mirror of
https://github.com/featurebasedb/featurebase.git
synced 2026-09-05 16:15:56 +00:00
100 lines
2.3 KiB
Go
100 lines
2.3 KiB
Go
// Copyright 2017 Pilosa Corp.
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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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package pilosa
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import (
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"fmt"
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"github.com/pilosa/pilosa/v2/rbf"
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"github.com/pilosa/pilosa/v2/roaring"
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)
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type Converter interface {
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Convert(index, field, view string, shard uint64, rb *roaring.Bitmap) error
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Shutdown()
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}
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type RBFConverter struct {
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Dbs map[string]*rbf.DB
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Base string
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}
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func (rbc *RBFConverter) GetOrCreateDB(index string, shard uint64) (*rbf.DB, error) {
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key := fmt.Sprintf("%s/%d", index, shard)
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db, found := rbc.Dbs[key]
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if found {
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return db, nil
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}
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path := rbc.Base + "/" + key
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db = rbf.NewDB(path)
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err := db.Open()
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if err != nil {
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return nil, err
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}
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rbc.Dbs[key] = db
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return db, nil
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}
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func (rbc *RBFConverter) Shutdown() {
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for key, db := range rbc.Dbs {
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fmt.Println("Shutdown", key)
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db.Close()
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}
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}
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func (rbc *RBFConverter) Convert(index, field, view string, shard uint64, rb *roaring.Bitmap) error {
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fmt.Println("CONVERT", index, field, view, shard)
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db, err := rbc.GetOrCreateDB(index, shard)
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if err != nil {
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return err
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}
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tx, err := db.Begin(writable)
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if err != nil {
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return err
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}
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defer tx.Rollback()
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name := fmt.Sprintf("%s/%s", field, view)
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err = tx.CreateBitmap(name)
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if err != nil {
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return err
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}
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_, err = tx.AddRoaring(name, rb)
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if err != nil {
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return err
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}
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return tx.Commit()
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}
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func (h *Holder) ConvertToRBF(c Converter) {
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/*
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for idxname, idx := range h.indexes {
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for fieldName, field := range idx.fields {
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for _, view := range field.views() {
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for shard, fragment := range view.fragments {
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panic("NEED bitmap from storage")
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junk := roaring.NewBitmap()
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err := c.Convert(idxname, fieldName, view.name, shard, junk)
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if err != nil {
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fmt.Println("ERR", err, fragment.shard) //just added shard for compile
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}
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}
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}
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}
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}
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c.Shutdown()
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*/
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}
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