feat(deisctl): add trireme tool

Trireme is an experimental alternative to deisctl, used just for
development.

Author: technosophos

trireme/README.md

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+# Trireme: Development Control Program for Deis
+
+This is a stand-in project during development of Kubernetes/Deis. It may
+or may not eventually become deisctl v2. But for now, it's a tool for
+working with k8s.
+
+## Why the name "Trireme"?
+
+It's a joke. A really nerdy joke.
+
+"Trireme" is a Latin word (like Deis) that is a corruption of a Greek
+word. It refers to a ship that has three banks of oars. So...
+
+- "Kubernetes" is the Greek name for a ship's captain...
+- "Trireme" is the latin word for a Greek boat...
+- And just like Deis needs about three nodes, a trireme has three banks
+  of oars.
+
+I warned you... it's a really nerdy joke.

trireme/main.go

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+package main
+
+import (
+	"fmt"
+	"os"
+
+	"github.com/codegangsta/cli"
+)
+
+func main() {
+	app := cli.NewApp()
+	app.Name = "trireme"
+	app.Usage = "A control tool for Deis"
+	app.Commands = commands()
+	app.Run(os.Args)
+}
+
+func commands() []cli.Command {
+	return []cli.Command{
+		{
+			Name:  "install",
+			Usage: "Install platform components",
+			/*
+				Action: func(c *cli.Context) {
+					fmt.Println("I can only install Platform right now.")
+				},
+			*/
+			Subcommands: installCommands(),
+		},
+	}
+}
+
+func installCommands() []cli.Command {
+	parts := map[string]string{
+		// In alpha order, please.
+		"builder":    "the builder",
+		"controller": "the controller",
+		"database":   "the database",
+		"router":     "the router mesh",
+		"store":      "the store and all of its components",
+		// FIXME: Do the rest.
+	}
+
+	// This basically ensures that append() will not have to reallocate.
+	cmds := make([]cli.Command, 0, len(parts)+1)
+
+	for n, v := range parts {
+		cmds = append(cmds, cli.Command{
+			Name:   n,
+			Usage:  fmt.Sprintf("Install %s.", v),
+			Action: func(c *cli.Context) { installComponent(c, n) },
+		})
+	}
+	cmds = append(cmds, cli.Command{
+		Name:   "platform",
+		Usage:  "Install the entire platform",
+		Action: installPlatform,
+		Flags: []cli.Flag{
+			cli.StringFlag{
+				Name:   "units, u",
+				Value:  "units/",
+				Usage:  "The path to the Deis Kubernetes JSON unit files.",
+				EnvVar: "DEIS_K8S_UNITS",
+			},
+			cli.StringFlag{
+				Name:   "registry, r",
+				Usage:  "The URL to a Docker registry that holds Deis images images.",
+				EnvVar: "DEV_REGISTRY",
+			},
+		},
+	})
+
+	return cmds
+}
+
+func installPlatform(c *cli.Context) {
+	fmt.Println("Installing platform")
+}
+func installComponent(c *cli.Context, name string) {
+	fmt.Printf("Installing component '%s' is currently not supported.\n", name)
+	os.Exit(1)
+}