Merge pull request #235 from apelisse/kinflate-add-configmap

kinflate: Create AddConfigMap structure

cmd/kinflate/kinflate.go

@@ -29,6 +29,8 @@ func main() {
 	var cmd = &cobra.Command{}
 	cmd.AddCommand(commands.NewCmdInflate(os.Stdout, os.Stderr))
 	cmd.AddCommand(commands.NewCmdInit(os.Stdout, os.Stderr, fs.MakeRealFS()))
+	cmd.AddCommand(commands.NewCmdAddConfigMap(os.Stderr))
+
 	err := cmd.Execute()
 	if err != nil {
 		os.Exit(1)

pkg/kinflate/commands/configmap.go

@@ -0,0 +1,73 @@
+/*
+Copyright 2017 The Kubernetes Authors.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+package commands
+
+import (
+	"fmt"
+	"io"
+
+	"github.com/spf13/cobra"
+)
+
+type addConfigMap struct {
+	// Name of configMap (required)
+	Name string
+	// FileSources to derive the configMap from (optional)
+	FileSources []string
+	// LiteralSources to derive the configMap from (optional)
+	LiteralSources []string
+	// EnvFileSource to derive the configMap from (optional)
+	EnvFileSource string
+}
+
+// validate validates required fields are set to support structured generation.
+func (a *addConfigMap) Validate(args []string) error {
+	if len(args) != 1 {
+		return fmt.Errorf("name must be specified once")
+	}
+	a.Name = args[0]
+	if len(a.EnvFileSource) > 0 && (len(a.FileSources) > 0 || len(a.LiteralSources) > 0) {
+		return fmt.Errorf("from-env-file cannot be combined with from-file or from-literal")
+	}
+	return nil
+}
+
+func NewCmdAddConfigMap(errOut io.Writer) *cobra.Command {
+	var config addConfigMap
+	cmd := &cobra.Command{
+		Use:     "configmap NAME [--from-file=[key=]source] [--from-literal=key1=value1]",
+		Short:   "Adds a configmap to your manifest file.",
+		Long:    "",
+		Example: "",
+		RunE: func(_ *cobra.Command, args []string) error {
+			err := config.Validate(args)
+			if err != nil {
+				return err
+			}
+
+			// TODO(apelisse,droot): Do something with that config.
+
+			return nil
+		},
+	}
+
+	cmd.Flags().StringSliceVar(&config.FileSources, "from-file", []string{}, "Key file can be specified using its file path, in which case file basename will be used as configmap key, or optionally with a key and file path, in which case the given key will be used.  Specifying a directory will iterate each named file in the directory whose basename is a valid configmap key.")
+	cmd.Flags().StringArrayVar(&config.LiteralSources, "from-literal", []string{}, "Specify a key and literal value to insert in configmap (i.e. mykey=somevalue)")
+	cmd.Flags().StringVar(&config.EnvFileSource, "from-env-file", "", "Specify the path to a file to read lines of key=val pairs to create a configmap (i.e. a Docker .env file).")
+
+	return cmd
+}