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launch.go
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launch.go
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package launch
import (
"context"
"fmt"
"path/filepath"
"regexp"
"strings"
"github.com/cavaliergopher/grab/v3"
"github.com/logrusorgru/aurora"
"github.com/spf13/cobra"
"github.com/superfly/flyctl/api"
"github.com/superfly/flyctl/client"
"github.com/superfly/flyctl/internal/appconfig"
"github.com/superfly/flyctl/internal/build/imgsrc"
"github.com/superfly/flyctl/internal/command"
"github.com/superfly/flyctl/internal/command/deploy"
"github.com/superfly/flyctl/internal/flag"
"github.com/superfly/flyctl/internal/prompt"
"github.com/superfly/flyctl/iostreams"
"github.com/superfly/flyctl/scanner"
"github.com/superfly/graphql"
)
func New() (cmd *cobra.Command) {
const (
long = `Create and configure a new app from source code or a Docker image.`
short = long
)
cmd = command.New("launch", short, long, run, command.RequireSession, command.LoadAppConfigIfPresent)
cmd.Args = cobra.NoArgs
flag.Add(cmd,
// Since launch can perform a deployment, we offer the full set of deployment flags for those using
// the launch command in CI environments. We may want to rescind this decision down the line, because
// the list of flags is long, but it follows from the precedent of already offering some deployment flags.
// See a proposed 'flag grouping' feature in Viper that could help with DX: https://github.com/spf13/cobra/pull/1778
deploy.CommonFlags,
flag.Org(),
flag.NoDeploy(),
flag.Bool{
Name: "generate-name",
Description: "Always generate a name for the app, without prompting",
},
flag.String{
Name: "path",
Description: `Path to the app source root, where fly.toml file will be saved`,
Default: ".",
},
flag.String{
Name: "name",
Description: `Name of the new app`,
},
flag.Bool{
Name: "copy-config",
Description: "Use the configuration file if present without prompting",
Default: false,
},
flag.Bool{
Name: "dockerignore-from-gitignore",
Description: "If a .dockerignore does not exist, create one from .gitignore files",
Default: false,
},
flag.Int{
Name: "internal-port",
Description: "Set internal_port for all services in the generated fly.toml",
Default: -1,
},
)
return
}
func run(ctx context.Context) (err error) {
io := iostreams.FromContext(ctx)
client := client.FromContext(ctx).API()
workingDir := flag.GetString(ctx, "path")
existingConfig := appconfig.ConfigFromContext(ctx)
generateName := flag.GetBool(ctx, "generate-name")
copyConfig := flag.GetBool(ctx, "copy-config")
name := strings.TrimSpace(flag.GetString(ctx, "name"))
appConfig := appconfig.NewConfig()
launchIntoExistingApp := false
deployArgs := deploy.DeployWithConfigArgs{
ForceNomad: flag.GetBool(ctx, "force-nomad"),
ForceMachines: flag.GetBool(ctx, "force-machines"),
ForceYes: flag.GetBool(ctx, "now"),
}
// Determine the working directory
if absDir, err := filepath.Abs(workingDir); err == nil {
workingDir = absDir
}
configFilePath := filepath.Join(workingDir, appconfig.DefaultConfigFileName)
if existingConfig != nil {
if existingConfig.AppName != "" {
fmt.Fprintln(io.Out, "An existing fly.toml file was found for app", existingConfig.AppName)
} else {
fmt.Fprintln(io.Out, "An existing fly.toml file was found")
}
if !copyConfig {
copy, err := prompt.Confirm(ctx, "Would you like to copy its configuration to the new app?")
if err != nil {
return err
}
copyConfig = copy
}
if copyConfig {
appConfig = existingConfig
}
}
fmt.Fprintln(io.Out, "Creating app in", workingDir)
srcInfo := new(scanner.SourceInfo)
config := &scanner.ScannerConfig{
ExistingPort: appConfig.InternalPort(),
}
// Detect if --copy-config and --now flags are set. If so, limited set of
// fly.toml file updates. Helpful for deploying PRs when the project is
// already setup and we only need fly.toml config changes.
if flag.GetBool(ctx, "copy-config") && flag.GetBool(ctx, "now") {
config.Mode = "clone"
} else {
config.Mode = "launch"
}
if img := flag.GetString(ctx, "image"); img != "" {
fmt.Fprintln(io.Out, "Using image", img)
appConfig.Build = &appconfig.Build{
Image: img,
}
} else if dockerfile := flag.GetString(ctx, "dockerfile"); dockerfile != "" {
if strings.HasPrefix(dockerfile, "http://") || strings.HasPrefix(dockerfile, "https://") {
fmt.Fprintln(io.Out, "Downloading dockerfile", dockerfile)
resp, err := grab.Get("Dockerfile", dockerfile)
if err != nil {
return err
} else {
appConfig.Build = &appconfig.Build{
Dockerfile: resp.Filename,
}
// scan Dockerfile for port
if si, err := scanner.Scan(workingDir, config); err != nil {
return err
} else {
srcInfo = si
}
}
} else {
fmt.Fprintln(io.Out, "Using dockerfile", dockerfile)
appConfig.Build = &appconfig.Build{
Dockerfile: dockerfile,
}
}
} else {
fmt.Fprintln(io.Out, "Scanning source code")
if si, err := scanner.Scan(workingDir, config); err != nil {
return err
} else {
srcInfo = si
}
if srcInfo == nil {
fmt.Fprintln(io.Out, aurora.Green("Could not find a Dockerfile, nor detect a runtime or framework from source code. Continuing with a blank app."))
} else {
var article string = "a"
if matched, _ := regexp.MatchString(`^[aeiou]`, strings.ToLower(srcInfo.Family)); matched {
article += "n"
}
appType := srcInfo.Family
if srcInfo.Version != "" {
appType = appType + " " + srcInfo.Version
}
fmt.Fprintf(io.Out, "Detected %s %s app\n", article, aurora.Green(appType))
if srcInfo.Builder != "" {
fmt.Fprintln(io.Out, "Using the following build configuration:")
fmt.Fprintln(io.Out, "\tBuilder:", srcInfo.Builder)
if srcInfo.Buildpacks != nil && len(srcInfo.Buildpacks) > 0 {
fmt.Fprintln(io.Out, "\tBuildpacks:", strings.Join(srcInfo.Buildpacks, " "))
}
appConfig.Build = &appconfig.Build{
Builder: srcInfo.Builder,
Buildpacks: srcInfo.Buildpacks,
}
}
}
}
if generateName {
appConfig.AppName = ""
}
if name != "" {
appConfig.AppName = name
}
if !generateName && name == "" {
inputName, err := promptForAppName(ctx, appConfig)
if err != nil {
return err
}
appConfig.AppName = inputName
}
var org *api.Organization
if appConfig.AppName != "" {
exists, app, err := appExists(ctx, appConfig)
if err != nil {
return err
}
if exists {
msg := fmt.Sprintf("App %s already exists, do you want to launch into that app?", appConfig.AppName)
launchIntoExistingApp, err = prompt.Confirm(ctx, msg)
if err != nil {
return err
}
if !launchIntoExistingApp {
return nil
}
org = &api.Organization{
ID: app.Organization.ID,
Name: app.Organization.Name,
Slug: app.Organization.Slug,
PaidPlan: app.Organization.PaidPlan,
}
}
}
if !launchIntoExistingApp {
// Prompt for an org
// TODO: determine if eager remote builder is still required here
org, err = prompt.Org(ctx)
if err != nil {
return
}
}
// If we potentially are deploying, launch a remote builder to prepare for deployment.
if !flag.GetBool(ctx, "no-deploy") {
go imgsrc.EagerlyEnsureRemoteBuilder(ctx, client, org.Slug)
}
region, err := prompt.Region(ctx, !org.PaidPlan, prompt.RegionParams{
Message: "Choose a region for deployment:",
})
if err != nil {
return err
}
appConfig.PrimaryRegion = region.Code
shouldUseMachines, err := shouldAppUseMachinesPlatform(ctx, org.Slug)
if err != nil {
return err
}
if shouldUseMachines && copyConfig {
// Check imported fly.toml is a valid V2 config before creating the app
if err := appConfig.SetMachinesPlatform(); err != nil {
return fmt.Errorf("Can not use configuration for Apps V2, check fly.toml: %w", err)
}
}
if !launchIntoExistingApp {
input := api.CreateAppInput{
Name: appConfig.AppName,
OrganizationID: org.ID,
PreferredRegion: &appConfig.PrimaryRegion,
Machines: shouldUseMachines,
}
createdApp, err := client.CreateApp(ctx, input)
if err != nil {
return err
}
if !copyConfig {
// Use the default configuration template suggested by Web
newCfg, err := appconfig.FromDefinition(&createdApp.Config.Definition)
if err != nil {
return fmt.Errorf("Launch failed to get new app configuration: %w", err)
}
newCfg.AppName = createdApp.Name
newCfg.Build = appConfig.Build
newCfg.PrimaryRegion = appConfig.PrimaryRegion
appConfig = newCfg
} else {
appConfig.AppName = createdApp.Name
}
fmt.Fprintf(io.Out, "Created app '%s' in organization '%s'\n", appConfig.AppName, org.Slug)
}
fmt.Fprintf(io.Out, "Admin URL: https://fly.io/apps/%s\n", appConfig.AppName)
fmt.Fprintf(io.Out, "Hostname: %s.fly.dev\n", appConfig.AppName)
// If files are requested by the launch scanner, create them.
if err := createSourceInfoFiles(ctx, srcInfo, workingDir); err != nil {
return err
}
// If secrets are requested by the launch scanner, ask the user to input them
if err := createSecrets(ctx, srcInfo, appConfig.AppName); err != nil {
return err
}
// If volumes are requested by the launch scanner, create them
if err := createVolumes(ctx, srcInfo, appConfig.AppName, region.Code); err != nil {
return err
}
// If database are requested by the launch scanner, create them
options, err := createDatabases(ctx, srcInfo, appConfig.AppName, region, org)
if err != nil {
return err
}
// Invoke Callback, if any
if err := runCallback(ctx, srcInfo, options); err != nil {
return err
}
// Run any initialization commands
if err := runInitCommands(ctx, srcInfo); err != nil {
return err
}
// Complete the appConfig
if err := setAppconfigFromSrcinfo(ctx, srcInfo, appConfig); err != nil {
return err
}
// Attempt to create a .dockerignore from .gitignore
determineDockerIgnore(ctx, workingDir)
// Override internal port if requested using --internal-port flag
if n := flag.GetInt(ctx, "internal-port"); n > 0 {
appConfig.SetInternalPort(n)
}
// remove auto-rollback from machine fly.tomls
if shouldUseMachines {
appConfig.Experimental = nil
}
// Finally write application configuration to fly.toml
if err := appConfig.WriteToDisk(ctx, configFilePath); err != nil {
return err
}
if srcInfo == nil {
return nil
}
ctx = appconfig.WithName(ctx, appConfig.AppName)
ctx = appconfig.WithConfig(ctx, appConfig)
// Notices from a launcher about its behavior that should always be displayed
if srcInfo.Notice != "" {
fmt.Fprintln(io.Out, srcInfo.Notice)
}
deployNow := false
promptForDeploy := true
if srcInfo.SkipDeploy || flag.GetBool(ctx, "no-deploy") {
deployNow = false
promptForDeploy = false
}
if flag.GetBool(ctx, "now") {
deployNow = true
promptForDeploy = false
}
if promptForDeploy {
confirm, err := prompt.Confirm(ctx, "Would you like to deploy now?")
if confirm && err == nil {
deployNow = true
}
}
if deployNow {
return deploy.DeployWithConfig(ctx, appConfig, deployArgs)
}
// Alternative deploy documentation if our standard deploy method is not correct
if srcInfo.DeployDocs != "" {
fmt.Fprintln(io.Out, srcInfo.DeployDocs)
} else {
fmt.Fprintln(io.Out, "Your app is ready! Deploy with `flyctl deploy`")
}
return nil
}
func shouldAppUseMachinesPlatform(ctx context.Context, orgSlug string) (bool, error) {
apiClient := client.FromContext(ctx).API()
if flag.GetBool(ctx, "force-machines") {
return true, nil
} else if flag.GetBool(ctx, "force-nomad") {
return false, nil
}
orgDefault, err := apiClient.GetAppsV2DefaultOnForOrg(ctx, orgSlug)
if err != nil {
return false, err
}
return orgDefault, nil
}
func appExists(ctx context.Context, cfg *appconfig.Config) (bool, *api.AppBasic, error) {
client := client.FromContext(ctx).API()
app, err := client.GetAppBasic(ctx, cfg.AppName)
if err != nil {
if api.IsNotFoundError(err) || graphql.IsNotFoundError(err) {
return false, nil, nil
}
return false, nil, err
}
return true, app, nil
}
func promptForAppName(ctx context.Context, cfg *appconfig.Config) (name string, err error) {
if cfg.AppName == "" {
return prompt.SelectAppName(ctx)
}
msg := fmt.Sprintf("Choose an app name (leaving blank will default to '%s')", cfg.AppName)
name, err = prompt.SelectAppNameWithMsg(ctx, msg)
if err != nil {
return name, err
}
// default to cfg.name if user doesn't enter any name after copying the configuration
if name == "" {
name = cfg.AppName
}
return
}