Add gRPC servers to ncm service

Add a contextupdate grpc server to the ncm service.

Issue-ID: MULTICLOUD-1029
Signed-off-by: Eric Multanen <eric.w.multanen@intel.com>
Change-Id: I38caa625c028baac06a6202f03b86d0f2bf38126

2 files changed, 103 insertions, 0 deletions

diff --git a/src/ncm/pkg/grpc/contextupdateserver/contextupdateserver.go b/src/ncm/pkg/grpc/contextupdateserver/contextupdateserver.go
new file mode 100644
index 00000000..fc548ccc
--- /dev/null
+++ b/src/ncm/pkg/grpc/contextupdateserver/contextupdateserver.go
@@ -0,0 +1,45 @@
+/*
+Copyright 2020 Intel Corporation.
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+    http://www.apache.org/licenses/LICENSE-2.0
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+package contextupdateserver
+
+import (
+	"context"
+	"encoding/json"
+	"log"
+
+	contextpb "github.com/onap/multicloud-k8s/src/orchestrator/pkg/grpc/contextupdate"
+	//"google.golang.org/grpc/codes"
+	//"google.golang.org/grpc/status"
+)
+
+type contextupdateServer struct {
+	contextpb.UnimplementedContextupdateServer
+}
+
+func (cs *contextupdateServer) UpdateAppContext(ctx context.Context, req *contextpb.ContextUpdateRequest) (*contextpb.ContextUpdateResponse, error) {
+	contextUpdateReq, _ := json.Marshal(req)
+	log.Println("GRPC Server received contextupdateRequest: ", string(contextUpdateReq))
+
+	// Insert call to Server Functionality here
+	//
+	//
+
+	return &contextpb.ContextUpdateResponse{AppContextUpdated: true}, nil
+}
+
+// NewContextUpdateServer exported
+func NewContextupdateServer() *contextupdateServer {
+	s := &contextupdateServer{}
+	return s
+}
diff --git a/src/ncm/pkg/grpc/register.go b/src/ncm/pkg/grpc/register.go
new file mode 100644
index 00000000..07d8f5c0
--- /dev/null
+++ b/src/ncm/pkg/grpc/register.go
@@ -0,0 +1,58 @@
+/*
+Copyright 2020 Intel Corporation.
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+    http://www.apache.org/licenses/LICENSE-2.0
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+package grpc
+
+import (
+	"os"
+	"strconv"
+	"strings"
+
+	log "github.com/onap/multicloud-k8s/src/orchestrator/pkg/infra/logutils"
+)
+
+const default_host = "localhost"
+const default_port = 9030
+const default_ncm_name = "ncm"
+const ENV_NCM_NAME = "NCM_NAME"
+
+func GetServerHostPort() (string, int) {
+
+	// expect name of this ncm program to be in env variable "NCM_NAME" - e.g. NCM_NAME="ncm"
+	serviceName := os.Getenv(ENV_NCM_NAME)
+	if serviceName == "" {
+		serviceName = default_ncm_name
+		log.Info("Using default name for NCM service name", log.Fields{
+			"Name": serviceName,
+		})
+	}
+
+	// expect service name to be in env variable - e.g. NCM_SERVICE_HOST
+	host := os.Getenv(strings.ToUpper(serviceName) + "_SERVICE_HOST")
+	if host == "" {
+		host = default_host
+		log.Info("Using default host for ncm gRPC controller", log.Fields{
+			"Host": host,
+		})
+	}
+
+	// expect service port to be in env variable - e.g. NCM_SERVICE_PORT
+	port, err := strconv.Atoi(os.Getenv(strings.ToUpper(serviceName) + "_SERVICE_PORT"))
+	if err != nil || port < 0 {
+		port = default_port
+		log.Info("Using default port for ncm gRPC controller", log.Fields{
+			"Port": port,
+		})
+	}
+	return host, port
+}