X-Git-Url: https://gerrit.o-ran-sc.org/r/gitweb?a=blobdiff_plain;f=a1-go%2Fpkg%2Fresthooks%2Fresthooks.go;h=0c870f66576d2334fa72259c8a650a14ec0dc624;hb=327e01cb25524a380f1f1a75e7cbcc9fd81f4972;hp=54ca39d74ef4c125b7ecea62357ec64834e0cd1b;hpb=686447316fc67f7b1777d94c5e02293786cec98d;p=ric-plt%2Fa1.git

diff --git a/a1-go/pkg/resthooks/resthooks.go b/a1-go/pkg/resthooks/resthooks.go
index 54ca39d..0c870f6 100644
--- a/a1-go/pkg/resthooks/resthooks.go
+++ b/a1-go/pkg/resthooks/resthooks.go
@@ -26,33 +26,65 @@ import (
 	"fmt"
 	"strconv"
 	"strings"
+	"time"
 
 	"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/a1/pkg/rmr"
 	"gerrit.o-ran-sc.org/r/ric-plt/sdlgo"
+	"github.com/santhosh-tekuri/jsonschema/v5"
+	"gopkg.in/yaml.v2"
 )
 
 const (
-	a1PolicyPrefix = "a1.policy_type."
-	a1MediatorNs   = "A1m_ns"
+	a1PolicyPrefix           = "a1.policy_type."
+	a1MediatorNs             = "A1m_ns"
+	a1InstancePrefix         = "a1.policy_instance."
+	a1InstanceMetadataPrefix = "a1.policy_inst_metadata."
+	a1HandlerPrefix          = "a1.policy_handler."
 )
 
 var typeAlreadyError = errors.New("Policy Type already exists")
+var InstanceAlreadyError = errors.New("Policy Instance already exists")
 var typeMismatchError = errors.New("Policytype Mismatch")
+var invalidJsonSchema = errors.New("Invalid Json ")
+var policyInstanceNotFoundError = errors.New("Policy Instance Not Found")
+var policyTypeNotFoundError = errors.New("Policy Type Not Found")
+var policyTypeCanNotBeDeletedError = errors.New("tried to delete a type that isn't empty")
+
+func (rh *Resthook) CanPolicyTypeBeDeleted(err error) bool {
+	return err == policyTypeCanNotBeDeletedError
+}
+
+func (rh *Resthook) IsPolicyTypePresent(err error) bool {
+	return err == policyTypeNotFoundError
+}
+
+func (rh *Resthook) IsPolicyInstanceNotFound(err error) bool {
+	return err == policyInstanceNotFoundError
+}
 
 func (rh *Resthook) IsTypeAlready(err error) bool {
 	return err == typeAlreadyError
 }
+func (rh *Resthook) IsInstanceAlready(err error) bool {
+	return err == InstanceAlreadyError
+}
 func (rh *Resthook) IsTypeMismatch(err error) bool {
 	return err == typeMismatchError
 }
+
+func (rh *Resthook) IsValidJson(err error) bool {
+	return err == invalidJsonSchema
+}
 func NewResthook() *Resthook {
-	return createResthook(sdlgo.NewSyncStorage())
+	return createResthook(sdlgo.NewSyncStorage(), rmr.NewRMRSender())
 }
 
-func createResthook(sdlInst iSdl) *Resthook {
+func createResthook(sdlInst iSdl, rmrSenderInst rmr.IRmrSender) *Resthook {
 	return &Resthook{
-		db: sdlInst,
+		db:             sdlInst,
+		iRmrSenderInst: rmrSenderInst,
 	}
 }
 
@@ -93,7 +125,7 @@ func (rh *Resthook) GetPolicyType(policyTypeId models.PolicyTypeID) *models.Poli
 
 	valmap, err := rh.db.Get(a1MediatorNs, keys[:])
 
-	a1.Logger.Debug("policytype map : ", valmap)
+	a1.Logger.Debug("policytype map : %+v", valmap)
 
 	if len(valmap) == 0 {
 		a1.Logger.Error("policy type Not Present for policyid : %v", policyTypeId)
@@ -102,7 +134,7 @@ func (rh *Resthook) GetPolicyType(policyTypeId models.PolicyTypeID) *models.Poli
 
 	if err != nil {
 		a1.Logger.Error("error in retrieving policy type. err: %v", err)
-		return policytypeschema
+		return nil
 	}
 
 	if valmap[key] == nil {
@@ -119,10 +151,12 @@ func (rh *Resthook) GetPolicyType(policyTypeId models.PolicyTypeID) *models.Poli
 	valkey := "`" + valStr + "`"
 	valToUnmarshall, err := strconv.Unquote(valkey)
 	if err != nil {
-		panic(err)
+		a1.Logger.Error("unquote error : %+v", err)
+		return nil
 	}
 
-	a1.Logger.Debug("Policy type for %+v :  %+v", key, string(b))
+	a1.Logger.Debug("Policy type for %+v :  %+v", key, string(valToUnmarshall))
+
 	errunm := json.Unmarshal([]byte(valToUnmarshall), &item)
 
 	a1.Logger.Debug(" Unmarshalled json : %+v", (errunm))
@@ -155,3 +189,389 @@ func (rh *Resthook) CreatePolicyType(policyTypeId models.PolicyTypeID, httpreque
 	}
 	return nil
 }
+
+func toStringKeys(val interface{}) (interface{}, error) {
+	var err error
+	switch val := val.(type) {
+	case map[interface{}]interface{}:
+		m := make(map[string]interface{})
+		for k, v := range val {
+			k, ok := k.(string)
+			if !ok {
+				return nil, errors.New("found non-string key")
+			}
+			m[k], err = toStringKeys(v)
+			if err != nil {
+				return nil, err
+			}
+		}
+		return m, nil
+	case []interface{}:
+		var l = make([]interface{}, len(val))
+		for i, v := range val {
+			l[i], err = toStringKeys(v)
+			if err != nil {
+				return nil, err
+			}
+		}
+		return l, nil
+	default:
+		return val, nil
+	}
+}
+
+func validate(httpBodyString string, schemaString string) bool {
+	var m interface{}
+	err := yaml.Unmarshal([]byte(httpBodyString), &m)
+	if err != nil {
+		a1.Logger.Error("Unmarshal error : %+v", err)
+	}
+	m, err = toStringKeys(m)
+	if err != nil {
+		a1.Logger.Error("Conversion to string error : %+v", err)
+		return false
+	}
+	compiler := jsonschema.NewCompiler()
+	if err := compiler.AddResource("schema.json", strings.NewReader(schemaString)); err != nil {
+		a1.Logger.Error("string reader error : %+v", err)
+		return false
+	}
+	schema, err := compiler.Compile("schema.json")
+	if err != nil {
+		a1.Logger.Error("schema json compile error : %+v", err)
+		return false
+	}
+	if err := schema.Validate(m); err != nil {
+		a1.Logger.Error("schema validation error : %+v", err)
+		return false
+	}
+	a1.Logger.Debug("validation successfull")
+	return true
+}
+
+func (rh *Resthook) storePolicyInstance(policyTypeId models.PolicyTypeID, policyInstanceID models.PolicyInstanceID, httpBody interface{}) (string, error) {
+	var keys [1]string
+	operation := "CREATE"
+	typekey := a1PolicyPrefix + strconv.FormatInt((int64(policyTypeId)), 10)
+	keys[0] = typekey
+
+	a1.Logger.Debug("key1 : %+v", typekey)
+
+	valmap, err := rh.db.Get(a1MediatorNs, keys[:])
+	if err != nil {
+		a1.Logger.Error("policy type error : %+v", err)
+	}
+	a1.Logger.Debug("policytype map : %+v", valmap)
+	if valmap[typekey] == nil {
+		a1.Logger.Error("policy type Not Present for policyid : %v", policyTypeId)
+		return operation, policyTypeNotFoundError
+	}
+	// TODO : rmr creation_timestamp := time.Now() // will be needed for rmr to notify the creation of instance
+
+	instancekey := a1InstancePrefix + strconv.FormatInt((int64(policyTypeId)), 10) + "." + string(policyInstanceID)
+	keys[0] = typekey
+	instanceMap, err := rh.db.Get(a1MediatorNs, keys[:])
+	if err != nil {
+		a1.Logger.Error("policy type error : %v", err)
+	}
+	a1.Logger.Debug("policyinstancetype map : %+v", instanceMap)
+
+	if instanceMap[instancekey] != nil {
+		operation = "UPDATE"
+		a1.Logger.Debug("UPDATE")
+		data, _ := json.Marshal(httpBody)
+		a1.Logger.Debug("Marshaled String : %+v", string(data))
+		a1.Logger.Debug("key   : %+v", instancekey)
+		success, err1 := rh.db.SetIf(a1MediatorNs, instancekey, instanceMap[instancekey], string(data))
+		if err1 != nil {
+			a1.Logger.Error("error2 :%+v", err1)
+			return operation, err1
+		}
+		if !success {
+			a1.Logger.Debug("Policy instance %+v already exist", policyInstanceID)
+			return operation, InstanceAlreadyError
+		}
+	} else {
+		data, _ := json.Marshal(httpBody)
+		a1.Logger.Debug("Marshaled String : %+v", string(data))
+		a1.Logger.Debug("key   : %+v", instancekey)
+
+		var instance_map []interface{}
+		instance_map = append(instance_map, instancekey, string(data))
+		a1.Logger.Debug("policyinstancetype map : %+v", instance_map[1])
+		a1.Logger.Debug("policyinstancetype to create : %+v", instance_map)
+
+		err1 := rh.db.Set(a1MediatorNs, instancekey, string(data))
+		if err1 != nil {
+			a1.Logger.Error("error1 :%+v", err1)
+			return operation, err1
+		}
+	}
+	a1.Logger.Debug("Policy Instance created ")
+	return operation, nil
+}
+
+func (rh *Resthook) storePolicyInstanceMetadata(policyTypeId models.PolicyTypeID, policyInstanceID models.PolicyInstanceID) (bool, error) {
+
+	creation_timestamp := time.Now()
+	instanceMetadataKey := a1InstanceMetadataPrefix + strconv.FormatInt((int64(policyTypeId)), 10) + "." + string(policyInstanceID)
+
+	a1.Logger.Debug("key : %+v", instanceMetadataKey)
+
+	var metadatajson []interface{}
+	metadatajson = append(metadatajson, map[string]string{"created_at": creation_timestamp.Format("2006-01-02 15:04:05"), "has_been_deleted": "False"})
+	metadata, _ := json.Marshal(metadatajson)
+
+	a1.Logger.Debug("policyinstanceMetaData to create : %+v", string(metadata))
+
+	err := rh.db.Set(a1MediatorNs, instanceMetadataKey, string(metadata))
+
+	if err != nil {
+		a1.Logger.Error("error :%+v", err)
+		return false, err
+	}
+
+	a1.Logger.Debug("Policy Instance Meta Data created at :%+v", creation_timestamp)
+
+	return true, nil
+}
+
+func (rh *Resthook) CreatePolicyInstance(policyTypeId models.PolicyTypeID, policyInstanceID models.PolicyInstanceID, httpBody interface{}) error {
+	a1.Logger.Debug("CreatePolicyInstance function")
+	//  validate the PUT against the schema
+	var policyTypeSchema *models.PolicyTypeSchema
+	policyTypeSchema = rh.GetPolicyType(policyTypeId)
+	schemaStr, err := json.Marshal(policyTypeSchema.CreateSchema)
+	if err != nil {
+		a1.Logger.Error("Json Marshal error : %+v", err)
+		return err
+	}
+	a1.Logger.Debug("schema to validate %+v", string(schemaStr))
+	a1.Logger.Debug("httpbody to validate %+v", httpBody)
+	schemaString := fmt.Sprint(string(schemaStr))
+	httpBodyMarshal, err := json.Marshal(httpBody)
+	httpBodyString := string((httpBodyMarshal))
+	a1.Logger.Debug("schema to validate sprint  %+v", (schemaString))
+	a1.Logger.Debug("httpbody to validate sprint %+v", httpBodyString)
+	isvalid := validate(httpBodyString, schemaString)
+	if isvalid {
+		var operation string
+		operation, err = rh.storePolicyInstance(policyTypeId, policyInstanceID, httpBody)
+		if err != nil {
+			a1.Logger.Error("error :%+v", err)
+			return err
+		}
+		a1.Logger.Debug("policy instance :%+v", operation)
+		iscreated, errmetadata := rh.storePolicyInstanceMetadata(policyTypeId, policyInstanceID)
+		if errmetadata != nil {
+			a1.Logger.Error("error :%+v", errmetadata)
+			return errmetadata
+		}
+		if iscreated {
+			a1.Logger.Debug("policy instance metadata created")
+		}
+
+		message := rmr.Message{}
+		rmrMessage, err := message.PolicyMessage(strconv.FormatInt((int64(policyTypeId)), 10), string(policyInstanceID), httpBodyString, operation)
+		if err != nil {
+			a1.Logger.Error("error : %v", err)
+			return err
+		}
+		isSent := rh.iRmrSenderInst.RmrSendToXapp(rmrMessage)
+		if isSent {
+			a1.Logger.Debug("rmrSendToXapp : message sent")
+		} else {
+			a1.Logger.Debug("rmrSendToXapp : message not sent")
+		}
+
+	} else {
+		a1.Logger.Error("%+v", invalidJsonSchema)
+		return invalidJsonSchema
+	}
+
+	return nil
+}
+
+func (rh *Resthook) 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 := rh.db.Get(a1MediatorNs, keys[:])
+	if len(valmap) == 0 {
+		a1.Logger.Debug("policy type Not Present for policyid : %v", policyTypeId)
+		return "{}", policyTypeNotFoundError
+	}
+
+	if err != nil {
+		a1.Logger.Error("error in retrieving policy type. err: %v", err)
+		return "{}", err
+	}
+
+	if valmap[typekey] == nil {
+		a1.Logger.Debug("policy type Not Present for policyid : %v", policyTypeId)
+		return "{}", 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 := rh.db.Get(a1MediatorNs, keys[:])
+	if err != nil {
+		a1.Logger.Error("policy instance error : %v", err)
+	}
+	a1.Logger.Debug("policyinstancetype map : %+v", instanceMap)
+
+	if instanceMap[instancekey] == nil {
+		a1.Logger.Debug("policy instance Not Present for policyinstaneid : %v", policyInstanceID)
+		return "{}", policyInstanceNotFoundError
+	}
+
+	valStr := fmt.Sprint(instanceMap[instancekey])
+	return valStr, nil
+}
+
+func (rh *Resthook) GetAllPolicyInstance(policyTypeId models.PolicyTypeID) ([]models.PolicyInstanceID, error) {
+	a1.Logger.Debug("GetAllPolicyInstance")
+	var policyTypeInstances = []models.PolicyInstanceID{}
+
+	keys, err := rh.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  ")
+	}
+
+	a1.Logger.Debug("return : %+v", policyTypeInstances)
+	return policyTypeInstances, nil
+}
+
+func (rh *Resthook) DeletePolicyType(policyTypeId models.PolicyTypeID) error {
+	a1.Logger.Debug("DeletePolicyType")
+
+	policyinstances, err := rh.GetAllPolicyInstance(policyTypeId)
+	if err != nil {
+		a1.Logger.Error("error in retrieving policy. err: %v", err)
+		return err
+	}
+
+	var keys [1]string
+	key := a1PolicyPrefix + strconv.FormatInt((int64(policyTypeId)), 10)
+	keys[0] = key
+	if len(policyinstances) == 0 {
+		err := rh.db.Remove(a1MediatorNs, keys[:])
+		if err != nil {
+			a1.Logger.Error("error in deleting policy type err: %v", err)
+			return err
+		}
+	} else {
+		a1.Logger.Error("tried to delete a type that isn't empty")
+		return policyTypeCanNotBeDeletedError
+	}
+	return nil
+}
+
+func (rh *Resthook) typeValidity(policyTypeId models.PolicyTypeID) error {
+	var keys [1]string
+
+	typekey := a1PolicyPrefix + strconv.FormatInt((int64(policyTypeId)), 10)
+	keys[0] = typekey
+
+	a1.Logger.Debug("key1 : %+v", typekey)
+	valmap, err := rh.db.Get(a1MediatorNs, keys[:])
+	if err != nil {
+		a1.Logger.Error("error in retrieving policytype err: %v", err)
+		return err
+	}
+	if len(valmap) == 0 {
+		a1.Logger.Error("policy type Not Present for policyid : %v", policyTypeId)
+		return policyTypeNotFoundError
+	}
+}
+
+func (rh *Resthook) instanceValidity(policyTypeId models.PolicyTypeID, policyInstanceID models.PolicyInstanceID) error {
+	err := rh.typeValidity(policyTypeId)
+	if err != nil {
+		return err
+	}
+	policyTypeInstances, err := rh.GetPolicyInstance(policyTypeId, policyInstanceID)
+	if err != nil {
+		a1.Logger.Error("policy instance error : %v", err)
+		return err
+	}
+	if len(policyTypeInstances.(string)) == 0 {
+		a1.Logger.Debug("policy instance Not Present  ")
+		return policyInstanceNotFoundError
+	}
+}
+
+func (rh *Resthook) getMetaData(policyTypeId models.PolicyTypeID, policyInstanceID models.PolicyInstanceID) (map[string]interface{}, error) {
+	instanceMetadataKey := a1InstanceMetadataPrefix + strconv.FormatInt((int64(policyTypeId)), 10) + "." + string(policyInstanceID)
+	a1.Logger.Debug("instanceMetadata key : %+v", instanceMetadataKey)
+	var keys [1]string
+	keys[0] = instanceMetadataKey
+	instanceMetadataMap, err := rh.db.Get(a1MediatorNs, keys[:])
+	if err != nil {
+		a1.Logger.Error("policy instance error : %v", err)
+	}
+	a1.Logger.Debug("instanceMetadata map : %+v", instanceMetadataMap)
+	if instanceMetadataMap[instanceMetadataKey] == nil {
+		a1.Logger.Error("policy instance Not Present for policyinstaneid : %v", policyInstanceID)
+		return map[string]interface{}{}, policyInstanceNotFoundError
+	}
+	return instanceMetadataMap, nil
+}
+
+func (rh *Resthook) GetPolicyInstanceStatus(policyTypeId models.PolicyTypeID, policyInstanceID models.PolicyInstanceID) (*a1_mediator.A1ControllerGetPolicyInstanceStatusOKBody, error) {
+	err := rh.instanceValidity(policyTypeId, policyInstanceID)
+	if err != nil && err == policyInstanceNotFoundError || err == policyTypeNotFoundError {
+		policyInstanceStatus.InstanceStatus = "NOT IN EFFECT"
+		return &policyInstanceStatus, err
+	}
+	policyInstanceStatus := a1_mediator.A1ControllerGetPolicyInstanceStatusOKBody{}
+	metadata, err := rh.getMetaData(policyTypeId, policyInstanceID)
+	a1.Logger.Debug(" metadata %v", metadata)
+	if err != nil {
+		a1.Logger.Error("policy instance error : %v", err)
+		policyInstanceStatus.InstanceStatus = "NOT IN EFFECT"
+		return &policyInstanceStatus, err
+	}
+	jsonbody, err := json.Marshal(metadata)
+	if err != nil {
+		a1.Logger.Error("marshal error : %v", err)
+		return &policyInstanceStatus, err
+	}
+
+	if err := json.Unmarshal(jsonbody, &policyInstanceStatus); err != nil {
+		a1.Logger.Error("unmarshal error : %v", err)
+		//this error maps to 503 error but can be mapped to 500: internal error
+		return &policyInstanceStatus, err
+	}
+	if policyInstanceStatus.HasBeenDeleted == false {
+		policyInstanceStatus.InstanceStatus = "IN EFFECT"
+	} else {
+		policyInstanceStatus.InstanceStatus = "NOT IN EFFECT"
+	}
+	return &policyInstanceStatus, nil
+}