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mc/update-main.go

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/*
* Minio Client (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 (
"encoding/json"
"net/http"
"runtime"
"time"
"github.com/minio/cli"
"github.com/minio/mc/pkg/console"
"github.com/minio/minio/pkg/probe"
)
// Updates container to hold updates json
type Updates struct {
BuildDate string
Platforms map[string]string
}
const (
mcUpdateURL = "https://dl.minio.io:9000/updates/updates.json"
)
// Help message.
var updateCmd = cli.Command{
Name: "update",
Usage: "Check for new software updates",
Action: mainUpdate,
CustomHelpTemplate: `Name:
mc {{.Name}} - {{.Usage}}
USAGE:
mc {{.Name}}{{if .Flags}} [ARGS...]{{end}}
EXAMPLES:
1. Check for new updates
$ mc update
`,
}
// mainUpdate -
func mainUpdate(ctx *cli.Context) {
if ctx.Args().First() == "help" {
cli.ShowCommandHelpAndExit(ctx, "update", 1) // last argument is exit code
}
clnt, err := url2Client(mcUpdateURL)
fatalIf(err.Trace(), "Unable to initalize update URL")
data, _, err := clnt.GetObject(0, 0)
fatalIf(err.Trace(), "Unable to read update URL")
current, goerr := time.Parse(time.RFC3339Nano, Version)
fatalIf(probe.NewError(goerr), "Unable to parse Version as time")
if current.IsZero() {
console.Infoln(`Version is empty, must be a custom build cannot update. Please download releases from
https://dl.minio.io:9000 for continuous updates`)
return
}
var updates Updates
decoder := json.NewDecoder(data)
goerr = decoder.Decode(&updates)
fatalIf(probe.NewError(goerr), "Unable to decode update URL data")
latest, goerr := time.Parse(http.TimeFormat, updates.BuildDate)
fatalIf(probe.NewError(goerr), "Unable to parse BuildDate")
if latest.IsZero() {
console.Infoln("No update available at this time")
return
}
mcUpdateURLParse := clnt.URL()
if latest.After(current) {
var updateString string
if runtime.GOOS == "windows" {
updateString = "mc.exe cp " + mcUpdateURLParse.Scheme + "://" + mcUpdateURLParse.Host + string(mcUpdateURLParse.Separator) + updates.Platforms[runtime.GOOS] + " .\\mc.exe"
} else {
updateString = "mc cp " + mcUpdateURLParse.Scheme + "://" + mcUpdateURLParse.Host + string(mcUpdateURLParse.Separator) + updates.Platforms[runtime.GOOS] + " ./mc"
}
msg, err := printUpdateNotify(updateString, "new", "old")
fatalIf(probe.NewError(err), "Unable to print update notification")
console.Println(msg)
return
}
console.Infoln("You are already running the most recent version of mc")
return
}