Ejemplo n.º 1
0
func configFrom(file string) *config.Config {
	// Find the file...
	if file != "" {
		if _, err := os.Stat(file); os.IsNotExist(err) {
			clog.Fatalf("Cannot find specified configuration file '%s', aborting.", file)
		}
	} else if _, err := os.Stat(os.Getenv("CAYLEY_CFG")); err == nil {
		file = os.Getenv("CAYLEY_CFG")
	} else if _, err := os.Stat("/etc/cayley.cfg"); err == nil {
		file = "/etc/cayley.cfg"
	}
	if file == "" {
		clog.Infof("Couldn't find a config file in either $CAYLEY_CFG or /etc/cayley.cfg. Going by flag defaults only.")
	}
	cfg, err := config.Load(file)
	if err != nil {
		clog.Fatalf("%v", err)
	}
	if cfg.DatabasePath == "" {
		cfg.DatabasePath = *databasePath
	}

	if cfg.DatabaseType == "" {
		cfg.DatabaseType = *databaseBackend
	}
	return cfg
}
Ejemplo n.º 2
0
func init() {
	cfg, err := configFrom("cayley_appengine.cfg")
	if err != nil {
		clog.Fatalf("Error loading config: %v", err)
	}

	handle, err := db.Open(cfg)
	if err != nil {
		clog.Fatalf("Error opening database: %v", err)
	}
	http.SetupRoutes(handle, cfg)
}
Ejemplo n.º 3
0
func Serve(handle *graph.Handle, cfg *config.Config) {
	SetupRoutes(handle, cfg)
	clog.Infof("Cayley now listening on %s:%s\n", cfg.ListenHost, cfg.ListenPort)
	fmt.Printf("Cayley now listening on %s:%s\n", cfg.ListenHost, cfg.ListenPort)
	err := http.ListenAndServe(fmt.Sprintf("%s:%s", cfg.ListenHost, cfg.ListenPort), nil)
	if err != nil {
		clog.Fatalf("ListenAndServe: %v", err)
	}
}
Ejemplo n.º 4
0
func (api *API) ServeV1WriteNQuad(w http.ResponseWriter, r *http.Request, params httprouter.Params) int {
	if api.config.ReadOnly {
		return jsonResponse(w, 400, "Database is read-only.")
	}

	formFile, _, err := r.FormFile("NQuadFile")
	if err != nil {
		clog.Errorf("%v", err)
		return jsonResponse(w, 500, "Couldn't read file: "+err.Error())
	}
	defer formFile.Close()

	blockSize, blockErr := strconv.ParseInt(r.URL.Query().Get("block_size"), 10, 64)
	if blockErr != nil {
		blockSize = int64(api.config.LoadSize)
	}

	quadReader, err := internal.Decompressor(formFile)
	// TODO(kortschak) Make this configurable from the web UI.
	dec := cquads.NewDecoder(quadReader)

	h, err := api.GetHandleForRequest(r)
	if err != nil {
		return jsonResponse(w, 400, err)
	}

	var (
		n     int
		block = make([]quad.Quad, 0, blockSize)
	)
	for {
		t, err := dec.Unmarshal()
		if err != nil {
			if err == io.EOF {
				break
			}
			clog.Fatalf("what can do this here? %v", err) // FIXME(kortschak)
		}
		block = append(block, t)
		n++
		if len(block) == cap(block) {
			h.QuadWriter.AddQuadSet(block)
			block = block[:0]
		}
	}
	h.QuadWriter.AddQuadSet(block)

	fmt.Fprintf(w, "{\"result\": \"Successfully wrote %d quads.\"}", n)

	return 200
}
Ejemplo n.º 5
0
func findAssetsPath() string {
	if *assetsPath != "" {
		if hasAssets(*assetsPath) {
			return *assetsPath
		}
		clog.Fatalf("Cannot find assets at", *assetsPath, ".")
	}

	if hasAssets(".") {
		return "."
	}

	if hasAssets("..") {
		return ".."
	}

	gopathPath := os.ExpandEnv("$GOPATH/src/github.com/cayleygraph/cayley")
	if hasAssets(gopathPath) {
		return gopathPath
	}
	clog.Fatalf("Cannot find assets in any of the default search paths. Please run in the same directory, in a Go workspace, or set --assets .")
	panic("cannot reach")
}
Ejemplo n.º 6
0
func (it *AllIterator) Result() graph.Value {
	if it.result == nil {
		clog.Fatalf("result was nil %v", it)
	}
	return it.result
}
Ejemplo n.º 7
0
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()

	if *cpuprofile != "" {
		f, err := os.Create(*cpuprofile)
		if err != nil {
			clog.Fatalf("%v", err)
		}
		pprof.StartCPUProfile(f)
		defer pprof.StopCPUProfile()
	}

	var buildString string
	if Version != "" {
		buildString = fmt.Sprint("Cayley ", Version, " built ", BuildDate)
		clog.Infof(buildString)
	}

	cfg := configFrom(*configFile)

	if os.Getenv("GOMAXPROCS") == "" {
		runtime.GOMAXPROCS(runtime.NumCPU())
		clog.Infof("Setting GOMAXPROCS to %d", runtime.NumCPU())
	} else {
		clog.Infof("GOMAXPROCS currently %v -- not adjusting", os.Getenv("GOMAXPROCS"))
	}

	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 "dump":
		handle, err = db.Open(cfg)
		if err != nil {
			break
		}
		if !graph.IsPersistent(cfg.DatabaseType) {
			err = internal.Load(handle.QuadWriter, cfg, *quadFile, *quadType)
			if err != nil {
				break
			}
		}

		err = internal.Dump(handle.QuadStore, *dumpFile, *dumpType)
		if err != nil {
			break
		}

		handle.Close()

	case "repl":
		if *initOpt {
			err = db.Init(cfg)
			if err != nil && err != graph.ErrDatabaseExists {
				break
			}
		}
		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":
		if *initOpt {
			err = db.Init(cfg)
			if err != nil && err != graph.ErrDatabaseExists {
				break
			}
		}
		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 {
		clog.Errorf("%v", err)
	}
}