func (depot *Depot) BuildDat(dat *types.Dat, outpath string, numSubworkers int, deduper dedup.Deduper) (bool, error) {
datPath := filepath.Join(outpath, dat.Name)
err := os.Mkdir(datPath, 0777)
if err != nil {
return false, err
}
fixDat := new(types.Dat)
fixDat.FixDat = true
fixDat.Name = "fix_" + dat.Name
fixDat.Description = dat.Description
fixDat.Path = dat.Path
fixDat.UnzipGames = dat.UnzipGames
wc := make(chan *types.Game)
erc := make(chan error)
closeC := make(chan bool)
mutex := new(sync.Mutex)
for i := 0; i < numSubworkers; i++ {
gb := new(gameBuilder)
gb.depot = depot
gb.wc = wc
gb.erc = erc
gb.mutex = mutex
gb.datPath = datPath
gb.fixDat = fixDat
gb.index = i
gb.deduper = deduper
gb.closeC = closeC
go gb.work()
}
var minionErr error
endLoop:
for _, game := range dat.Games {
select {
case wc <- game:
case err := <-erc:
minionErr = err
break endLoop
}
}
close(wc)
finishedSubworkers := 0
endLoop2:
for {
glog.V(4).Infof("builder master: finished so far %d", finishedSubworkers)
select {
case <-closeC:
glog.V(4).Infof("builder master: finished another subworker")
finishedSubworkers++
if finishedSubworkers == numSubworkers {
break endLoop2
}
case err := <-erc:
glog.V(4).Infof("builder master: minion error")
minionErr = err
}
}
if minionErr != nil {
return false, minionErr
}
if len(fixDat.Games) > 0 {
fixDatPath := filepath.Join(outpath, fixPrefix+dat.Name+datSuffix)
fixFile, err := os.Create(fixDatPath)
if err != nil {
return false, err
}
defer fixFile.Close()
fixWriter := bufio.NewWriter(fixFile)
defer fixWriter.Flush()
err = types.ComposeCompliantDat(fixDat, fixWriter)
if err != nil {
return false, err
}
}
return len(fixDat.Games) > 0, nil
}
