/
kms.go
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/
kms.go
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// Copyright (c) 2021 Terminus, Inc.
//
// 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 kms
import (
"context"
"fmt"
"sync"
"github.com/erda-project/erda/pkg/kms/kmstypes"
)
var (
mgr Manager
initOnce sync.Once
)
type Manager struct {
pluginFactory map[kmstypes.PluginKind]kmstypes.PluginCreateFn
plugins map[kmstypes.PluginKind]kmstypes.Plugin
storeFactory map[kmstypes.StoreKind]kmstypes.StoreCreateFn
stores map[kmstypes.StoreKind]kmstypes.Store
pluginCtx context.Context
storeCtx context.Context
}
func GetManager(ops ...Option) (*Manager, error) {
err := mgr.initialize(ops...)
if err != nil {
return nil, err
}
return &mgr, nil
}
type Option func(*Manager)
func WithPluginConfigs(configs map[string]string) Option {
return func(mgr *Manager) {
mgr.pluginCtx = context.WithValue(mgr.pluginCtx, kmstypes.CtxKeyConfigMap, configs)
}
}
func WithStoreConfigs(configs map[string]string) Option {
return func(mgr *Manager) {
mgr.storeCtx = context.WithValue(mgr.storeCtx, kmstypes.CtxKeyConfigMap, configs)
}
}
func (m *Manager) initialize(ops ...Option) error {
initOnce.Do(func() {
m.pluginCtx = context.Background()
m.storeCtx = context.Background()
// apply options
for _, op := range ops {
op(m)
}
// plugin
m.pluginFactory = kmstypes.PluginFactory
m.plugins = make(map[kmstypes.PluginKind]kmstypes.Plugin)
for kind, createFn := range m.pluginFactory {
m.plugins[kind] = createFn(m.pluginCtx)
}
// store
m.storeFactory = kmstypes.StoreFactory
m.stores = make(map[kmstypes.StoreKind]kmstypes.Store)
for kind, createFn := range m.storeFactory {
m.stores[kind] = createFn(m.storeCtx)
}
})
return nil
}
func (m *Manager) GetPlugin(pluginKind kmstypes.PluginKind, storeKind kmstypes.StoreKind) (kmstypes.Plugin, error) {
// store
store, err := m.GetStore(storeKind)
if err != nil {
return nil, err
}
// plugin
plugin, ok := m.plugins[pluginKind]
if !ok || plugin == nil {
return nil, fmt.Errorf("not found plugin kind: %s", pluginKind)
}
plugin.SetStore(store)
return plugin, nil
}
func (m *Manager) GetStore(storeKind kmstypes.StoreKind) (kmstypes.Store, error) {
store, ok := m.stores[storeKind]
if !ok || store == nil {
return nil, fmt.Errorf("not found store kind: %s", storeKind)
}
return store, nil
}