func (u GopathUpdater) Update(importPathPattern string) error {
// TODO: This uses a legacy gist7802150 caching/cache-invalidation system. It's functional,
// but poorly documented, has known flaws (it does not allow concurrent updates),
// and very contributor-unfriendly (people don't like packages that have the word "gist" in
// the import path, even if's not actually a gist; which is understandable, since it's basically
// a package without a name that describes what it's for - that's something acceptable during
// rapid prototyping, but not for the finished product). Need to redesign it and replace with
// something better.
//
// First step might be to simply drop the caching behavior and hope the user doesn't try
// to manually refresh their browser page very often.
var updateErr = fmt.Errorf("import path pattern %q not found in GOPATH", importPathPattern)
gist7802150.MakeUpdated(u.GoPackages)
for _, goPackage := range u.GoPackages.List() {
if rootPath := util.GetRootPath(goPackage); rootPath != "" {
if gist7480523.GetRepoImportPathPattern(rootPath, goPackage.Bpkg.SrcRoot) == importPathPattern {
vcs := goPackage.Dir.Repo.RepoRoot.VCS
fmt.Printf("cd %s\n", rootPath)
fmt.Printf("%s %s", vcs.Cmd, vcs.DownloadCmd)
updateErr = vcs.Download(rootPath)
// Invalidate cache of the package's local revision, since it's expected to change after updating.
gist7802150.ExternallyUpdated(goPackage.Dir.Repo.VcsLocal.GetSources()[1].(gist7802150.DepNode2ManualI))
break
}
}
}
return updateErr
}
// Main index page handler.
func mainHandler(w http.ResponseWriter, req *http.Request) {
if err := loadTemplates(); err != nil {
fmt.Fprintln(w, "loadTemplates:", err)
return
}
//started := time.Now()
CommonHat(w)
defer CommonTail(w)
io.WriteString(w, `<div id="checking_updates"><h2 style="text-align: center;">Checking for updates...</h2></div>`)
io.WriteString(w, `<div id="no_updates" style="display: none;"><h2 style="text-align: center;">No Updates Available</h2></div>`)
defer io.WriteString(w, `<script>document.getElementById("checking_updates").style.display = "none";</script>`)
flusher := w.(http.Flusher)
flusher.Flush()
notifier := w.(http.CloseNotifier)
go func() {
<-notifier.CloseNotify()
//fmt.Println("Exiting, since the HTTP request was cancelled/interrupted.")
//close(updateRequestChan)
}()
//fmt.Printf("Part 1: %v ms.\n", time.Since(started).Seconds()*1000)
// rootPath -> []*gist7480523.GoPackage
var goPackagesInRepo = make(map[string][]*gist7480523.GoPackage)
gist7802150.MakeUpdated(goPackages)
//fmt.Printf("Part 1b: %v ms.\n", time.Since(started).Seconds()*1000)
if false {
for _, goPackage := range goPackages.List() {
if rootPath := util.GetRootPath(goPackage); rootPath != "" {
goPackagesInRepo[rootPath] = append(goPackagesInRepo[rootPath], goPackage)
}
}
} else {
inChan := make(chan interface{})
go func() { // This needs to happen in the background because sending input will be blocked on reading output.
for _, goPackage := range goPackages.List() {
inChan <- goPackage
}
close(inChan)
}()
reduceFunc := func(in interface{}) interface{} {
goPackage := in.(*gist7480523.GoPackage)
if rootPath := util.GetRootPath(goPackage); rootPath != "" {
return gist7480523.NewGoPackageRepo(rootPath, []*gist7480523.GoPackage{goPackage})
}
return nil
}
outChan := gist7651991.GoReduce(inChan, 64, reduceFunc)
for out := range outChan {
repo := out.(gist7480523.GoPackageRepo)
goPackagesInRepo[repo.RootPath()] = append(goPackagesInRepo[repo.RootPath()], repo.GoPackages()[0])
}
}
//goon.DumpExpr(len(goPackages.List()))
//goon.DumpExpr(len(goPackagesInRepo))
//fmt.Printf("Part 2: %v ms.\n", time.Since(started).Seconds()*1000)
updatesAvailable := 0
inChan := make(chan interface{})
go func() { // This needs to happen in the background because sending input will be blocked on reading output.
for rootPath, goPackages := range goPackagesInRepo {
inChan <- gist7480523.NewGoPackageRepo(rootPath, goPackages)
}
close(inChan)
}()
reduceFunc := func(in interface{}) interface{} {
repo := in.(gist7480523.GoPackageRepo)
goPackage := repo.GoPackages()[0]
goPackage.UpdateVcsFields()
if !shouldPresentUpdate(goPackage) {
return nil
}
repoPresenter := presenter.New(&repo)
return repoPresenter
}
outChan := gist7651991.GoReduce(inChan, 8, reduceFunc)
for out := range outChan {
//started2 := time.Now()
repoPresenter := out.(presenter.Presenter)
updatesAvailable++
WriteRepoHtml(w, repoPresenter)
flusher.Flush()
//fmt.Printf("Part 2b: %v ms.\n", time.Since(started2).Seconds()*1000)
/*log.Println("WriteRepoHtml")
goon.DumpExpr(repoPresenter.Repo().ImportPathPattern())
goon.DumpExpr(repoPresenter.Repo().ImportPaths())
goon.DumpExpr(len(repoPresenter.Repo().GoPackages()))
goon.DumpExpr(repoPresenter.Repo().GoPackages()[0].Bpkg.ImportPath)
goon.DumpExpr(repoPresenter.Repo().GoPackages()[0].Dir.Repo.VcsLocal.LocalRev)
goon.DumpExpr(repoPresenter.Repo().GoPackages()[0].Dir.Repo.VcsRemote.RemoteRev)
goon.DumpExpr(repoPresenter.HomePage())
goon.DumpExpr(repoPresenter.Image())
var changes []presenter.Change
if changesChan := repoPresenter.Changes(); changesChan != nil {
for c := range changesChan {
changes = append(changes, c)
}
}
goon.DumpExpr(changes)*/
}
if updatesAvailable == 0 {
io.WriteString(w, `<script>document.getElementById("no_updates").style.display = "";</script>`)
}
//fmt.Printf("Part 3: %v ms.\n", time.Since(started).Seconds()*1000)
}