mirror of https://github.com/minio/minio.git
386 lines
10 KiB
Go
386 lines
10 KiB
Go
/*
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* Minio Cloud Storage, (C) 2015, 2016, 2017 Minio, Inc.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package cmd
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import (
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"bufio"
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"fmt"
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"io/ioutil"
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"net/http"
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"os"
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"os/exec"
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"path/filepath"
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"runtime"
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"strings"
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"time"
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"github.com/fatih/color"
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"github.com/minio/cli"
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)
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// Check for new software updates.
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var updateCmd = cli.Command{
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Name: "update",
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Usage: "Check for a new software update.",
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Action: mainUpdate,
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Flags: []cli.Flag{
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cli.BoolFlag{
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Name: "quiet",
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Usage: "Disable any update messages.",
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},
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},
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CustomHelpTemplate: `Name:
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{{.HelpName}} - {{.Usage}}
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USAGE:
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{{.HelpName}}{{if .VisibleFlags}} [FLAGS]{{end}}
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{{if .VisibleFlags}}
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FLAGS:
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{{range .VisibleFlags}}{{.}}
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{{end}}{{end}}
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EXIT STATUS:
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0 - You are already running the most recent version.
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1 - New update is available.
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-1 - Error in getting update information.
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EXAMPLES:
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1. Check if there is a new update available:
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$ {{.HelpName}}
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`,
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}
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const (
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minioReleaseTagTimeLayout = "2006-01-02T15-04-05Z"
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minioReleaseURL = "https://dl.minio.io/server/minio/release/" + runtime.GOOS + "-" + runtime.GOARCH + "/"
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)
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func getCurrentReleaseTime(minioVersion, minioBinaryPath string) (releaseTime time.Time, err error) {
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if releaseTime, err = time.Parse(time.RFC3339, minioVersion); err == nil {
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return releaseTime, err
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}
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if !filepath.IsAbs(minioBinaryPath) {
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// Make sure to look for the absolute path of the binary.
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minioBinaryPath, err = exec.LookPath(minioBinaryPath)
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if err != nil {
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return releaseTime, err
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}
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}
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// Looks like version is minio non-standard, we use minio binary's ModTime as release time.
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fi, err := osStat(minioBinaryPath)
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if err != nil {
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err = fmt.Errorf("Unable to get ModTime of %s. %s", minioBinaryPath, err)
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} else {
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releaseTime = fi.ModTime().UTC()
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}
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return releaseTime, err
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}
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// GetCurrentReleaseTime - returns this process's release time. If it is official minio version,
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// parsed version is returned else minio binary's mod time is returned.
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func GetCurrentReleaseTime() (releaseTime time.Time, err error) {
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return getCurrentReleaseTime(Version, os.Args[0])
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}
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// Check if we are indeed inside docker.
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// https://github.com/moby/moby/blob/master/daemon/initlayer/setup_unix.go#L25
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//
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// "/.dockerenv": "file",
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//
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func isDocker(dockerEnvFile string) (ok bool, err error) {
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_, err = os.Stat(dockerEnvFile)
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if err != nil {
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if os.IsNotExist(err) {
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err = nil
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}
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return false, err
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}
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return true, nil
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}
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// IsDocker - returns if the environment minio is running
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// is docker or not.
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func IsDocker() bool {
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found, err := isDocker("/.dockerenv")
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// We don't need to fail for this check, log
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// an error and return false.
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errorIf(err, "Error in docker check.")
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return found
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}
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// IsDCOS returns true if minio is running in DCOS.
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func IsDCOS() bool {
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// http://mesos.apache.org/documentation/latest/docker-containerizer/
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// Mesos docker containerizer sets this value
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return os.Getenv("MESOS_CONTAINER_NAME") != ""
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}
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// IsKubernetes returns true if minio is running in kubernetes.
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func IsKubernetes() bool {
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// Kubernetes env used to validate if we are
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// indeed running inside a kubernetes pod
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// is KUBERNETES_SERVICE_HOST but in future
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// we might need to enhance this.
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return os.Getenv("KUBERNETES_SERVICE_HOST") != ""
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}
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// Minio Helm chart uses DownwardAPIFile to write pod label info to /podinfo/labels
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// More info: https://kubernetes.io/docs/tasks/inject-data-application/downward-api-volume-expose-pod-information/#store-pod-fields
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// Check if this is Helm package installation and report helm chart version
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func getHelmVersion(helmInfoFilePath string) string {
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// Read the file exists.
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helmInfoFile, err := os.Open(helmInfoFilePath)
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// Log errors and return "" as Minio can be deployed without Helm charts as well.
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if err != nil && !os.IsNotExist(err) {
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errorIf(err, "Unable to read %s", helmInfoFilePath)
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return ""
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}
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scanner := bufio.NewScanner(helmInfoFile)
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for scanner.Scan() {
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if strings.Contains(scanner.Text(), "chart=") {
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helmChartVersion := strings.TrimPrefix(scanner.Text(), "chart=")
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// remove quotes from the chart version
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return strings.Trim(helmChartVersion, `"`)
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}
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}
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return ""
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}
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func isSourceBuild(minioVersion string) bool {
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_, err := time.Parse(time.RFC3339, minioVersion)
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return err != nil
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}
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// IsSourceBuild - returns if this binary is made from source or not.
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func IsSourceBuild() bool {
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return isSourceBuild(Version)
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}
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// DO NOT CHANGE USER AGENT STYLE.
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// The style should be
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//
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// Minio (<OS>; <ARCH>[; dcos][; kubernetes][; docker][; source]) Minio/<VERSION> Minio/<RELEASE-TAG> Minio/<COMMIT-ID> [Minio/univers-<PACKAGE_NAME>]
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//
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// For any change here should be discussed by openning an issue at https://github.com/minio/minio/issues.
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func getUserAgent(mode string) string {
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userAgent := "Minio (" + runtime.GOOS + "; " + runtime.GOARCH
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if mode != "" {
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userAgent += "; " + mode
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}
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if IsDCOS() {
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userAgent += "; dcos"
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}
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if IsKubernetes() {
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userAgent += "; kubernetes"
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}
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if IsDocker() {
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userAgent += "; docker"
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}
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if IsSourceBuild() {
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userAgent += "; source"
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}
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userAgent += ") Minio/" + Version + " Minio/" + ReleaseTag + " Minio/" + CommitID
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if IsDCOS() {
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universePkgVersion := os.Getenv("MARATHON_APP_LABEL_DCOS_PACKAGE_VERSION")
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// On DC/OS environment try to the get universe package version.
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if universePkgVersion != "" {
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userAgent += " Minio/" + "universe-" + universePkgVersion
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}
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}
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if IsKubernetes() {
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// In Kubernetes environment, try to fetch the helm package version
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helmChartVersion := getHelmVersion("/podinfo/labels")
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if helmChartVersion != "" {
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userAgent += " Minio/" + "helm-" + helmChartVersion
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}
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}
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return userAgent
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}
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func downloadReleaseData(releaseChecksumURL string, timeout time.Duration, mode string) (data string, err error) {
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req, err := http.NewRequest("GET", releaseChecksumURL, nil)
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if err != nil {
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return data, err
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}
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req.Header.Set("User-Agent", getUserAgent(mode))
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client := &http.Client{
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Timeout: timeout,
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Transport: &http.Transport{
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// need to close connection after usage.
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DisableKeepAlives: true,
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},
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}
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resp, err := client.Do(req)
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if err != nil {
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return data, err
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}
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if resp == nil {
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return data, fmt.Errorf("No response from server to download URL %s", releaseChecksumURL)
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}
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defer resp.Body.Close()
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if resp.StatusCode != http.StatusOK {
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return data, fmt.Errorf("Error downloading URL %s. Response: %v", releaseChecksumURL, resp.Status)
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}
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dataBytes, err := ioutil.ReadAll(resp.Body)
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if err != nil {
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return data, fmt.Errorf("Error reading response. %s", err)
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}
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data = string(dataBytes)
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return data, err
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}
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// DownloadReleaseData - downloads release data from minio official server.
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func DownloadReleaseData(timeout time.Duration, mode string) (data string, err error) {
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data, err = downloadReleaseData(minioReleaseURL+"minio.shasum", timeout, mode)
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if err == nil {
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return data, nil
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}
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return downloadReleaseData(minioReleaseURL+"minio.sha256sum", timeout, mode)
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}
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func parseReleaseData(data string) (releaseTime time.Time, err error) {
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fields := strings.Fields(data)
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if len(fields) != 2 {
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err = fmt.Errorf("Unknown release data `%s`", data)
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return releaseTime, err
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}
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releaseInfo := fields[1]
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if fields = strings.Split(releaseInfo, "."); len(fields) != 3 {
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err = fmt.Errorf("Unknown release information `%s`", releaseInfo)
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return releaseTime, err
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}
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if !(fields[0] == "minio" && fields[1] == "RELEASE") {
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err = fmt.Errorf("Unknown release '%s'", releaseInfo)
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return releaseTime, err
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}
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releaseTime, err = time.Parse(minioReleaseTagTimeLayout, fields[2])
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if err != nil {
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err = fmt.Errorf("Unknown release time format. %s", err)
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}
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return releaseTime, err
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}
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func getLatestReleaseTime(timeout time.Duration, mode string) (releaseTime time.Time, err error) {
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data, err := DownloadReleaseData(timeout, mode)
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if err != nil {
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return releaseTime, err
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}
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return parseReleaseData(data)
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}
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const (
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// Kubernetes deployment doc link.
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kubernetesDeploymentDoc = "https://docs.minio.io/docs/deploy-minio-on-kubernetes"
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// Mesos deployment doc link.
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mesosDeploymentDoc = "https://docs.minio.io/docs/deploy-minio-on-dc-os"
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)
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func getDownloadURL(buildDate time.Time) (downloadURL string) {
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// Check if we are in DCOS environment, return
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// deployment guide for update procedures.
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if IsDCOS() {
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return mesosDeploymentDoc
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}
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// Check if we are in kubernetes environment, return
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// deployment guide for update procedures.
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if IsKubernetes() {
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return kubernetesDeploymentDoc
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}
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// Check if we are docker environment, return docker update command
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if IsDocker() {
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// Construct release tag name.
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rTag := "RELEASE." + buildDate.Format(minioReleaseTagTimeLayout)
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return fmt.Sprintf("docker pull minio/minio:%s", rTag)
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}
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// For binary only installations, then we just show binary download link.
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if runtime.GOOS == "windows" {
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return minioReleaseURL + "minio.exe"
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}
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return minioReleaseURL + "minio"
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}
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func getUpdateInfo(timeout time.Duration, mode string) (older time.Duration,
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downloadURL string, err error) {
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var currentReleaseTime, latestReleaseTime time.Time
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currentReleaseTime, err = GetCurrentReleaseTime()
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if err != nil {
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return older, downloadURL, err
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}
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latestReleaseTime, err = getLatestReleaseTime(timeout, mode)
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if err != nil {
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return older, downloadURL, err
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}
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if latestReleaseTime.After(currentReleaseTime) {
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older = latestReleaseTime.Sub(currentReleaseTime)
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downloadURL = getDownloadURL(latestReleaseTime)
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}
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return older, downloadURL, nil
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}
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func mainUpdate(ctx *cli.Context) {
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if len(ctx.Args()) != 0 {
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cli.ShowCommandHelpAndExit(ctx, "update", -1)
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}
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quiet := ctx.Bool("quiet") || ctx.GlobalBool("quiet")
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if quiet {
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log.EnableQuiet()
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}
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minioMode := ""
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older, downloadURL, err := getUpdateInfo(10*time.Second, minioMode)
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if err != nil {
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log.Println(err)
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os.Exit(-1)
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}
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if updateMsg := computeUpdateMessage(downloadURL, older); updateMsg != "" {
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log.Println(updateMsg)
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os.Exit(1)
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}
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colorSprintf := color.New(color.FgGreen, color.Bold).SprintfFunc()
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log.Println(colorSprintf("You are already running the most recent version of ‘minio’."))
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os.Exit(0)
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}
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