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/ *
* 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 .
* /
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package cmd
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import (
"encoding/json"
"errors"
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"io/ioutil"
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"net/http"
"runtime"
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"strings"
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"time"
"github.com/fatih/color"
"github.com/minio/cli"
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"github.com/minio/mc/pkg/console"
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)
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// command specific flags.
var (
updateFlags = [ ] cli . Flag {
cli . BoolFlag {
Name : "experimental, E" ,
Usage : "Check experimental update." ,
} ,
}
)
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// Check for new software updates.
var updateCmd = cli . Command {
Name : "update" ,
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Usage : "Check for a new software update." ,
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Action : mainUpdate ,
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Flags : append ( updateFlags , globalFlags ... ) ,
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CustomHelpTemplate : ` Name :
minio { { . Name } } - { { . Usage } }
USAGE :
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minio { { . Name } } [ FLAGS ]
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FLAGS :
{ { range . Flags } } { { . } }
{ { end } }
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EXAMPLES :
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1. Check for any new official release .
$ minio { { . Name } }
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2. Check for any new experimental release .
$ minio { { . Name } } -- experimental
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` ,
}
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// update URL endpoints.
const (
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minioUpdateStableURL = "https://dl.minio.io/server/minio/release"
minioUpdateExperimentalURL = "https://dl.minio.io/server/minio/experimental"
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)
// updateMessage container to hold update messages.
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type updateMessage struct {
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Status string ` json:"status" `
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Update bool ` json:"update" `
Download string ` json:"downloadURL" `
Version string ` json:"version" `
}
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// String colorized update message.
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func ( u updateMessage ) String ( ) string {
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if ! u . Update {
updateMessage := color . New ( color . FgGreen , color . Bold ) . SprintfFunc ( )
return updateMessage ( "You are already running the most recent version of ‘ minio’ ." )
}
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msg := colorizeUpdateMessage ( u . Download )
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return msg
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}
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// JSON jsonified update message.
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func ( u updateMessage ) JSON ( ) string {
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u . Status = "success"
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updateMessageJSONBytes , err := json . Marshal ( u )
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fatalIf ( ( err ) , "Unable to marshal into JSON." )
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return string ( updateMessageJSONBytes )
}
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func parseReleaseData ( data string ) ( time . Time , error ) {
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releaseStr := strings . Fields ( data )
if len ( releaseStr ) < 2 {
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return time . Time { } , errors . New ( "Update data malformed" )
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}
releaseDate := releaseStr [ 1 ]
releaseDateSplits := strings . SplitN ( releaseDate , "." , 3 )
if len ( releaseDateSplits ) < 3 {
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return time . Time { } , ( errors . New ( "Update data malformed" ) )
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}
if releaseDateSplits [ 0 ] != "minio" {
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return time . Time { } , ( errors . New ( "Update data malformed, missing minio tag" ) )
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}
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// "OFFICIAL" tag is still kept for backward compatibility, we should remove this for the next release.
if releaseDateSplits [ 1 ] != "RELEASE" && releaseDateSplits [ 1 ] != "OFFICIAL" {
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return time . Time { } , ( errors . New ( "Update data malformed, missing RELEASE tag" ) )
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}
dateSplits := strings . SplitN ( releaseDateSplits [ 2 ] , "T" , 2 )
if len ( dateSplits ) < 2 {
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return time . Time { } , ( errors . New ( "Update data malformed, not in modified RFC3359 form" ) )
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}
dateSplits [ 1 ] = strings . Replace ( dateSplits [ 1 ] , "-" , ":" , - 1 )
date := strings . Join ( dateSplits , "T" )
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parsedDate , err := time . Parse ( time . RFC3339 , date )
if err != nil {
return time . Time { } , err
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}
return parsedDate , nil
}
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// verify updates for releases.
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func getReleaseUpdate ( updateURL string ) ( updateMsg updateMessage , errMsg string , err error ) {
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// Construct a new update url.
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newUpdateURLPrefix := updateURL + "/" + runtime . GOOS + "-" + runtime . GOARCH
newUpdateURL := newUpdateURLPrefix + "/minio.shasum"
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// Get the downloadURL.
var downloadURL string
switch runtime . GOOS {
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case "windows" :
// For windows.
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downloadURL = newUpdateURLPrefix + "/minio.exe"
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default :
// For all other operating systems.
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downloadURL = newUpdateURLPrefix + "/minio"
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}
// Initialize update message.
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updateMsg = updateMessage {
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Download : downloadURL ,
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Version : Version ,
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}
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// Instantiate a new client with 3 sec timeout.
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client := & http . Client {
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Timeout : 3 * time . Second ,
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}
// Parse current minio version into RFC3339.
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current , err := time . Parse ( time . RFC3339 , Version )
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if err != nil {
errMsg = "Unable to parse version string as time."
return
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}
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// Verify if current minio version is zero.
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if current . IsZero ( ) {
err = errors . New ( "date should not be zero" )
errMsg = "Updates mechanism is not supported for custom builds. Please download official releases from https://minio.io/#minio"
return
}
// Fetch new update.
data , err := client . Get ( newUpdateURL )
if err != nil {
return
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}
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// Verify if we have a valid http response i.e http.StatusOK.
if data != nil {
if data . StatusCode != http . StatusOK {
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errMsg = "Failed to retrieve update notice."
err = errors . New ( "http status : " + data . Status )
return
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}
}
// Read the response body.
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updateBody , err := ioutil . ReadAll ( data . Body )
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if err != nil {
errMsg = "Failed to retrieve update notice. Please try again later."
return
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}
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errMsg = "Failed to retrieve update notice. Please try again later. Please report this issue at https://github.com/minio/minio/issues"
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// Parse the date if its valid.
latest , err := parseReleaseData ( string ( updateBody ) )
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if err != nil {
return
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}
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// Verify if the date is not zero.
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if latest . IsZero ( ) {
err = errors . New ( "date should not be zero" )
return
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}
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// Is the update latest?.
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if latest . After ( current ) {
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updateMsg . Update = true
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}
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// Return update message.
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return updateMsg , "" , nil
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}
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// main entry point for update command.
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func mainUpdate ( ctx * cli . Context ) {
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// Error out if 'update' command is issued for development based builds.
if Version == "DEVELOPMENT.GOGET" {
fatalIf ( errors . New ( "" ) , "Update mechanism is not supported for ‘ go get’ based binary builds. Please download official releases from https://minio.io/#minio" )
}
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// Check for update.
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var updateMsg updateMessage
var errMsg string
var err error
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if ctx . Bool ( "experimental" ) {
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updateMsg , errMsg , err = getReleaseUpdate ( minioUpdateExperimentalURL )
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} else {
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updateMsg , errMsg , err = getReleaseUpdate ( minioUpdateStableURL )
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}
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fatalIf ( err , errMsg )
console . Println ( updateMsg )
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}