func (cb *Defn) applyVarsToField(desc, fieldName, fieldValue string) (string, error) {
t := template.New(fieldName)
t, err := t.Parse(fieldValue)
if err != nil {
return "", out.WrapErrf(err, 3004, "Parsing problem applying templates to:\n%v\n URI Template: %v", desc, fieldValue)
}
buf := new(bytes.Buffer)
err = t.Execute(buf, cb.Vars)
if err != nil {
return "", out.WrapErrf(err, 3005, "Template execute problem with codebase repo definition\n%v\n URI Template: %v", desc, fieldValue)
}
result := fmt.Sprintf("%s", buf)
return result, nil
}
// Read will, given an io.Reader, attempt to scan in the codebase contents
// and "fill out" the given Defn structure for you. What could
// go wrong? If anything a non-nil error is returned.
func (cb *Defn) Read(r io.Reader) error {
codebaseMap := make(map[string]interface{})
decJSON := json.NewDecoder(r)
err := decJSON.Decode(&codebaseMap)
if err != nil {
if serr, ok := err.(*json.SyntaxError); ok {
return out.WrapErrf(err, 3001, "Failed to decode codebase JSON (Bad Char Offset: %v)", serr.Offset)
}
return out.WrapErr(err, "Failed to decode codebase JSON file", 3001)
}
config := &mapstructure.DecoderConfig{
WeaklyTypedInput: true,
Result: cb,
}
decoder, err := mapstructure.NewDecoder(config)
if err != nil {
return out.WrapErr(err, "Failed to prepare codebase file decoder", 3002)
}
err = decoder.Decode(codebaseMap)
if err != nil {
return out.WrapErr(err, "Failed to decode codebase file contents", 3003)
}
// codebase definitions can be reduced in size if the person defining that
// file uses variables to identify common repo references and such, lets
// examine those vars and, if any, make sure we "expand" them so the codebase
// definition is complete. Write() will "smart" subtitute the vars back.
if err = cb.expandVarUse(); err != nil {
return err
}
return nil
}
// findGitDirs expects to be pointed at a git workspace, either
// bare or standard. It'll find the gitdir and worktree dirs
// and return them, if it fails it'll return non-nil err. Params:
// path (string): path to the git workspace
// Returns:
// gitDir (string): path to git metadata location
// workTreeDir (string): working tree, "" if bare clone
// err (error): a valid error if unable to find a git repo
func findGitDirs(path string) (string, string, error) {
gitDir := filepath.Join(path, ".git") // see if std git clone
var err error
var exists bool
if exists, err = dir.Exists(gitDir); exists && err == nil {
return gitDir, path, nil
}
gitRefsDir := filepath.Join(path, "refs")
if exists, err = dir.Exists(gitRefsDir); exists && err == nil {
gitConfigFile := filepath.Join(path, "config")
if exists, err = file.Exists(gitConfigFile); exists && err == nil {
return path, "", nil
}
}
if err == nil {
return "", "", out.WrapErrf(ErrNoExist, 4500, "Unable to find valid git clone under path: %s", path)
}
return "", "", out.WrapErrf(ErrNoExist, 4500, "Unable to find valid git clone under path: %s\n existence err: %s", path, err)
}
// BzrExists verifies the local repo or remote location is of the Bzr repo type,
// returns where it was found ("" if not found) and any error. If it does not
// exist a wrapped ErrNoExist error is returned (use out.IsError() to check)
func BzrExists(e Existence, l Location) (string, Resulter, error) {
results := newResults()
var err error
path := ""
if l == LocalPath {
if exists, err := dir.Exists(e.LocalRepoPath() + "/.bzr"); exists && err == nil {
return e.LocalRepoPath(), nil, nil
}
err = out.WrapErrf(ErrNoExist, 4505, "Local bzr location, \"%s\", does not exist, err: %s", e.LocalRepoPath(), err)
} else { // checking remote "URL" as well as possible for current VCS..
remote := e.Remote()
scheme := url.GetScheme(remote)
// if we have a scheme then just see if the repo exists...
if scheme != "" {
var result *Result
result, err = run(bzrTool, "info", remote)
results.add(result)
if err == nil {
path = remote
}
} else {
vcsSchemes := e.Schemes()
for _, scheme = range vcsSchemes {
var result *Result
result, err = run(bzrTool, "info", scheme+"://"+remote)
results.add(result)
if err == nil {
path = scheme + "://" + remote
break
}
}
}
if err == nil {
return path, results, nil
}
err = out.WrapErrf(ErrNoExist, 4506, "Remote bzr location, \"%s\", does not exist, err: %s", e.Remote(), err)
}
return path, results, err
}
// GitHookInstall is used to install a hook into a git clone, params:
// h (*GitHookMgr): the hook mgr structure (find location of repo/etc)
// path (string): where is the hook we wish to install?
// name (string): what is the "git name" for the hook?
// link (bool): is hook a symlink to hookPath, or full copy/install?
// Returns full path/name to git hook installed along w/any error seen
func GitHookInstall(h *GitHookMgr, path, name string, link bool) (string, error) {
repoPath, _, err := h.Exists(LocalPath)
hookInstallPath := ""
if err == nil && repoPath != "" { // if the local path exists...
hookInstallPath = filepath.Join(repoPath, ".git", "hooks", name)
if isBareRepo(repoPath) {
hookInstallPath = filepath.Join(repoPath, "hooks", name)
}
if there, err := file.Exists(hookInstallPath); err == nil && there {
err = os.Remove(hookInstallPath)
if err != nil {
return "", out.WrapErr(err, "Failed to remove previously installed hook", 4510)
}
}
if there, err := file.Exists(path); err != nil || !there {
if err != nil {
return "", out.WrapErr(err, "Hook install failed checking source hook existence", 4511)
}
return "", out.NewErrf(4512, "Hook install failed, hook source path does not exist:\n path: %s", path)
}
oldUmask := syscall.Umask(0)
defer syscall.Umask(oldUmask)
if link { // if symlink desired, try and create that
err = os.Symlink(path, hookInstallPath)
if err != nil {
err = out.WrapErrf(err, 4513, "Hook install failed, failed to set up symlink:\n linktgt: %s\n link: %s\n", path, hookInstallPath)
}
} else { // otherwise try and copy in the hook file
_, err = file.CopyFileSetPerms(path, hookInstallPath, 0775)
if err != nil {
err = out.WrapErrf(err, 4514, "Hook install failed, failed to copy hook file:\n hook source path %s\n hook install path: %s\n", path, hookInstallPath)
}
}
}
return hookInstallPath, err
}
// GitExists verifies the local repo or remote location is a Git repo,
// returns where it was found (or "" if not found), the results
// of any git cmds run (cmds and related output) and any error.
// Note that if no git cmds run then Resulter won't have any data
// (which occurs if the git repo is local). If the git repo does not
// exist a wrapped ErrNoExist is returned (use out.IsError() to check)
func GitExists(e Existence, l Location) (string, Resulter, error) {
results := newResults()
var err error
path := ""
if l == LocalPath {
_, _, err = findGitDirs(e.LocalRepoPath()) // clone? wrapped ErrNoExists if not
if err == nil {
return e.LocalRepoPath(), nil, nil // it's a local git clone, success
}
} else { // checking remote "URL" as well as possible for current VCS..
remote := e.Remote()
scheme := url.GetScheme(remote)
if scheme != "" { // if we have a scheme then see if the repo exists...
var result *Result
result, err = run(gitTool, "ls-remote", remote)
results.add(result)
if err == nil {
path = remote
}
} else {
vcsSchemes := e.Schemes()
for _, scheme = range vcsSchemes {
var result *Result
result, err = run(gitTool, "ls-remote", scheme+"://"+remote)
results.add(result)
if err == nil {
path = scheme + "://" + remote
break
}
}
}
if err == nil {
return path, results, nil
}
err = out.WrapErrf(ErrNoExist, 4501, "Remote git location does not exist: %s\n run err: %s", e.Remote(), err)
}
return path, results, err
}
