fnctl: code cleanup (#281)

fnctl/build.go

@@ -2,7 +2,6 @@ package main
 
 import (
 	"fmt"
-	"io"
 	"os"
 
 	"github.com/urfave/cli"
@@ -28,18 +27,20 @@ func (b *buildcmd) scan(c *cli.Context) error {
 	return nil
 }
 
-func (b *buildcmd) walker(path string, info os.FileInfo, err error, w io.Writer) error {
-	walker(path, info, err, w, b.build)
+func (b *buildcmd) walker(path string, info os.FileInfo, err error) error {
+	walker(path, info, err, b.build)
 	return nil
 }
 
 // build will take the found valid function and build it
 func (b *buildcmd) build(path string) error {
 	fmt.Fprintln(b.verbwriter, "building", path)
+
 	ff, err := b.buildfunc(path)
 	if err != nil {
 		return err
 	}
+
 	fmt.Printf("Function %v built successfully.\n", ff.FullName())
 	return nil
 }

fnctl/bump.go

@@ -2,7 +2,6 @@ package main
 
 import (
 	"fmt"
-	"io"
 	"os"
 	"strings"
 
@@ -35,8 +34,8 @@ func (b *bumpcmd) scan(c *cli.Context) error {
 	return nil
 }
 
-func (b *bumpcmd) walker(path string, info os.FileInfo, err error, w io.Writer) error {
-	walker(path, info, err, w, b.bump)
+func (b *bumpcmd) walker(path string, info os.FileInfo, err error) error {
+	walker(path, info, err, b.bump)
 	return nil
 }
 
@@ -67,10 +66,10 @@ func (b *bumpcmd) bump(path string) error {
 
 	funcfile.Version = newver.String()
 
-	err = storefuncfile(path, funcfile)
-	if err != nil {
+	if err := storefuncfile(path, funcfile); err != nil {
 		return err
 	}
+
 	fmt.Println("Bumped to version", funcfile.Version)
 	return nil
 }
@@ -79,26 +78,6 @@ func cleanImageName(name string) string {
 	if i := strings.Index(name, ":"); i != -1 {
 		name = name[:i]
 	}
+
 	return name
 }
-func imageversion(image string) (name, ver string) {
-	tagpos := strings.Index(image, ":")
-	if tagpos == -1 {
-		return image, initialVersion
-	}
-
-	imgname, imgver := image[:tagpos], image[tagpos+1:]
-
-	s, err := storage.NewVersionStorage("local", imgver)
-	if err != nil {
-		return imgname, initialVersion
-	}
-
-	version := bumper.NewSemverBumper(s, "")
-	v, err := version.GetCurrentVersion()
-	if err != nil {
-		return imgname, initialVersion
-	}
-
-	return imgname, v.String()
-}

fnctl/bump_test.go

@@ -1,29 +0,0 @@
-package main
-
-import "testing"
-
-func TestImageversion(t *testing.T) {
-	type args struct {
-		image string
-	}
-	tests := []struct {
-		name     string
-		args     args
-		wantName string
-		wantVer  string
-	}{
-		{"tag absent", args{"owner/imagename"}, "owner/imagename", initialVersion},
-		{"non semver tag", args{"owner/imagename:tag"}, "owner/imagename", "0.0.1"},
-		{"semver tag (M.m.p)", args{"owner/imagename:0.0.1"}, "owner/imagename", "0.0.1"},
-		{"semver tag (vM.m.p)", args{"owner/imagename:v0.0.1"}, "owner/imagename", "0.0.1"},
-	}
-	for _, tt := range tests {
-		gotName, gotVer := imageversion(tt.args.image)
-		if gotName != tt.wantName {
-			t.Errorf("%q. imageversion() gotName = %v, want %v", tt.name, gotName, tt.wantName)
-		}
-		if gotVer != tt.wantVer {
-			t.Errorf("%q. imageversion() gotVer = %v, want %v", tt.name, gotVer, tt.wantVer)
-		}
-	}
-}

fnctl/common.go

@@ -10,7 +10,6 @@ import (
 	"os/exec"
 	"path/filepath"
 	"strings"
-	"text/tabwriter"
 	"text/template"
 	"time"
 
@@ -33,12 +32,9 @@ func isFuncfile(path string, info os.FileInfo) bool {
 	return false
 }
 
-func walker(path string, info os.FileInfo, err error, w io.Writer, f func(path string) error) {
-	fmt.Fprint(w, path, "\t")
+func walker(path string, info os.FileInfo, err error, f func(path string) error) {
 	if err := f(path); err != nil {
-		fmt.Fprintln(w, err)
-	} else {
-		// fmt.Fprintln(w, "done")
+		fmt.Fprintln(os.Stderr, path, err)
 	}
 }
 
@@ -78,7 +74,7 @@ func (c *commoncmd) flags() []cli.Flag {
 	}
 }
 
-func (c *commoncmd) scan(walker func(path string, info os.FileInfo, err error, w io.Writer) error) {
+func (c *commoncmd) scan(walker func(path string, info os.FileInfo, err error) error) {
 	c.verbwriter = ioutil.Discard
 	if c.verbose {
 		c.verbwriter = os.Stderr
@@ -86,11 +82,7 @@ func (c *commoncmd) scan(walker func(path string, info os.FileInfo, err error, w
 
 	var walked bool
 
-	w := tabwriter.NewWriter(os.Stdout, 0, 8, 1, ' ', 0)
-	// fmt.Fprint(w, "path", "\t", "result", "\n")
-
 	err := filepath.Walk(c.wd, func(path string, info os.FileInfo, err error) error {
-		// fmt.Println("walking", info.Name())
 		if !c.recursively && path != c.wd && info.IsDir() {
 			return filepath.SkipDir
 		}
@@ -103,7 +95,7 @@ func (c *commoncmd) scan(walker func(path string, info os.FileInfo, err error, w
 			return nil
 		}
 
-		e := walker(path, info, err, w)
+		e := walker(path, info, err)
 		now := time.Now()
 		os.Chtimes(path, now, now)
 		walked = true
@@ -117,8 +109,6 @@ func (c *commoncmd) scan(walker func(path string, info os.FileInfo, err error, w
 		fmt.Println("No function file found.")
 		return
 	}
-
-	w.Flush()
 }
 
 // Theory of operation: this takes an optimistic approach to detect whether a
@@ -146,6 +136,7 @@ func isstale(path string) bool {
 		}
 		return nil
 	})
+
 	return err != nil
 }
 

fnctl/init.go

@@ -98,6 +98,7 @@ func (a *initFnCmd) init(c *cli.Context) error {
 	if err := encodeFuncfileYAML("func.yaml", ff); err != nil {
 		return err
 	}
+
 	fmt.Println("func.yaml created.")
 	return nil
 }
@@ -149,6 +150,7 @@ func detectRuntime(path string) (runtime string, err error) {
 			return runtime, nil
 		}
 	}
+
 	return "", fmt.Errorf("no supported files found to guess runtime, please set runtime explicitly with --runtime flag")
 }
 
@@ -157,5 +159,6 @@ func detectEntrypoint(runtime string) (string, error) {
 	if err != nil {
 		return "", err
 	}
+
 	return helper.Entrypoint(), nil
 }

fnctl/lambda.go

@@ -12,8 +12,6 @@ import (
 	"path/filepath"
 	"strings"
 
-	yaml "gopkg.in/yaml.v2"
-
 	"github.com/aws/aws-sdk-go/aws"
 	"github.com/aws/aws-sdk-go/aws/credentials"
 	"github.com/aws/aws-sdk-go/aws/session"
@@ -21,6 +19,7 @@ import (
 	"github.com/docker/docker/pkg/jsonmessage"
 	lambdaImpl "github.com/iron-io/lambda/lambda"
 	"github.com/urfave/cli"
+	yaml "gopkg.in/yaml.v2"
 )
 
 func init() {

fnctl/publish.go

@@ -2,7 +2,6 @@ package main
 
 import (
 	"fmt"
-	"io"
 	"net/http"
 	"os"
 	"os/exec"
@@ -50,8 +49,8 @@ func (p *publishcmd) scan(c *cli.Context) error {
 	return nil
 }
 
-func (p *publishcmd) walker(path string, info os.FileInfo, err error, w io.Writer) error {
-	walker(path, info, err, w, p.publish)
+func (p *publishcmd) walker(path string, info os.FileInfo, err error) error {
+	walker(path, info, err, p.publish)
 	return nil
 }
 
@@ -75,15 +74,10 @@ func (p *publishcmd) publish(path string) error {
 		return err
 	}
 
-	if err := p.route(path, funcfile); err != nil {
-		return err
-	}
-
-	return nil
+	return p.route(path, funcfile)
 }
 
 func (p publishcmd) dockerpush(ff *funcfile) error {
-	fmt.Printf("Pushing function %v to Docker Hub.\n", ff.FullName())
 	cmd := exec.Command("docker", "push", ff.FullName())
 	cmd.Stderr = os.Stderr
 	cmd.Stdout = os.Stdout

fnctl/push.go

@@ -2,7 +2,6 @@ package main
 
 import (
 	"fmt"
-	"io"
 	"os"
 
 	functions "github.com/iron-io/functions_go"
@@ -35,8 +34,8 @@ func (p *pushcmd) scan(c *cli.Context) error {
 	return nil
 }
 
-func (p *pushcmd) walker(path string, info os.FileInfo, err error, w io.Writer) error {
-	walker(path, info, err, w, p.push)
+func (p *pushcmd) walker(path string, info os.FileInfo, err error) error {
+	walker(path, info, err, p.push)
 	return nil
 }
 
@@ -55,5 +54,7 @@ func (p *pushcmd) push(path string) error {
 	if err := p.dockerpush(funcfile); err != nil {
 		return err
 	}
+
+	fmt.Printf("Function %v pushed successfully to Docker Hub.\n", funcfile.FullName())
 	return nil
 }

fnctl/run.go

@@ -40,9 +40,8 @@ func (r *runCmd) run(c *cli.Context) error {
 		if err != nil {
 			if _, ok := err.(*notFoundError); ok {
 				return errors.New("error: image name is missing or no function file found")
-			} else {
-				return err
 			}
+			return err
 		}
 		image = ff.FullName()
 	}