func (w *TemplateWriterBase) WriteTemplate(templateName string, filename string, context interface{}) error {
tmpl, err := template.ParseFiles(filepath.Join(w.TemplateDir, templateName))
if err != nil {
return err
}
destFullPath := filepath.Join(w.OutputDir, filename)
if !w.shouldOverwriteExistingFile(destFullPath) {
newName := filename + ".old"
err = os.Rename(destFullPath, filepath.Join(w.OutputDir, newName))
if err != nil {
return err
}
common.PrintlnL2("Renaming %s to %s...", filename, newName)
}
destFile, err := os.Create(destFullPath)
if err != nil {
return err
}
defer func() {
if err := destFile.Close(); err != nil {
common.PrintlnError("Cannot close file %s due to: %s", filename, err.Error())
}
}()
common.PrintlnL2("Writing %s...", filename)
err = tmpl.Execute(destFile, context)
if err != nil {
return err
}
return w.prependToFile(destFullPath, templateHeader)
}
func (a *Analyzer) GuessPackages() *common.Lister {
packages := common.NewLister()
if runsExpress, _ := common.GetDependencyVersion(a.PackageJSON, "express"); runsExpress {
common.PrintlnL2("Found Express")
}
if hasScript, script := common.GetScriptsStart(a.PackageJSON); hasScript {
common.PrintlnL2("Found Script: %s", script)
}
return packages
}
func (a *AnalyzerBase) ConfirmDatabases(foundDbs *common.Lister) *common.Lister {
var dbs common.Lister
for _, db := range foundDbs.Items {
if !a.ShouldPrompt {
common.PrintlnL2("Found %s", db)
}
if common.AskYesOrNo(fmt.Sprintf("Found %s, confirm?", db), true, a.ShouldPrompt) {
dbs.Add(db)
}
}
var message string
var defaultValue bool
if len(foundDbs.Items) > 0 {
message = "Add any other databases?"
defaultValue = false
} else {
message = "No databases found. Add manually?"
defaultValue = true
}
if common.AskYesOrNo(message, defaultValue, a.ShouldPrompt) && a.ShouldPrompt {
common.PrintlnL1(" See http://help.cloud66.com/building-your-stack/docker-service-configuration#database-configs for complete list of possible values")
common.PrintlnL1(" Example: 'mysql elasticsearch' ")
common.PrintL1("> ")
reader := bufio.NewReader(os.Stdin)
otherDbs, err := reader.ReadString('\n')
if err == nil {
dbs.Add(strings.Fields(otherDbs)...)
}
}
return &dbs
}
func fetch(url string, mod *time.Time) (io.ReadCloser, error) {
common.PrintlnL2("Downloading from %s", url)
req, err := http.NewRequest("GET", url, nil)
if err != nil {
return nil, err
}
if mod != nil {
req.Header.Add("If-Modified-Since", mod.Format(http.TimeFormat))
}
resp, err := http.DefaultClient.Do(req)
if err != nil {
return nil, err
}
if mod != nil && resp.StatusCode == 304 {
return nil, errors.New("item moved")
}
if resp.StatusCode != 200 {
err := fmt.Errorf("bad http status from %s: %v", url, resp.Status)
return nil, err
}
if s := resp.Header.Get("Last-Modified"); mod != nil && s != "" {
t, err := time.Parse(http.TimeFormat, s)
if err == nil {
*mod = t
}
}
return resp.Body, nil
}
func (a *Analyzer) GuessPackages() *common.Lister {
packages := common.NewLister()
common.PrintlnL2("Analyzing dependencies")
if hasRmagick, _ := common.GetGemVersion(a.Gemfile, "rmagick", "refile-mini_magick", "mini_magick"); hasRmagick {
packages.Add("imagemagick", "libmagickwand-dev")
common.PrintlnL2("Found Image Magick")
}
if hasSqlite, _ := common.GetGemVersion(a.Gemfile, "sqlite"); hasSqlite {
packages.Add("libsqlite3-dev")
common.PrintlnL2("Found sqlite")
}
if hasMemcache, _ := common.GetGemVersion(a.Gemfile, "dalli"); hasMemcache {
packages.Add("memcached")
common.PrintlnL2("Found Memcache")
}
return packages
}
func (b *AnalyzerBase) DetectWebServer(a Analyzer, command string, servers []WebServer) (hasFound bool, webserver WebServer) {
for _, server := range servers {
for _, name := range server.Names() {
if a.HasPackage(name) || strings.HasPrefix(command, name) {
common.PrintlnL2("Found %s", name)
return true, server
}
}
}
return false, nil
}
func (a *AnalyzerBase) analyzeProcfile() ([]*common.Service, error) {
services := []*common.Service{}
procfilePath := filepath.Join(a.RootDir, "Procfile")
if !common.FileExists(procfilePath) {
a.Messages.Add("No Procfile was detected. It is strongly advised to add one in order to specify the commands to run your services.")
return services, nil
}
common.PrintlnL2("Parsing Procfile")
procs, err := common.ParseProcfile(procfilePath)
if err != nil {
return nil, err
}
for _, proc := range procs {
common.PrintlnL2("Found Procfile item %s", proc.Name)
services = append(services, &common.Service{Name: proc.Name, Command: proc.Command})
}
return services, nil
}
func (a *Analyzer) FindDatabases() *common.Lister {
dbs := common.NewLister()
if hasMysql, _ := common.GetGemVersion(a.Gemfile, "mysql2"); hasMysql {
dbs.Add("mysql")
}
if hasPg, _ := common.GetGemVersion(a.Gemfile, "pg"); hasPg {
dbs.Add("postgresql")
}
if hasRedis, _ := common.GetGemVersion(a.Gemfile, "redis", "redis-rails"); hasRedis {
dbs.Add("redis")
}
if hasMongoDB, _ := common.GetGemVersion(a.Gemfile, "mongo", "mongo_mapper", "dm-mongo-adapter", "mongoid"); hasMongoDB {
dbs.Add("mongodb")
}
if hasElasticsearch, _ := common.GetGemVersion(a.Gemfile, "elasticsearch", "tire", "flex", "chewy"); hasElasticsearch {
dbs.Add("elasticsearch")
}
if hasDatabaseYaml := common.FileExists("config/database.yml"); hasDatabaseYaml {
common.PrintlnL2("Found config/database.yml")
a.Messages.Add(
fmt.Sprintf("%s %s-> %s",
"database.yml: Make sure you are using environment variables.",
common.MsgReset, "http://help.cloud66.com/deployment/environment-variables"))
}
if hasMongoIdYaml := common.FileExists("config/mongoid.yml"); hasMongoIdYaml {
common.PrintlnL2("Found config/mongoid.yml")
a.Messages.Add(
fmt.Sprintf("%s %s-> %s",
"mongoid.yml: Make sure you are using environment variables.",
common.MsgReset, "http://help.cloud66.com/deployment/environment-variables"))
}
return dbs
}
// downloading templates from github and putting them into homedir
func getTempaltes(tempDir string) error {
common.PrintlnL0("Checking templates in %s", tempDir)
var tv templateDefinition
err := fetchJSON(strings.Replace(templatePath, "{{.branch}}", flagBranch, -1), nil, &tv)
if err != nil {
return err
}
// is there a local copy?
if _, err := os.Stat(filepath.Join(tempDir, "templates.json")); os.IsNotExist(err) {
// no file. downloading
common.PrintlnL1("No local templates found. Downloading now.")
err := os.MkdirAll(tempDir, 0777)
if err != nil {
return err
}
err = downloadTemplates(tempDir, tv)
if err != nil {
return err
}
}
// load the local json
templatesLocal, err := ioutil.ReadFile(filepath.Join(tempDir, "templates.json"))
if err != nil {
return err
}
var localTv templateDefinition
err = json.Unmarshal(templatesLocal, &localTv)
if err != nil {
return err
}
// compare
if localTv.Version != tv.Version {
common.PrintlnL2("Newer templates found. Downloading them now")
// they are different, we need to download the new ones
err = downloadTemplates(tempDir, tv)
if err != nil {
return err
}
} else {
common.PrintlnL1("Local templates are up to date")
}
return nil
}