| // Copyright (C) 2015 The Android Open Source Project |
| // |
| // 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. |
| |
| package database |
| |
| import ( |
| "bytes" |
| "fmt" |
| |
| "android.googlesource.com/platform/tools/gpu/binary" |
| "android.googlesource.com/platform/tools/gpu/binary/cyclic" |
| "android.googlesource.com/platform/tools/gpu/binary/vle" |
| "android.googlesource.com/platform/tools/gpu/database/store" |
| "android.googlesource.com/platform/tools/gpu/log" |
| ) |
| |
| type inMemory struct { |
| links map[binary.ID]binary.ID |
| entries map[binary.ID]binary.Object |
| } |
| |
| // InMemory returns a partial implementation of Database, keeping all entries |
| // in-memory. |
| func InMemory() Database { |
| return &inMemory{ |
| links: make(map[binary.ID]binary.ID), |
| entries: make(map[binary.ID]binary.Object), |
| } |
| } |
| |
| func (d *inMemory) StoreLink(to, id binary.ID, _ log.Logger) error { |
| d.links[id] = to |
| return nil |
| } |
| |
| func (d *inMemory) StoreRequest(request binary.Object, _ log.Logger) (binary.ID, error) { |
| panic("StoreRequest() not supported by the InMemory database") |
| return binary.ID{}, nil |
| } |
| |
| func (d *inMemory) Store(o binary.Object, _ log.Logger) (binary.ID, error) { |
| id := hash(o) |
| d.entries[id] = o |
| return id, nil |
| } |
| |
| func (d *inMemory) Load(id binary.ID, l log.Logger, out binary.Object) error { |
| if link, found := d.links[id]; found { |
| return d.Load(link, l, out) |
| } |
| if entry, found := d.entries[id]; found { |
| store.CopyResource(out, entry) |
| return nil |
| } |
| return fmt.Errorf("Resource '%v' not found", id) |
| } |
| |
| func (d *inMemory) Contains(id binary.ID, _ log.Logger) bool { |
| if _, found := d.links[id]; found { |
| return true |
| } |
| if _, found := d.entries[id]; found { |
| return true |
| } |
| return false |
| } |
| |
| func (d *inMemory) Captures() (map[string]binary.ID, error) { |
| panic("Captures() not supported by the InMemory database") |
| } |
| |
| func (d *inMemory) Close() {} |
| |
| func hash(o binary.Object) binary.ID { |
| b := bytes.Buffer{} |
| e := cyclic.Encoder(vle.Writer(&b)) |
| if err := e.Value(o); err != nil { |
| panic(err) |
| } |
| return binary.NewID(b.Bytes()) |
| } |