Add command to generate configmaps using environment variables (#24)

* generate configmap

* sorted

* fixes

* only yaml v3

* tudo v2

* Use yaml.v2 in some places to avoid unit tests breaking

* Implement unit test

cmd/generate.go

@@ -0,0 +1,51 @@
+package cmd
+
+import (
+	"fmt"
+
+	"github.com/BraspagDevelopers/bpdt/lib"
+	"github.com/spf13/cobra"
+)
+
+var generateCmd = &cobra.Command{
+	Use:     "generate",
+	Aliases: []string{"gen"},
+}
+
+var generateConfigMapCmd = &cobra.Command{
+	Use:   "configmap <name-on-manifest>",
+	Short: "Generate a ConfigMap manifest",
+	Args:  cobra.ExactArgs(1),
+	Run: func(cmd *cobra.Command, args []string) {
+		name := args[0]
+
+		fromEnv, err := cmd.Flags().GetBool("env")
+		handleError(err)
+
+		prefix, err := cmd.Flags().GetString("prefix")
+		handleError(err)
+
+		stripPrefix, err := cmd.Flags().GetBool("strip-prefix")
+		handleError(err)
+
+		configMap, err := lib.GenerateConfigMap(lib.GenerateConfigMapParams{
+			Name:            name,
+			FromEnvironment: fromEnv,
+			Prefix:          prefix,
+			StripPrefix:     stripPrefix,
+		})
+		handleError(err)
+
+		fmt.Println(configMap)
+	},
+}
+
+func init() {
+	rootCmd.AddCommand(generateCmd)
+	generateCmd.AddCommand(generateConfigMapCmd)
+
+	generateConfigMapCmd.Flags().Bool("env", false, "Load variables from environment")
+	generateConfigMapCmd.Flags().Bool("strip-prefix", false, "Strip the variable name prefix")
+
+	generateConfigMapCmd.Flags().String("prefix", "", "Filter the variables by this prefix")
+}

go.mod

@@ -4,6 +4,7 @@ go 1.14
 
 require (
 	github.com/beevik/etree v1.1.0
+	github.com/brianvoe/gofakeit/v6 v6.9.0
 	github.com/bxcodec/faker/v3 v3.6.0
 	github.com/dimchansky/utfbom v1.1.1
 	github.com/jeremywohl/flatten v1.0.1
@@ -12,6 +13,8 @@ require (
 	github.com/palantir/stacktrace v0.0.0-20161112013806-78658fd2d177
 	github.com/spf13/cobra v1.2.1
 	github.com/stretchr/testify v1.7.0
+	gopkg.in/yaml.v2 v2.4.0
 	gopkg.in/yaml.v3 v3.0.0-20210107192922-496545a6307b
+	gotest.tools v2.2.0+incompatible
 	muzzammil.xyz/jsonc v0.0.0-20201229145248-615b0916ca38
 )