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memory.go
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memory.go
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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.
package memory
import (
"context"
"sync"
ctxpkg "github.com/cs3org/reva/v2/pkg/ctx"
"github.com/cs3org/reva/v2/pkg/errtypes"
"github.com/cs3org/reva/v2/pkg/preferences"
"github.com/cs3org/reva/v2/pkg/preferences/registry"
)
func init() {
registry.Register("memory", New)
}
type mgr struct {
sync.RWMutex
keys map[string]map[string]string
}
// New returns an instance of the in-memory preferences manager.
func New(m map[string]interface{}) (preferences.Manager, error) {
return &mgr{keys: make(map[string]map[string]string)}, nil
}
func (m *mgr) SetKey(ctx context.Context, key, namespace, value string) error {
u, ok := ctxpkg.ContextGetUser(ctx)
if !ok {
return errtypes.UserRequired("preferences: error getting user from ctx")
}
m.Lock()
defer m.Unlock()
userKey := u.Id.OpaqueId
if len(m.keys[userKey]) == 0 {
m.keys[userKey] = map[string]string{key: value}
} else {
m.keys[userKey][key] = value
}
return nil
}
func (m *mgr) GetKey(ctx context.Context, key, namespace string) (string, error) {
u, ok := ctxpkg.ContextGetUser(ctx)
if !ok {
return "", errtypes.UserRequired("preferences: error getting user from ctx")
}
m.RLock()
defer m.RUnlock()
userKey := u.Id.OpaqueId
if len(m.keys[userKey]) != 0 {
if value, ok := m.keys[userKey][key]; ok {
return value, nil
}
}
return "", errtypes.NotFound("preferences: key not found")
}