func GetCurrentVersion() (string, error) {
fix := func(s string) string {
if !strings.HasPrefix(s, "v") {
s = "v" + s
}
return s
}
// try checking a locally running daemon first
apiurl, err := util.ApiEndpoint(util.IpfsDir())
if err == nil {
sh := api.NewShell(apiurl)
v, _, err := sh.Version()
if err == nil {
return fix(v), nil
}
}
stump.VLog("daemon check failed: %s", err)
_, err = exec.LookPath("ipfs")
if err != nil {
return "none", nil
}
// try running the ipfs binary in the users path
out, err := exec.Command("ipfs", "version", "-n").CombinedOutput()
if err != nil {
return "", fmt.Errorf("version check failed: %s - %s", string(out), err)
}
return fix(strings.Trim(string(out), " \n\t")), nil
}
func waitForApi(ipfspath string) error {
stump.VLog(" - waiting on daemon to come online")
var endpoint string
nloops := 15
var success bool
for i := 0; i < nloops; i++ {
ep, err := util.ApiEndpoint(ipfspath)
if err == nil {
stump.VLog(" - found api file")
endpoint = ep
success = true
break
}
if !os.IsNotExist(err) {
return err
}
time.Sleep(time.Millisecond * (100 * time.Duration(i+1)))
}
if !success {
stump.VLog(" - no api file found, trying fallback (happens pre 0.3.8)")
endpoint = "localhost:5001"
}
for i := 0; i < 10; i++ {
_, err := net.Dial("tcp", endpoint)
if err == nil {
return nil
}
time.Sleep(time.Millisecond * (100 * time.Duration(i+1)))
}
return fmt.Errorf("failed to come online")
}