First commit

setup/e2mgr/tools/KubernetesSimulator/Dockerfile

@@ -0,0 +1,33 @@
+##############################################################################
+#
+#   Copyright (c) 2019 AT&T Intellectual Property.
+#
+#   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.
+#
+##############################################################################
+
+FROM nexus3.o-ran-sc.org:10004/bldr-ubuntu16-c-go:2-u16.04-nng as ubuntu
+
+WORKDIR /opt/kubsimulator
+COPY . . 
+ENV PATH=$PATH:/usr/local/go/bin:/usr/lib/go-1.12/bin
+
+RUN go build main.go
+
+
+FROM ubuntu:16.04
+COPY --from=ubuntu /opt/kubsimulator/main /opt/kubsimulator/main
+COPY --from=ubuntu /opt/kubsimulator/resources /opt/kubsimulator/resources
+
+WORKDIR /opt/kubsimulator
+CMD exec ./main

setup/e2mgr/tools/KubernetesSimulator/api/swagger.yaml

@@ -0,0 +1,54 @@
+# ========================LICENSE_START=================================
+# O-RAN-SC
+#
+# Copyright (C) 2019 AT&T Intellectual Property and 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.
+# ========================LICENSE_END===================================
+
+# This source code is part of the near-RT RIC (RAN Intelligent Controller)
+# platform project (RICP).
+
+
+openapi: 3.0.0
+info:
+  title: Kubernetes Simulator
+  description: Kubernetes Simulator APIs
+  version: 0.0.1
+servers:
+  - url: 'http://{apiRoot}/api/v1'
+    variables:
+      apiRoot:
+        default: 'localhost:59009'
+paths:
+  '/namespaces/{namespace}/pods/{pod}':
+    delete:
+      summary: Delete Pod
+      tags:
+        - Delete Pod
+      operationId: DeletePod
+      parameters:
+        - name: namespace
+          in: path
+          required: true
+          schema:
+            type: string
+        - name: pod
+          in: path
+          required: true
+          description: pod to delete
+          schema:
+            type: string
+      responses:
+        '200':
+          description: Successful operation

setup/e2mgr/tools/KubernetesSimulator/configuration/configuration.go

@@ -0,0 +1,57 @@
+//
+// Copyright 2019 AT&T Intellectual Property
+// Copyright 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.
+
+//  This source code is part of the near-RT RIC (RAN Intelligent Controller)
+//  platform project (RICP).
+
+
+package configuration
+
+import (
+	"fmt"
+	"github.com/spf13/viper"
+)
+
+type Configuration struct {
+	Http struct {
+		Port int
+	}
+
+}
+
+func ParseConfiguration() *Configuration{
+	viper.SetConfigType("yaml")
+	viper.SetConfigName("configuration")
+	viper.AddConfigPath("KubernetesSimulator/resources/")
+	viper.AddConfigPath("./resources/")  //For production
+	viper.AddConfigPath("../resources/") //For test under Docker
+	viper.AddConfigPath("../../resources/") //For test under Docker
+	err := viper.ReadInConfig()
+	if err != nil {
+		panic(fmt.Sprintf("#configuration.ParseConfiguration - failed to read configuration file: %s\n", err))
+	}
+
+	config := Configuration{}
+	config.fillHttpConfig(viper.Sub("http"))
+	return &config
+}
+
+func (c *Configuration)fillHttpConfig(httpConfig *viper.Viper) {
+	if httpConfig == nil {
+		panic(fmt.Sprintf("#configuration.fillHttpConfig - failed to fill HTTP configuration: The entry 'http' not found\n"))
+	}
+	c.Http.Port = httpConfig.GetInt("port")
+}

setup/e2mgr/tools/KubernetesSimulator/configuration/configuration_test.go

@@ -0,0 +1,76 @@
+//
+// Copyright 2019 AT&T Intellectual Property
+// Copyright 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.
+
+//  This source code is part of the near-RT RIC (RAN Intelligent Controller)
+//  platform project (RICP).
+
+
+package configuration
+
+import (
+	"github.com/stretchr/testify/assert"
+	"gopkg.in/yaml.v2"
+	"io/ioutil"
+	"os"
+	"testing"
+)
+
+func TestParseConfigurationSuccess(t *testing.T) {
+	config := ParseConfiguration()
+	assert.Equal(t, 59009, config.Http.Port)
+}
+
+func TestParseConfigurationFileNotFoundFailure(t *testing.T) {
+	configPath := "../resources/configuration.yaml"
+	configPathTmp := "../resources/configuration.yaml_tmp"
+	err := os.Rename(configPath, configPathTmp)
+	if err != nil {
+		t.Errorf("#TestParseConfigurationFileNotFoundFailure - failed to rename configuration file: %s\n", configPath)
+	}
+	defer func() {
+		err = os.Rename(configPathTmp, configPath)
+		if err != nil {
+			t.Errorf("#TestParseConfigurationFileNotFoundFailure - failed to rename configuration file: %s\n", configPath)
+		}
+	}()
+	assert.Panics(t, func() { ParseConfiguration() })
+}
+
+func TestHttpConfigNotFoundFailure(t *testing.T) {
+	configPath := "../resources/configuration.yaml"
+	configPathTmp := "../resources/configuration.yaml_tmp"
+	err := os.Rename(configPath, configPathTmp)
+	if err != nil {
+		t.Errorf("#TestHttpConfigNotFoundFailure - failed to rename configuration file: %s\n", configPath)
+	}
+	defer func() {
+		err = os.Rename(configPathTmp, configPath)
+		if err != nil {
+			t.Errorf("#TestHttpConfigNotFoundFailure - failed to rename configuration file: %s\n", configPath)
+		}
+	}()
+	yamlMap := map[string]interface{}{}
+	buf, err := yaml.Marshal(yamlMap)
+	if err != nil {
+		t.Errorf("#TestHttpConfigNotFoundFailure - failed to marshal configuration map\n")
+	}
+	err = ioutil.WriteFile("../resources/configuration.yaml", buf, 0644)
+	if err != nil {
+		t.Errorf("#TestHttpConfigNotFoundFailure - failed to write configuration file: %s\n", configPath)
+	}
+	assert.PanicsWithValue(t, "#configuration.fillHttpConfig - failed to fill HTTP configuration: The entry 'http' not found\n",
+		func() { ParseConfiguration() })
+}

setup/e2mgr/tools/KubernetesSimulator/go.mod

@@ -0,0 +1,13 @@
+module kubsimulator
+
+go 1.12
+
+require (
+	github.com/gorilla/mux v1.7.0
+	github.com/pkg/errors v0.8.1
+	github.com/spf13/viper v1.6.1
+	github.com/stretchr/testify v1.4.0
+	go.uber.org/atomic v1.5.0
+	go.uber.org/zap v1.13.0
+	gopkg.in/yaml.v2 v2.2.4
+)

setup/e2mgr/tools/KubernetesSimulator/go.sum

@@ -0,0 +1,174 @@
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setup/e2mgr/tools/KubernetesSimulator/go/controller.go

@@ -0,0 +1,30 @@
+//
+// Copyright 2019 AT&T Intellectual Property
+// Copyright 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.
+
+//  This source code is part of the near-RT RIC (RAN Intelligent Controller)
+//  platform project (RICP).
+
+
+package kubernetes
+
+import (
+	"net/http"
+)
+
+func DeletePod(writer http.ResponseWriter, r *http.Request) {
+	writer.Header().Set("Content-Type", "application/json; charset=UTF-8")
+	writer.WriteHeader(http.StatusOK)
+}

setup/e2mgr/tools/KubernetesSimulator/go/logger.go

@@ -0,0 +1,56 @@
+//
+// Copyright 2019 AT&T Intellectual Property
+// Copyright 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.
+
+//  This source code is part of the near-RT RIC (RAN Intelligent Controller)
+//  platform project (RICP).
+
+
+package kubernetes
+
+import (
+	"bytes"
+	"encoding/json"
+	"io/ioutil"
+	"log"
+	"net/http"
+	"time"
+)
+
+func Logger(inner http.Handler, name string) http.Handler {
+	return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+		start := time.Now()
+
+		inner.ServeHTTP(w, r)
+
+		body, err := ioutil.ReadAll(r.Body)
+		if err != nil {
+			log.Printf("Error reading body: %v", err)
+			http.Error(w, "can't read body", http.StatusBadRequest)
+			return
+		}
+
+		buffer := new(bytes.Buffer)
+		_ =json.Compact(buffer, body)
+
+		log.Printf(
+			"%s %s  body: %s elapsed: %s",
+			r.Method,
+			r.RequestURI,
+			buffer,
+			time.Since(start),
+		)
+	})
+}

setup/e2mgr/tools/KubernetesSimulator/go/request.go

@@ -0,0 +1,28 @@
+//
+// Copyright 2019 AT&T Intellectual Property
+// Copyright 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.
+
+//  This source code is part of the near-RT RIC (RAN Intelligent Controller)
+//  platform project (RICP).
+
+
+package kubernetes
+
+type Request struct {
+
+	Kind string `json:"kind"`
+
+	ApiVersion string `json:"apiVersion"`
+}

setup/e2mgr/tools/KubernetesSimulator/go/routers.go

@@ -0,0 +1,64 @@
+//
+// Copyright 2019 AT&T Intellectual Property
+// Copyright 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.
+
+//  This source code is part of the near-RT RIC (RAN Intelligent Controller)
+//  platform project (RICP).
+
+
+package kubernetes
+
+import (
+	//"fmt"
+	"net/http"
+	"strings"
+
+	"github.com/gorilla/mux"
+)
+
+type Route struct {
+	Name        string
+	Method      string
+	Pattern     string
+	HandlerFunc http.HandlerFunc
+}
+
+type Routes []Route
+
+func NewRouter() *mux.Router {
+	router := mux.NewRouter().StrictSlash(true)
+	for _, route := range routes {
+		var handler http.Handler
+		handler = route.HandlerFunc
+		handler = Logger(handler, route.Name)
+
+		router.
+			Methods(route.Method).
+			Path(route.Pattern).
+			Name(route.Name).
+			Handler(handler)
+	}
+
+	return router
+}
+
+var routes = Routes{
+	Route{
+		"DeletePod",
+		strings.ToUpper("Delete"),
+		"/api/v1/namespaces/{namespace}/pods/{pod}",
+		DeletePod,
+	},
+}

setup/e2mgr/tools/KubernetesSimulator/main.go

@@ -0,0 +1,40 @@
+//
+// Copyright 2019 AT&T Intellectual Property
+// Copyright 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.
+
+//  This source code is part of the near-RT RIC (RAN Intelligent Controller)
+//  platform project (RICP).
+
+
+package main
+
+import (
+	"fmt"
+	"kubsimulator/configuration"
+	"kubsimulator/go"
+	"log"
+	"net/http"
+)
+
+func main() {
+	config := configuration.ParseConfiguration()
+	port := config.Http.Port
+
+	log.Printf("Server started on port %d", port)
+
+	router := kubernetes.NewRouter()
+
+	log.Fatal(http.ListenAndServe(fmt.Sprintf(":%d", port), router))
+}

setup/e2mgr/tools/KubernetesSimulator/resources/configuration.yaml

@@ -0,0 +1,2 @@
+http:
+  port: 59009

setup/e2mgr/tools/RoutingManagerSimulator/Dockerfile

@@ -0,0 +1,37 @@
+##############################################################################
+#
+#   Copyright (c) 2019 AT&T Intellectual Property.
+#
+#   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.
+#
+##############################################################################
+
+FROM nexus3.o-ran-sc.org:10004/o-ran-sc/bldr-ubuntu18-c-go:9-u18.04 as ubuntu
+
+WORKDIR /opt/rmsimulator
+COPY . . 
+ENV PATH=$PATH:/usr/local/go/bin:/usr/lib/go-1.12/bin
+
+RUN apt-get update \
+  && apt-get --allow-releaseinfo-change update \
+  && apt upgrade -y
+RUN go build main.go
+
+
+FROM ubuntu:18.04
+COPY --from=ubuntu /opt/rmsimulator/main /opt/rmsimulator/main
+COPY --from=ubuntu /opt/rmsimulator/resources /opt/rmsimulator/resources
+
+WORKDIR /opt/rmsimulator
+#CMD mkdir -p resources/conf  exec ./xappmock
+CMD exec ./main

setup/e2mgr/tools/RoutingManagerSimulator/api/swagger.yaml

@@ -0,0 +1,384 @@
+# ========================LICENSE_START=================================
+# O-RAN-SC
+#
+# Copyright (C) 2019 AT&T Intellectual Property and 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.
+# ========================LICENSE_END===================================
+
+# This source code is part of the near-RT RIC (RAN Intelligent Controller)
+# platform project (RICP).
+
+
+swagger: "2.0"
+info:
+  description: "This is the Swagger/OpenAPI 2.0 definition of Routing Manager's Northbound\
+    \ API."
+  version: "0.4.0"
+  title: "Routing Manager"
+  license:
+    name: "Apache 2.0"
+    url: "http://www.apache.org/licenses/LICENSE-2.0.html"
+host: "rtmgr"
+basePath: "/ric/v1"
+tags:
+- name: "handle"
+  description: "Available handles"
+- name: "health"
+  description: "Health of the system"
+schemes:
+- "http"
+paths:
+  /health:
+    get:
+      tags:
+      - "health"
+      summary: "Retrive the health of Routing Manager"
+      description: "By performing a GET method on the health resource, the API caller\
+        \ is able to retrieve the health of Routing Manager"
+      operationId: "get_health"
+      consumes:
+      - "application/json"
+      produces:
+      - "application/json"
+      parameters: []
+      responses:
+        "200":
+          description: "The health of the system"
+          schema:
+            $ref: "#/definitions/health-status"
+  /handles:
+    get:
+      tags:
+      - "handle"
+      summary: "Placeholder for further usage"
+      description: "Placeholder for further usage."
+      operationId: "get_handles"
+      consumes:
+      - "application/json"
+      produces:
+      - "application/json"
+      parameters: []
+      responses:
+        "200":
+          description: "Dummy response"
+  /handles/xapp-handle:
+    post:
+      tags:
+      - "handle"
+      summary: "Provide callback"
+      description: "By performing a POST method on the xapp-handle resource, the API\
+        \ caller is able to perform a callback on Routing Manager."
+      operationId: "provide_xapp_handle"
+      consumes:
+      - "application/json"
+      produces:
+      - "application/json"
+      parameters:
+      - in: "body"
+        name: "xapp-callback-data"
+        description: "xApp related callback data"
+        required: true
+        schema:
+          $ref: "#/definitions/xapp-callback-data"
+        x-exportParamName: "XappCallbackData"
+      responses:
+        "201":
+          description: "Callback received"
+        "400":
+          description: "Invalid data"
+  /handles/xapp-subscription-handle:
+    post:
+      tags:
+      - "handle"
+      summary: "API for updating about new xapp subscription"
+      description: "By performing a POST method on the xapp-subscription-handle resource,\
+        \ the API caller is able to update the Routing manager about the creation\
+        \ of new subscription by an Xapp instance."
+      operationId: "provide_xapp_subscription_handle"
+      consumes:
+      - "application/json"
+      produces:
+      - "application/json"
+      parameters:
+      - in: "body"
+        name: "xapp-subscription-data"
+        description: "xApp related subscription data"
+        required: true
+        schema:
+          $ref: "#/definitions/xapp-subscription-data"
+        x-exportParamName: "XappSubscriptionData"
+      responses:
+        "201":
+          description: "Xapp Subscription data received"
+        "400":
+          description: "Invalid data"
+    delete:
+      tags:
+      - "handle"
+      summary: "API for deleting an xapp subscription"
+      description: "By performing the delete operation on xapp-subscription-handle\
+        \ resource, the API caller will be able to update routing manager about the\
+        \ deletion of an xapp's subscription"
+      operationId: "delete_xapp_subscription_handle"
+      consumes:
+      - "application/json"
+      parameters:
+      - in: "body"
+        name: "xapp-subscription-data"
+        description: "xApp related subscription data"
+        required: true
+        schema:
+          $ref: "#/definitions/xapp-subscription-data"
+        x-exportParamName: "XappSubscriptionData"
+      responses:
+        "200":
+          description: "Xapp Subscription deleted"
+        "204":
+          description: "Content not found"
+  /handles/xapp-subscription-handle/{subscription_id}:
+    put:
+      tags:
+      - "handle"
+      summary: "API for updating the subscriber xApp list"
+      description: "By performing a PUT method on a xapp-subscription-handle/{subscription_id}\
+        \ resource, the API caller is able to update the Routing manager about the\
+        \ list of subscriber xApps related to the subscription denoted by the {subsription_id}."
+      operationId: "update_xapp_subscription_handle"
+      consumes:
+      - "application/json"
+      produces:
+      - "application/json"
+      parameters:
+      - name: "subscription_id"
+        in: "path"
+        description: "Subscription ID"
+        required: true
+        type: "integer"
+        format: "uint16"
+        x-exportParamName: "SubscriptionId"
+      - in: "body"
+        name: "xapp-list"
+        description: "xApp list"
+        required: true
+        schema:
+          $ref: "#/definitions/xapp-list"
+        x-exportParamName: "XappList"
+      responses:
+        "201":
+          description: "Xapp list received"
+        "400":
+          description: "Invalid data"
+  /handles/e2t:
+    post:
+      tags:
+      - "handle"
+      summary: "API for establishing platform routes when a new e2t instance gets\
+        \ added to platform"
+      description: "E2T updates its FQDN to E2M  during its initialisation, hence\
+        \ after E2M informs routing manager about new E2T instances FQDN. At this\
+        \ point Routing Mgr would establish platform routes"
+      operationId: "create_new_e2t_handle"
+      consumes:
+      - "application/json"
+      produces:
+      - "application/json"
+      parameters:
+      - in: "body"
+        name: "e2t-data"
+        description: "FQDN of the newly joined E2T instance"
+        required: true
+        schema:
+          $ref: "#/definitions/e2t-data"
+        x-exportParamName: "E2tData"
+      responses:
+        "201":
+          description: "new e2t instance is considered and platform routes are established"
+        "400":
+          description: "Invalid data"
+    delete:
+      tags:
+      - "handle"
+      summary: "API for clearing routes specific to a particular e2T instance"
+      description: "E2M would monitor E2T instances using its keep alive based mechanism\
+        \ during this time if an E2T instance is detected to be dead, E2M would distribute\
+        \ already associated ran's to other available/healthy E2T instances. Here\
+        \ E2M would share E2T instance address to be removed OR which is unhealthy\
+        \ and list of RAN instances to be dissociated and an association list which\
+        \ contains E2T FQDN and associated RAN names"
+      operationId: "delete_e2t_handle"
+      consumes:
+      - "application/json"
+      produces:
+      - "application/json"
+      parameters:
+      - in: "body"
+        name: "e2t-data"
+        description: "FQDN of the newly joined E2T instance"
+        required: true
+        schema:
+          $ref: "#/definitions/e2t-delete-data"
+        x-exportParamName: "E2tData"
+      responses:
+        "201":
+          description: "new e2t instance is considered and platform routes are established"
+        "400":
+          description: "Invalid data"
+  /handles/associate-ran-to-e2t:
+    post:
+      tags:
+      - "handle"
+      summary: "API for associating a ran to e2t instance"
+      description: "By performing a POST method on rane2tmapping, the API caller is\
+        \ able to update the Routing manager about the ran to e2t mapping which would\
+        \ be finally used to distribute routes to corresponding xApp and E2T instance"
+      operationId: "associate_ran_to_e2t_handle"
+      consumes:
+      - "application/json"
+      produces:
+      - "application/json"
+      parameters:
+      - in: "body"
+        name: "ran-e2t-list"
+        description: "ran to e2t mapping"
+        required: true
+        schema:
+          $ref: "#/definitions/ran-e2t-map"
+        x-exportParamName: "RanE2tList"
+      responses:
+        "201":
+          description: "e2t ran mapping recieved, platform routes"
+        "400":
+          description: "Invalid data"
+  /handles/dissociate-ran:
+    post:
+      tags:
+      - "handle"
+      summary: "API to dissociate ran from e2t"
+      description: "By performing a POST method on rane2tmapping, routing manager\
+        \ will dissociate ran name from e2t instance by updating or clearing routes"
+      operationId: "dissociate_ran"
+      consumes:
+      - "application/json"
+      produces:
+      - "application/json"
+      parameters:
+      - in: "body"
+        name: "dissociate-list"
+        description: "list of RAN to dissociate"
+        required: true
+        schema:
+          $ref: "#/definitions/ran-e2t-map"
+        x-exportParamName: "DissociateList"
+      responses:
+        "201":
+          description: "ran instances disociated"
+        "400":
+          description: "Invalid data"
+definitions:
+  health-status:
+    type: "object"
+    properties:
+      status:
+        type: "string"
+        enum:
+        - "healthy"
+        - "unhealthy"
+    example:
+      status: "healthy"
+  xapp-callback-data:
+    type: "object"
+    properties:
+      id:
+        type: "string"
+      event:
+        type: "string"
+      version:
+        type: "integer"
+        format: "int64"
+      xApps:
+        type: "string"
+  xapp-subscription-data:
+    type: "object"
+    required:
+    - "address"
+    - "port"
+    - "subscription_id"
+    properties:
+      address:
+        type: "string"
+      port:
+        type: "integer"
+        format: "uint16"
+        minimum: 0
+        maximum: 65535
+      subscription_id:
+        type: "integer"
+        format: "int32"
+  xapp-list:
+    type: "array"
+    items:
+      $ref: "#/definitions/xapp-element"
+  xapp-element:
+    type: "object"
+    required:
+    - "address"
+    - "port"
+    properties:
+      address:
+        type: "string"
+      port:
+        type: "integer"
+        format: "uint16"
+        minimum: 0
+        maximum: 65535
+  ran-e2t-map:
+    type: "array"
+    items:
+      $ref: "#/definitions/ran-e2t-element"
+  ran-e2t-element:
+    type: "object"
+    required:
+    - "E2TAddress"
+    properties:
+      E2TAddress:
+        type: "string"
+      ranNamelist:
+        $ref: "#/definitions/ranNamelist"
+  ranNamelist:
+    type: "array"
+    items:
+      type: "string"
+  e2t-data:
+    type: "object"
+    required:
+    - "E2TAddress"
+    properties:
+      E2TAddress:
+        type: "string"
+      ranNamelist:
+        $ref: "#/definitions/ranNamelist"
+  e2t-delete-data:
+    type: "object"
+    required:
+    - "E2TAddress"
+    properties:
+      E2TAddress:
+        type: "string"
+      ranNamelistTobeDissociated:
+        $ref: "#/definitions/ranNamelist"
+      ranAssocList:
+        $ref: "#/definitions/ran-e2t-map"
+externalDocs:
+  description: "Routing Manager"
+  url: "http://placeholder"

setup/e2mgr/tools/RoutingManagerSimulator/configuration/configuration.go

@@ -0,0 +1,57 @@
+//
+// Copyright 2019 AT&T Intellectual Property
+// Copyright 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.
+
+//  This source code is part of the near-RT RIC (RAN Intelligent Controller)
+//  platform project (RICP).
+
+
+package configuration
+
+import (
+	"fmt"
+	"github.com/spf13/viper"
+)
+
+type Configuration struct {
+	Http struct {
+		Port int
+	}
+
+}
+
+func ParseConfiguration() *Configuration{
+	viper.SetConfigType("yaml")
+	viper.SetConfigName("configuration")
+	viper.AddConfigPath("RoutingManagerSimulator/resources/")
+	viper.AddConfigPath("./resources/")  //For production
+	viper.AddConfigPath("../resources/") //For test under Docker
+	viper.AddConfigPath("../../resources/") //For test under Docker
+	err := viper.ReadInConfig()
+	if err != nil {
+		panic(fmt.Sprintf("#configuration.ParseConfiguration - failed to read configuration file: %s\n", err))
+	}
+
+	config := Configuration{}
+	config.fillHttpConfig(viper.Sub("http"))
+	return &config
+}
+
+func (c *Configuration)fillHttpConfig(httpConfig *viper.Viper) {
+	if httpConfig == nil {
+		panic(fmt.Sprintf("#configuration.fillHttpConfig - failed to fill HTTP configuration: The entry 'http' not found\n"))
+	}
+	c.Http.Port = httpConfig.GetInt("port")
+}

setup/e2mgr/tools/RoutingManagerSimulator/configuration/configuration_test.go

@@ -0,0 +1,76 @@
+//
+// Copyright 2019 AT&T Intellectual Property
+// Copyright 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.
+
+//  This source code is part of the near-RT RIC (RAN Intelligent Controller)
+//  platform project (RICP).
+
+
+package configuration
+
+import (
+	"github.com/stretchr/testify/assert"
+	"gopkg.in/yaml.v2"
+	"io/ioutil"
+	"os"
+	"testing"
+)
+
+func TestParseConfigurationSuccess(t *testing.T) {
+	config := ParseConfiguration()
+	assert.Equal(t, 12020, config.Http.Port)
+}
+
+func TestParseConfigurationFileNotFoundFailure(t *testing.T) {
+	configPath := "../resources/configuration.yaml"
+	configPathTmp := "../resources/configuration.yaml_tmp"
+	err := os.Rename(configPath, configPathTmp)
+	if err != nil {
+		t.Errorf("#TestParseConfigurationFileNotFoundFailure - failed to rename configuration file: %s\n", configPath)
+	}
+	defer func() {
+		err = os.Rename(configPathTmp, configPath)
+		if err != nil {
+			t.Errorf("#TestParseConfigurationFileNotFoundFailure - failed to rename configuration file: %s\n", configPath)
+		}
+	}()
+	assert.Panics(t, func() { ParseConfiguration() })
+}
+
+func TestHttpConfigNotFoundFailure(t *testing.T) {
+	configPath := "../resources/configuration.yaml"
+	configPathTmp := "../resources/configuration.yaml_tmp"
+	err := os.Rename(configPath, configPathTmp)
+	if err != nil {
+		t.Errorf("#TestHttpConfigNotFoundFailure - failed to rename configuration file: %s\n", configPath)
+	}
+	defer func() {
+		err = os.Rename(configPathTmp, configPath)
+		if err != nil {
+			t.Errorf("#TestHttpConfigNotFoundFailure - failed to rename configuration file: %s\n", configPath)
+		}
+	}()
+	yamlMap := map[string]interface{}{}
+	buf, err := yaml.Marshal(yamlMap)
+	if err != nil {
+		t.Errorf("#TestHttpConfigNotFoundFailure - failed to marshal configuration map\n")
+	}
+	err = ioutil.WriteFile("../resources/configuration.yaml", buf, 0644)
+	if err != nil {
+		t.Errorf("#TestHttpConfigNotFoundFailure - failed to write configuration file: %s\n", configPath)
+	}
+	assert.PanicsWithValue(t, "#configuration.fillHttpConfig - failed to fill HTTP configuration: The entry 'http' not found\n",
+		func() { ParseConfiguration() })
+}

setup/e2mgr/tools/RoutingManagerSimulator/go.mod

@@ -0,0 +1,13 @@
+module rmsimulator
+
+go 1.12
+
+require (
+	github.com/gorilla/mux v1.7.0
+	github.com/pkg/errors v0.8.1
+	github.com/spf13/viper v1.6.1
+	github.com/stretchr/testify v1.4.0
+	go.uber.org/atomic v1.5.0
+	go.uber.org/zap v1.13.0
+	gopkg.in/yaml.v2 v2.2.4
+)

setup/e2mgr/tools/RoutingManagerSimulator/go.sum

@@ -0,0 +1,174 @@
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+github.com/BurntSushi/toml v0.3.1/go.mod h1:xHWCNGjB5oqiDr8zfno3MHue2Ht5sIBksp03qcyfWMU=
+github.com/OneOfOne/xxhash v1.2.2/go.mod h1:HSdplMjZKSmBqAxg5vPj2TmRDmfkzw+cTzAElWljhcU=
+github.com/alecthomas/template v0.0.0-20160405071501-a0175ee3bccc/go.mod h1:LOuyumcjzFXgccqObfd/Ljyb9UuFJ6TxHnclSeseNhc=
+github.com/alecthomas/units v0.0.0-20151022065526-2efee857e7cf/go.mod h1:ybxpYRFXyAe+OPACYpWeL0wqObRcbAqCMya13uyzqw0=
+github.com/armon/consul-api v0.0.0-20180202201655-eb2c6b5be1b6/go.mod h1:grANhF5doyWs3UAsr3K4I6qtAmlQcZDesFNEHPZAzj8=
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+github.com/coreos/go-semver v0.2.0/go.mod h1:nnelYz7RCh+5ahJtPPxZlU+153eP4D4r3EedlOD2RNk=
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+github.com/ghodss/yaml v1.0.0/go.mod h1:4dBDuWmgqj2HViK6kFavaiC9ZROes6MMH2rRYeMEF04=
+github.com/go-kit/kit v0.8.0/go.mod h1:xBxKIO96dXMWWy0MnWVtmwkA9/13aqxPnvrjFYMA2as=
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+golang.org/x/tools v0.0.0-20191029041327-9cc4af7d6b2c/go.mod h1:b+2E5dAYhXwXZwtnZ6UAqBI28+e2cm9otk0dWdXHAEo=
+golang.org/x/tools v0.0.0-20191029190741-b9c20aec41a5/go.mod h1:b+2E5dAYhXwXZwtnZ6UAqBI28+e2cm9otk0dWdXHAEo=
+golang.org/x/xerrors v0.0.0-20190717185122-a985d3407aa7/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
+google.golang.org/appengine v1.1.0/go.mod h1:EbEs0AVv82hx2wNQdGPgUI5lhzA/G0D9YwlJXL52JkM=
+google.golang.org/genproto v0.0.0-20180817151627-c66870c02cf8/go.mod h1:JiN7NxoALGmiZfu7CAH4rXhgtRTLTxftemlI0sWmxmc=
+google.golang.org/grpc v1.19.0/go.mod h1:mqu4LbDTu4XGKhr4mRzUsmM4RtVoemTSY81AxZiDr8c=
+google.golang.org/grpc v1.21.0/go.mod h1:oYelfM1adQP15Ek0mdvEgi9Df8B9CZIaU1084ijfRaM=
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+gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
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+gopkg.in/errgo.v2 v2.1.0/go.mod h1:hNsd1EY+bozCKY1Ytp96fpM3vjJbqLJn88ws8XvfDNI=
+gopkg.in/ini.v1 v1.51.0 h1:AQvPpx3LzTDM0AjnIRlVFwFFGC+npRopjZxLJj6gdno=
+gopkg.in/ini.v1 v1.51.0/go.mod h1:pNLf8WUiyNEtQjuu5G5vTm06TEv9tsIgeAvK8hOrP4k=
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+gopkg.in/yaml.v2 v2.2.1/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
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+honnef.co/go/tools v0.0.0-20190102054323-c2f93a96b099/go.mod h1:rf3lG4BRIbNafJWhAfAdb/ePZxsR/4RtNHQocxwk9r4=
+honnef.co/go/tools v0.0.1-2019.2.3/go.mod h1:a3bituU0lyd329TUQxRnasdCoJDkEUEAqEt0JzvZhAg=

setup/e2mgr/tools/RoutingManagerSimulator/go/README.md

@@ -0,0 +1,25 @@
+# Go API Server for swagger
+
+This is the Swagger/OpenAPI 2.0 definition of Routing Manager's Northbound API.
+
+## Overview
+This server was generated by the [swagger-codegen]
+(https://github.com/swagger-api/swagger-codegen) project.  
+By using the [OpenAPI-Spec](https://github.com/OAI/OpenAPI-Specification) from a remote server, you can easily generate a server stub.  
+-
+
+To see how to make this your own, look here:
+
+[README](https://github.com/swagger-api/swagger-codegen/blob/master/README.md)
+
+- API version: 0.4.0
+- Build date: 2019-12-30T10:52:31.803Z
+
+
+### Running the server
+To run the server, follow these simple steps:
+
+```
+go run main.go
+```
+

setup/e2mgr/tools/RoutingManagerSimulator/go/api_handle.go

@@ -0,0 +1,79 @@
+//
+// Copyright 2019 AT&T Intellectual Property
+// Copyright 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.
+
+//  This source code is part of the near-RT RIC (RAN Intelligent Controller)
+//  platform project (RICP).
+
+
+/*
+ * Routing Manager
+ *
+ * This is the Swagger/OpenAPI 2.0 definition of Routing Manager's Northbound API.
+ *
+ * API version: 0.4.0
+ * Generated by: Swagger Codegen (https://github.com/swagger-api/swagger-codegen.git)
+ */
+
+package swagger
+
+import (
+	"net/http"
+)
+
+func AssociateRanToE2tHandle(w http.ResponseWriter, r *http.Request) {
+	w.Header().Set("Content-Type", "application/json; charset=UTF-8")
+	w.WriteHeader(http.StatusOK)
+}
+
+func CreateNewE2tHandle(w http.ResponseWriter, r *http.Request) {
+	w.Header().Set("Content-Type", "application/json; charset=UTF-8")
+	w.WriteHeader(http.StatusOK)
+}
+
+func DeleteE2tHandle(w http.ResponseWriter, r *http.Request) {
+	w.Header().Set("Content-Type", "application/json; charset=UTF-8")
+	w.WriteHeader(http.StatusOK)
+}
+
+func DeleteXappSubscriptionHandle(w http.ResponseWriter, r *http.Request) {
+	w.Header().Set("Content-Type", "application/json; charset=UTF-8")
+	w.WriteHeader(http.StatusOK)
+}
+
+func DissociateRan(w http.ResponseWriter, r *http.Request) {
+	w.Header().Set("Content-Type", "application/json; charset=UTF-8")
+	w.WriteHeader(http.StatusOK)
+}
+
+func GetHandles(w http.ResponseWriter, r *http.Request) {
+	w.Header().Set("Content-Type", "application/json; charset=UTF-8")
+	w.WriteHeader(http.StatusOK)
+}
+
+func ProvideXappHandle(w http.ResponseWriter, r *http.Request) {
+	w.Header().Set("Content-Type", "application/json; charset=UTF-8")
+	w.WriteHeader(http.StatusOK)
+}
+
+func ProvideXappSubscriptionHandle(w http.ResponseWriter, r *http.Request) {
+	w.Header().Set("Content-Type", "application/json; charset=UTF-8")
+	w.WriteHeader(http.StatusOK)
+}
+
+func UpdateXappSubscriptionHandle(w http.ResponseWriter, r *http.Request) {
+	w.Header().Set("Content-Type", "application/json; charset=UTF-8")
+	w.WriteHeader(http.StatusOK)
+}

setup/e2mgr/tools/RoutingManagerSimulator/go/api_health.go

@@ -0,0 +1,38 @@
+//
+// Copyright 2019 AT&T Intellectual Property
+// Copyright 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.
+
+//  This source code is part of the near-RT RIC (RAN Intelligent Controller)
+//  platform project (RICP).
+
+/*
+ * Routing Manager
+ *
+ * This is the Swagger/OpenAPI 2.0 definition of Routing Manager's Northbound API.
+ *
+ * API version: 0.4.0
+ * Generated by: Swagger Codegen (https://github.com/swagger-api/swagger-codegen.git)
+ */
+
+package swagger
+
+import (
+	"net/http"
+)
+
+func GetHealth(w http.ResponseWriter, r *http.Request) {
+	w.Header().Set("Content-Type", "application/json; charset=UTF-8")
+	w.WriteHeader(http.StatusOK)
+}

setup/e2mgr/tools/RoutingManagerSimulator/go/logger.go

@@ -0,0 +1,64 @@
+//
+// Copyright 2019 AT&T Intellectual Property
+// Copyright 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.
+
+//  This source code is part of the near-RT RIC (RAN Intelligent Controller)
+//  platform project (RICP).
+
+/*
+ * Routing Manager
+ *
+ * This is the Swagger/OpenAPI 2.0 definition of Routing Manager's Northbound API.
+ *
+ * API version: 0.4.0
+ * Generated by: Swagger Codegen (https://github.com/swagger-api/swagger-codegen.git)
+ */
+
+package swagger
+
+import (
+    "bytes"
+    "encoding/json"
+    "io/ioutil"
+    "log"
+    "net/http"
+    "time"
+)
+
+func Logger(inner http.Handler, name string) http.Handler {
+    return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+        start := time.Now()
+
+        inner.ServeHTTP(w, r)
+
+        body, err := ioutil.ReadAll(r.Body)
+        if err != nil {
+            log.Printf("Error reading body: %v", err)
+            http.Error(w, "can't read body", http.StatusBadRequest)
+            return
+        }
+
+        buffer := new(bytes.Buffer)
+        _ =json.Compact(buffer, body)
+
+        log.Printf(
+            "%s %s  body: %s elapsed: %s",
+            r.Method,
+            r.RequestURI,
+            buffer,
+            time.Since(start),
+        )
+    })
+}

setup/e2mgr/tools/RoutingManagerSimulator/go/model_e2t_data.go

@@ -0,0 +1,36 @@
+//
+// Copyright 2019 AT&T Intellectual Property
+// Copyright 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.
+
+//  This source code is part of the near-RT RIC (RAN Intelligent Controller)
+//  platform project (RICP).
+
+/*
+ * Routing Manager
+ *
+ * This is the Swagger/OpenAPI 2.0 definition of Routing Manager's Northbound API.
+ *
+ * API version: 0.4.0
+ * Generated by: Swagger Codegen (https://github.com/swagger-api/swagger-codegen.git)
+ */
+
+package swagger
+
+type E2tData struct {
+
+	E2TAddress string `json:"E2TAddress"`
+
+	RanNamelist *RanNamelist `json:"ranNamelist,omitempty"`
+}

setup/e2mgr/tools/RoutingManagerSimulator/go/model_e2t_delete_data.go

@@ -0,0 +1,38 @@
+//
+// Copyright 2019 AT&T Intellectual Property
+// Copyright 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.
+
+//  This source code is part of the near-RT RIC (RAN Intelligent Controller)
+//  platform project (RICP).
+
+/*
+ * Routing Manager
+ *
+ * This is the Swagger/OpenAPI 2.0 definition of Routing Manager's Northbound API.
+ *
+ * API version: 0.4.0
+ * Generated by: Swagger Codegen (https://github.com/swagger-api/swagger-codegen.git)
+ */
+
+package swagger
+
+type E2tDeleteData struct {
+
+	E2TAddress string `json:"E2TAddress"`
+
+	RanNamelistTobeDissociated *RanNamelist `json:"ranNamelistTobeDissociated,omitempty"`
+
+	RanAssocList *RanE2tMap `json:"ranAssocList,omitempty"`
+}

setup/e2mgr/tools/RoutingManagerSimulator/go/model_health_status.go

@@ -0,0 +1,34 @@
+//
+// Copyright 2019 AT&T Intellectual Property
+// Copyright 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.
+
+//  This source code is part of the near-RT RIC (RAN Intelligent Controller)
+//  platform project (RICP).
+
+/*
+ * Routing Manager
+ *
+ * This is the Swagger/OpenAPI 2.0 definition of Routing Manager's Northbound API.
+ *
+ * API version: 0.4.0
+ * Generated by: Swagger Codegen (https://github.com/swagger-api/swagger-codegen.git)
+ */
+
+package swagger
+
+type HealthStatus struct {
+
+	Status string `json:"status,omitempty"`
+}

setup/e2mgr/tools/RoutingManagerSimulator/go/model_ran_e2t_element.go

@@ -0,0 +1,36 @@
+//
+// Copyright 2019 AT&T Intellectual Property
+// Copyright 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.
+
+//  This source code is part of the near-RT RIC (RAN Intelligent Controller)
+//  platform project (RICP).
+
+/*
+ * Routing Manager
+ *
+ * This is the Swagger/OpenAPI 2.0 definition of Routing Manager's Northbound API.
+ *
+ * API version: 0.4.0
+ * Generated by: Swagger Codegen (https://github.com/swagger-api/swagger-codegen.git)
+ */
+
+package swagger
+
+type RanE2tElement struct {
+
+	E2TAddress string `json:"E2TAddress"`
+
+	RanNamelist *RanNamelist `json:"ranNamelist,omitempty"`
+}

setup/e2mgr/tools/RoutingManagerSimulator/go/model_ran_e2t_map.go

@@ -0,0 +1,32 @@
+//
+// Copyright 2019 AT&T Intellectual Property
+// Copyright 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.
+
+//  This source code is part of the near-RT RIC (RAN Intelligent Controller)
+//  platform project (RICP).
+
+/*
+ * Routing Manager
+ *
+ * This is the Swagger/OpenAPI 2.0 definition of Routing Manager's Northbound API.
+ *
+ * API version: 0.4.0
+ * Generated by: Swagger Codegen (https://github.com/swagger-api/swagger-codegen.git)
+ */
+
+package swagger
+
+type RanE2tMap struct {
+}

setup/e2mgr/tools/RoutingManagerSimulator/go/model_ran_namelist.go

@@ -0,0 +1,32 @@
+//
+// Copyright 2019 AT&T Intellectual Property
+// Copyright 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.
+
+//  This source code is part of the near-RT RIC (RAN Intelligent Controller)
+//  platform project (RICP).
+
+/*
+ * Routing Manager
+ *
+ * This is the Swagger/OpenAPI 2.0 definition of Routing Manager's Northbound API.
+ *
+ * API version: 0.4.0
+ * Generated by: Swagger Codegen (https://github.com/swagger-api/swagger-codegen.git)
+ */
+
+package swagger
+
+type RanNamelist struct {
+}

setup/e2mgr/tools/RoutingManagerSimulator/go/model_xapp_callback_data.go

@@ -0,0 +1,40 @@
+//
+// Copyright 2019 AT&T Intellectual Property
+// Copyright 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.
+
+//  This source code is part of the near-RT RIC (RAN Intelligent Controller)
+//  platform project (RICP).
+
+/*
+ * Routing Manager
+ *
+ * This is the Swagger/OpenAPI 2.0 definition of Routing Manager's Northbound API.
+ *
+ * API version: 0.4.0
+ * Generated by: Swagger Codegen (https://github.com/swagger-api/swagger-codegen.git)
+ */
+
+package swagger
+
+type XappCallbackData struct {
+
+	Id string `json:"id,omitempty"`
+
+	Event string `json:"event,omitempty"`
+
+	Version int64 `json:"version,omitempty"`
+
+	XApps string `json:"xApps,omitempty"`
+}

setup/e2mgr/tools/RoutingManagerSimulator/go/model_xapp_element.go

@@ -0,0 +1,36 @@
+//
+// Copyright 2019 AT&T Intellectual Property
+// Copyright 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.
+
+//  This source code is part of the near-RT RIC (RAN Intelligent Controller)
+//  platform project (RICP).
+
+/*
+ * Routing Manager
+ *
+ * This is the Swagger/OpenAPI 2.0 definition of Routing Manager's Northbound API.
+ *
+ * API version: 0.4.0
+ * Generated by: Swagger Codegen (https://github.com/swagger-api/swagger-codegen.git)
+ */
+
+package swagger
+
+type XappElement struct {
+
+	Address string `json:"address"`
+
+	Port int32 `json:"port"`
+}

setup/e2mgr/tools/RoutingManagerSimulator/go/model_xapp_list.go

@@ -0,0 +1,32 @@
+//
+// Copyright 2019 AT&T Intellectual Property
+// Copyright 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.
+
+//  This source code is part of the near-RT RIC (RAN Intelligent Controller)
+//  platform project (RICP).
+
+/*
+ * Routing Manager
+ *
+ * This is the Swagger/OpenAPI 2.0 definition of Routing Manager's Northbound API.
+ *
+ * API version: 0.4.0
+ * Generated by: Swagger Codegen (https://github.com/swagger-api/swagger-codegen.git)
+ */
+
+package swagger
+
+type XappList struct {
+}

setup/e2mgr/tools/RoutingManagerSimulator/go/model_xapp_subscription_data.go

@@ -0,0 +1,38 @@
+//
+// Copyright 2019 AT&T Intellectual Property
+// Copyright 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.
+
+//  This source code is part of the near-RT RIC (RAN Intelligent Controller)
+//  platform project (RICP).
+
+/*
+ * Routing Manager
+ *
+ * This is the Swagger/OpenAPI 2.0 definition of Routing Manager's Northbound API.
+ *
+ * API version: 0.4.0
+ * Generated by: Swagger Codegen (https://github.com/swagger-api/swagger-codegen.git)
+ */
+
+package swagger
+
+type XappSubscriptionData struct {
+
+	Address string `json:"address"`
+
+	Port int32 `json:"port"`
+
+	SubscriptionId int32 `json:"subscription_id"`
+}

setup/e2mgr/tools/RoutingManagerSimulator/go/routers.go

@@ -0,0 +1,146 @@
+//
+// Copyright 2019 AT&T Intellectual Property
+// Copyright 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.
+
+//  This source code is part of the near-RT RIC (RAN Intelligent Controller)
+//  platform project (RICP).
+
+/*
+ * Routing Manager
+ *
+ * This is the Swagger/OpenAPI 2.0 definition of Routing Manager's Northbound API.
+ *
+ * API version: 0.4.0
+ * Generated by: Swagger Codegen (https://github.com/swagger-api/swagger-codegen.git)
+ */
+
+package swagger
+
+import (
+	"fmt"
+	"net/http"
+	"strings"
+
+	"github.com/gorilla/mux"
+)
+
+type Route struct {
+	Name        string
+	Method      string
+	Pattern     string
+	HandlerFunc http.HandlerFunc
+}
+
+type Routes []Route
+
+func NewRouter() *mux.Router {
+	router := mux.NewRouter().StrictSlash(true)
+	for _, route := range routes {
+		var handler http.Handler
+		handler = route.HandlerFunc
+		handler = Logger(handler, route.Name)
+
+		router.
+			Methods(route.Method).
+			Path(route.Pattern).
+			Name(route.Name).
+			Handler(handler)
+	}
+
+	return router
+}
+
+func Index(w http.ResponseWriter, r *http.Request) {
+	fmt.Fprintf(w, "Hello World!")
+}
+
+var routes = Routes{
+	Route{
+		"Index",
+		"GET",
+		"/ric/v1/",
+		Index,
+	},
+
+	Route{
+		"AssociateRanToE2tHandle",
+		strings.ToUpper("Post"),
+		"/ric/v1/handles/associate-ran-to-e2t",
+		AssociateRanToE2tHandle,
+	},
+
+	Route{
+		"CreateNewE2tHandle",
+		strings.ToUpper("Post"),
+		"/ric/v1/handles/e2t",
+		CreateNewE2tHandle,
+	},
+
+	Route{
+		"DeleteE2tHandle",
+		strings.ToUpper("Delete"),
+		"/ric/v1/handles/e2t",
+		DeleteE2tHandle,
+	},
+
+	Route{
+		"DeleteXappSubscriptionHandle",
+		strings.ToUpper("Delete"),
+		"/ric/v1/handles/xapp-subscription-handle",
+		DeleteXappSubscriptionHandle,
+	},
+
+	Route{
+		"DissociateRan",
+		strings.ToUpper("Post"),
+		"/ric/v1/handles/dissociate-ran",
+		DissociateRan,
+	},
+
+	Route{
+		"GetHandles",
+		strings.ToUpper("Get"),
+		"/ric/v1/handles",
+		GetHandles,
+	},
+
+	Route{
+		"ProvideXappHandle",
+		strings.ToUpper("Post"),
+		"/ric/v1/handles/xapp-handle",
+		ProvideXappHandle,
+	},
+
+	Route{
+		"ProvideXappSubscriptionHandle",
+		strings.ToUpper("Post"),
+		"/ric/v1/handles/xapp-subscription-handle",
+		ProvideXappSubscriptionHandle,
+	},
+
+	Route{
+		"UpdateXappSubscriptionHandle",
+		strings.ToUpper("Put"),
+		"/ric/v1/handles/xapp-subscription-handle/{subscription_id}",
+		UpdateXappSubscriptionHandle,
+	},
+
+	Route{
+		"GetHealth",
+		strings.ToUpper("Get"),
+		"/ric/v1/health",
+		GetHealth,
+	},
+}

setup/e2mgr/tools/RoutingManagerSimulator/main.go

@@ -0,0 +1,49 @@
+//
+// Copyright 2019 AT&T Intellectual Property
+// Copyright 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.
+
+//  This source code is part of the near-RT RIC (RAN Intelligent Controller)
+//  platform project (RICP).
+
+
+/*
+ * Routing Manager
+ *
+ * This is the Swagger/OpenAPI 2.0 definition of Routing Manager's Northbound API.
+ *
+ * API version: 0.4.0
+ * Generated by: Swagger Codegen (https://github.com/swagger-api/swagger-codegen.git)
+ */
+
+package main
+
+import (
+	"fmt"
+	"log"
+	"net/http"
+	"rmsimulator/configuration"
+	"rmsimulator/go"
+)
+
+func main() {
+	config := configuration.ParseConfiguration()
+	port := config.Http.Port
+
+	log.Printf("Server started on port %d", port)
+
+	router := swagger.NewRouter()
+
+	log.Fatal(http.ListenAndServe(fmt.Sprintf(":%d", port), router))
+}

setup/e2mgr/tools/RoutingManagerSimulator/resources/configuration.yaml

@@ -0,0 +1,2 @@
+http:
+  port: 12020

setup/e2mgr/tools/xappmock/Dockerfile

@@ -0,0 +1,48 @@
+##############################################################################
+#
+#   Copyright (c) 2019 AT&T Intellectual Property.
+#
+#   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).
+#
+
+FROM nexus3.o-ran-sc.org:10004/bldr-ubuntu16-c-go:2-u16.04-nng as ubuntu
+
+WORKDIR /opt/xappmock
+COPY . . 
+ENV PATH=$PATH:/usr/local/go/bin:/usr/lib/go-1.12/bin
+# Install RMr library and dev files
+RUN wget --content-disposition  https://packagecloud.io/o-ran-sc/staging/packages/debian/stretch/rmr_1.10.0_amd64.deb/download.deb
+RUN dpkg -i rmr_1.10.0_amd64.deb
+RUN wget --content-disposition https://packagecloud.io/o-ran-sc/staging/packages/debian/stretch/rmr-dev_1.10.0_amd64.deb/download.deb
+RUN dpkg -i rmr-dev_1.10.0_amd64.deb
+
+RUN go build main/xappmock.go
+    
+
+
+FROM ubuntu:16.04
+COPY --from=ubuntu /opt/xappmock/xappmock /opt/xappmock/xappmock
+COPY --from=ubuntu /opt/xappmock/resources /opt/xappmock/resources
+COPY --from=ubuntu /usr/local/lib/librmr_nng.so.1 /usr/local/lib/librmr_nng.so.1
+COPY --from=ubuntu /usr/local/lib/libnng.so.1 /usr/local/lib/libnng.so.1
+WORKDIR /opt/xappmock
+ENV LD_LIBRARY_PATH=/usr/local/lib 
+ENV RMR_SEED_RT=resources/router.txt
+ENV RMR_PORT=5001
+#CMD mkdir -p resources/conf  exec ./xappmock
+CMD mkdir -p resources/conf &&  exec /bin/bash 

setup/e2mgr/tools/xappmock/dispatcher/dispatcher.go

@@ -0,0 +1,405 @@
+//  This source code is part of the near-RT RIC (RAN Intelligent Controller)
+//  platform project (RICP).
+
+// Copyright 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.
+//
+
+//  This source code is part of the near-RT RIC (RAN Intelligent Controller)
+//  platform project (RICP).
+
+package dispatcher
+
+import (
+	"context"
+	"fmt"
+	"github.com/pkg/errors"
+	"reflect"
+	"sync"
+	"time"
+	"xappmock/enums"
+	"xappmock/logger"
+	"xappmock/models"
+	"xappmock/rmr"
+	"xappmock/sender"
+)
+
+// Id -> Command
+var configuration = make(map[string]*models.JsonCommand)
+
+// Rmr Message Id -> Command
+var waitForRmrMessageType = make(map[int]*models.JsonCommand)
+
+func addRmrMessageToWaitFor(rmrMessageToWaitFor string, command models.JsonCommand) error {
+	rmrMsgId, err := rmr.MessageIdToUint(rmrMessageToWaitFor)
+
+	if err != nil {
+		return errors.New(fmt.Sprintf("invalid rmr message id: %s", rmrMessageToWaitFor))
+	}
+
+	waitForRmrMessageType[int(rmrMsgId)] = &command
+	return nil
+}
+
+type Dispatcher struct {
+	rmrService    *rmr.Service
+	processResult models.ProcessResult
+	logger        *logger.Logger
+	jsonSender    *sender.JsonSender
+}
+
+func (d *Dispatcher) GetProcessResult() models.ProcessResult {
+	return d.processResult
+}
+
+func New(logger *logger.Logger, rmrService *rmr.Service, jsonSender *sender.JsonSender) *Dispatcher {
+	return &Dispatcher{
+		rmrService: rmrService,
+		logger:     logger,
+		jsonSender: jsonSender,
+	}
+}
+
+func (d *Dispatcher) JsonCommandsDecoderCB(cmd models.JsonCommand) error {
+	if len(cmd.Id) == 0 {
+		return errors.New(fmt.Sprintf("invalid cmd, no id"))
+	}
+	configuration[cmd.Id] = &cmd
+	return nil
+
+	//	if len(cmd.ReceiveCommandId) == 0 {
+	//		return nil
+	//	}
+	//
+	//	return addRmrMessageToWaitFor(cmd.ReceiveCommandId, cmd)
+}
+
+func (d *Dispatcher) sendNoRepeat(command models.JsonCommand) error {
+
+	if enums.CommandAction(command.Action) == enums.SendRmrMessage && d.processResult.StartTime == nil {
+		now := time.Now()
+		d.processResult.StartTime = &now
+	}
+
+	err := d.jsonSender.SendJsonRmrMessage(command, nil, d.rmrService)
+
+	if err != nil {
+		d.logger.Errorf("#Dispatcher.sendNoRepeat - error sending rmr message: %s", err)
+		d.processResult.Err = err
+		d.processResult.Stats.SentErrorCount.Inc()
+		return err
+	}
+
+	d.processResult.Stats.SentCount.Inc()
+	return nil
+}
+
+func (d *Dispatcher) sendWithRepeat(ctx context.Context, command models.JsonCommand) {
+
+	if enums.CommandAction(command.Action) == enums.SendRmrMessage && d.processResult.StartTime == nil {
+		now := time.Now()
+		d.processResult.StartTime = &now
+	}
+
+	for repeatCount := command.RepeatCount; repeatCount > 0; repeatCount-- {
+
+		select {
+		case <-ctx.Done():
+			return
+		default:
+		}
+
+		err := d.jsonSender.SendJsonRmrMessage(command, nil, d.rmrService)
+
+		if err != nil {
+			d.logger.Errorf("#Dispatcher.sendWithRepeat - error sending rmr message: %s", err)
+			d.processResult.Stats.SentErrorCount.Inc()
+			continue
+		}
+
+		d.processResult.Stats.SentCount.Inc()
+		time.Sleep(time.Duration(command.RepeatDelayInMs) * time.Millisecond)
+	}
+}
+
+func getReceiveRmrMessageType(receiveCommandId string) (string, error) {
+	command, ok := configuration[receiveCommandId]
+
+	if !ok {
+		return "", errors.New(fmt.Sprintf("invalid receive command id: %s", receiveCommandId))
+	}
+
+	if len(command.RmrMessageType) == 0 {
+		return "", errors.New(fmt.Sprintf("missing RmrMessageType for command id: %s", receiveCommandId))
+	}
+
+	return command.RmrMessageType, nil
+}
+
+func (d *Dispatcher) sendHandler(ctx context.Context, sendAndReceiveWg *sync.WaitGroup, command models.JsonCommand) {
+
+	defer sendAndReceiveWg.Done()
+	var listenAndHandleWg sync.WaitGroup
+
+	if len(command.ReceiveCommandId) > 0 {
+		rmrMessageToWaitFor, err := getReceiveRmrMessageType(command.ReceiveCommandId)
+
+		if err != nil {
+			d.processResult.Err = err
+			return
+		}
+
+		err = addRmrMessageToWaitFor(rmrMessageToWaitFor, command)
+
+		if err != nil {
+			d.processResult.Err = err
+			return
+		}
+
+		listenAndHandleWg.Add(1)
+		go d.listenAndHandle(ctx, &listenAndHandleWg, command)
+	}
+
+	if command.RepeatCount == 0 {
+		err := d.sendNoRepeat(command)
+
+		if err != nil {
+			return
+		}
+
+	} else {
+		d.sendWithRepeat(ctx, command)
+	}
+
+	if len(command.ReceiveCommandId) > 0 {
+		listenAndHandleWg.Wait()
+	}
+}
+
+func (d *Dispatcher) receiveHandler(ctx context.Context, sendAndReceiveWg *sync.WaitGroup, command models.JsonCommand) {
+
+	defer sendAndReceiveWg.Done()
+
+	err := addRmrMessageToWaitFor(command.RmrMessageType, command)
+
+	if err != nil {
+		d.processResult.Err = err
+		return
+	}
+
+	var listenAndHandleWg sync.WaitGroup
+	listenAndHandleWg.Add(1) // this is due to the usage of listenAndHandle as a goroutine in the sender case
+	d.listenAndHandle(ctx, &listenAndHandleWg, command)
+}
+
+func getMergedCommand(cmd *models.JsonCommand) (models.JsonCommand, error) {
+	var command models.JsonCommand
+	if len(cmd.Id) == 0 {
+		return command, errors.New(fmt.Sprintf("invalid command, no id"))
+	}
+
+	command = *cmd
+
+	conf, ok := configuration[cmd.Id]
+
+	if ok {
+		command = *conf
+		mergeConfigurationAndCommand(&command, cmd)
+	}
+
+	return command, nil
+}
+
+func (d *Dispatcher) ProcessJsonCommand(ctx context.Context, cmd *models.JsonCommand) {
+
+	command, err := getMergedCommand(cmd)
+
+	if err != nil {
+		d.processResult.Err = err
+		return
+	}
+
+	var sendAndReceiveWg sync.WaitGroup
+
+	commandAction := enums.CommandAction(command.Action)
+
+	switch commandAction {
+
+	case enums.SendRmrMessage:
+		sendAndReceiveWg.Add(1)
+		go d.sendHandler(ctx, &sendAndReceiveWg, command)
+	case enums.ReceiveRmrMessage:
+		sendAndReceiveWg.Add(1)
+		go d.receiveHandler(ctx, &sendAndReceiveWg, command)
+	default:
+		d.processResult = models.ProcessResult{Err: errors.New(fmt.Sprintf("invalid command action %s", command.Action))}
+		return
+	}
+
+	sendAndReceiveWg.Wait()
+}
+
+func getResponseCommand(command models.JsonCommand) (*models.JsonCommand, error) {
+	responseCommand, ok := configuration[command.SendCommandId]
+
+	if !ok {
+		return nil, errors.New(fmt.Sprintf("invalid SendCommandId %s", command.SendCommandId))
+	}
+
+	return responseCommand, nil
+}
+
+func (d *Dispatcher) listenAndHandleNoRepeat(ctx context.Context, command models.JsonCommand) {
+	for {
+		select {
+		case <-ctx.Done():
+			return
+		default:
+		}
+
+		mbuf, err := d.rmrService.RecvMessage()
+
+		if err != nil {
+			d.logger.Errorf("#Dispatcher.listenAndHandleNoRepeat - error receiving message: %s", err)
+			d.processResult.Err = err
+			d.processResult.Stats.ReceivedErrorCount.Inc()
+			return
+		}
+
+		if enums.CommandAction(command.Action) == enums.ReceiveRmrMessage && d.processResult.StartTime == nil {
+			now := time.Now()
+			d.processResult.StartTime = &now
+		}
+
+		messageInfo := models.NewMessageInfo(mbuf.MType, mbuf.Meid, mbuf.Payload, mbuf.XAction)
+
+		_, ok := waitForRmrMessageType[mbuf.MType]
+
+		if !ok {
+			d.logger.Infof("#Dispatcher.listenAndHandleNoRepeat - received unexpected msg: %s", messageInfo)
+			d.processResult.Stats.ReceivedUnexpectedCount.Inc()
+			continue
+		}
+
+		d.logger.Infof("#Dispatcher.listenAndHandleNoRepeat - received expected msg: %s", messageInfo)
+		d.processResult.Stats.ReceivedExpectedCount.Inc()
+
+		if len(command.SendCommandId) > 0 {
+			responseCommand, err := getResponseCommand(command)
+
+			if err != nil {
+				d.processResult.Err = err
+				return
+			}
+
+			_ = d.sendNoRepeat(*responseCommand)
+		}
+
+		return
+	}
+}
+
+func (d *Dispatcher) listenAndHandleWithRepeat(ctx context.Context, command models.JsonCommand) {
+
+	var responseCommand *models.JsonCommand
+
+	if len(command.SendCommandId) > 0 {
+		var err error
+		responseCommand, err = getResponseCommand(command)
+
+		if err != nil {
+			d.processResult.Err = err
+			return
+		}
+	}
+
+	for d.processResult.Stats.ReceivedExpectedCount.Load() < int32(command.RepeatCount) {
+		select {
+		case <-ctx.Done():
+			return
+		default:
+		}
+
+		mbuf, err := d.rmrService.RecvMessage()
+
+		if err != nil {
+			d.logger.Errorf("#Dispatcher.listenAndHandleWithRepeat - error receiving message: %s", err)
+			d.processResult.Stats.ReceivedErrorCount.Inc()
+			continue
+		}
+
+		if enums.CommandAction(command.Action) == enums.ReceiveRmrMessage && d.processResult.StartTime == nil {
+			now := time.Now()
+			d.processResult.StartTime = &now
+		}
+
+		messageInfo := models.NewMessageInfo(mbuf.MType, mbuf.Meid, mbuf.Payload, mbuf.XAction)
+
+		_, ok := waitForRmrMessageType[mbuf.MType]
+
+		if !ok {
+			d.logger.Infof("#Dispatcher.listenAndHandleWithRepeat - received unexpected msg: %s", messageInfo)
+			d.processResult.Stats.ReceivedUnexpectedCount.Inc()
+			continue
+		}
+
+		d.logger.Infof("#Dispatcher.listenAndHandleWithRepeat - received expected msg: %s", messageInfo)
+		d.processResult.Stats.ReceivedExpectedCount.Inc()
+
+		if responseCommand != nil {
+			_ = d.sendNoRepeat(*responseCommand) // TODO: goroutine? + error handling
+		}
+	}
+}
+
+func (d *Dispatcher) listenAndHandle(ctx context.Context, listenAndHandleWg *sync.WaitGroup, command models.JsonCommand) {
+
+	defer listenAndHandleWg.Done()
+
+	if command.RepeatCount == 0 {
+		d.listenAndHandleNoRepeat(ctx, command)
+		return
+	}
+
+	d.listenAndHandleWithRepeat(ctx, command)
+}
+
+func mergeConfigurationAndCommand(conf *models.JsonCommand, cmd *models.JsonCommand) {
+	nFields := reflect.Indirect(reflect.ValueOf(cmd)).NumField()
+
+	for i := 0; i < nFields; i++ {
+		if fieldValue := reflect.Indirect(reflect.ValueOf(cmd)).Field(i); fieldValue.IsValid() {
+			switch fieldValue.Kind() {
+			case reflect.String:
+				if fieldValue.Len() > 0 {
+					reflect.Indirect(reflect.ValueOf(conf)).Field(i).Set(fieldValue)
+				}
+			case reflect.Int, reflect.Int8, reflect.Int16, reflect.Int32, reflect.Int64:
+				if fieldValue.Int() != 0 {
+					reflect.Indirect(reflect.ValueOf(conf)).Field(i).Set(fieldValue)
+				}
+			case reflect.Bool:
+				if fieldValue.Bool() {
+					reflect.Indirect(reflect.ValueOf(conf)).Field(i).Set(fieldValue)
+				}
+			case reflect.Float64, reflect.Float32:
+				if fieldValue.Float() != 0 {
+					reflect.Indirect(reflect.ValueOf(conf)).Field(i).Set(fieldValue)
+				}
+			default:
+				reflect.Indirect(reflect.ValueOf(conf)).Field(i).Set(fieldValue)
+			}
+		}
+	}
+}

setup/e2mgr/tools/xappmock/enums/command_action.go

@@ -0,0 +1,28 @@
+//
+// Copyright 2019 AT&T Intellectual Property
+// Copyright 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.
+//
+
+//  This source code is part of the near-RT RIC (RAN Intelligent Controller)
+//  platform project (RICP).
+
+package enums
+
+type CommandAction string
+
+const (
+	SendRmrMessage    CommandAction = "send"
+	ReceiveRmrMessage CommandAction = "receive"
+)

setup/e2mgr/tools/xappmock/frontend/configfile.go

@@ -0,0 +1,59 @@
+//
+// Copyright 2019 AT&T Intellectual Property
+// Copyright 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.
+
+//  This source code is part of the near-RT RIC (RAN Intelligent Controller)
+//  platform project (RICP).
+
+package frontend
+
+import (
+	"github.com/pkg/errors"
+	"io/ioutil"
+	"os"
+	"path/filepath"
+	"strings"
+)
+
+func ProcessConfigurationFile(resourcesFolder, inputFolder, suffix string, processor func(data []byte) error) error {
+	cwd, err := os.Getwd()
+	if err != nil {
+		return errors.New(err.Error())
+	}
+	inputDir := filepath.Join(cwd, resourcesFolder, inputFolder)
+
+	files, err := ioutil.ReadDir(inputDir)
+	if err != nil {
+		return errors.New(err.Error())
+	}
+
+	for _, file := range files {
+		if file.Mode().IsRegular() && strings.HasSuffix(strings.ToLower(file.Name()), suffix) {
+			filespec := filepath.Join(inputDir, file.Name())
+
+			data, err := ioutil.ReadFile(filespec)
+			if err != nil {
+				return errors.New(err.Error())
+			}
+
+			err = processor(data)
+			if err != nil {
+				return err
+			}
+		}
+	}
+
+	return nil
+}

setup/e2mgr/tools/xappmock/frontend/jsonDecoder.go

@@ -0,0 +1,57 @@
+//
+// Copyright 2019 AT&T Intellectual Property
+// Copyright 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.
+
+//  This source code is part of the near-RT RIC (RAN Intelligent Controller)
+//  platform project (RICP).
+
+package frontend
+
+import (
+	"bytes"
+	"encoding/json"
+	"fmt"
+	"github.com/pkg/errors"
+	"io"
+	"xappmock/models"
+)
+
+func DecodeJsonCommand(data []byte) (*models.JsonCommand, error) {
+	dec := json.NewDecoder(bytes.NewReader(data))
+	var cmd models.JsonCommand
+	if err := dec.Decode(&cmd); err != nil && err != io.EOF {
+		return nil, errors.New(err.Error())
+	}
+
+	return &cmd, nil
+}
+
+func JsonCommandsDecoder(data []byte, processor func(models.JsonCommand) error) error {
+	dec := json.NewDecoder(bytes.NewReader(data))
+	for {
+		var commands []models.JsonCommand
+		if err := dec.Decode(&commands); err == io.EOF {
+			break
+		} else if err != nil {
+			return errors.New(err.Error())
+		}
+		for i, cmd := range commands {
+			if err := processor(cmd); err != nil {
+				return errors.New(fmt.Sprintf("processing error at #%d, %s", i, err))
+			}
+		}
+	}
+	return nil
+}

setup/e2mgr/tools/xappmock/go.mod

@@ -0,0 +1,9 @@
+module xappmock
+
+go 1.12
+
+require (
+	github.com/pkg/errors v0.8.1
+	go.uber.org/atomic v1.5.0
+	go.uber.org/zap v1.13.0
+)

setup/e2mgr/tools/xappmock/go.sum

@@ -0,0 +1,57 @@
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setup/e2mgr/tools/xappmock/logger/logger.go

@@ -0,0 +1,187 @@
+//
+// Copyright 2019 AT&T Intellectual Property
+// Copyright 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.
+//
+
+//  This source code is part of the near-RT RIC (RAN Intelligent Controller)
+//  platform project (RICP).
+
+package logger
+
+import (
+	"fmt"
+	"go.uber.org/zap"
+	"go.uber.org/zap/zapcore"
+	"strings"
+	"time"
+)
+
+type Logger struct {
+	Logger     *zap.Logger
+}
+
+// Copied from zap logger
+//
+// A Level is a logging priority. Higher levels are more important.
+type LogLevel int8
+
+const (
+	// DebugLevel logs are typically voluminous, and are usually disabled in
+	// production.
+	DebugLevel LogLevel = iota - 1
+	// InfoLevel is the default logging priority.
+	InfoLevel
+	// WarnLevel logs are more important than Info, but don't need individual
+	// human review.
+	WarnLevel
+	// ErrorLevel logs are high-priority. If an application is running smoothly,
+	// it shouldn't generate any error-level logs.
+	ErrorLevel
+	// DPanicLevel logs are particularly important errors. In development the
+	// logger panics after writing the message.
+	DPanicLevel
+	// PanicLevel logs a message, then panics.
+	PanicLevel
+	// FatalLevel logs a message, then calls os.Exit(1).
+	FatalLevel
+
+	_minLevel = DebugLevel
+	_maxLevel = FatalLevel
+)
+
+var logLevelTokenToLevel = map[string] LogLevel {
+	"debug" : DebugLevel,
+	"info": InfoLevel,
+	"warn": WarnLevel,
+	"error": ErrorLevel,
+	"dpanic": DPanicLevel,
+	"panic": PanicLevel,
+	"fatal": FatalLevel,
+}
+
+func LogLevelTokenToLevel(level string) (LogLevel, bool) {
+	if level, ok := logLevelTokenToLevel[strings.TrimSpace(strings.ToLower(level))];ok {
+		return level, true
+	}
+	return _maxLevel+1, false
+}
+
+func InitLogger(requested LogLevel) (*Logger, error) {
+	var logger *zap.Logger
+	var err error
+	switch requested {
+	case DebugLevel:
+		logger, err = initLoggerByLevel(zapcore.DebugLevel)
+	case InfoLevel:
+		logger, err = initLoggerByLevel(zapcore.InfoLevel)
+	case WarnLevel:
+		logger, err = initLoggerByLevel(zapcore.WarnLevel)
+	case ErrorLevel:
+		logger, err = initLoggerByLevel(zapcore.ErrorLevel)
+	case DPanicLevel:
+		logger, err = initLoggerByLevel(zapcore.DPanicLevel)
+	case PanicLevel:
+		logger, err = initLoggerByLevel(zapcore.PanicLevel)
+	case FatalLevel:
+		logger, err = initLoggerByLevel(zapcore.FatalLevel)
+	default:
+		err = fmt.Errorf("Invalid logging Level :%d",requested)
+	}
+	if err != nil {
+		return nil, err
+	}
+	return &Logger{Logger:logger}, nil
+
+}
+func(l *Logger)Sync() error {
+	l.Debugf("#logger.Sync - Going to flush buffered log")
+	return l.Logger.Sync()
+}
+
+func (l *Logger)Infof(formatMsg string, a ...interface{})  {
+	if l.InfoEnabled() {
+		msg := fmt.Sprintf(formatMsg, a...)
+		l.Logger.Info(msg, zap.Any("mdc", l.getTimeStampMdc()))
+	}
+}
+
+func (l *Logger)Debugf(formatMsg string, a ...interface{})  {
+	if l.DebugEnabled(){
+		msg := fmt.Sprintf(formatMsg, a...)
+		l.Logger.Debug(msg, zap.Any("mdc", l.getTimeStampMdc()))
+	}
+}
+
+func (l *Logger)Errorf(formatMsg string, a ...interface{})  {
+	msg := fmt.Sprintf(formatMsg, a...)
+	l.Logger.Error(msg, zap.Any("mdc", l.getTimeStampMdc()))
+}
+
+func (l *Logger)Warnf(formatMsg string, a ...interface{})  {
+	msg := fmt.Sprintf(formatMsg, a...)
+	l.Logger.Warn(msg, zap.Any("mdc", l.getTimeStampMdc()))
+}
+
+func (l *Logger) getTimeStampMdc() map[string]string {
+	timeStr := time.Now().Format("2006-01-02 15:04:05.000")
+	mdc := map[string]string{"time": timeStr}
+	return mdc
+}
+
+func (l *Logger)InfoEnabled()bool{
+	return l.Logger.Core().Enabled(zap.InfoLevel)
+}
+
+func (l *Logger)DebugEnabled()bool{
+	return l.Logger.Core().Enabled(zap.DebugLevel)
+}
+
+func (l *Logger)DPanicf(formatMsg string, a ...interface{})  {
+	msg := fmt.Sprintf(formatMsg, a...)
+	l.Logger.DPanic(msg, zap.Any("mdc", l.getTimeStampMdc()))
+}
+
+func initLoggerByLevel(l zapcore.Level) (*zap.Logger, error) {
+	cfg := zap.Config{
+		Encoding:         "json",
+		Level:            zap.NewAtomicLevelAt(l),
+		OutputPaths:      []string{"stdout"},
+		ErrorOutputPaths: []string{"stderr"},
+		EncoderConfig: zapcore.EncoderConfig{
+			MessageKey: "msg",
+
+			LevelKey:    "crit",
+			EncodeLevel: zapcore.CapitalLevelEncoder,
+
+			TimeKey:    "ts",
+			EncodeTime: epochMillisIntegerTimeEncoder,
+
+			CallerKey: "id",
+			EncodeCaller: xAppMockCallerEncoder,
+		},
+	}
+	return cfg.Build()
+}
+
+func xAppMockCallerEncoder(caller zapcore.EntryCaller, enc zapcore.PrimitiveArrayEncoder) {
+	enc.AppendString("xAppMock")
+}
+
+func epochMillisIntegerTimeEncoder(t time.Time, enc zapcore.PrimitiveArrayEncoder) {
+	nanos := t.UnixNano()
+	millis := int64(nanos) / int64(time.Millisecond)
+	enc.AppendInt64(millis)
+}
+

setup/e2mgr/tools/xappmock/main/xappmock.go

@@ -0,0 +1,119 @@
+//
+// Copyright 2019 AT&T Intellectual Property
+// Copyright 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.
+//
+
+//  This source code is part of the near-RT RIC (RAN Intelligent Controller)
+//  platform project (RICP).
+
+package main
+
+import (
+	"context"
+	"flag"
+	"fmt"
+	"os"
+	"os/signal"
+	"strconv"
+	"time"
+	"xappmock/dispatcher"
+	"xappmock/frontend"
+	"xappmock/logger"
+	"xappmock/rmr"
+	"xappmock/sender"
+)
+
+const (
+	ENV_RMR_PORT     = "RMR_PORT"
+	RMR_PORT_DEFAULT = 5001
+)
+
+var rmrService *rmr.Service
+
+func main() {
+
+	logLevel, _ := logger.LogLevelTokenToLevel("info")
+	logger, err := logger.InitLogger(logLevel)
+	if err != nil {
+		fmt.Printf("#app.main - failed to initialize logger, error: %s", err)
+		os.Exit(1)
+	}
+
+	var rmrContext *rmr.Context
+	var rmrConfig = rmr.Config{Port: RMR_PORT_DEFAULT, MaxMsgSize: rmr.RMR_MAX_MSG_SIZE, MaxRetries: 10, Flags: 0}
+
+	if port, err := strconv.ParseUint(os.Getenv(ENV_RMR_PORT), 10, 16); err == nil {
+		rmrConfig.Port = int(port)
+	} else {
+		logger.Infof("#main - %s: %s, using default (%d).", ENV_RMR_PORT, err, RMR_PORT_DEFAULT)
+	}
+
+	rmrService = rmr.NewService(rmrConfig, rmrContext)
+	jsonSender := sender.NewJsonSender(logger)
+	dispatcherDesc := dispatcher.New(logger, rmrService, jsonSender)
+
+	/* Load configuration file*/
+	err = frontend.ProcessConfigurationFile("resources", "conf", ".json",
+		func(data []byte) error {
+			return frontend.JsonCommandsDecoder(data, dispatcherDesc.JsonCommandsDecoderCB)
+		})
+
+	if err != nil {
+		logger.Errorf("#main - processing error: %s", err)
+		os.Exit(1)
+	}
+
+	logger.Infof("#main - xApp Mock is up and running...")
+
+	flag.Parse()
+	cmd := flag.Arg(0) /*first remaining argument after flags have been processed*/
+
+	command, err := frontend.DecodeJsonCommand([]byte(cmd))
+
+	if err != nil {
+		logger.Errorf("#main - command decoding error: %s", err)
+		rmrService.CloseContext()
+		logger.Infof("#main - xApp Mock is down")
+		return
+	}
+
+	c := make(chan os.Signal, 1)
+	signal.Notify(c, os.Interrupt)
+	ctx, cancel := context.WithCancel(context.Background())
+
+	go func() {
+		oscall := <-c
+		logger.Infof("system call:%+v", oscall)
+		cancel()
+		rmrService.CloseContext()
+	}()
+
+	dispatcherDesc.ProcessJsonCommand(ctx, command)
+	pr := dispatcherDesc.GetProcessResult()
+
+	if pr.Err != nil {
+		logger.Errorf("#main - command processing Error: %s", pr.Err)
+	}
+
+	if pr.StartTime != nil {
+		processElapsedTimeInMs := float64(time.Since(*pr.StartTime)) / float64(time.Millisecond)
+		logger.Infof("#main - processing (sending/receiving) messages took %.2f ms", processElapsedTimeInMs)
+
+	}
+	logger.Infof("#main - process stats: %s", pr.Stats)
+
+	rmrService.CloseContext() // TODO: called twice
+	logger.Infof("#main - xApp Mock is down")
+}

setup/e2mgr/tools/xappmock/models/json_command.go

@@ -0,0 +1,38 @@
+//
+// Copyright 2019 AT&T Intellectual Property
+// Copyright 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.
+//
+
+//  This source code is part of the near-RT RIC (RAN Intelligent Controller)
+//  platform project (RICP).
+
+package models
+
+type JsonCommand struct {
+	Id               string
+	RmrMessageType   string
+	SendCommandId    string
+	ReceiveCommandId string
+	TransactionId    string
+	RanName          string
+	RanIp            string
+	RanPort          int
+	PayloadHeader    string
+	PackedPayload    string
+	Payload          string
+	Action           string
+	RepeatCount      int
+	RepeatDelayInMs  int
+}

setup/e2mgr/tools/xappmock/models/message_info.go

@@ -0,0 +1,51 @@
+//
+// Copyright 2019 AT&T Intellectual Property
+// Copyright 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.
+//
+
+//  This source code is part of the near-RT RIC (RAN Intelligent Controller)
+//  platform project (RICP).
+
+package models
+
+import (
+	"fmt"
+	"time"
+)
+
+// TODO: message command id / source / dest
+
+type MessageInfo struct {
+	MessageTimestamp int64  `json:"messageTimestamp"`
+	MessageType      int    `json:"messageType"`
+	Meid             string `json:"meid"`
+	Payload          []byte `json:"payload"`
+	TransactionId    string `json:"transactionId"`
+}
+
+func NewMessageInfo(messageType int, meid string, payload []byte, transactionId []byte) MessageInfo {
+	return MessageInfo{
+		MessageTimestamp: time.Now().Unix(),
+		MessageType:      messageType,
+		Meid:             meid,
+		Payload:          payload,
+		TransactionId:    string(transactionId),
+	}
+}
+
+func (mi MessageInfo) String() string {
+	return fmt.Sprintf("message timestamp: %d | message type: %d | meid: %s | payload: %x | transaction id: %s",
+		mi.MessageTimestamp, mi.MessageType, mi.Meid, mi.Payload, mi.TransactionId)
+}

setup/e2mgr/tools/xappmock/models/process_result.go

@@ -0,0 +1,46 @@
+//
+// Copyright 2019 AT&T Intellectual Property
+// Copyright 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.
+//
+
+//  This source code is part of the near-RT RIC (RAN Intelligent Controller)
+//  platform project (RICP).
+
+package models
+
+import (
+	"fmt"
+	"go.uber.org/atomic"
+	"time"
+)
+
+type ProcessStats struct {
+	SentCount               atomic.Int32
+	SentErrorCount          atomic.Int32
+	ReceivedExpectedCount   atomic.Int32
+	ReceivedUnexpectedCount atomic.Int32
+	ReceivedErrorCount      atomic.Int32
+}
+
+type ProcessResult struct {
+	StartTime *time.Time
+	Stats     ProcessStats
+	Err       error
+}
+
+func (ps ProcessStats) String() string {
+	return fmt.Sprintf("sent messages: %d | send errors: %d | expected received messages: %d | unexpected received messages: %d | receive errors: %d",
+		ps.SentCount, ps.SentErrorCount, ps.ReceivedExpectedCount, ps.ReceivedUnexpectedCount, ps.ReceivedErrorCount)
+}

setup/e2mgr/tools/xappmock/resources/conf/configuration.json

@@ -0,0 +1,75 @@
+[
+  {
+    "id": "X2_SETUP_REQUEST",
+    "rmrMessageType": "10060",
+    "transactionId": "e2e$",
+    "payloadHeader": "$ranIp|$ranPort|$ranName|#packedPayload|",
+    "packedPayload": "0006002a000002001500080013302300fffff000140017000001f700133023fffff0000000133023000000000001"
+  },
+  {
+    "id": "X2_SETUP_RESPONSE",
+    "rmrMessageType": "10061",
+    "packedPayload": "2006002a000002001500080002f82900007ab000140017000000630002f8290007ab00102002f829000001000133"
+  },
+  {
+    "id": "RIC_SUBSCRIPTION_REQUEST",
+    "rmrMessageType": "12010",
+    "transactionId": "e2e$",
+    "packedPayload": "00c9002b000003ea7e0005004eec0182ea6300020001ea810015000a0011121300212224264000ea6b000420000000"
+  },
+  {
+    "id": "RIC_SUBSCRIPTION_RESPONSE",
+    "rmrMessageType": "12011",
+    "transactionId": "e2e$",
+    "packedPayload": "20c9001d000003ea7e0005004eec0182ea6300020001ea6c000700ea6d40020000"
+  },
+  {
+    "id": "RIC_SUBSCRIPTION_FAILURE",
+    "rmrMessageType": "12012",
+    "transactionId": "e2e$",
+    "packedPayload": "40c9001f000003ea7e00050000010001ea6300020000ea6e000908ea6f400400014100"
+  },
+  {
+    "id": "RIC_SUBSCRIPTION_DELETE_REQUEST",
+    "rmrMessageType": "12020",
+    "transactionId": "e2e$",
+    "packedPayload": "00ca0012000002ea7e0005004eec0182ea6300020001"
+  },
+  {
+    "id": "RIC_SUBSCRIPTION_DELETE_RESPONSE",
+    "rmrMessageType": "12021",
+    "transactionId": "e2e$",
+    "packedPayload": "20ca0012000002ea7e0005004eec0182ea6300020001"
+  },
+  {
+    "id": "RIC_INDICATION",
+    "rmrMessageType": "12050"
+  },
+  {
+    "id": "RESOURCE_STATUS_REQUEST",
+    "rmrMessageType": "10090",
+    "transactionId": "e2e$",
+    "packedPayload": "0009003c0000080027000300000e001c00010000260004fe000000001d400d00001f4008000a0b0cabcd8000001e4001000040400100006d4001000091400100"
+  },
+  {
+    "id": "RESOURCE_STATUS_RESPONSE",
+    "rmrMessageType": "10091",
+    "transactionId": "e2e$",
+    "packedPayload": "20090065000003002700030000000028000300004a00414050000042404b4013302302b030a2800043400700020000000a000043400700040000000a000043400700080000000a000043400700200000000a000043400700400000000a000043400700800000000a00"
+  },
+  {
+    "id": "RESOURCE_STATUS_FAILURE",
+    "rmrMessageType": "10092",
+    "transactionId": "e2e$",
+    "packedPayload": "400900320000040027000300000e0028000300000c00054001620044401800004540130002f8290007ab500000434006000000000740"
+  },
+  {
+    "id": "RESOURCE_STATUS_UPDATE",
+    "rmrMessageType": "10090"
+  },
+  {
+    "id": "LOAD_INFORMATION",
+    "rmrMessageType": "10020"
+  }
+]
+

setup/e2mgr/tools/xappmock/resources/router.txt

@@ -0,0 +1,29 @@
+newrt|start
+rte|10060|10.0.2.15:38000
+rte|10360|10.0.2.15:38000
+rte|10070|10.0.2.15:38000
+rte|10071|10.0.2.15:3801
+rte|10061|10.0.2.15:3801
+rte|10361|10.0.2.15:3801
+rte|10062|10.0.2.15:3801
+rte|10362|10.0.2.15:3801
+rte|1080|10.0.2.15:3801
+rte|10020|10.0.2.15:5557
+rte|10370|10.0.2.15:3801
+rte|10371|10.0.2.15:38000
+rte|10372|10.0.2.15:38000
+rte|10080|10.0.2.15:3801
+rte|10081|10.0.2.15:38000
+rte|10082|10.0.2.15:38000
+rte|1100|10.0.2.15:3801
+rte|1090|10.0.2.15:38000
+rte|1200|10.0.2.15:4801
+rte|1210|10.0.2.15:4801
+rte|1220|10.0.2.15:4801
+rte|10090|10.0.2.15:38000
+rte|12010|10.0.2.15:38000
+rte|12011|10.0.2.15:5555
+rte|12020|10.0.2.15:38000
+rte|10091|10.0.2.15:4801
+rte|10092|10.0.2.15:4801
+newrt|end

setup/e2mgr/tools/xappmock/resp

@@ -0,0 +1 @@
+20060043000002001500080002f82900007a8000140030010000630002f8290007ab50102002f8290000010001330000640002f9290007ac50203202f82902f929000002000344

setup/e2mgr/tools/xappmock/rmr/rmrCgoApi.go

@@ -0,0 +1,106 @@
+//
+// Copyright 2019 AT&T Intellectual Property
+// Copyright 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.
+
+//  This source code is part of the near-RT RIC (RAN Intelligent Controller)
+//  platform project (RICP).
+
+
+package rmr
+
+// #cgo LDFLAGS: -L/usr/local/lib -lrmr_nng -lnng
+// #include <rmr/rmr.h>
+// #include <stdlib.h>
+import "C"
+import (
+	"fmt"
+	"github.com/pkg/errors"
+	"time"
+	"unsafe"
+)
+
+func (*Context) Init(port string, maxMsgSize int, maxRetries int, flags int) *Messenger {
+	pp := C.CString(port)
+	defer C.free(unsafe.Pointer(pp))
+	ctx := NewContext(maxMsgSize, maxRetries, flags, C.rmr_init(pp, C.int(maxMsgSize), C.int(flags)))
+	start := time.Now()
+	for !ctx.IsReady() {
+		time.Sleep(time.Second)
+		if time.Since(start) >= time.Minute {
+			start = time.Now()
+		}
+	}
+	// Configure the rmr to make rounds of attempts to send a message before notifying the application that it should retry.
+	// Each round is about 1000 attempts with a short sleep between each round.
+	C.rmr_set_stimeout(ctx.RmrCtx, C.int(0))
+	r := Messenger(ctx)
+	return &r
+}
+
+func (ctx *Context) SendMsg(msg *MBuf) (*MBuf, error) {
+
+	allocatedCMBuf, err := ctx.getAllocatedCRmrMBuf(msg, ctx.MaxMsgSize)
+	if err != nil {
+		return nil, err
+	}
+	if state := allocatedCMBuf.state; state != RMR_OK {
+		errorMessage := fmt.Sprintf("#rmrCgoApi.SendMsg - Failed to get allocated message. state: %v - %s", state, states[int(state)])
+		return nil, errors.New(errorMessage)
+	}
+	defer C.rmr_free_msg(allocatedCMBuf)
+
+	for i := 0; i < ctx.MaxRetries; i++ {
+		currCMBuf := C.rmr_send_msg(ctx.RmrCtx, allocatedCMBuf)
+		if state := currCMBuf.state; state != RMR_OK {
+			if state != RMR_ERR_RETRY {
+				errorMessage := fmt.Sprintf("#rmrCgoApi.SendMsg - Failed to send message. state: %v - %s", state, states[int(state)])
+				return nil, errors.New(errorMessage)
+			}
+			time.Sleep(100 * time.Millisecond)
+			continue
+		}
+		return convertToMBuf(currCMBuf)
+	}
+
+	return nil, errors.New(fmt.Sprintf("#rmrCgoApi.SendMsg - Too many retries"))
+}
+
+func (ctx *Context) RecvMsg() (*MBuf, error) {
+	allocatedCMBuf, err := C.rmr_alloc_msg(ctx.RmrCtx, C.int(ctx.MaxMsgSize))
+	if err != nil {
+		return nil, err
+	}
+	if state := allocatedCMBuf.state; state != RMR_OK {
+		errorMessage := fmt.Sprintf("#rmrCgoApi.SendMsg - Failed to get allocated message. state: %v - %s", state, states[int(state)])
+		return nil, errors.New(errorMessage)
+	}
+	defer C.rmr_free_msg(allocatedCMBuf)
+
+	currCMBuf := C.rmr_rcv_msg(ctx.RmrCtx, allocatedCMBuf)
+	if state := currCMBuf.state; state != RMR_OK {
+		errorMessage := fmt.Sprintf("#rmrCgoApi.RecvMsg - Failed to receive message. state: %v - %s", state, states[int(state)])
+		return nil, errors.New(errorMessage)
+	}
+
+	return convertToMBuf(currCMBuf)
+}
+
+func (ctx *Context) IsReady() bool {
+	return int(C.rmr_ready(ctx.RmrCtx)) != 0
+}
+
+func (ctx *Context) Close() {
+	C.rmr_close(ctx.RmrCtx)
+}

setup/e2mgr/tools/xappmock/rmr/rmrCgoTypes.go

@@ -0,0 +1,124 @@
+//
+// Copyright 2019 AT&T Intellectual Property
+// Copyright 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.
+
+//  This source code is part of the near-RT RIC (RAN Intelligent Controller)
+//  platform project (RICP).
+
+
+package rmr
+
+// #cgo LDFLAGS: -L/usr/local/lib -lrmr_nng -lnng
+// #include <rmr/rmr.h>
+// #include <stdlib.h>
+import "C"
+import (
+	"fmt"
+	"unsafe"
+)
+
+func NewMBuf(mType int, len int, payload []byte, xAction []byte) *MBuf {
+	return &MBuf{
+		MType:   mType,
+		Len:     len,
+		Payload: payload,
+		XAction: xAction,
+	}
+}
+
+func NewContext(maxMsgSize int, maxRetries, flags int, ctx unsafe.Pointer) *Context {
+	return &Context{
+		MaxMsgSize: maxMsgSize,
+		MaxRetries: maxRetries,
+		Flags:      flags,
+		RmrCtx:     ctx,
+	}
+}
+
+const (
+	RMR_MAX_XACTION_LEN = int(C.RMR_MAX_XID)
+	RMR_MAX_MSG_SIZE    = int(C.RMR_MAX_RCV_BYTES)
+	RMR_MAX_MEID_LEN    = int(C.RMR_MAX_MEID)
+
+	//states
+	RMR_OK             = C.RMR_OK
+	RMR_ERR_BADARG     = C.RMR_ERR_BADARG
+	RMR_ERR_NOENDPT    = C.RMR_ERR_NOENDPT
+	RMR_ERR_EMPTY      = C.RMR_ERR_EMPTY
+	RMR_ERR_NOHDR      = C.RMR_ERR_NOHDR
+	RMR_ERR_SENDFAILED = C.RMR_ERR_SENDFAILED
+	RMR_ERR_CALLFAILED = C.RMR_ERR_CALLFAILED
+	RMR_ERR_NOWHOPEN   = C.RMR_ERR_NOWHOPEN
+	RMR_ERR_WHID       = C.RMR_ERR_WHID
+	RMR_ERR_OVERFLOW   = C.RMR_ERR_OVERFLOW
+	RMR_ERR_RETRY      = C.RMR_ERR_RETRY
+	RMR_ERR_RCVFAILED  = C.RMR_ERR_RCVFAILED
+	RMR_ERR_TIMEOUT    = C.RMR_ERR_TIMEOUT
+	RMR_ERR_UNSET      = C.RMR_ERR_UNSET
+	RMR_ERR_TRUNC      = C.RMR_ERR_TRUNC
+	RMR_ERR_INITFAILED = C.RMR_ERR_INITFAILED
+)
+
+var states = map[int]string{
+	RMR_OK:             "state is good",
+	RMR_ERR_BADARG:     "argument passd to function was unusable",
+	RMR_ERR_NOENDPT:    "send/call could not find an endpoint based on msg type",
+	RMR_ERR_EMPTY:      "msg received had no payload; attempt to send an empty message",
+	RMR_ERR_NOHDR:      "message didn't contain a valid header",
+	RMR_ERR_SENDFAILED: "send failed; errno has nano reason",
+	RMR_ERR_CALLFAILED: "unable to send call() message",
+	RMR_ERR_NOWHOPEN:   "no wormholes are open",
+	RMR_ERR_WHID:       "wormhole id was invalid",
+	RMR_ERR_OVERFLOW:   "operation would have busted through a buffer/field size",
+	RMR_ERR_RETRY:      "request (send/call/rts) failed, but caller should retry (EAGAIN for wrappers)",
+	RMR_ERR_RCVFAILED:  "receive failed (hard error)",
+	RMR_ERR_TIMEOUT:    "message processing call timed out",
+	RMR_ERR_UNSET:      "the message hasn't been populated with a transport buffer",
+	RMR_ERR_TRUNC:      "received message likely truncated",
+	RMR_ERR_INITFAILED: "initialisation of something (probably message) failed",
+}
+
+type MBuf struct {
+	MType   int
+	Len     int
+	Meid    string //Managed entity id (RAN name)*/
+	Payload []byte
+	XAction []byte
+}
+
+func (m MBuf) String() string {
+	return fmt.Sprintf("{ MType: %d, Len: %d, Meid: %q, Xaction: %q, Payload: [%x] }", m.MType, m.Len, m.Meid, m.XAction, m.Payload)
+}
+
+type Context struct {
+	MaxMsgSize int
+	MaxRetries int
+	Flags      int
+	RmrCtx     unsafe.Pointer
+}
+
+type Messenger interface {
+	Init(port string, maxMsgSize int, maxRetries int, flags int) *Messenger
+	SendMsg(msg *MBuf) (*MBuf, error)
+	RecvMsg() (*MBuf, error)
+	IsReady() bool
+	Close()
+}
+type Config struct {
+	Port       int
+	MaxMsgSize int
+	MaxRetries int
+	Flags      int
+}

setup/e2mgr/tools/xappmock/rmr/rmrCgoUtils.go

@@ -0,0 +1,119 @@
+//
+// Copyright 2019 AT&T Intellectual Property
+// Copyright 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.
+
+//  This source code is part of the near-RT RIC (RAN Intelligent Controller)
+//  platform project (RICP).
+
+
+package rmr
+
+// #cgo LDFLAGS: -L/usr/local/lib -lrmr_nng -lnng
+// #include <rmr/rmr.h>
+// #include <stdlib.h>
+import "C"
+import (
+	"bytes"
+	"encoding/binary"
+	"fmt"
+	"github.com/pkg/errors"
+	"strconv"
+	"strings"
+	"unsafe"
+)
+
+/*
+Allocates an mBuf and initialize it with the content of C.rmr_mbuf_t.
+The xAction field is assigned a a value without trailing spaces.
+*/
+func convertToMBuf(m *C.rmr_mbuf_t) (*MBuf, error) {
+	payloadArr := C.GoBytes(unsafe.Pointer(m.payload), C.int(m.len))
+	xActionArr := C.GoBytes(unsafe.Pointer(m.xaction), C.int(RMR_MAX_XACTION_LEN))
+
+	// Trim padding (space and 0)
+	xActionStr := strings.TrimRight(string(xActionArr), "\040\000")
+	xActionArr = []byte(xActionStr)
+
+	mbuf := &MBuf{
+		MType: int(m.mtype),
+		Len:   int(m.len),
+		//Payload: (*[]byte)(unsafe.Pointer(m.payload)),
+		Payload: payloadArr,
+		//XAction: (*[]byte)(unsafe.Pointer(m.xaction)),
+		XAction: xActionArr,
+	}
+
+	meidBuf := make([]byte, RMR_MAX_MEID_LEN)
+	if meidCstr := C.rmr_get_meid(m, (*C.uchar)(unsafe.Pointer(&meidBuf[0]))); meidCstr != nil {
+		mbuf.Meid = strings.TrimRight(string(meidBuf), "\000")
+	}
+
+	return mbuf, nil
+}
+
+/*
+Allocates an C.rmr_mbuf_t and initialize it with the content of mBuf.
+The xAction field is padded with trailing spaces upto capacity
+*/
+func (ctx *Context) getAllocatedCRmrMBuf(mBuf *MBuf, maxMsgSize int) (cMBuf *C.rmr_mbuf_t, rc error) {
+	var xActionBuf [RMR_MAX_XACTION_LEN]byte
+	var meidBuf [RMR_MAX_MEID_LEN]byte
+
+	cMBuf = C.rmr_alloc_msg(ctx.RmrCtx, C.int(maxMsgSize))
+	cMBuf.mtype = C.int(mBuf.MType)
+	cMBuf.len = C.int(mBuf.Len)
+
+	payloadLen := len(mBuf.Payload)
+	xActionLen := len(mBuf.XAction)
+
+	copy(xActionBuf[:], mBuf.XAction)
+	for i := xActionLen; i < RMR_MAX_XACTION_LEN; i++ {
+		xActionBuf[i] = '\040' //space
+	}
+
+	// Add padding
+	copy(meidBuf[:], mBuf.Meid)
+	for i := len(mBuf.Meid); i < RMR_MAX_MEID_LEN; i++ {
+		meidBuf[i] = 0
+	}
+
+	payloadArr := (*[1 << 30]byte)(unsafe.Pointer(cMBuf.payload))[:payloadLen:payloadLen]
+	xActionArr := (*[1 << 30]byte)(unsafe.Pointer(cMBuf.xaction))[:RMR_MAX_XACTION_LEN:RMR_MAX_XACTION_LEN]
+
+	err := binary.Read(bytes.NewReader(mBuf.Payload), binary.LittleEndian, payloadArr)
+	if err != nil {
+		return nil, errors.New(fmt.Sprintf("#rmrCgoUtils.getAllocatedCRmrMBuf - Failed to read payload to allocated RMR message buffer, %s", err))
+	}
+	err = binary.Read(bytes.NewReader(xActionBuf[:]), binary.LittleEndian, xActionArr)
+	if err != nil {
+		return nil, errors.New(fmt.Sprintf("#rmrCgoUtils.getAllocatedCRmrMBuf - Failed to read xAction data to allocated RMR message buffer, %s", err))
+	}
+
+	len := C.rmr_bytes2meid(cMBuf, (*C.uchar)(unsafe.Pointer(&meidBuf[0])), C.int(RMR_MAX_XACTION_LEN))
+	if int(len) != RMR_MAX_MEID_LEN {
+		return nil, errors.New(
+			"#rmrCgoUtils.getAllocatedCRmrMBuf - Failed to copy meid data to allocated RMR message buffer")
+	}
+	return cMBuf, nil
+}
+
+func MessageIdToUint(id string) (msgId uint64, err error) {
+	if len(id) == 0 {
+		msgId, err = 0, nil
+	} else {
+		msgId, err = strconv.ParseUint(id, 10, 16)
+	}
+	return
+}

setup/e2mgr/tools/xappmock/rmr/rmrEndPoint.go

@@ -0,0 +1,51 @@
+//
+// Copyright 2019 AT&T Intellectual Property
+// Copyright 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.
+
+//  This source code is part of the near-RT RIC (RAN Intelligent Controller)
+//  platform project (RICP).
+
+package rmr
+
+import (
+	"strconv"
+)
+
+// RmrService holds an instance of RMR messenger as well as its configuration
+type Service struct {
+	messenger *Messenger
+}
+
+// NewRmrService instantiates a new Rmr service instance
+func NewService(rmrConfig Config, messenger Messenger) *Service {
+	return &Service{
+		messenger: messenger.Init("tcp:"+strconv.Itoa(rmrConfig.Port), rmrConfig.MaxMsgSize, rmrConfig.MaxRetries, rmrConfig.Flags),
+	}
+}
+
+func (r *Service) SendMessage(messageType int, ranName string, msg []byte, transactionId []byte) (*MBuf, error) {
+	mbuf := NewMBuf(messageType, len(msg), msg, transactionId)
+	mbuf.Meid = ranName
+	return (*r.messenger).SendMsg(mbuf)
+}
+
+func (r *Service) RecvMessage() (*MBuf, error) {
+	return (*r.messenger).RecvMsg()
+}
+
+func (r *Service) CloseContext() {
+	(*r.messenger).Close()
+
+}

setup/e2mgr/tools/xappmock/sender/jsonSender.go

@@ -0,0 +1,179 @@
+//  This source code is part of the near-RT RIC (RAN Intelligent Controller)
+//  platform project (RICP).
+
+// Copyright 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.
+//
+
+//  This source code is part of the near-RT RIC (RAN Intelligent Controller)
+//  platform project (RICP).
+
+package sender
+
+import (
+	"fmt"
+	"github.com/pkg/errors"
+	"os"
+	"reflect"
+	"strconv"
+	"strings"
+	"sync/atomic"
+	"time"
+	"unicode"
+	"xappmock/logger"
+	"xappmock/models"
+	"xappmock/rmr"
+)
+
+var counter uint64
+
+type JsonSender struct {
+	logger *logger.Logger
+}
+
+func NewJsonSender(logger *logger.Logger) *JsonSender {
+	return &JsonSender{
+		logger: logger,
+	}
+}
+
+func (s *JsonSender) SendJsonRmrMessage(command models.JsonCommand /*the copy is modified locally*/, xAction *[]byte, r *rmr.Service) error {
+	var payload []byte
+	_, err := fmt.Sscanf(command.PackedPayload, "%x", &payload)
+	if err != nil {
+		return errors.New(fmt.Sprintf("convert inputPayloadAsStr to payloadAsByte. Error: %v\n", err))
+	}
+	command.PackedPayload = string(payload)
+	command.TransactionId = expandTransactionId(command.TransactionId)
+	if len(command.TransactionId) == 0 {
+		command.TransactionId = string(*xAction)
+	}
+	command.PayloadHeader = s.expandPayloadHeader(command.PayloadHeader, &command)
+	s.logger.Infof("#JsonSender.SendJsonRmrMessage - command payload header: %s", command.PayloadHeader)
+	rmrMsgId, err := rmr.MessageIdToUint(command.RmrMessageType)
+	if err != nil {
+		return errors.New(fmt.Sprintf("invalid rmr message id: %s", command.RmrMessageType))
+	}
+
+	msg := append([]byte(command.PayloadHeader), payload...)
+	messageInfo := models.NewMessageInfo(int(rmrMsgId), command.RanName, msg, []byte(command.TransactionId))
+	s.logger.Infof("#JsonSender.SendJsonRmrMessage - going to send message: %s", messageInfo)
+
+	_, err = r.SendMessage(int(rmrMsgId), command.RanName, msg, []byte(command.TransactionId))
+	return err
+}
+
+/*
+ * transactionId (xAction): The value may have a fixed value or $ or <prefix>$.
+ * $ is replaced by a value generated at runtime (possibly unique per message sent).
+ * If the tag does not exist, then the mock shall use the value taken from the incoming message.
+ */
+func expandTransactionId(id string) string {
+	if len(id) == 1 && id[0] == '$' {
+		return fmt.Sprintf("%d", incAndGetCounter())
+	}
+	if len(id) > 1 && id[len(id)-1] == '$' {
+		return fmt.Sprintf("%s%d", id[:len(id)-1], incAndGetCounter())
+	}
+	return id
+}
+
+/*
+ * payloadHeader: A prefix to combine with the payload that will be the message’s payload. The value may include variables of the format $<name> or #<name> where:
+ *   $<name> expands to the value of <name> if it exists or the empty string if not.
+ *   #<name> expands to the length of the value of <name> if it exists or omitted if not.
+ * The intention is to allow the Mock to construct the payload header required by the setup messages (ranIp|ranPort|ranName|payload len|<payload>).
+ * Example: “payloadHeader”: “$ranIp|$ranPort|$ranName|#packedPayload|”
+ */
+
+func (s *JsonSender) expandPayloadHeader(header string, command *models.JsonCommand) string {
+	var name strings.Builder
+	var expandedHeader strings.Builder
+
+	r := strings.NewReader(header)
+	ch, err := r.ReadByte()
+	for {
+		if err != nil {
+			break
+		}
+
+		switch ch {
+		case '$':
+			for {
+				ch, err = r.ReadByte() //on error ch == 0
+				if unicode.IsDigit(rune(ch)) || unicode.IsLetter(rune(ch)) {
+					if name.Len() == 0 {
+						name.WriteByte(byte(unicode.ToUpper(rune(ch))))
+					} else {
+						name.WriteByte(ch)
+					}
+				} else {
+					if fieldValue := reflect.Indirect(reflect.ValueOf(command)).FieldByName(name.String()); fieldValue.IsValid() {
+						switch fieldValue.Kind() {
+						case reflect.String:
+							expandedHeader.WriteString(fieldValue.String())
+						case reflect.Int, reflect.Int8, reflect.Int16, reflect.Int32, reflect.Int64:
+							expandedHeader.WriteString(strconv.FormatInt(fieldValue.Int(), 10))
+						case reflect.Bool:
+							expandedHeader.WriteString(strconv.FormatBool(fieldValue.Bool()))
+						case reflect.Float64, reflect.Float32:
+							expandedHeader.WriteString(fmt.Sprintf("%g", fieldValue.Float()))
+						default:
+							s.logger.Errorf("#JsonSender.expandPayloadHeader - invalid type for $%s, value must be a string, an int, a bool or a float", name.String())
+							os.Exit(1)
+						}
+					}
+					name.Reset()
+					break
+				}
+			}
+		case '#':
+			for {
+				ch, err = r.ReadByte() //on error ch == 0
+				if unicode.IsDigit(rune(ch)) || unicode.IsLetter(rune(ch)) {
+					if name.Len() == 0 {
+						name.WriteByte(byte(unicode.ToUpper(rune(ch))))
+					} else {
+						name.WriteByte(ch)
+					}
+				} else {
+					if fieldValue := reflect.Indirect(reflect.ValueOf(command)).FieldByName(name.String()); fieldValue.IsValid() {
+						if fieldValue.Kind() == reflect.String {
+							expandedHeader.WriteString(strconv.FormatInt(int64(len(fieldValue.String())), 10))
+						} else {
+							s.logger.Errorf("#JsonSender.expandPayloadHeader - invalid type for #%s, value must be a string", name.String())
+							os.Exit(1)
+						}
+					}
+					name.Reset()
+					break
+				}
+			}
+		default:
+			if unicode.IsPrint(rune(ch)) {
+				expandedHeader.WriteByte(ch)
+			}
+			ch, err = r.ReadByte()
+		}
+	}
+	return expandedHeader.String()
+}
+
+func incAndGetCounter() uint64 {
+	return atomic.AddUint64(&counter, 1)
+}
+
+func init() {
+	counter = uint64(time.Now().Unix() - 1572000000)
+}