Multiple E2T instance feature - Introduced APIs Delete E2T Instance and associate...
[ric-plt/rtmgr.git] / pkg / nbi / httprestful.go
index 8ceca1d..2e14690 100644 (file)
@@ -35,6 +35,7 @@ import (
        "encoding/json"
        "errors"
        "fmt"
+       "gerrit.o-ran-sc.org/r/ric-plt/xapp-frame/pkg/xapp"
        "github.com/go-openapi/loads"
        "github.com/go-openapi/runtime/middleware"
        "net/url"
@@ -48,6 +49,8 @@ import (
        "routing-manager/pkg/sdl"
        "strconv"
        "time"
+       "sync"
+       "strings"
 )
 
 //var myClient = &http.Client{Timeout: 1 * time.Second}
@@ -56,6 +59,7 @@ type HttpRestful struct {
        Engine
        LaunchRest                   LaunchRestHandler
        RecvXappCallbackData         RecvXappCallbackDataHandler
+        RecvNewE2Tdata               RecvNewE2TdataHandler 
        ProvideXappHandleHandlerImpl ProvideXappHandleHandlerImpl
        RetrieveStartupData          RetrieveStartupDataHandler
 }
@@ -64,6 +68,7 @@ func NewHttpRestful() *HttpRestful {
        instance := new(HttpRestful)
        instance.LaunchRest = launchRest
        instance.RecvXappCallbackData = recvXappCallbackData
+        instance.RecvNewE2Tdata = recvNewE2Tdata
        instance.ProvideXappHandleHandlerImpl = provideXappHandleHandlerImpl
        instance.RetrieveStartupData = retrieveStartupData
        return instance
@@ -75,9 +80,9 @@ func recvXappCallbackData(dataChannel <-chan *models.XappCallbackData) (*[]rtmgr
        // Drain the channel as we are only looking for the latest value until
        // xapp manager sends all xapp data with every request.
        length := len(dataChannel)
-       //rtmgr.Logger.Info(length)
+       //xapp.Logger.Info(length)
        for i := 0; i <= length; i++ {
-               rtmgr.Logger.Info("data received")
+               xapp.Logger.Info("data received")
                // If no data received from the REST, it blocks.
                xappData = <-dataChannel
        }
@@ -86,13 +91,39 @@ func recvXappCallbackData(dataChannel <-chan *models.XappCallbackData) (*[]rtmgr
                err := json.Unmarshal([]byte(xappData.XApps), &xapps)
                return &xapps, err
        } else {
-               rtmgr.Logger.Info("No data")
+               xapp.Logger.Info("No data")
        }
 
-       rtmgr.Logger.Debug("Nothing received on the Http interface")
+       xapp.Logger.Debug("Nothing received on the Http interface")
        return nil, nil
 }
 
+func recvNewE2Tdata(dataChannel <-chan *models.E2tData) (*rtmgr.E2TInstance, error) {
+        var e2tData *models.E2tData
+        xapp.Logger.Info("data received")
+
+        e2tData = <-dataChannel
+
+        if nil != e2tData {
+
+                       e2tinst :=  rtmgr.E2TInstance {
+                                Ranlist : make([]string, len(e2tData.RanNamelist)),
+                       }
+
+            e2tinst.Fqdn = *e2tData.E2TAddress
+            e2tinst.Name = "E2TERMINST"
+                   copy(e2tinst.Ranlist, e2tData.RanNamelist)
+
+            return &e2tinst,nil
+
+        } else {
+                xapp.Logger.Info("No data")
+        }
+
+        xapp.Logger.Debug("Nothing received on the Http interface")
+        return nil, nil
+}
+
 func validateXappCallbackData(callbackData *models.XappCallbackData) error {
        if len(callbackData.XApps) == 0 {
                return fmt.Errorf("invalid Data field: \"%s\"", callbackData.XApps)
@@ -107,11 +138,11 @@ func validateXappCallbackData(callbackData *models.XappCallbackData) error {
 
 func provideXappHandleHandlerImpl(datach chan<- *models.XappCallbackData, data *models.XappCallbackData) error {
        if data != nil {
-               rtmgr.Logger.Debug("Received callback data")
+               xapp.Logger.Debug("Received callback data")
        }
        err := validateXappCallbackData(data)
        if err != nil {
-               rtmgr.Logger.Warn("XApp callback data validation failed: " + err.Error())
+               xapp.Logger.Warn("XApp callback data validation failed: " + err.Error())
                return err
        } else {
                datach <- data
@@ -130,17 +161,65 @@ func validateXappSubscriptionData(data *models.XappSubscriptionData) error {
        return err
 }
 
+func validateE2tData(data *models.E2tData) error {
+
+       e2taddress_key := *data.E2TAddress
+        if (e2taddress_key == "") {
+                return fmt.Errorf("E2TAddress is empty!!!")
+        }
+       stringSlice := strings.Split(e2taddress_key, ":")
+       if (len(stringSlice) == 1) {
+               return fmt.Errorf("E2T E2TAddress is not a proper format like ip:port, %v", e2taddress_key )
+       }
+
+       if checkValidaE2TAddress(e2taddress_key) {
+               return fmt.Errorf("E2TAddress already exist!!!, E2TAddress: %v",e2taddress_key)
+       }
+
+       return nil
+}
+
+func validateDeleteE2tData(data *models.E2tDeleteData) error {
+
+        if (*data.E2TAddress == "") {
+                return fmt.Errorf("E2TAddress is empty!!!")
+        }
+
+       for _, element := range data.RanAssocList {
+               e2taddress_key := *element.E2TAddress
+               stringSlice := strings.Split(e2taddress_key, ":")
+
+               if (len(stringSlice) == 1) {
+                       return fmt.Errorf("E2T Delete - RanAssocList E2TAddress is not a proper format like ip:port, %v", e2taddress_key)
+               }
+
+
+               if !checkValidaE2TAddress(e2taddress_key) {
+                               return fmt.Errorf("E2TAddress doesn't exist!!!, E2TAddress: %v",e2taddress_key)
+               }
+
+       }
+       return nil
+}
+
+func checkValidaE2TAddress(e2taddress string) bool {
+
+       _, exist := rtmgr.Eps[e2taddress]
+       return exist
+
+}
+
 func provideXappSubscriptionHandleImpl(subchan chan<- *models.XappSubscriptionData,
        data *models.XappSubscriptionData) error {
-       rtmgr.Logger.Debug("Invoked provideXappSubscriptionHandleImpl")
+       xapp.Logger.Debug("Invoked provideXappSubscriptionHandleImpl")
        err := validateXappSubscriptionData(data)
        if err != nil {
-               rtmgr.Logger.Error(err.Error())
+               xapp.Logger.Error(err.Error())
                return err
        }
        subchan <- data
        //var val = string(*data.Address + ":" + strconv.Itoa(int(*data.Port)))
-       rtmgr.Logger.Debug("Endpoints: %v", rtmgr.Eps)
+       xapp.Logger.Debug("Endpoints: %v", rtmgr.Eps)
        return nil
 }
 
@@ -158,15 +237,15 @@ func subscriptionExists(data *models.XappSubscriptionData) bool {
 
 func deleteXappSubscriptionHandleImpl(subdelchan chan<- *models.XappSubscriptionData,
        data *models.XappSubscriptionData) error {
-       rtmgr.Logger.Debug("Invoked deleteXappSubscriptionHandleImpl")
+       xapp.Logger.Debug("Invoked deleteXappSubscriptionHandleImpl")
        err := validateXappSubscriptionData(data)
        if err != nil {
-               rtmgr.Logger.Error(err.Error())
+               xapp.Logger.Error(err.Error())
                return err
        }
 
        if !subscriptionExists(data) {
-               rtmgr.Logger.Warn("subscription not found: %d", *data.SubscriptionID)
+               xapp.Logger.Warn("subscription not found: %d", *data.SubscriptionID)
                err := fmt.Errorf("subscription not found: %d", *data.SubscriptionID)
                return err
        }
@@ -175,17 +254,85 @@ func deleteXappSubscriptionHandleImpl(subdelchan chan<- *models.XappSubscription
        return nil
 }
 
+func createNewE2tHandleHandlerImpl(e2taddchan chan<- *models.E2tData,
+        data *models.E2tData) error {
+        xapp.Logger.Debug("Invoked createNewE2tHandleHandlerImpl")
+        err := validateE2tData(data)
+        if err != nil {
+                xapp.Logger.Error(err.Error())
+                return err
+        }
+        e2taddchan <- data
+        return nil
+}
+
+func validateE2TAddressRANListData(assRanE2tData models.RanE2tMap) error {
+
+       xapp.Logger.Debug("Invoked.validateE2TAddressRANListData : %v", assRanE2tData)
+
+       for _, element := range assRanE2tData {
+               if *element.E2TAddress == "" {
+                       return fmt.Errorf("E2T Instance - E2TAddress is empty!!!")
+               }
+
+               e2taddress_key := *element.E2TAddress
+               if !checkValidaE2TAddress(e2taddress_key) {
+                       return fmt.Errorf("E2TAddress doesn't exist!!!, E2TAddress: %v",e2taddress_key)
+               }
+
+       }
+       return nil
+}
+
+func associateRanToE2THandlerImpl(assranchan chan<- models.RanE2tMap,
+        data models.RanE2tMap) error {
+        xapp.Logger.Debug("Invoked associateRanToE2THandlerImpl")
+       err := validateE2TAddressRANListData(data)
+       if err != nil {
+               xapp.Logger.Warn(" Association of RAN to E2T Instance data validation failed: " + err.Error())
+               return err
+       }
+       assranchan <- data
+        return nil
+}
+
+func disassociateRanToE2THandlerImpl(disassranchan chan<- models.RanE2tMap,
+        data models.RanE2tMap) error {
+        xapp.Logger.Debug("Invoked disassociateRanToE2THandlerImpl")
+       err := validateE2TAddressRANListData(data)
+       if err != nil {
+               xapp.Logger.Warn(" Disassociation of RAN List from E2T Instance data validation failed: " + err.Error())
+               return err
+       }
+       disassranchan <- data
+        return nil
+}
+
+func deleteE2tHandleHandlerImpl(e2tdelchan chan<- *models.E2tDeleteData,
+        data *models.E2tDeleteData) error {
+        xapp.Logger.Debug("Invoked deleteE2tHandleHandlerImpl")
+
+        err := validateDeleteE2tData(data)
+        if err != nil {
+                xapp.Logger.Error(err.Error())
+                return err
+        }
+
+        e2tdelchan <- data
+        return nil
+}
+
 func launchRest(nbiif *string, datach chan<- *models.XappCallbackData, subchan chan<- *models.XappSubscriptionData,
-       subdelchan chan<- *models.XappSubscriptionData) {
+       subdelchan chan<- *models.XappSubscriptionData, e2taddchan chan<- *models.E2tData, assranchan chan<- models.RanE2tMap, disassranchan chan<- models.RanE2tMap, e2tdelchan chan<- *models.E2tDeleteData) {
        swaggerSpec, err := loads.Embedded(restapi.SwaggerJSON, restapi.FlatSwaggerJSON)
        if err != nil {
                //log.Fatalln(err)
-               rtmgr.Logger.Error(err.Error())
+               xapp.Logger.Error(err.Error())
                os.Exit(1)
        }
        nbiUrl, err := url.Parse(*nbiif)
        if err != nil {
-               rtmgr.Logger.Error(err.Error())
+               xapp.Logger.Error(err.Error())
                os.Exit(1)
        }
        api := operations.NewRoutingManagerAPI(swaggerSpec)
@@ -194,17 +341,17 @@ func launchRest(nbiif *string, datach chan<- *models.XappCallbackData, subchan c
 
        server.Port, err = strconv.Atoi(nbiUrl.Port())
        if err != nil {
-               rtmgr.Logger.Error("Invalid NBI RestAPI port")
+               xapp.Logger.Error("Invalid NBI RestAPI port")
                os.Exit(1)
        }
        server.Host = "0.0.0.0"
        // set handlers
        api.HandleProvideXappHandleHandler = handle.ProvideXappHandleHandlerFunc(
                func(params handle.ProvideXappHandleParams) middleware.Responder {
-                       rtmgr.Logger.Info("Data received on Http interface")
+                       xapp.Logger.Info("Data received on Http interface")
                        err := provideXappHandleHandlerImpl(datach, params.XappCallbackData)
                        if err != nil {
-                               rtmgr.Logger.Error("Invalid XApp callback data: " + err.Error())
+                               xapp.Logger.Error("Invalid XApp callback data: " + err.Error())
                                return handle.NewProvideXappHandleBadRequest()
                        } else {
                                return handle.NewGetHandlesOK()
@@ -232,15 +379,58 @@ func launchRest(nbiif *string, datach chan<- *models.XappCallbackData, subchan c
                                return handle.NewGetHandlesOK()
                        }
                })
+       api.HandleCreateNewE2tHandleHandler = handle.CreateNewE2tHandleHandlerFunc(
+                func(params handle.CreateNewE2tHandleParams) middleware.Responder {
+                        err := createNewE2tHandleHandlerImpl(e2taddchan, params.E2tData)
+                        if err != nil {
+                                return handle.NewCreateNewE2tHandleBadRequest()
+                        } else {
+                               time.Sleep(1 * time.Second)
+                                return handle.NewCreateNewE2tHandleCreated()
+                        }
+                })
+
+       api.HandleAssociateRanToE2tHandleHandler = handle.AssociateRanToE2tHandleHandlerFunc(
+               func(params handle.AssociateRanToE2tHandleParams) middleware.Responder {
+                        err := associateRanToE2THandlerImpl(assranchan, params.RanE2tList)
+                       if err != nil {
+                                return handle.NewAssociateRanToE2tHandleBadRequest()
+                        } else {
+                               time.Sleep(1 * time.Second)
+                                return handle.NewAssociateRanToE2tHandleCreated()
+                        }
+                })
+
+       api.HandleDissociateRanHandler = handle.DissociateRanHandlerFunc(
+               func(params handle.DissociateRanParams) middleware.Responder {
+                       err := disassociateRanToE2THandlerImpl(disassranchan, params.DissociateList)
+                       if err != nil {
+                                return handle.NewDissociateRanBadRequest()
+                        } else {
+                               time.Sleep(1 * time.Second)
+                                return handle.NewDissociateRanCreated()
+                        }
+                })
+
+       api.HandleDeleteE2tHandleHandler = handle.DeleteE2tHandleHandlerFunc(
+                func(params handle.DeleteE2tHandleParams) middleware.Responder {
+                        err := deleteE2tHandleHandlerImpl(e2tdelchan, params.E2tData)
+                        if err != nil {
+                                return handle.NewDeleteE2tHandleBadRequest()
+                        } else {
+                               time.Sleep(1 * time.Second)
+                                return handle.NewDeleteE2tHandleCreated()
+                        }
+                })
        // start to serve API
-       rtmgr.Logger.Info("Starting the HTTP Rest service")
+       xapp.Logger.Info("Starting the HTTP Rest service")
        if err := server.Serve(); err != nil {
-               rtmgr.Logger.Error(err.Error())
+               xapp.Logger.Error(err.Error())
        }
 }
 
 func httpGetXApps(xmurl string) (*[]rtmgr.XApp, error) {
-       rtmgr.Logger.Info("Invoked httprestful.httpGetXApps: " + xmurl)
+       xapp.Logger.Info("Invoked httprestful.httpGetXApps: " + xmurl)
        r, err := myClient.Get(xmurl)
        if err != nil {
                return nil, err
@@ -248,17 +438,17 @@ func httpGetXApps(xmurl string) (*[]rtmgr.XApp, error) {
        defer r.Body.Close()
 
        if r.StatusCode == 200 {
-               rtmgr.Logger.Debug("http client raw response: %v", r)
+               xapp.Logger.Debug("http client raw response: %v", r)
                var xapps []rtmgr.XApp
                err = json.NewDecoder(r.Body).Decode(&xapps)
                if err != nil {
-                       rtmgr.Logger.Warn("Json decode failed: " + err.Error())
+                       xapp.Logger.Warn("Json decode failed: " + err.Error())
                }
-               rtmgr.Logger.Info("HTTP GET: OK")
-               rtmgr.Logger.Debug("httprestful.httpGetXApps returns: %v", xapps)
+               xapp.Logger.Info("HTTP GET: OK")
+               xapp.Logger.Debug("httprestful.httpGetXApps returns: %v", xapps)
                return &xapps, err
        }
-       rtmgr.Logger.Warn("httprestful got an unexpected http status code: %v", r.StatusCode)
+       xapp.Logger.Warn("httprestful got an unexpected http status code: %v", r.StatusCode)
        return nil, nil
 }
 
@@ -271,15 +461,15 @@ func retrieveStartupData(xmurl string, nbiif string, fileName string, configfile
                if xappData != nil && err == nil {
                        pcData, confErr := rtmgr.GetPlatformComponents(configfile)
                        if confErr != nil {
-                               rtmgr.Logger.Error(confErr.Error())
+                               xapp.Logger.Error(confErr.Error())
                                return confErr
                        }
-                       rtmgr.Logger.Info("Recieved intial xapp data and platform data, writing into SDL.")
+                       xapp.Logger.Info("Recieved intial xapp data and platform data, writing into SDL.")
                        // Combine the xapps data and platform data before writing to the SDL
-                       ricData := &rtmgr.RicComponents{XApps: *xappData, Pcs: *pcData}
+                       ricData := &rtmgr.RicComponents{XApps: *xappData, Pcs: *pcData, E2Ts:  make(map[string]rtmgr.E2TInstance)}
                        writeErr := sdlEngine.WriteAll(fileName, ricData)
                        if writeErr != nil {
-                               rtmgr.Logger.Error(writeErr.Error())
+                               xapp.Logger.Error(writeErr.Error())
                        }
                        // post subscription req to appmgr
                        readErr = PostSubReq(xmurl, nbiif)
@@ -289,7 +479,7 @@ func retrieveStartupData(xmurl string, nbiif string, fileName string, configfile
                } else if err == nil {
                        readErr = errors.New("unexpected HTTP status code")
                } else {
-                       rtmgr.Logger.Warn("cannot get xapp data due to: " + err.Error())
+                       xapp.Logger.Warn("cannot get xapp data due to: " + err.Error())
                        readErr = err
                }
        }
@@ -297,31 +487,37 @@ func retrieveStartupData(xmurl string, nbiif string, fileName string, configfile
 }
 
 func (r *HttpRestful) Initialize(xmurl string, nbiif string, fileName string, configfile string,
-       sdlEngine sdl.Engine, rpeEngine rpe.Engine, triggerSBI chan<- bool) error {
+       sdlEngine sdl.Engine, rpeEngine rpe.Engine, triggerSBI chan<- bool, m *sync.Mutex) error {
        err := r.RetrieveStartupData(xmurl, nbiif, fileName, configfile, sdlEngine)
        if err != nil {
-               rtmgr.Logger.Error("Exiting as nbi failed to get the initial startup data from the xapp manager: " + err.Error())
+               xapp.Logger.Error("Exiting as nbi failed to get the initial startup data from the xapp manager: " + err.Error())
                return err
        }
 
        datach := make(chan *models.XappCallbackData, 10)
        subschan := make(chan *models.XappSubscriptionData, 10)
        subdelchan := make(chan *models.XappSubscriptionData, 10)
-       rtmgr.Logger.Info("Launching Rest Http service")
+       e2taddchan := make(chan *models.E2tData, 10)
+       associateranchan := make(chan models.RanE2tMap, 10)
+       disassociateranchan := make(chan models.RanE2tMap, 10)
+       e2tdelchan := make(chan *models.E2tDeleteData, 10)
+       xapp.Logger.Info("Launching Rest Http service")
        go func() {
-               r.LaunchRest(&nbiif, datach, subschan, subdelchan)
+               r.LaunchRest(&nbiif, datach, subschan, subdelchan, e2taddchan, associateranchan, disassociateranchan, e2tdelchan)
        }()
 
        go func() {
                for {
                        data, err := r.RecvXappCallbackData(datach)
                        if err != nil {
-                               rtmgr.Logger.Error("cannot get data from rest api dute to: " + err.Error())
+                               xapp.Logger.Error("cannot get data from rest api dute to: " + err.Error())
                        } else if data != nil {
-                               rtmgr.Logger.Debug("Fetching all xApps deployed in xApp Manager through GET operation.")
+                               xapp.Logger.Debug("Fetching all xApps deployed in xApp Manager through GET operation.")
                                alldata, err1 := httpGetXApps(xmurl)
                                if alldata != nil && err1 == nil {
+                                       m.Lock()
                                        sdlEngine.WriteXApps(fileName, alldata)
+                                       m.Unlock()
                                        triggerSBI <- true
                                }
                        }
@@ -331,7 +527,7 @@ func (r *HttpRestful) Initialize(xmurl string, nbiif string, fileName string, co
        go func() {
                for {
                        data := <-subschan
-                       rtmgr.Logger.Debug("received XApp subscription data")
+                       xapp.Logger.Debug("received XApp subscription data")
                        addSubscription(&rtmgr.Subs, data)
                        triggerSBI <- true
                }
@@ -340,12 +536,63 @@ func (r *HttpRestful) Initialize(xmurl string, nbiif string, fileName string, co
        go func() {
                for {
                        data := <-subdelchan
-                       rtmgr.Logger.Debug("received XApp subscription delete data")
+                       xapp.Logger.Debug("received XApp subscription delete data")
                        delSubscription(&rtmgr.Subs, data)
                        triggerSBI <- true
                }
        }()
 
+        go func() {
+                for {
+                        xapp.Logger.Debug("received create New E2T data")
+
+                        data, _ := r.RecvNewE2Tdata(e2taddchan)
+                        if data != nil {
+                               m.Lock()
+                                sdlEngine.WriteNewE2TInstance(fileName, data)
+                               m.Unlock()
+                                triggerSBI <- true
+                        }
+                }
+        }()
+
+        go func() {
+                for {
+                       data := <-associateranchan
+                        xapp.Logger.Debug("received associate RAN list to E2T instance mapping from E2 Manager")
+                       m.Lock()
+                        sdlEngine.WriteAssRANToE2TInstance(fileName, data)
+                       m.Unlock()
+                        triggerSBI <- true
+                }
+        }()
+
+        go func() {
+                for {
+
+                       data := <-disassociateranchan
+                        xapp.Logger.Debug("received disassociate RANs from E2T instance")
+                       m.Lock()
+                        sdlEngine.WriteDisAssRANFromE2TInstance(fileName, data)
+                       m.Unlock()
+                        triggerSBI <- true
+                }
+        }()
+
+        go func() {
+                for {
+                        xapp.Logger.Debug("received Delete E2T data")
+
+                       data := <-e2tdelchan
+                        if data != nil {
+                               m.Lock()
+                                sdlEngine.WriteDeleteE2TInstance(fileName, data)
+                               m.Unlock()
+                                triggerSBI <- true
+                        }
+                }
+        }()
+
        return nil
 }
 
@@ -358,7 +605,7 @@ func addSubscription(subs *rtmgr.SubscriptionList, xappSubData *models.XappSubsc
        sub := rtmgr.Subscription{SubID: *xappSubData.SubscriptionID, Fqdn: *xappSubData.Address, Port: *xappSubData.Port}
        for _, elem := range *subs {
                if elem == sub {
-                       rtmgr.Logger.Warn("rtmgr.addSubscription: Subscription already present: %v", elem)
+                       xapp.Logger.Warn("rtmgr.addSubscription: Subscription already present: %v", elem)
                        b = true
                }
        }
@@ -369,7 +616,7 @@ func addSubscription(subs *rtmgr.SubscriptionList, xappSubData *models.XappSubsc
 }
 
 func delSubscription(subs *rtmgr.SubscriptionList, xappSubData *models.XappSubscriptionData) bool {
-       rtmgr.Logger.Debug("Deleteing the subscription from the subscriptions list")
+       xapp.Logger.Debug("Deleteing the subscription from the subscriptions list")
        var present = false
        sub := rtmgr.Subscription{SubID: *xappSubData.SubscriptionID, Fqdn: *xappSubData.Address, Port: *xappSubData.Port}
        for i, elem := range *subs {
@@ -383,7 +630,7 @@ func delSubscription(subs *rtmgr.SubscriptionList, xappSubData *models.XappSubsc
                }
        }
        if present == false {
-               rtmgr.Logger.Warn("rtmgr.delSubscription: Subscription = %v, not present in the existing subscriptions", xappSubData)
+               xapp.Logger.Warn("rtmgr.delSubscription: Subscription = %v, not present in the existing subscriptions", xappSubData)
        }
        return present
 }