minio/cmd/main.go

163 lines
4.3 KiB
Go
Raw Blame History

This file contains ambiguous Unicode characters

This file contains Unicode characters that might be confused with other characters. If you think that this is intentional, you can safely ignore this warning. Use the Escape button to reveal them.

/*
* Minio Cloud Storage, (C) 2015, 2016, 2017, 2018 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 cmd
import (
"os"
"path/filepath"
"sort"
"github.com/minio/cli"
"github.com/minio/mc/pkg/console"
"github.com/minio/minio/pkg/trie"
"github.com/minio/minio/pkg/words"
)
// global flags for minio.
var globalFlags = []cli.Flag{
cli.StringFlag{
Name: "config-dir, C",
Value: getConfigDir(),
Usage: func() string {
usage := "Path to configuration directory."
if getConfigDir() == "" {
usage = usage + " This option must be set."
}
return usage
}(),
},
cli.BoolFlag{
Name: "quiet",
Usage: "Disable startup information.",
},
cli.BoolFlag{
Name: "anonymous",
Usage: "Hide sensitive information from logging.",
},
cli.BoolFlag{
Name: "json",
Usage: "Output server logs and startup information in json format.",
},
}
// Help template for minio.
var minioHelpTemplate = `NAME:
{{.Name}} - {{.Usage}}
DESCRIPTION:
{{.Description}}
USAGE:
{{.HelpName}} {{if .VisibleFlags}}[FLAGS] {{end}}COMMAND{{if .VisibleFlags}}{{end}} [ARGS...]
COMMANDS:
{{range .VisibleCommands}}{{join .Names ", "}}{{ "\t" }}{{.Usage}}
{{end}}{{if .VisibleFlags}}
FLAGS:
{{range .VisibleFlags}}{{.}}
{{end}}{{end}}
VERSION:
` + Version +
`{{ "\n"}}`
func newApp(name string) *cli.App {
// Collection of minio commands currently supported are.
commands := []cli.Command{}
// Collection of minio commands currently supported in a trie tree.
commandsTree := trie.NewTrie()
// registerCommand registers a cli command.
registerCommand := func(command cli.Command) {
commands = append(commands, command)
commandsTree.Insert(command.Name)
}
findClosestCommands := func(command string) []string {
var closestCommands []string
for _, value := range commandsTree.PrefixMatch(command) {
closestCommands = append(closestCommands, value.(string))
}
sort.Strings(closestCommands)
// Suggest other close commands - allow missed, wrongly added and
// even transposed characters
for _, value := range commandsTree.Walk(commandsTree.Root()) {
if sort.SearchStrings(closestCommands, value.(string)) < len(closestCommands) {
continue
}
// 2 is arbitrary and represents the max
// allowed number of typed errors
if words.DamerauLevenshteinDistance(command, value.(string)) < 2 {
closestCommands = append(closestCommands, value.(string))
}
}
return closestCommands
}
// Register all commands.
registerCommand(serverCmd)
registerCommand(gatewayCmd)
registerCommand(updateCmd)
registerCommand(versionCmd)
// Set up app.
cli.HelpFlag = cli.BoolFlag{
Name: "help, h",
Usage: "Show help.",
}
app := cli.NewApp()
app.Name = name
app.Author = "Minio.io"
app.Version = Version
app.Usage = "Cloud Storage Server."
app.Description = `Minio is an Amazon S3 compatible object storage server. Use it to store photos, videos, VMs, containers, log files, or any blob of data as objects.`
app.Flags = globalFlags
app.HideVersion = true // Hide `--version` flag, we already have `minio version`.
app.HideHelpCommand = true // Hide `help, h` command, we already have `minio --help`.
app.Commands = commands
app.CustomAppHelpTemplate = minioHelpTemplate
app.CommandNotFound = func(ctx *cli.Context, command string) {
console.Printf("%s is not a minio sub-command. See minio --help.\n", command)
closestCommands := findClosestCommands(command)
if len(closestCommands) > 0 {
console.Println()
console.Println("Did you mean one of these?")
for _, cmd := range closestCommands {
console.Printf("\t%s\n", cmd)
}
}
os.Exit(1)
}
return app
}
// Main main for minio server.
func Main(args []string) {
// Set the minio app name.
appName := filepath.Base(args[0])
// Run the app - exit on error.
if err := newApp(appName).Run(args); err != nil {
os.Exit(1)
}
}