operator-sdk: add operator-sdk new command with descriptions

Gopkg.toml

@@ -0,0 +1,15 @@
+[[constraint]]
+  name = "github.com/sirupsen/logrus"
+  version = "1.0.4"
+
+[[constraint]]
+  name = "github.com/spf13/cobra"
+  version = "0.0.1"
+
+[[constraint]]
+  branch = "master"
+  name = "k8s.io/apimachinery"
+
+[[constraint]]
+  name = "k8s.io/client-go"
+  version = "6.0.0"

commands/operator-sdk/cmd/error.go

@@ -0,0 +1,17 @@
+package cmd
+
+import (
+	"fmt"
+	"os"
+)
+
+const (
+	// ExitBadArgs is the exit error code for bad arguments.
+	ExitBadArgs = 128
+)
+
+// ExitWithError prints out an error code and an error string to stderr.
+func ExitWithError(code int, err error) {
+	fmt.Fprintln(os.Stderr, "Error:", err)
+	os.Exit(code)
+}

commands/operator-sdk/cmd/new.go

@@ -0,0 +1,50 @@
+package cmd
+
+import (
+	"fmt"
+
+	"github.com/spf13/cobra"
+)
+
+// newCmd represents the new command
+var newCmd = &cobra.Command{
+	Use:   "new [options] <project-name>",
+	Short: "Creates a new operator application",
+	Long: `The operator-sdk new command creates a new operator application and 
+	generates a default directory layout based on the input <project-name>. 
+
+	If none of options are specified, the operator-sdk defaults 
+	Kubernetes api group to <project-name>.example.com/v1 
+	and Kubernetes resource kind to <project-name>Service.
+
+	For example,
+	$ mkdir $GOPATH/src/github.com/example.com/play
+	$ cd $GOPATH/src/github.com/example.com/play
+	$ operator-sdk new play
+	generates a skeletal play application in $GOPATH/src/github.com/example.com/play.
+`,
+	Run: newFunc,
+}
+
+var (
+	apiGroup string
+	kind     string
+)
+
+func init() {
+	RootCmd.AddCommand(newCmd)
+	newCmd.Flags().StringVar(&apiGroup, "api-group", "", "Kubernetes API Group. e.g play.example.com/v1")
+	newCmd.Flags().StringVar(&kind, "kind", "", "Kubernetes Resource Kind. e.g PlayService")
+}
+
+func newFunc(cmd *cobra.Command, args []string) {
+	if len(args) != 1 {
+		ExitWithError(ExitBadArgs, fmt.Errorf("new command needs 1 arguments."))
+	}
+	parse(args)
+	// TODO: add generation logic.
+}
+
+func parse(args []string) {
+	// TODO: parse args.
+}

commands/operator-sdk/cmd/root.go

@@ -0,0 +1,9 @@
+package cmd
+
+import "github.com/spf13/cobra"
+
+// This represents the base command when called without any subcommands
+var RootCmd = &cobra.Command{
+	Use:   "operator-sdk",
+	Short: "A sdk for building operator with ease",
+}

commands/operator-sdk/main.go

@@ -0,0 +1,15 @@
+package main
+
+import (
+	"fmt"
+	"os"
+
+	"github.com/coreos/operator-sdk/commands/operator-sdk/cmd"
+)
+
+func main() {
+	if err := cmd.RootCmd.Execute(); err != nil {
+		fmt.Fprintln(os.Stderr, err)
+		os.Exit(-1)
+	}
+}