new version format and some cleanup

Makefile

@@ -47,13 +47,13 @@ test: build
 gomake-all: build
 	@GO15VENDOREXPERIMENT=1 go install github.com/minio/minio
 
-release: genversion
-	@echo "Installing minio for new version.go:"
+release: version
+	@echo "Installing minio (new version):"
 	@GO15VENDOREXPERIMENT=1 go install github.com/minio/minio
 
-genversion:
-	@echo "Generating new minio version.go"
-	@cd ./pkg/version; go run genversion.go; cd - 1>/dev/null
+version:
+	@echo "Generating new version.go"
+	@GO15VENDOREXPERIMENT=1 go run buildscripts/genversion.go
 
 pkg-remove:
 	@GO15VENDOREXPERIMENT=1 govendor remove $(PKG)

buildscripts/genversion.go

@@ -0,0 +1,77 @@
+// +build ignore
+
+/*
+ * Minio Cloud Storage, (C) 2015 Minio, Inc.
+ *
+ * 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 main
+
+import (
+	"fmt"
+	"net/http"
+	"os"
+	"strings"
+	"text/template"
+	"time"
+)
+
+var versionTemplate = `// --------  DO NOT EDIT --------
+// This file is autogenerated by genversion.go during the release process.
+
+package main
+
+const minioVersion = {{if .Version}}"{{.Version}}"{{else}}""{{end}}
+const minioReleaseTag = {{if .ReleaseTag}}"{{.ReleaseTag}}"{{else}}""{{end}}
+`
+
+// genVersion generates ‘version.go’.
+func genVersion(version string) {
+	t := template.Must(template.New("version").Parse(versionTemplate))
+	versionFile, err := os.OpenFile("version.go", os.O_WRONLY|os.O_CREATE|os.O_TRUNC, 0600)
+	if err != nil {
+		fmt.Println("genversion: Unable to generate ‘version.go’. Error: %s.", err)
+		os.Exit(1)
+	}
+	defer versionFile.Close()
+
+	err = t.Execute(versionFile, struct {
+		Version    string
+		ReleaseTag string
+	}{version, genReleaseTag(version)})
+
+	if err != nil {
+		fmt.Println("genversion: Unable to generate ‘version.go’. Error: %s.", err)
+		os.Exit(1)
+	}
+}
+
+// genReleaseTag prints release tag to the console for easy git tagging.
+func genReleaseTag(version string) string {
+	relTag := strings.Replace(version, " ", "-", -1)
+	relTag = strings.Replace(relTag, ":", "-", -1)
+	relTag = strings.Replace(relTag, ",", "", -1)
+	return "RELEASE." + relTag
+}
+
+func main() {
+	// Version is in HTTP TimeFormat.
+	version := time.Now().UTC().Format(http.TimeFormat)
+
+	// generate ‘version.go’ file.
+	genVersion(version)
+
+	fmt.Println("Version: \"" + version + "\"")
+	fmt.Println("Release-Tag: " + genReleaseTag(version))
+}

main.go

@@ -18,33 +18,29 @@ package main
 
 import (
 	"fmt"
-	"net/http"
 	"os"
 	"os/user"
 	"runtime"
 	"strconv"
-	"time"
 
 	"github.com/dustin/go-humanize"
 	"github.com/minio/cli"
-	"github.com/minio/minio/pkg/version"
 )
 
 func init() {
 	// Check for the environment early on and gracefuly report.
-	u, err := user.Current()
+
+	_, err := user.Current()
 	if err != nil {
 		Fatalf("Unable to obtain user's home directory. \nError: %s\n", err)
 	}
-	var uid int
-	uid, err = strconv.Atoi(u.Uid)
-	if err != nil {
-		Fatalf("Unable to convert user id to an integer. \nError: %s\n", err)
-	}
-	if uid == 0 {
-		Fatalln("Please run as a normal user, running as root is disallowed")
+
+	if os.Geteuid() == 0 {
+		Fatalln("Please run ‘minio’ as a non-root user.")
 	}
-	verifyMinioRuntime()
+
+	// Check if minio was compiled using a supported version of Golang.
+	checkGolangRuntimeVersion()
 }
 
 // Tries to get os/arch/platform specific information
@@ -73,21 +69,6 @@ func getSystemData() map[string]string {
 	}
 }
 
-func init() {
-	if _, err := user.Current(); err != nil {
-		Fatalf("Unable to determine current user. Reason: %s\n", err)
-	}
-}
-
-// getFormattedVersion -
-func getFormattedVersion() string {
-	t, _ := time.Parse(time.RFC3339Nano, version.Version)
-	if t.IsZero() {
-		return ""
-	}
-	return t.Format(http.TimeFormat)
-}
-
 func findClosestCommands(command string) []string {
 	var closestCommands []string
 	for _, value := range commandsTree.PrefixMatch(command) {
@@ -134,14 +115,14 @@ GLOBAL FLAGS:
   {{range .Flags}}{{.}}
   {{end}}{{end}}
 VERSION:
-  ` + getFormattedVersion() +
+  ` + minioVersion +
 		`{{range $key, $value := ExtraInfo}}
 {{$key}}:
   {{$value}}
 {{end}}
 `
 	app.CommandNotFound = func(ctx *cli.Context, command string) {
-		msg := fmt.Sprintf("‘%s’ is not a mc command. See ‘minio help’.", command)
+		msg := fmt.Sprintf("‘%s’ is not a minio sub-command. See ‘minio help’.", command)
 		closestCommands := findClosestCommands(command)
 		if len(closestCommands) > 0 {
 			msg += fmt.Sprintf("\n\nDid you mean one of these?\n")

pkg/server/api/headers.go

@@ -22,11 +22,9 @@ import (
 	"encoding/json"
 	"encoding/xml"
 	"net/http"
-	"runtime"
 	"strconv"
 
 	"github.com/minio/minio/pkg/donut"
-	"github.com/minio/minio/pkg/version"
 )
 
 // No encoder interface exists, so we create one.
@@ -53,7 +51,10 @@ func generateRequestID() []byte {
 func setCommonHeaders(w http.ResponseWriter, acceptsType string, contentLength int) {
 	// set unique request ID for each reply
 	w.Header().Set("X-Amz-Request-Id", string(generateRequestID()))
-	w.Header().Set("Server", ("Minio/" + version.Version + " (" + runtime.GOOS + ";" + runtime.GOARCH + ")"))
+
+	// TODO: Modularity comes in the way of passing global state like "version". A better approach needed here. -ab
+	// w.Header().Set("Server", ("Minio/" + version + " (" + runtime.GOOS + ";" + runtime.GOARCH + ")"))
+
 	w.Header().Set("Accept-Ranges", "bytes")
 	w.Header().Set("Content-Type", acceptsType)
 	w.Header().Set("Connection", "close")

pkg/version/genversion.go

@@ -1,85 +0,0 @@
-// +build ignore
-
-/*
- * Minio Cloud Storage, (C) 2015 Minio, Inc.
- *
- * 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 main
-
-import (
-	"fmt"
-	"net/http"
-	"os"
-	"text/template"
-	"time"
-)
-
-// Version version string
-type Version struct {
-	Date string
-}
-
-func writeVersion(version Version) error {
-	var versionTemplate = `// --------  DO NOT EDIT --------
-// This file is autogenerated by genversion.go during the release process.
-
-package version
-
-// Version autogenerated
-const Version = {{if .Date}}"{{.Date}}"{{else}}""{{end}}
-`
-	t := template.Must(template.New("version").Parse(versionTemplate))
-	versionFile, err := os.OpenFile("version.go", os.O_WRONLY|os.O_CREATE|os.O_TRUNC, 0600)
-	if err != nil {
-		return err
-	}
-	defer versionFile.Close()
-	err = t.Execute(versionFile, version)
-	if err != nil {
-		return err
-	}
-	return nil
-}
-
-func genVersion() {
-	t := time.Now().UTC()
-	date := t.Format(time.RFC3339Nano)
-	// Tag is of following format
-	//
-	//   RELEASE.[WeekDay]-[Month]-[Day]-[Hour]-[Min]-[Sec]-GMT-[Year]
-	//
-	tag := fmt.Sprintf(
-		"RELEASE.%s-%s-%02d-%02d-%02d-%02d-GMT-%d",
-		t.Weekday().String()[0:3],
-		t.Month().String()[0:3],
-		t.Day(),
-		t.Hour(),
-		t.Minute(),
-		t.Second(),
-		t.Year())
-	fmt.Println("Release-Tag: " + tag)
-	fmt.Println("Release-Version: " + t.Format(http.TimeFormat))
-	version := Version{Date: date}
-	err := writeVersion(version)
-	if err != nil {
-		fmt.Print(err)
-		os.Exit(1)
-	}
-	fmt.Println("Successfully generated ‘version.go’")
-}
-
-func main() {
-	genVersion()
-}

pkg/version/version.go

@@ -1,7 +0,0 @@
-// --------  DO NOT EDIT --------
-// This file is autogenerated by genversion.go during the release process.
-
-package version
-
-// Version autogenerated
-const Version = "2015-08-14T03:23:47.250240049Z"

verify-runtime.go

@@ -93,8 +93,3 @@ func checkGolangRuntimeVersion() {
 		Errorln("Old Golang runtime version ‘" + v1.String() + "’ detected., ‘mc’ requires minimum go1.5.1 or later.")
 	}
 }
-
-func verifyMinioRuntime() {
-	// add any other checks here.
-	checkGolangRuntimeVersion()
-}

version-main.go

@@ -16,13 +16,7 @@
 
 package main
 
-import (
-	"net/http"
-	"time"
-
-	"github.com/minio/cli"
-	"github.com/minio/minio/pkg/version"
-)
+import "github.com/minio/cli"
 
 var versionCmd = cli.Command{
 	Name:   "version",
@@ -40,10 +34,6 @@ EXAMPLES:
 }
 
 func mainVersion(ctxx *cli.Context) {
-	t, _ := time.Parse(time.RFC3339Nano, version.Version)
-	if t.IsZero() {
-		Println("")
-		return
-	}
-	Println(t.Format(http.TimeFormat))
+	Println("Version: " + minioVersion)
+	Println("Release-Tag: " + minioReleaseTag)
 }

version.go

@@ -0,0 +1,7 @@
+// --------  DO NOT EDIT --------
+// This file is autogenerated by genversion.go during the release process.
+
+package main
+
+const minioVersion = "Sat, 19 Sep 2015 06:15:16 GMT"
+const minioReleaseTag = "RELEASE.Sat-19-Sep-2015-06-15-16-GMT"

version_test.go

@@ -14,14 +14,13 @@
  * limitations under the License.
  */
 
-package version_test
+package main
 
 import (
+	"net/http"
 	"testing"
 	"time"
 
-	"github.com/minio/minio/pkg/version"
-
 	. "gopkg.in/check.v1"
 )
 
@@ -32,6 +31,6 @@ type MySuite struct{}
 var _ = Suite(&MySuite{})
 
 func (s *MySuite) TestVersion(c *C) {
-	_, err := time.Parse(version.Version, time.RFC3339Nano)
+	_, err := time.Parse(minioVersion, http.TimeFormat)
 	c.Assert(err, NotNil)
 }