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Make ocs resource info cache interoperable across drivers (#2232)
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| Enhancement: Make ocs resource info cache interoperable across drivers | ||
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| https://github.com/cs3org/reva/pull/2232 |
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| // Copyright 2018-2021 CERN | ||
| // | ||
| // 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. | ||
| // | ||
| // In applying this license, CERN does not waive the privileges and immunities | ||
| // granted to it by virtue of its status as an Intergovernmental Organization | ||
| // or submit itself to any jurisdiction. | ||
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| package memory | ||
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| import ( | ||
| "time" | ||
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| "github.com/bluele/gcache" | ||
| provider "github.com/cs3org/go-cs3apis/cs3/storage/provider/v1beta1" | ||
| "github.com/cs3org/reva/pkg/share/cache" | ||
| "github.com/cs3org/reva/pkg/share/cache/registry" | ||
| "github.com/mitchellh/mapstructure" | ||
| "github.com/pkg/errors" | ||
| ) | ||
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| func init() { | ||
| registry.Register("memory", New) | ||
| } | ||
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| type config struct { | ||
| CacheSize int `mapstructure:"cache_size"` | ||
| } | ||
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| type manager struct { | ||
| cache gcache.Cache | ||
| } | ||
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| // New returns an implementation of a resource info cache that stores the objects in memory | ||
| func New(m map[string]interface{}) (cache.ResourceInfoCache, error) { | ||
| c := &config{} | ||
| if err := mapstructure.Decode(m, c); err != nil { | ||
| return nil, errors.Wrap(err, "error decoding conf") | ||
| } | ||
| if c.CacheSize == 0 { | ||
| c.CacheSize = 1000000 | ||
| } | ||
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| return &manager{ | ||
| cache: gcache.New(c.CacheSize).LFU().Build(), | ||
| }, nil | ||
| } | ||
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| func (m *manager) Get(key string) (*provider.ResourceInfo, error) { | ||
| infoIf, err := m.cache.Get(key) | ||
| if err != nil { | ||
| return nil, err | ||
| } | ||
| return infoIf.(*provider.ResourceInfo), nil | ||
| } | ||
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| func (m *manager) GetKeys(keys []string) ([]*provider.ResourceInfo, error) { | ||
| infos := make([]*provider.ResourceInfo, len(keys)) | ||
| for i, key := range keys { | ||
| if infoIf, err := m.cache.Get(key); err == nil { | ||
| infos[i] = infoIf.(*provider.ResourceInfo) | ||
| } | ||
| } | ||
| return infos, nil | ||
| } | ||
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| func (m *manager) Set(key string, info *provider.ResourceInfo) error { | ||
| return m.cache.Set(key, info) | ||
| } | ||
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| func (m *manager) SetWithExpire(key string, info *provider.ResourceInfo, expiration time.Duration) error { | ||
| return m.cache.SetWithExpire(key, info, expiration) | ||
| } |
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