func UpdateEris(branch string, checkGit bool, checkGo bool) {
//check that git/go are installed
hasGit, hasGo := CheckGitAndGo(checkGit, checkGo)
if hasGo == false {
log.Println("Go is not installed. Downloading eris-cli binary...")
_, err := downloadLatestRelease()
if err != nil {
log.Println("Latest binary failed to download with error:", err)
log.Println("Exiting...")
os.Exit(1)
}
} else if hasGit == false {
log.Println("Git is not installed. Please install git before continuing.")
log.Println("Exiting...")
os.Exit(1)
}
//checks for deprecated dir names and renames them
err := MigrateDeprecatedDirs(common.DirsToMigrate, false) // false = no prompt
if err != nil {
log.Warnf("Directory migration error: %v", err)
log.Warn("Continuing with update without migration")
}
//change pwd to eris/cli
ChangeDirectory("src")
if branch == "" {
branch = "master"
}
CheckoutBranch(branch)
PullBranch(branch)
InstallEris()
ver := version() //because version.Version will be in RAM.
log.WithField("=>", ver).Warn("The marmots have updated Eris successfully")
}
func downloadLatestRelease() (string, error) {
latestURL := "https://github.com/eris-ltd/eris-cli/releases/latest"
resp, err := http.Get(latestURL)
if err != nil {
log.Printf("could not retrieve latest eris release at %s", latestURL)
}
latestURL = resp.Request.URL.String()
lastPos := strings.LastIndex(latestURL, "/")
version := latestURL[lastPos+1:]
platform := runtime.GOOS
arch := runtime.GOARCH
hostURL := "https://github.com/eris-ltd/eris-cli/releases/download/" + version + "/"
filename := "eris_" + version[1:] + "_" + platform + "_" + arch
fileURL := hostURL + filename
switch platform {
case "linux":
filename += ".tar.gz"
default:
filename += ".zip"
}
ChangeDirectory("bin")
var erisBin string
output, err := os.Create(filename)
// if we dont have permissions to create a file where eris cli exists, attempt to create file within HOME folder
if err != nil {
erisBin := filepath.Join(common.ScratchPath, "bin")
if _, err = os.Stat(erisBin); os.IsNotExist(err) {
err = os.MkdirAll(erisBin, 0755)
if err != nil {
log.Println("Error creating directory", erisBin, "Did not download binary. Exiting...")
return "", err
}
}
err = os.Chdir(erisBin)
if err != nil {
log.Println("Error changing directory to", erisBin, "Did not download binary. Exiting...")
return "", err
}
output, err = os.Create(filename)
if err != nil {
log.Println("Error creating file", erisBin, "Exiting...")
return "", err
}
}
defer output.Close()
fileResponse, err := http.Get(fileURL)
if err != nil {
log.Println("Error while downloading", filename, "-", err)
return "", err
}
defer fileResponse.Body.Close()
io.Copy(output, fileResponse.Body)
if err != nil {
log.Println("Error saving downloaded file", filename, "-", err)
return "", err
}
erisLoc, _ := exec.LookPath("eris")
if erisBin != "" {
log.Println("downloaded eris binary", version, "for", platform, "to", erisBin, "\n Please manually move to", erisLoc)
} else {
log.Println("downloaded eris binary", version, "for", platform, "to", erisLoc)
}
var unzip string = "tar -xvf"
if platform != "linux" {
unzip = "unzip"
}
cmd := exec.Command("bin/sh", "-c", unzip, filename)
err = cmd.Run()
if err != nil {
log.Println("unzipping", filename, "failed:", err)
}
return filename, nil
}