Replacing a1-python with a1-go implementation

[ric-plt/a1.git] / pkg / policy / policyManager.go

diff --git a/pkg/policy/policyManager.go b/pkg/policy/policyManager.go
new file mode 100644 (file)
index 0000000..15f325b
--- /dev/null
+++ b/pkg/policy/policyManager.go
@@ -0,0 +1,141 @@
+/*
+==================================================================================
+  Copyright (c) 2022 Samsung
+
+   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.
+
+   This source code is part of the near-RT RIC (RAN Intelligent Controller)
+   platform project (RICP).
+==================================================================================
+*/
+
+package policy
+
+import (
+       "errors"
+       "fmt"
+       "strconv"
+       "strings"
+
+       "gerrit.o-ran-sc.org/r/ric-plt/a1/pkg/a1"
+       "gerrit.o-ran-sc.org/r/ric-plt/a1/pkg/models"
+       "gerrit.o-ran-sc.org/r/ric-plt/sdlgo"
+)
+
+var policyTypeNotFoundError = errors.New("Policy Type Not Found")
+var policyInstanceNotFoundError = errors.New("Policy Instance Not Found")
+
+const (
+       a1HandlerPrefix  = "a1.policy_handler."
+       a1PolicyPrefix   = "a1.policy_type."
+       a1MediatorNs     = "A1m_ns"
+       a1InstancePrefix = "a1.policy_instance."
+)
+
+func NewPolicyManager(sdl *sdlgo.SyncStorage) *PolicyManager {
+       return createPolicyManager(sdl)
+}
+
+func createPolicyManager(sdlInst iSdl) *PolicyManager {
+       pm := &PolicyManager{
+               db: sdlInst,
+       }
+       return pm
+}
+func (pm *PolicyManager) SetPolicyInstanceStatus(policyTypeId int, policyInstanceID int, status string) error {
+       a1.Logger.Debug("message recieved for %d and %d", policyTypeId, policyInstanceID)
+       instancehandlerKey := a1HandlerPrefix + strconv.FormatInt((int64(policyTypeId)), 10) + "." + strconv.FormatInt((int64(policyInstanceID)), 10)
+       err := pm.db.Set(a1MediatorNs, instancehandlerKey, status)
+       if err != nil {
+               a1.Logger.Error("error1 :%+v", err)
+               return err
+       }
+       return nil
+}
+
+func (im *PolicyManager) GetAllPolicyInstance(policyTypeId int) ([]models.PolicyInstanceID, error) {
+       a1.Logger.Debug("GetAllPolicyInstance")
+       var policyTypeInstances = []models.PolicyInstanceID{}
+
+       keys, err := im.db.GetAll("A1m_ns")
+
+       if err != nil {
+               a1.Logger.Error("error in retrieving policy. err: %v", err)
+               return policyTypeInstances, err
+       }
+       a1.Logger.Debug("keys : %+v", keys)
+       typekey := a1InstancePrefix + strconv.FormatInt((int64(policyTypeId)), 10) + "."
+
+       for _, key := range keys {
+               if strings.HasPrefix(strings.TrimLeft(key, " "), typekey) {
+                       pti := strings.Split(strings.Trim(key, " "), typekey)[1]
+                       a1.Logger.Debug("pti %+v", pti)
+                       policyTypeInstances = append(policyTypeInstances, models.PolicyInstanceID(pti))
+               }
+       }
+
+       if len(policyTypeInstances) == 0 {
+               a1.Logger.Debug("policy instance Not Present  ")
+               return policyTypeInstances, policyInstanceNotFoundError
+       }
+
+       a1.Logger.Debug("return : %+v", policyTypeInstances)
+       return policyTypeInstances, nil
+}
+
+func (im *PolicyManager) GetPolicyInstance(policyTypeId models.PolicyTypeID, policyInstanceID models.PolicyInstanceID) (interface{}, error) {
+       a1.Logger.Debug("GetPolicyInstance1")
+
+       var keys [1]string
+
+       typekey := a1PolicyPrefix + strconv.FormatInt((int64(policyTypeId)), 10)
+       keys[0] = typekey
+
+       a1.Logger.Debug("key1 : %+v", typekey)
+
+       valmap, err := im.db.Get(a1MediatorNs, keys[:])
+       if len(valmap) == 0 {
+               a1.Logger.Debug("policy type Not Present for policyid : %v", policyTypeId)
+               return nil, policyTypeNotFoundError
+       }
+
+       if err != nil {
+               a1.Logger.Error("error in retrieving policy type. err: %v", err)
+               return nil, err
+       }
+
+       if valmap[typekey] == nil {
+               a1.Logger.Debug("policy type Not Present for policyid : %v", policyTypeId)
+               return nil, policyTypeNotFoundError
+       }
+
+       a1.Logger.Debug("keysmap : %+v", valmap[typekey])
+
+       instancekey := a1InstancePrefix + strconv.FormatInt((int64(policyTypeId)), 10) + "." + string(policyInstanceID)
+       a1.Logger.Debug("key2 : %+v", instancekey)
+       keys[0] = instancekey
+       instanceMap, err := im.db.Get(a1MediatorNs, keys[:])
+       if err != nil {
+               a1.Logger.Error("policy instance error : %v", err)
+               return nil, err
+       }
+       a1.Logger.Debug("policyinstancetype map : %+v", instanceMap)
+
+       if instanceMap[instancekey] == nil {
+               a1.Logger.Debug("policy instance Not Present for policyinstaneid : %v", policyInstanceID)
+               return nil, policyInstanceNotFoundError
+       }
+
+       valStr := fmt.Sprint(instanceMap[instancekey])
+       return valStr, nil
+}