/* ================================================================================== Copyright (c) 2019 AT&T Intellectual Property. Copyright (c) 2019 Nokia 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 control import ( "fmt" "gerrit.o-ran-sc.org/r/ric-plt/xapp-frame/pkg/xapp" "sync" ) //----------------------------------------------------------------------------- // //----------------------------------------------------------------------------- type Registry struct { mutex sync.Mutex register map[uint16]*Subscription subIds []uint16 rtmgrClient *RtmgrClient } // This method should run as a constructor func (r *Registry) Initialize() { r.register = make(map[uint16]*Subscription) var i uint16 for i = 0; i < 65535; i++ { r.subIds = append(r.subIds, i+1) } } // Reserves and returns the next free sequence number func (r *Registry) ReserveSubscription(meid *xapp.RMRMeid) (*Subscription, error) { r.mutex.Lock() defer r.mutex.Unlock() if len(r.subIds) > 0 { sequenceNumber := r.subIds[0] r.subIds = r.subIds[1:] if _, ok := r.register[sequenceNumber]; ok == false { subs := &Subscription{ registry: r, Seq: sequenceNumber, Active: false, Meid: meid, Trans: nil, } r.register[sequenceNumber] = subs xapp.Logger.Info("Registry: Create %s", subs.String()) xapp.Logger.Debug("Registry: substable=%v", r.register) return subs, nil } } return nil, fmt.Errorf("Registry: Failed to reserves subscription") } func (r *Registry) GetSubscription(sn uint16) *Subscription { r.mutex.Lock() defer r.mutex.Unlock() if _, ok := r.register[sn]; ok { return r.register[sn] } return nil } func (r *Registry) DelSubscription(sn uint16) bool { r.mutex.Lock() defer r.mutex.Unlock() if _, ok := r.register[sn]; ok { subs := r.register[sn] xapp.Logger.Info("Registry: Delete %s", subs.String()) r.subIds = append(r.subIds, sn) delete(r.register, sn) xapp.Logger.Debug("Registry: substable=%v", r.register) return true } return false }