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main.go
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main.go
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package main
import (
"flag"
"log"
"net/http"
"os"
"os/signal"
"path"
"sync"
"syscall"
"time"
"github.com/blevesearch/bleve"
"github.com/miekg/xdoc/gitlabutil"
gu "github.com/miekg/xdoc/gitlabutil"
"github.com/xanzy/go-gitlab"
)
const DocDir = "docs"
var (
flgGroup = flag.String("group", "", "select only this group")
flgBase = flag.String("base", "", "base URL to add")
flgGitlab = flag.String("gitlab", "https://gitlab.com", "GitLab site")
flgDir = flag.String("dir", DocDir, "directory to use for documentation")
flgInt = flag.Duration("int", 10*time.Minute, "duration to sleep before restarting the download loop")
flgWorker = flag.Uint("worker", 10, "number of concurrent worker to download from gitlab")
)
func main() {
flag.Parse()
if *flgGroup == "" {
log.Fatal("-group need a value")
}
cl := gu.NewClient(*flgGitlab)
// all this group stuff is here to support multiple group, the POC won't do this (yet).
groups, err := gu.GetGroup(cl, *flgGroup)
if err != nil {
log.Fatal(err)
}
if len(groups) == 0 {
log.Fatal("No groups found")
}
names := make([]string, len(groups))
for i := range groups {
names[i] = groups[i].Name
}
log.Printf("Groups found: %q\n", names)
var group *gitlab.Group
for i := range groups {
if groups[i].Name == *flgGroup {
group = groups[i]
break
}
}
if group == nil {
log.Fatalf("Group %q not found", *flgGroup)
}
doc := New()
gid := group.ID
projs, err := gu.ListProjects(cl, gid)
if err != nil {
log.Fatal(err)
}
if err := doc.InsertProjects(cl, projs); err != nil {
log.Fatal(err)
}
println(doc.String())
r := doc.setup()
go func() {
srv := &http.Server{
Handler: r,
Addr: "127.0.0.1:8000",
WriteTimeout: 5 * time.Second,
ReadTimeout: 5 * time.Second,
}
log.Fatal(srv.ListenAndServe())
}()
tick := time.NewTicker(*flgInt)
sigs := make(chan os.Signal, 1)
signal.Notify(sigs, syscall.SIGINT, syscall.SIGTERM)
for {
select {
case <-tick.C:
projs, err := gu.ListProjects(cl, gid)
if err != nil {
log.Fatal(err)
}
// how do delete deleted projects? Separate list of names:deleted
if err := doc.InsertProjects(cl, projs); err != nil {
log.Fatal(err)
}
println(doc.String())
case <-sigs:
log.Println("Bye")
return
}
}
}
type downloadItem struct {
project *gitlab.Project
ref string
filename string
}
type downloadResult struct {
project *gitlab.Project
filename string
buf []byte
err error
}
func downloadWorker(cl *gitlab.Client, work <-chan downloadItem, result chan<- downloadResult) {
for w := range work {
buf, err := gitlabutil.Download(cl, w.project.ID, w.ref, w.filename)
result <- downloadResult{w.project, w.filename, buf, err}
}
log.Printf("Goroutine download worker shutting down")
}
func (d *Doc) InsertProjects(cl *gitlab.Client, projs []*gitlab.Project) error {
work := make(chan downloadItem, *flgWorker)
result := make(chan downloadResult, *flgWorker)
stop := make(chan struct{})
var wg sync.WaitGroup
for i := 0; i < int(*flgWorker); i++ {
go downloadWorker(cl, work, result)
}
go func() {
for {
select {
case r := <-result:
if r.err != nil {
log.Printf("Error when downloading %q: %s", r.filename, r.err)
continue
}
d.InsertFile(r.project, r.filename, r.buf)
wg.Done()
case <-stop:
return
}
}
}()
for _, p := range projs {
opts, _ := ParseOptions(cl, p)
d.Insert(p, opts)
files, _ := gu.ListDir(cl, p.ID, *flgDir)
wg.Add(len(files))
for i := range files {
log.Printf("Downloading %q %s\n", path.Join(p.WebURL, files[i].Path), files[i].Type)
work <- downloadItem{p, "master", files[i].Path}
}
}
close(work)
wg.Wait()
close(stop)
mapping := bleve.NewIndexMapping()
index, err := bleve.NewMemOnly(mapping)
if err != nil {
return err
}
log.Println("Created index, now indexing")
for _, g := range d.projects { // not thread safe
for k, buf := range g.Files {
if err := index.Index(k, string(buf)); err != nil {
return err
}
}
}
d.SetIndex(index)
count, err := index.DocCount()
if err != nil {
return err
}
log.Printf("Downloaded and indexed %d files, starting web server\n", count)
return nil
}