fnctl: env var expansion for app/route configuration (#249)

* fnctl: env var expansion for app/route configuration

* fnctl: env var expansion for app configuration

* fnctl: code grooming

fnctl/apps.go

@@ -4,7 +4,6 @@ import (
 	"errors"
 	"fmt"
 	"os"
-	"strings"
 	"text/tabwriter"
 
 	"github.com/iron-io/functions_go"
@@ -76,15 +75,9 @@ func (a *appsCmd) create(c *cli.Context) error {
 		return fmt.Errorf("error setting endpoint: %v", err)
 	}
 
-	appName := c.Args().Get(0)
-	configs := make(map[string]string)
-	for _, v := range c.StringSlice("config") {
-		kv := strings.SplitN(v, "=", 2)
-		configs[kv[0]] = kv[1]
-	}
 	body := functions.AppWrapper{App: functions.App{
-		Name:   appName,
-		Config: configs,
+		Name:   c.Args().Get(0),
+		Config: extractEnvConfig(c.StringSlice("config")),
 	}}
 	wrapper, _, err := a.AppsPost(body)
 	if err != nil {

fnctl/common.go

@@ -9,6 +9,7 @@ import (
 	"os"
 	"os/exec"
 	"path/filepath"
+	"strings"
 	"text/tabwriter"
 	"time"
 
@@ -253,3 +254,12 @@ func (c commoncmd) dockerbuild(path, image string) error {
 
 	return nil
 }
+
+func extractEnvConfig(configs []string) map[string]string {
+	c := make(map[string]string)
+	for _, v := range configs {
+		kv := strings.SplitN(v, "=", 2)
+		c[kv[0]] = os.ExpandEnv(kv[1])
+	}
+	return c
+}

fnctl/publish.go

@@ -112,7 +112,7 @@ func (p *publishcmd) route(path string, ff *funcfile) error {
 			Image:  ff.Image,
 			Memory: ff.Memory,
 			Type_:  ff.Type,
-			Config: ff.Config,
+			Config: expandEnvConfig(ff.Config),
 		},
 	}
 
@@ -129,6 +129,13 @@ func (p *publishcmd) route(path string, ff *funcfile) error {
 	return nil
 }
 
+func expandEnvConfig(configs map[string]string) map[string]string {
+	for k, v := range configs {
+		configs[k] = os.ExpandEnv(v)
+	}
+	return configs
+}
+
 func extractAppNameRoute(path string) (appName, route string) {
 
 	// The idea here is to extract the root-most directory name

fnctl/routes.go

@@ -194,14 +194,10 @@ func (a *routesCmd) create(c *cli.Context) error {
 			Image:   image,
 			Memory:  c.Int64("memory"),
 			Type_:   c.String("type"),
+			Config:  extractEnvConfig(c.StringSlice("config")),
 		},
 	}
-	configs := make(map[string]string)
-	for _, v := range c.StringSlice("config") {
-		kv := strings.SplitN(v, "=", 2)
-		configs[kv[0]] = kv[1]
-	}
-	body.Route.Config = configs
+
 	wrapper, _, err := a.AppsAppRoutesPost(appName, body)
 	if err != nil {
 		return fmt.Errorf("error creating route: %v", err)