func Init(cfg *config.Config) error {
if !graph.IsPersistent(cfg.DatabaseType) {
return fmt.Errorf("ignoring unproductive database initialization request: %v", ErrNotPersistent)
}
return graph.InitQuadStore(cfg.DatabaseType, cfg.DatabasePath, cfg.DatabaseOptions)
}
func deletePrepare(t testing.TB) {
var err error
deleteAndRecreate.Do(func() {
prepare(t)
if !graph.IsPersistent(cfg.DatabaseType) {
err = removeAll(handle.QuadWriter, cfg, "", "cquad")
if err != nil {
t.Fatalf("Failed to remove %q: %v", cfg.DatabasePath, err)
}
err = internal.Load(handle.QuadWriter, cfg, "", "cquad")
if err != nil {
t.Fatalf("Failed to load %q: %v", cfg.DatabasePath, err)
}
}
})
}
func prepare(t testing.TB) {
cfg.DatabaseType = *backend
switch *backend {
case "memstore":
cfg.DatabasePath = "../data/30kmoviedata.nq.gz"
case "leveldb", "bolt":
cfg.DatabasePath = "/tmp/cayley_test_" + *backend
cfg.DatabaseOptions = map[string]interface{}{
"nosync": true, // It's a test. If we need to load, do it fast.
}
case "mongo":
cfg.DatabasePath = "localhost:27017"
cfg.DatabaseOptions = map[string]interface{}{
"database_name": "cayley_test", // provide a default test database
}
default:
t.Fatalf("Untestable backend store %s", *backend)
}
var err error
create.Do(func() {
needsLoad := true
if graph.IsPersistent(cfg.DatabaseType) {
if _, err := os.Stat(cfg.DatabasePath); os.IsNotExist(err) {
err = db.Init(cfg)
if err != nil {
t.Fatalf("Could not initialize database: %v", err)
}
} else {
needsLoad = false
}
}
handle, err = db.Open(cfg)
if err != nil {
t.Fatalf("Failed to open %q: %v", cfg.DatabasePath, err)
}
if needsLoad {
err = internal.Load(handle.QuadWriter, cfg, "../data/30kmoviedata.nq.gz", "cquad")
if err != nil {
t.Fatalf("Failed to load %q: %v", cfg.DatabasePath, err)
}
}
})
}
func main() {
// No command? It's time for usage.
if len(os.Args) == 1 {
fmt.Fprintln(os.Stderr, "Cayley is a graph store and graph query layer.")
usage()
os.Exit(1)
}
cmd := os.Args[1]
os.Args = append(os.Args[:1], os.Args[2:]...)
flag.Parse()
var buildString string
if Version != "" {
buildString = fmt.Sprint("Cayley ", Version, " built ", BuildDate)
glog.Infoln(buildString)
}
cfg := configFrom(*configFile)
if os.Getenv("GOMAXPROCS") == "" {
runtime.GOMAXPROCS(runtime.NumCPU())
glog.Infoln("Setting GOMAXPROCS to", runtime.NumCPU())
} else {
glog.Infoln("GOMAXPROCS currently", os.Getenv("GOMAXPROCS"), " -- not adjusting")
}
var (
handle *graph.Handle
err error
)
switch cmd {
case "version":
if Version != "" {
fmt.Println(buildString)
} else {
fmt.Println("Cayley snapshot")
}
os.Exit(0)
case "init":
err = db.Init(cfg)
if err != nil {
break
}
if *quadFile != "" {
handle, err = db.Open(cfg)
if err != nil {
break
}
err = internal.Load(handle.QuadWriter, cfg, *quadFile, *quadType)
if err != nil {
break
}
handle.Close()
}
case "load":
handle, err = db.Open(cfg)
if err != nil {
break
}
err = internal.Load(handle.QuadWriter, cfg, *quadFile, *quadType)
if err != nil {
break
}
handle.Close()
case "repl":
handle, err = db.Open(cfg)
if err != nil {
break
}
if !graph.IsPersistent(cfg.DatabaseType) {
err = internal.Load(handle.QuadWriter, cfg, "", *quadType)
if err != nil {
break
}
}
err = db.Repl(handle, *queryLanguage, cfg)
handle.Close()
case "http":
handle, err = db.Open(cfg)
if err != nil {
break
}
if !graph.IsPersistent(cfg.DatabaseType) {
err = internal.Load(handle.QuadWriter, cfg, "", *quadType)
if err != nil {
break
}
}
http.Serve(handle, cfg)
handle.Close()
default:
fmt.Println("No command", cmd)
usage()
}
if err != nil {
glog.Errorln(err)
}
}