func convertPrograms(db data.Data) error {
log.Printf("Allocating %d goroutines", maxGoroutines)
var programs []model.AcademicProgram
programIds, err := db.GetProgramsList()
if err != nil {
log.Print(err)
return err
}
log.Printf("Fetched %d Program Ids to convert\n", len(programIds))
queue := make(chan string, len(programIds))
done := make(chan data.Program)
for i := 0; i < maxGoroutines; i += 1 {
go loadAndConvert(db, queue, done)
}
for _, programId := range programIds {
queue <- programId
}
//wait for goroutines to finish
for i := 0; i < len(programIds); i += 1 {
program := <-done
programs = append(programs, program.AcademicProgram)
}
log.Println("Converting program list")
list, err := convert.ConvertList(programs)
if err != nil {
log.Print(err)
return err
}
writeProgramList(list)
return nil
}
func loadAndConvert(data data.Data, programIds chan string, done chan data.Program) {
for {
select {
case programId := <-programIds:
log.Printf("%v", programId)
program, err := data.GetProgram(programId)
if err != nil {
log.Fatal(err)
return
}
conv, err := convert.Convert(program)
if err != nil {
log.Fatal(err)
}
out, err := json.Marshal(conv)
if err != nil {
log.Fatal(err)
}
persistToStorage(programId, out)
persistToStorage(conv.ProgramCode, out)
done <- program
}
}
}