// readManifest implements the ReadManifest logic and provides an
// optional flag that can be used to fetch the latest manifest updates
// from the manifest repository.
func readManifest(ctx *tool.Context, update bool) (Hosts, Projects, Tools, Hooks, error) {
ctx.TimerPush("read manifest")
defer ctx.TimerPop()
if update {
manifestPath, err := ToAbs(".manifest")
if err != nil {
return nil, nil, nil, nil, err
}
project := Project{
Path: manifestPath,
Protocol: "git",
Revision: "HEAD",
RemoteBranch: "master",
}
if err := resetProject(ctx, project); err != nil {
return nil, nil, nil, nil, err
}
}
path, err := ResolveManifestPath(ctx.Manifest())
if err != nil {
return nil, nil, nil, nil, err
}
hosts, projects, tools, hooks, stack := Hosts{}, Projects{}, Tools{}, Hooks{}, map[string]struct{}{}
if err := loadManifest(ctx, path, hosts, projects, tools, hooks, stack); err != nil {
return nil, nil, nil, nil, err
}
return hosts, projects, tools, hooks, nil
}
func getManifest(ctx *tool.Context) string {
manifest := ctx.Manifest()
if manifest != "" {
return manifest
}
return defaultManifest
}
func updateProjects(ctx *tool.Context, remoteProjects Projects, gc bool) error {
ctx.TimerPush("update projects")
defer ctx.TimerPop()
scanMode := FastScan
if gc {
scanMode = FullScan
}
localProjects, err := LocalProjects(ctx, scanMode)
if err != nil {
return err
}
gitHost, gitHostErr := GitHost(ctx)
if gitHostErr == nil && googlesource.IsGoogleSourceHost(gitHost) {
// Attempt to get the repo statuses from remote so we can detect when a
// local project is already up-to-date.
if repoStatuses, err := googlesource.GetRepoStatuses(ctx, gitHost); err != nil {
// Log the error but don't fail.
fmt.Fprintf(ctx.Stderr(), "Error fetching repo statuses from remote: %v\n", err)
} else {
for name, rp := range remoteProjects {
status, ok := repoStatuses[rp.Name]
if !ok {
continue
}
masterRev, ok := status.Branches["master"]
if !ok || masterRev == "" {
continue
}
rp.Revision = masterRev
remoteProjects[name] = rp
}
}
}
ops, err := computeOperations(localProjects, remoteProjects, gc)
if err != nil {
return err
}
for _, op := range ops {
if err := op.Test(ctx); err != nil {
return err
}
}
failed := false
manifest := &Manifest{Label: ctx.Manifest()}
for _, op := range ops {
updateFn := func() error { return op.Run(ctx, manifest) }
// Always log the output of updateFn, irrespective of
// the value of the verbose flag.
opts := runutil.Opts{Verbose: true}
if err := ctx.Run().FunctionWithOpts(opts, updateFn, "%v", op); err != nil {
fmt.Fprintf(ctx.Stderr(), "%v\n", err)
failed = true
}
}
if failed {
return cmdline.ErrExitCode(2)
}
if err := writeCurrentManifest(ctx, manifest); err != nil {
return err
}
return nil
}