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cayleyupgrade.go
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cayleyupgrade.go
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// Copyright 2015 The Cayley Authors. All rights reserved.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
// +build !appengine
package main
import (
"flag"
"fmt"
"os"
"github.com/cayleygraph/cayley/clog"
_ "github.com/cayleygraph/cayley/clog/glog"
"github.com/cayleygraph/cayley/graph"
"github.com/cayleygraph/cayley/internal/config"
// Load all supported backends.
_ "github.com/cayleygraph/cayley/graph/bolt"
_ "github.com/cayleygraph/cayley/graph/leveldb"
_ "github.com/cayleygraph/cayley/graph/memstore"
_ "github.com/cayleygraph/cayley/graph/mongo"
)
var (
configFile = flag.String("config", "", "Path to an explicit configuration file.")
databasePath = flag.String("dbpath", "/tmp/testdb", "Path to the database.")
databaseBackend = flag.String("db", "memstore", "Database Backend.")
)
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
}
func main() {
flag.Parse()
cfg := configFrom(*configFile)
err := graph.UpgradeQuadStore(cfg.DatabaseType, cfg.DatabasePath, nil)
if err != nil {
fmt.Fprintln(os.Stderr, err)
os.Exit(1)
}
}