chown -R heroku:heroku /app\n"
dockerfile += "\nUSER heroku\n"
return ioutil.WriteFile(fmt.Sprintf("%s/Dockerfile", appName), []byte(dockerfile), 0o640)
}
func isTakenError(err error) error {
if err != nil && strings.Contains(err.Error(), "taken") {
return errAppNameTaken
}
return err
}