wip

common/git_utils.go

@@ -27,6 +27,7 @@ import (
 	"log"
 	"os"
 	"os/exec"
+	"path"
 	"path/filepath"
 	"strings"
 	"sync"
@@ -44,6 +45,9 @@ type GitStatusLister interface {
 }
 
 type Git interface {
+	// error if git, but wrong remote
+	Clone(remoteUrl string) error // clone, or chekc if path is already checked out remote, error otherwise
+
 	GitParseCommits(cwd string, commitIDs []string) (parsedCommits []GitCommit, err error)
 	GitCatFile(cwd, commitId, filename string) (data []byte, err error)
 	GetPath() string
@@ -66,6 +70,8 @@ type GitHandlerImpl struct {
 	GitPath     string
 	GitCommiter string
 	GitEmail    string
+
+	lock GitHandlerGenerator
 }
 
 func (s *GitHandlerImpl) GetPath() string {
@@ -73,34 +79,76 @@ func (s *GitHandlerImpl) GetPath() string {
 }
 
 type GitHandlerGenerator interface {
-	CreateGitHandler(git_author, email, prjName string) (Git, error)
-	ReadExistingPath(git_author, email, gitPath string) (Git, error)
+	CreateGitHandler(repo string) (Git, error)
+	ReadExistingPath(repo string) (Git, error)
+
+	ReleaseLock(path string)
 }
 
-type GitHandlerGeneratorImpl struct{}
+type GitHandlerGeneratorImpl struct {
+	// TODO: add mutex to lock paths so only one workflow per path and others wait
+	path        string
+	org, branch string
+	git_author  string
+	email       string
 
-func (s *GitHandlerGeneratorImpl) CreateGitHandler(git_author, email, prj_name string) (Git, error) {
-	gitPath, err := os.MkdirTemp("", prj_name)
-	if err != nil {
-		return nil, fmt.Errorf("Cannot create temp dir: %w", err)
-	}
-
-	if err = os.Chmod(gitPath, 0700); err != nil {
-		return nil, fmt.Errorf("Cannot fix permissions of temp dir: %w", err)
-	}
-
-	return s.ReadExistingPath(git_author, email, gitPath)
+	lock_lock sync.Mutex
+	lock      map[string]sync.Mutex
 }
 
-func (*GitHandlerGeneratorImpl) ReadExistingPath(git_author, email, gitPath string) (Git, error) {
+func AllocateGitWorkTree(basePath, org, branch, gitAuthor, email string) (GitHandlerGenerator, error) {
+	if fi, err := os.Stat(basePath); err != nil || !fi.IsDir() {
+		return nil, fmt.Errorf("Git basepath not a valid directory: %s %w", basePath, err)
+	}
+
+	path := path.Join(basePath, org, branch)
+	if fi, err := os.Stat(path); err != nil {
+		if os.IsNotExist(err) {
+			if err = os.MkdirAll(path, 0o700); err != nil {
+				return nil, fmt.Errorf("Cannot create git directory structure: %s: %w", path, err)
+			}
+		} else {
+			return nil, fmt.Errorf("Error checking git directory strcture: %s: %w", path, err)
+		}
+	} else if !fi.IsDir() {
+		return nil, fmt.Errorf("Invalid git directory structure: %s != directory", path)
+	}
+
+	return &GitHandlerGeneratorImpl{
+		path:       basePath,
+		org:        org,
+		branch:     branch,
+		git_author: gitAuthor,
+		email:      email,
+
+		lock:       make(map[string]sync.Mutex),
+	}, nil
+}
+
+func (s *GitHandlerGeneratorImpl) CreateGitHandler(repoName string) (Git, error) {
+
+	path := path.Join(s.path, repoName)
+	if err := os.Mkdir(path, 0o777); err != nil {
+		return nil, err
+	}
+
+	return s.ReadExistingPath(repoName)
+}
+
+func (s *GitHandlerGeneratorImpl) ReadExistingPath(repo string) (Git, error) {
 	git := &GitHandlerImpl{
-		GitCommiter: git_author,
-		GitPath:     gitPath,
+		GitCommiter: s.git_author,
+		GitEmail:    s.email,
+		GitPath:     path.Join(s.path, s.org, s.branch, repo),
 	}
 
 	return git, nil
 }
 
+func (s *GitHandlerGeneratorImpl) ReleaseLock(repo string) {
+
+}
+
 //func (h *GitHandler) ProcessBranchList() []string {
 //	if h.HasError() {
 //		return make([]string, 0)
@@ -148,12 +196,8 @@ func (e *GitHandlerImpl) GitBranchHead(gitDir, branchName string) (string, error
 	return strings.TrimSpace(id), nil
 }
 
-func (e *GitHandlerImpl) Close() error {
-	if err := os.RemoveAll(e.GitPath); err != nil {
-		return err
-	}
-	e.GitPath = ""
-	return nil
+func (e *GitHandlerImpl) Close() {
+	e.lock.ReleaseLock(e.GitPath)
 }
 
 type writeFunc func(data []byte) (int, error)