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sourceinfo.go
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sourceinfo.go
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package launch
import (
"context"
"fmt"
"regexp"
"strings"
"github.com/cavaliergopher/grab/v3"
"github.com/logrusorgru/aurora"
"github.com/superfly/flyctl/internal/appconfig"
"github.com/superfly/flyctl/internal/flag"
"github.com/superfly/flyctl/iostreams"
"github.com/superfly/flyctl/scanner"
)
func determineSourceInfo(ctx context.Context, appConfig *appconfig.Config, copyConfig bool, workingDir string) (*scanner.SourceInfo, *appconfig.Build, error) {
io := iostreams.FromContext(ctx)
build := &appconfig.Build{}
srcInfo := &scanner.SourceInfo{}
var err error
scannerConfig := &scanner.ScannerConfig{
ExistingPort: appConfig.InternalPort(),
Mode: "launch",
Colorize: io.ColorScheme(),
}
// 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 copyConfig && flag.GetBool(ctx, "now") {
scannerConfig.Mode = "clone"
}
if img := flag.GetString(ctx, "image"); img != "" {
fmt.Fprintln(io.Out, "Using image", img)
build.Image = img
return srcInfo, build, nil
}
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 nil, nil, err
}
dockerfile = resp.Filename
}
fmt.Fprintln(io.Out, "Using dockerfile", dockerfile)
build.Dockerfile = dockerfile
srcInfo, err = scanner.ScanDockerfile(dockerfile, scannerConfig)
if err != nil {
return nil, nil, err
}
return srcInfo, build, nil
}
if strategies := appConfig.BuildStrategies(); len(strategies) > 0 {
fmt.Fprintf(io.Out, "Using build strategies '%s'. Remove [build] from fly.toml to force a rescan\n", aurora.Yellow(strategies))
return srcInfo, appConfig.Build, nil
}
fmt.Fprintln(io.Out, "Scanning source code")
srcInfo, err = scanner.Scan(workingDir, scannerConfig)
if err != nil {
return nil, nil, err
}
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."))
return srcInfo, nil, err
}
appType := srcInfo.Family
if srcInfo.Version != "" {
appType = appType + " " + srcInfo.Version
}
fmt.Fprintf(io.Out, "Detected %s %s app\n", articleFor(srcInfo.Family), 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, " "))
}
build = &appconfig.Build{
Builder: srcInfo.Builder,
Buildpacks: srcInfo.Buildpacks,
}
}
return srcInfo, build, nil
}
func articleFor(w string) string {
var article string = "a"
if matched, _ := regexp.MatchString(`^[aeiou]`, strings.ToLower(w)); matched {
article += "n"
}
return article
}