func newQuadStore(path string, options graph.Options) (graph.QuadStore, error) {
var qs QuadStore
var err error
qs.path = path
cacheSize := DefaultCacheSize
val, ok, err := options.IntKey("cache_size_mb")
if err != nil {
return nil, err
} else if ok {
cacheSize = val
}
qs.dbOpts = &opt.Options{
BlockCacheCapacity: cacheSize * opt.MiB,
}
qs.dbOpts.ErrorIfMissing = true
writeBufferSize := DefaultWriteBufferSize
val, ok, err = options.IntKey("writeBufferSize")
if err != nil {
return nil, err
} else if ok {
writeBufferSize = val
}
qs.dbOpts.WriteBuffer = writeBufferSize * opt.MiB
qs.writeopts = &opt.WriteOptions{
Sync: false,
}
qs.readopts = &opt.ReadOptions{}
db, err := leveldb.OpenFile(qs.path, qs.dbOpts)
if err != nil {
glog.Errorln("Error, could not open! ", err)
return nil, err
}
qs.db = db
glog.Infoln(qs.GetStats())
err = qs.getMetadata()
if err != nil {
return nil, err
}
return &qs, nil
}
