518 lines
15 KiB
Go
518 lines
15 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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"crypto"
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_ "crypto/sha256" // Needed for sha256 hash verifier.
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"encoding/hex"
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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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"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/inconshreveable/go-update"
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"github.com/minio/cli"
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"github.com/segmentio/go-prompt"
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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 prompt message.",
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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 was applied successfully.
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-1 - Error in getting update information.
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EXAMPLES:
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1. Check and update minio:
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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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minioOSARCH = runtime.GOOS + "-" + runtime.GOARCH
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minioReleaseURL = "https://dl.minio.io/server/minio/release/" + minioOSARCH + "/"
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)
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var (
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// Newer official download info URLs appear earlier below.
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minioReleaseInfoURLs = []string{
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minioReleaseURL + "minio.sha256sum",
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minioReleaseURL + "minio.shasum",
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}
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)
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// minioVersionToReleaseTime - parses a standard official release
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// Minio version string.
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//
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// An official binary's version string is the release time formatted
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// with RFC3339 (in UTC) - e.g. `2017-09-29T19:16:56Z`
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func minioVersionToReleaseTime(version string) (releaseTime time.Time, err error) {
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return time.Parse(time.RFC3339, version)
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}
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// releaseTimeToReleaseTag - converts a time to a string formatted as
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// an official Minio release tag.
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//
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// An official minio release tag looks like:
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// `RELEASE.2017-09-29T19-16-56Z`
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func releaseTimeToReleaseTag(releaseTime time.Time) string {
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return "RELEASE." + releaseTime.Format(minioReleaseTagTimeLayout)
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}
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// releaseTagToReleaseTime - reverse of `releaseTimeToReleaseTag()`
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func releaseTagToReleaseTime(releaseTag string) (releaseTime time.Time, err error) {
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tagTimePart := strings.TrimPrefix(releaseTag, "RELEASE.")
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if tagTimePart == releaseTag {
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return releaseTime, fmt.Errorf("%s is not a valid release tag", releaseTag)
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}
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return time.Parse(minioReleaseTagTimeLayout, tagTimePart)
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}
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// getModTime - get the file modification time of `path`
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func getModTime(path string) (t time.Time, err error) {
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// Convert to absolute path
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absPath, err := filepath.Abs(path)
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if err != nil {
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return t, fmt.Errorf("Unable to get absolute path of %s. %s", path, err)
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}
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// Version is minio non-standard, we will use minio binary's
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// ModTime as release time.
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fi, err := os.Stat(absPath)
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if err != nil {
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return t, fmt.Errorf("Unable to get ModTime of %s. %s", absPath, err)
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}
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// Return the ModTime
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return fi.ModTime().UTC(), nil
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}
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// GetCurrentReleaseTime - returns this process's release time. If it
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// is official minio version, parsed version is returned else minio
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// binary's mod time is returned.
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func GetCurrentReleaseTime() (releaseTime time.Time, err error) {
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if releaseTime, err = minioVersionToReleaseTime(Version); err == nil {
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return releaseTime, err
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}
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// Looks like version is minio non-standard, we use minio
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// binary's ModTime as release time:
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return getModTime(os.Args[0])
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}
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// IsDocker - returns if the environment minio is running in docker or
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// not. The check is a simple file existence check.
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//
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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() bool {
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_, err := os.Stat("/.dockerenv")
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if os.IsNotExist(err) {
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return false
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}
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// Log error, as we will not propagate it to caller
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errorIf(err, "Error in docker check.")
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return err == nil
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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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// IsBOSH returns true if minio is deployed from a bosh package
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func IsBOSH() bool {
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// "/var/vcap/bosh" exists in BOSH deployed instance.
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_, err := os.Stat("/var/vcap/bosh")
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if os.IsNotExist(err) {
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return false
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}
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// Log error, as we will not propagate it to caller
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errorIf(err, "Error in BOSH check.")
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return err == nil
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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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if err != nil {
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// Log errors and return "" as Minio can be deployed
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// without Helm charts as well.
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if !os.IsNotExist(err) {
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errorIf(err, "Unable to read %s", helmInfoFilePath)
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}
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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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// IsSourceBuild - returns if this binary is a non-official build from
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// source code.
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func IsSourceBuild() bool {
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_, err := minioVersionToReleaseTime(Version)
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return err != nil
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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>[; <MODE>][; dcos][; kubernetes][; docker][; source]) Minio/<VERSION> Minio/<RELEASE-TAG> Minio/<COMMIT-ID> [Minio/universe-<PACKAGE-NAME>] [Minio/helm-<HELM-VERSION>]
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//
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// Any change here should be discussed by opening an issue at
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// https://github.com/minio/minio/issues.
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func getUserAgent(mode string) string {
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userAgentParts := []string{}
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// Helper function to concisely append a pair of strings to a
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// the user-agent slice.
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uaAppend := func(p, q string) {
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userAgentParts = append(userAgentParts, p, q)
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}
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uaAppend("Minio (", runtime.GOOS)
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uaAppend("; ", runtime.GOARCH)
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if mode != "" {
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uaAppend("; ", mode)
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}
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if IsDCOS() {
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uaAppend("; ", "dcos")
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}
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if IsKubernetes() {
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uaAppend("; ", "kubernetes")
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}
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if IsDocker() {
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uaAppend("; ", "docker")
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}
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if IsBOSH() {
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uaAppend("; ", "bosh")
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}
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if IsSourceBuild() {
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uaAppend("; ", "source")
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}
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uaAppend(") Minio/", Version)
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uaAppend(" Minio/", ReleaseTag)
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uaAppend(" 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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uaAppend(" 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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uaAppend(" Minio/helm-", helmChartVersion)
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}
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}
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pcfTileVersion := os.Getenv("MINIO_PCF_TILE_VERSION")
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if pcfTileVersion != "" {
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uaAppend(" Minio/pcf-tile-", pcfTileVersion)
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}
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return strings.Join(userAgentParts, "")
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}
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func downloadReleaseURL(releaseChecksumURL string, timeout time.Duration, mode string) (content 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 content, 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 content, err
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}
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if resp == nil {
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return content, 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 content, fmt.Errorf("Error downloading URL %s. Response: %v", releaseChecksumURL, resp.Status)
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}
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contentBytes, err := ioutil.ReadAll(resp.Body)
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if err != nil {
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return content, fmt.Errorf("Error reading response. %s", err)
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}
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return string(contentBytes), 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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for _, url := range minioReleaseInfoURLs {
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data, err = downloadReleaseURL(url, timeout, mode)
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if err == nil {
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return data, err
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}
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}
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return data, fmt.Errorf("Failed to fetch release URL - last error: %s", err)
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}
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// parseReleaseData - parses release info file content fetched from
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// official minio download server.
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//
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// The expected format is a single line with two words like:
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//
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// fbe246edbd382902db9a4035df7dce8cb441357d minio.RELEASE.2016-10-07T01-16-39Z
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//
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// The second word must be `minio.` appended to a standard release tag.
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func parseReleaseData(data string) (sha256Hex 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 sha256Hex, releaseTime, err
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}
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sha256Hex = fields[0]
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releaseInfo := fields[1]
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fields = strings.SplitN(releaseInfo, ".", 2)
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if len(fields) != 2 {
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err = fmt.Errorf("Unknown release information `%s`", releaseInfo)
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return sha256Hex, releaseTime, err
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}
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if fields[0] != "minio" {
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err = fmt.Errorf("Unknown release `%s`", releaseInfo)
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return sha256Hex, releaseTime, err
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}
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releaseTime, err = releaseTagToReleaseTime(fields[1])
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if err != nil {
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err = fmt.Errorf("Unknown release tag format. %s", err)
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}
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return sha256Hex, releaseTime, err
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}
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func getLatestReleaseTime(timeout time.Duration, mode string) (sha256Hex 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 sha256Hex, 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(releaseTag string) (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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return fmt.Sprintf("docker pull minio/minio:%s", releaseTag)
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}
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// For binary only installations, we return link to the latest binary.
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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) (updateMsg string, sha256Hex string, currentReleaseTime, latestReleaseTime time.Time, err error) {
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currentReleaseTime, err = GetCurrentReleaseTime()
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if err != nil {
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return updateMsg, sha256Hex, currentReleaseTime, latestReleaseTime, err
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}
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sha256Hex, latestReleaseTime, err = getLatestReleaseTime(timeout, mode)
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if err != nil {
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return updateMsg, sha256Hex, currentReleaseTime, latestReleaseTime, err
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}
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var older time.Duration
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var downloadURL string
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if latestReleaseTime.After(currentReleaseTime) {
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older = latestReleaseTime.Sub(currentReleaseTime)
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downloadURL = getDownloadURL(releaseTimeToReleaseTag(latestReleaseTime))
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}
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return prepareUpdateMessage(downloadURL, older), sha256Hex, currentReleaseTime, latestReleaseTime, nil
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}
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func doUpdate(sha256Hex string, latestReleaseTime time.Time, ok bool) (successMsg string, err error) {
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if !ok {
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successMsg = greenColorSprintf("Minio update to version RELEASE.%s cancelled.",
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latestReleaseTime.Format(minioReleaseTagTimeLayout))
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return successMsg, nil
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}
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var sha256Sum []byte
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sha256Sum, err = hex.DecodeString(sha256Hex)
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if err != nil {
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return successMsg, err
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}
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resp, err := http.Get(getDownloadURL(releaseTimeToReleaseTag(latestReleaseTime)))
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if err != nil {
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return successMsg, err
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}
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defer resp.Body.Close()
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// FIXME: add support for gpg verification as well.
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if err = update.RollbackError(update.Apply(resp.Body,
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update.Options{
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Hash: crypto.SHA256,
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Checksum: sha256Sum,
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},
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)); err != nil {
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return successMsg, err
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}
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return greenColorSprintf("Minio updated to version RELEASE.%s successfully.",
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latestReleaseTime.Format(minioReleaseTagTimeLayout)), nil
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}
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func shouldUpdate(quiet bool, sha256Hex string, latestReleaseTime time.Time) (ok bool) {
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ok = true
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if !quiet {
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ok = prompt.Confirm(greenColorSprintf("Update to RELEASE.%s [%s]", latestReleaseTime.Format(minioReleaseTagTimeLayout), "yes"))
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}
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return ok
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}
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var greenColorSprintf = color.New(color.FgGreen, color.Bold).SprintfFunc()
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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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handleCommonEnvVars()
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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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updateMsg, sha256Hex, _, latestReleaseTime, 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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// Nothing to update running the latest release.
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if updateMsg == "" {
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log.Println(greenColorSprintf("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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log.Println(updateMsg)
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// if the in-place update is disabled then we shouldn't ask the
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// user to update the binaries.
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if strings.Contains(updateMsg, minioReleaseURL) && !globalInplaceUpdateDisabled {
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var successMsg string
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successMsg, err = doUpdate(sha256Hex, latestReleaseTime, shouldUpdate(quiet, sha256Hex, latestReleaseTime))
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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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log.Println(successMsg)
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os.Exit(1)
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}
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}
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