func configFrom(file string) *config.Config {
// Find the file...
if file != "" {
if _, err := os.Stat(file); os.IsNotExist(err) {
glog.Fatalln("Cannot find specified configuration file", file, ", aborting.")
}
} 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 == "" {
glog.Infoln("Couldn't find a config file in either $CAYLEY_CFG or /etc/cayley.cfg. Going by flag defaults only.")
}
cfg, err := config.Load(file)
if err != nil {
glog.Fatalln(err)
}
if cfg.DatabasePath == "" {
cfg.DatabasePath = *databasePath
}
if cfg.DatabaseType == "" {
cfg.DatabaseType = *databaseBackend
}
return cfg
}
func init() {
glog.SetToStderr(true)
cfg, err := configFrom("cayley_appengine.cfg")
if err != nil {
glog.Fatalln("Error loading config:", err)
}
handle, err := db.Open(cfg)
if err != nil {
glog.Fatalln("Error opening database:", err)
}
http.SetupRoutes(handle, cfg)
}
func ReadTriplesFromFile(c chan *graph.Triple, tripleFile string) {
f, err := os.Open(tripleFile)
if err != nil {
glog.Fatalln("Couldn't open file", tripleFile)
}
defer func() {
if err := f.Close(); err != nil {
glog.Fatalln(err)
}
}()
nquads.ReadNQuadsFromReader(c, f)
}
func ReadNQuadsFromReader(c chan *graph.Triple, reader io.Reader) {
bf := bufio.NewReader(reader)
nTriples := 0
line := ""
for {
l, pre, err := bf.ReadLine()
if err == io.EOF {
break
}
if err != nil {
glog.Fatalln("Something bad happened while reading file " + err.Error())
}
line += string(l)
if pre {
continue
}
triple := Parse(line)
line = ""
if triple != nil {
nTriples++
c <- triple
}
}
glog.Infoln("Read", nTriples, "triples")
close(c)
}
func ParseConfigFromFile(filename string) *CayleyConfig {
config := &CayleyConfig{}
if filename == "" {
return config
}
f, err := os.Open(filename)
if err != nil {
glog.Fatalln("Couldn't open config file", filename)
}
defer f.Close()
dec := json.NewDecoder(f)
err = dec.Decode(config)
if err != nil {
glog.Fatalln("Couldn't read config file:", err)
}
return config
}
func findAssetsPath() string {
if *assetsPath != "" {
if hasAssets(*assetsPath) {
return *assetsPath
}
glog.Fatalln("Cannot find assets at", *assetsPath, ".")
}
if hasAssets(".") {
return "."
}
gopathPath := os.ExpandEnv("$GOPATH/src/github.com/google/cayley")
if hasAssets(gopathPath) {
return gopathPath
}
glog.Fatalln("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")
}
func ParseConfigFromFlagsAndFile(fileFlag string) *Config {
// Find the file...
var trueFilename string
if fileFlag != "" {
if _, err := os.Stat(fileFlag); os.IsNotExist(err) {
glog.Fatalln("Cannot find specified configuration file", fileFlag, ", aborting.")
} else {
trueFilename = fileFlag
}
} else {
if _, err := os.Stat(os.Getenv("CAYLEY_CFG")); err == nil {
trueFilename = os.Getenv("CAYLEY_CFG")
} else {
if _, err := os.Stat("/etc/cayley.cfg"); err == nil {
trueFilename = "/etc/cayley.cfg"
}
}
}
if trueFilename == "" {
glog.Infoln("Couldn't find a config file in either $CAYLEY_CFG or /etc/cayley.cfg. Going by flag defaults only.")
}
config := ParseConfigFromFile(trueFilename)
if config.DatabasePath == "" {
config.DatabasePath = *databasePath
}
if config.DatabaseType == "" {
config.DatabaseType = *databaseBackend
}
if config.ReplicationType == "" {
config.ReplicationType = *replicationBackend
}
if config.ListenHost == "" {
config.ListenHost = *host
}
if config.ListenPort == "" {
config.ListenPort = *port
}
if config.Timeout == 0 {
config.Timeout = *timeout
}
if config.LoadSize == 0 {
config.LoadSize = *loadSize
}
config.ReadOnly = config.ReadOnly || *readOnly
return config
}
func (d OptionsDict) GetIntKey(key string) (int, bool) {
if val, ok := d[key]; ok {
switch vv := val.(type) {
case float64:
return int(vv), true
default:
glog.Fatalln("Invalid", key, "parameter type from config.")
}
}
return 0, false
}
func (d OptionsDict) GetStringKey(key string) (string, bool) {
if val, ok := d[key]; ok {
switch vv := val.(type) {
case string:
return vv, true
default:
glog.Fatalln("Invalid", key, "parameter type from config.")
}
}
return "", false
}
func (d Options) BoolKey(key string) (bool, bool) {
if val, ok := d[key]; ok {
switch vv := val.(type) {
case bool:
return vv, true
default:
glog.Fatalln("Invalid", key, "parameter type from config.")
}
}
return false, false
}
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 {
glog.Errorln(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
}
glog.Fatalln("what can do this here?", 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
}
func Load(ts graph.TripleStore, cfg *config.Config, path string) error {
f, err := os.Open(path)
if err != nil {
return fmt.Errorf("could not open file %q: %v", path, err)
}
defer f.Close()
r, err := decompressor(f)
if err != nil {
glog.Fatalln(err)
}
dec := cquads.NewDecoder(r)
bulker, canBulk := ts.(graph.BulkLoader)
if canBulk {
err = bulker.BulkLoad(dec)
if err == nil {
return nil
}
if err == graph.ErrCannotBulkLoad {
err = nil
}
}
if err != nil {
return err
}
block := make([]*quad.Quad, 0, cfg.LoadSize)
for {
t, err := dec.Unmarshal()
if err != nil {
if err == io.EOF {
break
}
return err
}
block = append(block, t)
if len(block) == cap(block) {
ts.AddTripleSet(block)
block = block[:0]
}
}
ts.AddTripleSet(block)
return nil
}
func main() {
// No command? It's time for usage.
if len(os.Args) == 1 {
Usage()
os.Exit(1)
}
cmd := os.Args[1]
var newargs []string
newargs = append(newargs, os.Args[0])
newargs = append(newargs, os.Args[2:]...)
os.Args = newargs
flag.Parse()
var buildString string
if VERSION != "" {
buildString = fmt.Sprint("Cayley ", VERSION, " built ", BUILD_DATE)
glog.Infoln(buildString)
}
cfg := config.ParseConfigFromFlagsAndFile(*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 (
ts graph.TripleStore
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, *tripleFile)
case "load":
ts, err = db.Open(cfg)
if err != nil {
break
}
err = db.Load(ts, cfg, *tripleFile)
if err != nil {
break
}
ts.Close()
case "repl":
ts, err = db.Open(cfg)
if err != nil {
break
}
err = db.Repl(ts, *queryLanguage, cfg)
if err != nil {
break
}
ts.Close()
case "http":
ts, err = db.Open(cfg)
if err != nil {
break
}
http.Serve(ts, cfg)
ts.Close()
default:
fmt.Println("No command", cmd)
flag.Usage()
}
if err != nil {
glog.Fatalln(err)
}
}
func (it *AllIterator) Result() graph.Value {
if it.result == nil {
glog.Fatalln("result was nil", it)
}
return it.result
}
func main() {
// No command? It's time for usage.
if len(os.Args) == 1 {
Usage()
os.Exit(1)
}
cmd := os.Args[1]
newargs := make([]string, 0)
newargs = append(newargs, os.Args[0])
newargs = append(newargs, os.Args[2:]...)
os.Args = newargs
flag.Parse()
cfg := config.ParseConfigFromFlagsAndFile(*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 (
ts graph.TripleStore
err error
)
switch cmd {
case "init":
err = db.Init(cfg, *tripleFile)
case "load":
ts, err = db.Open(cfg)
if err != nil {
break
}
err = db.Load(ts, cfg, *tripleFile)
if err != nil {
break
}
ts.Close()
case "repl":
ts, err = db.Open(cfg)
if err != nil {
break
}
err = db.Repl(ts, *queryLanguage, cfg)
if err != nil {
break
}
ts.Close()
case "http":
ts, err = db.Open(cfg)
if err != nil {
break
}
http.Serve(ts, cfg)
ts.Close()
default:
fmt.Println("No command", cmd)
flag.Usage()
}
if err != nil {
glog.Fatalln(err)
}
}
