121 lines
3 KiB
Go
121 lines
3 KiB
Go
// Copyright 2014 The Cayley Authors. All rights reserved.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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// +build !appengine
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package main
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import (
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"flag"
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"fmt"
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"os"
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"runtime"
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"github.com/barakmich/glog"
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"github.com/google/cayley/config"
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"github.com/google/cayley/db"
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"github.com/google/cayley/graph"
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"github.com/google/cayley/http"
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// Load all supported backends.
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_ "github.com/google/cayley/graph/leveldb"
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_ "github.com/google/cayley/graph/memstore"
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_ "github.com/google/cayley/graph/mongo"
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)
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var tripleFile = flag.String("triples", "", "Triple File to load before going to REPL.")
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var cpuprofile = flag.String("prof", "", "Output profiling file.")
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var queryLanguage = flag.String("query_lang", "gremlin", "Use this parser as the query language.")
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var configFile = flag.String("config", "", "Path to an explicit configuration file.")
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func Usage() {
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fmt.Println("Cayley is a graph store and graph query layer.")
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fmt.Println("\nUsage:")
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fmt.Println(" cayley COMMAND [flags]")
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fmt.Println("\nCommands:")
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fmt.Println(" init\tCreate an empty database.")
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fmt.Println(" load\tBulk-load a triple file into the database.")
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fmt.Println(" http\tServe an HTTP endpoint on the given host and port.")
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fmt.Println(" repl\tDrop into a REPL of the given query language.")
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fmt.Println("\nFlags:")
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flag.Parse()
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flag.PrintDefaults()
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}
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func main() {
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// No command? It's time for usage.
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if len(os.Args) == 1 {
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Usage()
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os.Exit(1)
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}
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cmd := os.Args[1]
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newargs := make([]string, 0)
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newargs = append(newargs, os.Args[0])
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newargs = append(newargs, os.Args[2:]...)
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os.Args = newargs
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flag.Parse()
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cfg := config.ParseConfigFromFlagsAndFile(*configFile)
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if os.Getenv("GOMAXPROCS") == "" {
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runtime.GOMAXPROCS(runtime.NumCPU())
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glog.Infoln("Setting GOMAXPROCS to", runtime.NumCPU())
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} else {
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glog.Infoln("GOMAXPROCS currently", os.Getenv("GOMAXPROCS"), " -- not adjusting")
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}
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var (
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ts graph.TripleStore
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err error
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)
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switch cmd {
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case "init":
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err = db.Init(cfg, *tripleFile)
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case "load":
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ts, err = db.Open(cfg)
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if err != nil {
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break
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}
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err = db.Load(ts, cfg, *tripleFile)
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if err != nil {
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break
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}
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ts.Close()
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case "repl":
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ts, err = db.Open(cfg)
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if err != nil {
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break
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}
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err = db.Repl(ts, *queryLanguage, cfg)
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if err != nil {
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break
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}
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ts.Close()
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case "http":
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ts, err = db.Open(cfg)
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if err != nil {
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break
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}
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http.Serve(ts, cfg)
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ts.Close()
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default:
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fmt.Println("No command", cmd)
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flag.Usage()
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}
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if err != nil {
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glog.Fatalln(err)
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}
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}
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