4550bf251a
**What** - Update `template pull` command to parse a git reference name from the trailing hash/url fragment in the git url **Why** - This allows the user to pin the template to a specific revision or tag or even update from a specific branch Signed-off-by: Lucas Roesler <roesler.lucas@gmail.com>
119 lines
3.4 KiB
Go
119 lines
3.4 KiB
Go
// Copyright (c) Alex Ellis 2017. All rights reserved.
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// Licensed under the MIT license. See LICENSE file in the project root for full license information.
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package commands
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import (
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"fmt"
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"io/ioutil"
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"log"
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"os"
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"path/filepath"
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"github.com/openfaas/faas-cli/builder"
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"github.com/openfaas/faas-cli/versioncontrol"
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)
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// DefaultTemplateRepository contains the Git repo for the official templates
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const DefaultTemplateRepository = "https://github.com/openfaas/templates.git"
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const templateDirectory = "./template/"
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// fetchTemplates fetch code templates using git clone.
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func fetchTemplates(templateURL string, refName string, overwrite bool) error {
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if len(templateURL) == 0 {
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return fmt.Errorf("pass valid templateURL")
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}
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dir, err := ioutil.TempDir("", "openFaasTemplates")
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if err != nil {
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log.Fatal(err)
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}
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if !pullDebug {
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defer os.RemoveAll(dir) // clean up
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}
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log.Printf("Attempting to expand templates from %s\n", templateURL)
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pullDebugPrint(fmt.Sprintf("Temp files in %s", dir))
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args := map[string]string{"dir": dir, "repo": templateURL, "refname": refName}
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if err := versioncontrol.GitClone.Invoke(".", args); err != nil {
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return err
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}
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preExistingLanguages, fetchedLanguages, err := moveTemplates(dir, overwrite)
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if err != nil {
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return err
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}
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if len(preExistingLanguages) > 0 {
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log.Printf("Cannot overwrite the following %d template(s): %v\n", len(preExistingLanguages), preExistingLanguages)
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}
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log.Printf("Fetched %d template(s) : %v from %s\n", len(fetchedLanguages), fetchedLanguages, templateURL)
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return err
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}
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// canWriteLanguage tells whether the language can be expanded from the zip or not.
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// availableLanguages map keeps track of which languages we know to be okay to copy.
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// overwrite flag will allow to force copy the language template
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func canWriteLanguage(availableLanguages map[string]bool, language string, overwrite bool) bool {
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canWrite := false
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if availableLanguages != nil && len(language) > 0 {
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if _, found := availableLanguages[language]; found {
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return availableLanguages[language]
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}
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canWrite = templateFolderExists(language, overwrite)
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availableLanguages[language] = canWrite
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}
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return canWrite
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}
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// Takes a language input (e.g. "node"), tells whether or not it is OK to download
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func templateFolderExists(language string, overwrite bool) bool {
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dir := templateDirectory + language
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if _, err := os.Stat(dir); err == nil && !overwrite {
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// The directory template/language/ exists
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return false
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}
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return true
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}
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func moveTemplates(repoPath string, overwrite bool) ([]string, []string, error) {
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var (
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existingLanguages []string
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fetchedLanguages []string
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err error
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)
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availableLanguages := make(map[string]bool)
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templateDir := filepath.Join(repoPath, templateDirectory)
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templates, err := ioutil.ReadDir(templateDir)
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if err != nil {
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return nil, nil, fmt.Errorf("can't find templates in: %s", repoPath)
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}
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for _, file := range templates {
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if !file.IsDir() {
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continue
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}
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language := file.Name()
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canWrite := canWriteLanguage(availableLanguages, language, overwrite)
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if canWrite {
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fetchedLanguages = append(fetchedLanguages, language)
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// Do cp here
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languageSrc := filepath.Join(templateDir, language)
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languageDest := filepath.Join(templateDirectory, language)
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builder.CopyFiles(languageSrc, languageDest)
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} else {
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existingLanguages = append(existingLanguages, language)
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continue
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}
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}
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return existingLanguages, fetchedLanguages, nil
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}
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