Add mkdonut command

cmd/mkdonut/console.go

@@ -0,0 +1,171 @@
+/*
+ * Minimalist Object 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"
+	"os"
+	"sync"
+
+	"path/filepath"
+)
+
+type logLevel int
+
+const (
+	levelUnknown logLevel = iota
+	levelPrint
+	levelDebug
+	levelInfo
+	levelError
+	levelFatal
+)
+
+var (
+	mutex = &sync.RWMutex{}
+
+	// Fatal prints a error message and exits
+	Fatal = func(a ...interface{}) { privatePrint(levelFatal, a...) }
+	// Fatalln prints a error message with a new line and exits
+	Fatalln = func(a ...interface{}) { privatePrintln(levelFatal, a...) }
+	// Fatalf prints a error message with formatting and exits
+	Fatalf = func(f string, a ...interface{}) { privatePrintf(levelFatal, f, a...) }
+
+	// Error prints a error message
+	Error = func(a ...interface{}) { privatePrint(levelError, a...) }
+	// Errorln prints a error message with a new line
+	Errorln = func(a ...interface{}) { privatePrintln(levelError, a...) }
+	// Errorf prints a error message with formatting
+	Errorf = func(f string, a ...interface{}) { privatePrintf(levelError, f, a...) }
+
+	// Info prints a informational message
+	Info = func(a ...interface{}) { privatePrint(levelInfo, a...) }
+	// Infoln prints a informational message with a new line
+	Infoln = func(a ...interface{}) { privatePrintln(levelInfo, a...) }
+	// Infof prints a informational message with formatting
+	Infof = func(f string, a ...interface{}) { privatePrintf(levelInfo, f, a...) }
+
+	// Debug prints a debug message
+	Debug = func(a ...interface{}) { privatePrint(levelDebug, a...) }
+	// Debugln prints a debug message with a new line
+	Debugln = func(a ...interface{}) { privatePrintln(levelDebug, a...) }
+	// Debugf prints a debug message with formatting
+	Debugf = func(f string, a ...interface{}) { privatePrintf(levelDebug, f, a...) }
+
+	// Print prints a debug message
+	Print = func(a ...interface{}) { privatePrint(levelPrint, a...) }
+	// Println prints a debug message with a new line
+	Println = func(a ...interface{}) { privatePrintln(levelPrint, a...) }
+	// Printf prints a debug message with formatting
+	Printf = func(f string, a ...interface{}) { privatePrintf(levelPrint, f, a...) }
+)
+
+var (
+	// print prints a message prefixed with message type and program name
+	privatePrint = func(l logLevel, a ...interface{}) {
+		switch l {
+		case levelDebug:
+			mutex.Lock()
+			fmt.Fprint(os.Stderr, ProgramName()+": <DEBUG> ")
+			fmt.Fprint(os.Stderr, a...)
+			mutex.Unlock()
+		case levelInfo:
+			mutex.Lock()
+			fmt.Print(ProgramName() + ": <INFO> ")
+			fmt.Print(a...)
+			mutex.Unlock()
+		case levelError:
+			mutex.Lock()
+			fmt.Fprint(os.Stderr, ProgramName()+": <ERROR> ")
+			fmt.Fprint(os.Stderr, a...)
+			mutex.Unlock()
+		case levelFatal:
+			mutex.Lock()
+			fmt.Fprint(os.Stderr, ProgramName()+": <FATAL> ")
+			fmt.Fprint(os.Stderr, a...)
+			mutex.Unlock()
+			os.Exit(1)
+		default:
+			fmt.Print(a...)
+		}
+	}
+
+	// println - same as print with a new line
+	privatePrintln = func(l logLevel, a ...interface{}) {
+		switch l {
+		case levelDebug:
+			mutex.Lock()
+			fmt.Fprint(os.Stderr, ProgramName()+": <DEBUG> ")
+			fmt.Fprintln(os.Stderr, a...)
+			mutex.Unlock()
+		case levelInfo:
+			mutex.Lock()
+			fmt.Print(ProgramName() + ": <INFO> ")
+			fmt.Println(a...)
+			mutex.Unlock()
+		case levelError:
+			mutex.Lock()
+			fmt.Fprint(os.Stderr, ProgramName()+": <ERROR> ")
+			fmt.Fprintln(os.Stderr, a...)
+			mutex.Unlock()
+		case levelFatal:
+			mutex.Lock()
+			fmt.Fprint(os.Stderr, ProgramName()+": <FATAL> ")
+			fmt.Fprintln(os.Stderr, a...)
+			mutex.Unlock()
+			os.Exit(1)
+		default:
+			fmt.Print(a...)
+		}
+	}
+
+	// printf - same as print, but takes a format specifier
+	privatePrintf = func(l logLevel, f string, a ...interface{}) {
+		switch l {
+		case levelDebug:
+			mutex.Lock()
+			fmt.Fprint(os.Stderr, ProgramName()+": <DEBUG> ")
+			fmt.Fprintf(os.Stderr, f, a...)
+			mutex.Unlock()
+		case levelInfo:
+			mutex.Lock()
+			fmt.Print(ProgramName() + ": <INFO> ")
+			fmt.Printf(f, a...)
+			mutex.Unlock()
+		case levelError:
+			mutex.Lock()
+			fmt.Fprint(os.Stderr, ProgramName()+": <ERROR> ")
+			fmt.Fprintf(os.Stderr, f, a...)
+			mutex.Unlock()
+
+		case levelFatal:
+			mutex.Lock()
+			fmt.Fprint(os.Stderr, ProgramName()+": <FATAL> ")
+			fmt.Fprintf(os.Stderr, f, a...)
+			mutex.Unlock()
+			os.Exit(1)
+		default:
+			fmt.Printf(f, a...)
+		}
+	}
+)
+
+// ProgramName - return the name of the executable program
+func ProgramName() string {
+	_, progName := filepath.Split(os.Args[0])
+	return progName
+}

cmd/mkdonut/disks.go

@@ -0,0 +1,56 @@
+/*
+ * Minimalist Object 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 (
+	"errors"
+	"io/ioutil"
+	"os"
+	"path/filepath"
+	"syscall"
+
+	"github.com/minio/minio/pkg/iodine"
+)
+
+// IsUsable provides a comprehensive way of knowing if the provided mountPath is mounted and writable
+func IsUsable(mountPath string) (bool, error) {
+	mntpoint, err := os.Stat(mountPath)
+	if err != nil {
+		return false, iodine.New(err, nil)
+	}
+	parent, err := os.Stat(filepath.Join(mountPath, ".."))
+	if err != nil {
+		return false, iodine.New(err, nil)
+	}
+	mntpointSt := mntpoint.Sys().(*syscall.Stat_t)
+	parentSt := parent.Sys().(*syscall.Stat_t)
+
+	if mntpointSt.Dev == parentSt.Dev {
+		return false, iodine.New(errors.New("not mounted"), nil)
+	}
+	testFile, err := ioutil.TempFile(mountPath, "writetest-")
+	if err != nil {
+		return false, iodine.New(err, nil)
+	}
+	testFileName := testFile.Name()
+	// close the file, to avoid leaky fd's
+	testFile.Close()
+	if err := os.Remove(testFileName); err != nil {
+		return false, iodine.New(err, nil)
+	}
+	return true, nil
+}

cmd/mkdonut/main.go

@@ -0,0 +1,118 @@
+/*
+ * Minimalist Object 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"
+	"os"
+	"os/user"
+	"runtime"
+	"strconv"
+	"time"
+
+	"github.com/dustin/go-humanize"
+	"github.com/minio/cli"
+	"github.com/minio/minio/pkg/iodine"
+)
+
+var globalDebugFlag = false
+
+var flags = []cli.Flag{
+	cli.BoolFlag{
+		Name:  "debug",
+		Usage: "print debug information",
+	},
+}
+
+func init() {
+	// Check for the environment early on and gracefuly report.
+	_, err := user.Current()
+	if err != nil {
+		Fatalf("Unable to obtain user's home directory. \nError: %s\n", err)
+	}
+}
+
+// Tries to get os/arch/platform specific information
+// Returns a map of current os/arch/platform/memstats
+func getSystemData() map[string]string {
+	host, err := os.Hostname()
+	if err != nil {
+		host = ""
+	}
+	memstats := &runtime.MemStats{}
+	runtime.ReadMemStats(memstats)
+	mem := fmt.Sprintf("Used: %s | Allocated: %s | Used-Heap: %s | Allocated-Heap: %s",
+		humanize.Bytes(memstats.Alloc),
+		humanize.Bytes(memstats.TotalAlloc),
+		humanize.Bytes(memstats.HeapAlloc),
+		humanize.Bytes(memstats.HeapSys))
+	platform := fmt.Sprintf("Host: %s | OS: %s | Arch: %s",
+		host,
+		runtime.GOOS,
+		runtime.GOARCH)
+	goruntime := fmt.Sprintf("Version: %s | CPUs: %s", runtime.Version(), strconv.Itoa(runtime.NumCPU()))
+	return map[string]string{
+		"PLATFORM": platform,
+		"RUNTIME":  goruntime,
+		"MEM":      mem,
+	}
+}
+
+func main() {
+	// set up iodine
+	iodine.SetGlobalState("mkdonut.version", Version)
+	iodine.SetGlobalState("mkdonut.starttime", time.Now().Format(time.RFC3339))
+
+	// set up go max processes
+	runtime.GOMAXPROCS(runtime.NumCPU())
+
+	// set up app
+	app := cli.NewApp()
+	app.Name = "minio"
+	app.Version = Version
+	app.Compiled = getVersion()
+	app.Author = "Minio.io"
+	app.Usage = "Make a donut"
+	app.Flags = flags
+	app.Before = func(c *cli.Context) error {
+		if c.GlobalBool("debug") {
+			app.ExtraInfo = getSystemData()
+		}
+		return nil
+	}
+	app.CustomAppHelpTemplate = `NAME:
+  {{.Name}} - {{.Usage}}
+
+USAGE:
+  {{.Name}} {{if .Flags}}[global flags] {{end}}command{{if .Flags}} [command flags]{{end}} [arguments...]
+
+COMMANDS:
+  {{range .Commands}}{{join .Names ", "}}{{ "\t" }}{{.Usage}}
+  {{end}}{{if .Flags}}
+GLOBAL FLAGS:
+  {{range .Flags}}{{.}}
+  {{end}}{{end}}
+VERSION:
+  {{if .Compiled}}
+  {{.Compiled}}{{end}}
+  {{range $key, $value := .ExtraInfo}}
+{{$key}}:
+  {{$value}}
+{{end}}
+`
+	app.RunAndExitOnError()
+}

cmd/mkdonut/make.go

@@ -0,0 +1,130 @@
+// +build ignore
+
+/*
+ * Makefile alternative for Minimalist Object 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 (
+	"bytes"
+	"fmt"
+	"os"
+	"os/exec"
+	"text/template"
+	"time"
+
+	"github.com/minio/cli"
+)
+
+type Version struct {
+	Date string
+}
+
+func writeVersion(version Version) error {
+	var versionTemplate = `// --------  DO NOT EDIT --------
+// this is an autogenerated file
+
+package main
+
+import (
+	"net/http"
+	"time"
+)
+
+// Version autogenerated
+var Version = {{if .Date}}"{{.Date}}"{{else}}""{{end}}
+
+// getVersion -
+func getVersion() string {
+	t, _ := time.Parse(time.RFC3339Nano, Version)
+	if t.IsZero() {
+		return ""
+	}
+	return t.Format(http.TimeFormat)
+}
+`
+	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
+}
+
+type command struct {
+	cmd    *exec.Cmd
+	stderr *bytes.Buffer
+	stdout *bytes.Buffer
+}
+
+func (c command) runCommand() error {
+	c.cmd.Stdout = c.stdout
+	c.cmd.Stderr = c.stderr
+	return c.cmd.Run()
+}
+func (c command) String() string {
+	message := c.stderr.String()
+	message += c.stdout.String()
+	return message
+}
+
+func runMkdonutInstall(ctx *cli.Context) {
+	if ctx.Args().First() == "help" {
+		cli.ShowCommandHelpAndExit(ctx, "install", 1) // last argument is exit code
+	}
+	mkdonutInstall := command{exec.Command("godep", "go", "install", "-a", "github.com/minio/minio/cmd/mkdonut"), &bytes.Buffer{}, &bytes.Buffer{}}
+	mkdonutInstallErr := mkdonutInstall.runCommand()
+	if mkdonutInstallErr != nil {
+		fmt.Println(mkdonutInstall)
+		os.Exit(1)
+	}
+	fmt.Print(mkdonutInstall)
+}
+
+func runMkdonutRelease(ctx *cli.Context) {
+	if ctx.Args().First() == "help" {
+		cli.ShowCommandHelpAndExit(ctx, "release", 1) // last argument is exit code
+	}
+	t := time.Now().UTC()
+	date := t.Format(time.RFC3339Nano)
+	version := Version{Date: date}
+	err := writeVersion(version)
+	if err != nil {
+		fmt.Print(err)
+		os.Exit(1)
+	}
+}
+
+func main() {
+	app := cli.NewApp()
+	app.Commands = []cli.Command{
+		{
+			Name:   "release",
+			Action: runMkdonutRelease,
+		},
+		{
+			Name:   "install",
+			Action: runMkdonutInstall,
+		},
+	}
+	app.Author = "Minio.io"
+	app.RunAndExitOnError()
+}

cmd/mkdonut/version.go

@@ -0,0 +1,21 @@
+// --------  DO NOT EDIT --------
+// this is an autogenerated file
+
+package main
+
+import (
+	"net/http"
+	"time"
+)
+
+// Version autogenerated
+var Version = "2015-07-13T01:59:53.151205631Z"
+
+// getVersion -
+func getVersion() string {
+	t, _ := time.Parse(time.RFC3339Nano, Version)
+	if t.IsZero() {
+		return ""
+	}
+	return t.Format(http.TimeFormat)
+}

console.go

@@ -1,5 +1,5 @@
 /*
- * Mini Copy (C) 2015 Minio, Inc.
+ * Minimalist Object 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.

make.go

@@ -1,7 +1,7 @@
 // +build ignore
 
 /*
- * Minio Client (C) 2014, 2015 Minio, Inc.
+ * Makefile alternative for Minimalist Object 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.
@@ -23,7 +23,6 @@ import (
 	"fmt"
 	"os"
 	"os/exec"
-	"strconv"
 	"text/template"
 	"time"
 
@@ -49,14 +48,6 @@ import (
 // Version autogenerated
 var Version = {{if .Date}}"{{.Date}}"{{else}}""{{end}}
 
-// Tag is of following format
-//
-//   [[STRING]-[EPOCH]
-//
-// STRING is release string of your choice.
-// EPOCH is unix seconds since Jan 1, 1970 UTC.
-var Tag = {{if .Tag}}"{{.Tag}}"{{else}}""{{end}}
-
 // getVersion -
 func getVersion() string {
 	t, _ := time.Parse(time.RFC3339Nano, Version)
@@ -109,7 +100,7 @@ func runMinioInstall(ctx *cli.Context) {
 		fmt.Print(minioGenerate)
 		os.Exit(1)
 	}
-	fmt.Println(minioGenerate)
+	fmt.Print(minioGenerate)
 	minioBuildErr := minioBuild.runCommand()
 	if minioBuildErr != nil {
 		fmt.Print(minioBuild)
@@ -136,13 +127,7 @@ func runMinioRelease(ctx *cli.Context) {
 	}
 	t := time.Now().UTC()
 	date := t.Format(time.RFC3339Nano)
-	//   [[STRING]-[EPOCH]
+	version := Version{Date: date}
-	//
-	// STRING is release string of your choice.
-	// EPOCH is unix seconds since Jan 1, 1970 UTC.
-	tag := "release" + "-" + strconv.FormatInt(t.Unix(), 10)
-
-	version := Version{Date: date, Tag: tag}
 	err := writeVersion(version)
 	if err != nil {
 		fmt.Print(err)
@@ -152,7 +137,6 @@ func runMinioRelease(ctx *cli.Context) {
 
 func main() {
 	app := cli.NewApp()
-	app.Usage = "Minimalist Object Storage"
 	app.Commands = []cli.Command{
 		{
 			Name:   "release",