FEATURE: add printer

add printer for dockerfile, config, and env

allows easy export to a dockerfile workspace

Author: featheredtoast

main.go

@@ -19,6 +19,7 @@ type Cli struct {
 	TemplatesDir  string           `default:"." help:"Home project directory containing a templates/ directory which in turn contains pups yaml templates." predictor:"dir"`
 	DockerCompose DockerComposeCmd `cmd:"" name:"compose" help:"Create docker compose setup in the output {output-directory}/{config}/. The builder generates a docker-compose.yaml, Dockerfile, config.yaml, and an env file for you to source .envrc. Run with 'source .envrc; docker compose up'."`
 	ConcourseJob  ConcourseJobCmd  `cmd:"" name:"concourse-job" help:"Print concourse job config"`
+	Print         PrintCmd         `cmd:"" name:"print" help:"Print config"`
 
 	InstallCompletions kongplete.InstallCompletions `cmd:"" aliases:"sh" help:"Print shell autocompletions. Add output to dotfiles, or 'source <(./launcher-extras sh)'."`
 }

printer.go

@@ -0,0 +1,48 @@
+package main
+
+import (
+	"bytes"
+	"fmt"
+	"slices"
+
+	"github.com/discourse/launcher/v2/config"
+	"github.com/discourse/launcher/v2/utils"
+
+	"gopkg.in/yaml.v3"
+)
+
+type PrintCmd struct {
+	Type   string `arg:"" enum:"dockerfile,config,env" help:"print parts of a config"`
+	Config string `arg:"" name:"config" help:"config" predictor:"config"`
+}
+
+func (r *PrintCmd) Run(cli *Cli) error {
+	loadedConfig, err := config.LoadConfig(cli.ConfDir, r.Config, true, cli.TemplatesDir)
+	if err != nil {
+		return err
+	}
+	switch r.Type {
+	case "dockerfile":
+		pupsArgs := "--skip-tags=precompile,migrate,db"
+		fmt.Println(loadedConfig.Dockerfile(pupsArgs, "config.yaml"))
+	case "env":
+		env := map[string]string{}
+		for k, v := range loadedConfig.Env {
+			if slices.Contains(utils.KnownSecrets, k) {
+				continue
+			}
+			env[k] = v
+		}
+		var b bytes.Buffer
+		encoder := yaml.NewEncoder(&b)
+		encoder.SetIndent(2)
+		if err := encoder.Encode(&env); err != nil {
+			return err
+		}
+		yaml := b.Bytes()
+		fmt.Println(string(yaml))
+	default:
+		fmt.Println(loadedConfig.Yaml())
+	}
+	return nil
+}