/
main.go
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/
main.go
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/*
* Minio Client (C) 2014, 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"
"github.com/fatih/color"
"github.com/minio/cli"
"github.com/minio/mc/pkg/console"
"github.com/minio/minio/pkg/probe"
"github.com/minio/pb"
"github.com/olekukonko/ts"
)
// Check for the user id erarly on and gracefully report.
func checkUser() {
_, e := user.Current()
fatalIf(probe.NewError(e), "Unable to determine current user.")
if runtime.GOOS != "windows" {
if os.Geteuid() == 0 {
fatalIf(errDummy().Trace(), "Please run as a normal user, running as root is disallowed")
}
}
}
// Check for sane config environment early on and gracefully report.
func checkConfig() {
// Ensures config file is sane
_, err := getMcConfig()
fatalIf(err.Trace(), "Unable to access configuration file.")
}
func migrate() {
// Fix broken config files if any.
fixConfig()
// Migrate config files if any.
migrateConfig()
// Migrate session files if any.
migrateSession()
// Migrate shared urls if any.
migrateSharedURLs()
}
// Get os/arch/platform specific information.
// Returns a map of current os/arch/platform/memstats
func getSystemData() map[string]string {
host, e := os.Hostname()
fatalIf(probe.NewError(e), "Unable to determine the hostname.")
memstats := &runtime.MemStats{}
runtime.ReadMemStats(memstats)
mem := fmt.Sprintf("Used: %s | Allocated: %s | UsedHeap: %s | AllocatedHeap: %s",
pb.FormatBytes(int64(memstats.Alloc)),
pb.FormatBytes(int64(memstats.TotalAlloc)),
pb.FormatBytes(int64(memstats.HeapAlloc)),
pb.FormatBytes(int64(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 registerBefore(ctx *cli.Context) error {
setMcConfigDir(ctx.GlobalString("config-folder"))
globalQuietFlag = ctx.GlobalBool("quiet")
globalMimicFlag = ctx.GlobalBool("mimic")
globalDebugFlag = ctx.GlobalBool("debug")
globalJSONFlag = ctx.GlobalBool("json")
if globalDebugFlag {
console.NoDebugPrint = false
}
setMainPalette(ctx.GlobalString("colors"))
// check if mc is being run as root
checkUser()
// verify golang runtime
verifyMCRuntime()
// Migrate any old version of config / state files to newer format.
migrate()
// checkConfig if it can be read
checkConfig()
return nil
}
func findClosestCommands(command string) []string {
var closestCommands []string
for _, value := range commandsTree.PrefixMatch(command) {
closestCommands = append(closestCommands, value.(string))
}
return closestCommands
}
func registerApp() *cli.App {
// Register all the commands
registerCmd(lsCmd) // List contents of a bucket.
registerCmd(mbCmd) // Make a bucket.
registerCmd(catCmd) // Display contents of a file.
registerCmd(pigCmd) // Write contents of stdin to a file.
registerCmd(cpCmd) // Copy objects and files from multiple sources to single destination.
registerCmd(mirrorCmd) // Mirror objects and files from single source to multiple destinations.
registerCmd(sessionCmd) // Manage sessions for copy and mirror.
registerCmd(shareCmd) // Share documents via URL.
registerCmd(diffCmd) // Computer differences between two files or folders.
registerCmd(accessCmd) // Set access permissions.
registerCmd(configCmd) // Configure minio client.
registerCmd(updateCmd) // Check for new software updates.
registerCmd(versionCmd) // Print version.
// register all the flags
registerFlag(configFlag) // Path to configuration folder.
registerFlag(quietFlag) // Suppress chatty console output.
registerFlag(mimicFlag) // Behave like operating system tools. Use with shell aliases.
registerFlag(jsonFlag) // Enable json formatted output.
registerFlag(debugFlag) // Enable debugging output.
registerFlag(colorsFlag) // Choose different styles of console coloring.
app := cli.NewApp()
app.Usage = "Minio Client for cloud storage and filesystems."
// hide --version flag, version is a command
app.HideVersion = true
app.Commands = commands
app.Flags = flags
app.Author = "Minio.io"
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:
` + mcVersion +
`{{ "\n"}} {{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 ‘mc help’.", command)
closestCommands := findClosestCommands(command)
if len(closestCommands) > 0 {
msg += fmt.Sprintf("\n\nDid you mean one of these?\n")
for _, cmd := range closestCommands {
msg += fmt.Sprintf(" ‘%s’\n", cmd)
}
}
fatalIf(errDummy().Trace(), msg)
}
return app
}
func setMainPalette(style string) {
console.SetCustomPalette(map[string]*color.Color{
"Debug": color.New(color.FgWhite, color.Faint, color.Italic),
"Fatal": color.New(color.FgRed, color.Italic, color.Bold),
"Error": color.New(color.FgYellow, color.Italic),
"Info": color.New(color.FgGreen, color.Bold),
"Print": color.New(),
"PrintC": color.New(color.FgGreen, color.Bold),
})
if style == "light" {
console.SetCustomPalette(map[string]*color.Color{
"Debug": color.New(color.FgWhite, color.Faint, color.Italic),
"Fatal": color.New(color.FgWhite, color.Italic, color.Bold),
"Error": color.New(color.FgWhite, color.Italic, color.Bold),
"Info": color.New(color.FgWhite, color.Bold),
"Print": color.New(),
"PrintC": color.New(color.FgWhite, color.Bold),
})
return
}
/// Add more styles here
if style == "nocolor" {
// All coloring options exhausted, setting nocolor safely
console.SetNoColor()
}
}
func main() {
app := registerApp()
app.Before = registerBefore
app.ExtraInfo = func() map[string]string {
if _, e := ts.GetSize(); e != nil {
globalQuietFlag = true
}
if globalDebugFlag {
return getSystemData()
}
return make(map[string]string)
}
app.RunAndExitOnError()
}