kubo/cmd/ipfs/version.go
2014-10-09 19:58:19 -07:00

104 lines
2.6 KiB
Go

package main
import (
"encoding/json"
"fmt"
"net/http"
"os"
semver "github.com/coreos/go-semver/semver"
"github.com/jbenet/go-ipfs/Godeps/_workspace/src/github.com/jbenet/commander"
u "github.com/jbenet/go-ipfs/util"
)
// The IPFS version.
const (
Version = "0.1.0"
EndpointURLLatestReleases = "https://api.github.com/repos/jbenet/go-ipfs/tags"
VersionErrorShort = `Warning: You are running version %s of go-ipfs. The latest version is %s.`
VersionErrorLong = `
Warning: You are running version %s of go-ipfs. The latest version is %s.
Since this is alpha software, it is strongly recommended you update.
You can update go-ipfs by running
ipfs version update
You can silence this message by running
ipfs config update.check ignore
`
)
var cmdIpfsVersion = &commander.Command{
UsageLine: "version",
Short: "Show ipfs version information.",
Long: `ipfs version - Show ipfs version information.
Returns the current version of ipfs and exits.
`,
Run: versionCmd,
}
var currentVersion *semver.Version
func init() {
var err error
currentVersion, err = semver.NewVersion(Version)
if err != nil {
fmt.Printf("The const Version literal in version.go needs to be in semver format: %s \n", Version)
os.Exit(1)
}
cmdIpfsVersion.Flag.Bool("number", false, "show only the number")
}
func versionCmd(c *commander.Command, _ []string) error {
number := c.Flag.Lookup("number").Value.Get().(bool)
if !number {
u.POut("ipfs version ")
}
u.POut("%s\n", Version)
return nil
}
func checkForUpdates() error {
resp, err := http.Get(EndpointURLLatestReleases)
if err != nil {
// can't reach the endpoint, coud be firewall, or no internet connection or something else
// will just silently move on
return nil
}
var body interface{}
_ = json.NewDecoder(resp.Body).Decode(&body)
releases, ok := body.([]interface{})
if !ok {
// the response body does not seem to meet specified Github API format
// https://developer.github.com/v3/repos/#list-tags
// will just silently move on
return nil
}
for _, r := range releases {
release, ok := r.(map[string]interface{})
if !ok {
continue
}
tagName, ok := release["name"].(string)
if !ok {
continue
}
if len(tagName) > 0 && tagName[0] == 'v' {
// both 'v0.1.0' and '0.1.0' semver tagname conventions can be encountered
tagName = tagName[1:]
}
releaseVersion, err := semver.NewVersion(tagName)
if err != nil {
continue
}
if currentVersion.LessThan(*releaseVersion) {
return fmt.Errorf(VersionErrorLong, Version, tagName)
}
}
return nil
}