InstallApp Grpc proto and server for rsync

Add the InstallApp GRPC proto file server code
to the resource synchronizer.

Issue-ID: MULTICLOUD-1005
Signed-off-by: Manjunath Ranganathaiah <manjunath.ranganathaiah@intel.com>
Change-Id: I8e586f1b878009fd4df53ef48aae6deded0f64ea

1 files changed, 97 insertions, 0 deletions

diff --git a/src/rsync/pkg/grpc/register.go b/src/rsync/pkg/grpc/register.go
new file mode 100644
index 00000000..4755256f
--- /dev/null
+++ b/src/rsync/pkg/grpc/register.go
@@ -0,0 +1,97 @@
+/*
+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"
+	module "github.com/onap/multicloud-k8s/src/orchestrator/pkg/module"
+)
+
+const default_host = "localhost"
+const default_port = 9031
+const default_rsync_name = "rsync"
+const ENV_RSYNC_NAME = "RSYNC_NAME"
+
+func GetServerHostPort() (string, int) {
+
+	// expect name of this rsync program to be in env variable "RSYNC_NAME" - e.g. RSYNC_NAME="rsync"
+	serviceName := os.Getenv(ENV_RSYNC_NAME)
+	if serviceName == "" {
+		serviceName = default_rsync_name
+		log.Info("Using default name for RSYNC service name", log.Fields{
+			"Name": serviceName,
+		})
+	}
+
+	// expect service name to be in env variable - e.g. RSYNC_SERVICE_HOST
+	host := os.Getenv(strings.ToUpper(serviceName) + "_SERVICE_HOST")
+	if host == "" {
+		host = default_host
+		log.Info("Using default host for rsync gRPC controller", log.Fields{
+			"Host": host,
+		})
+	}
+
+	// expect service port to be in env variable - e.g. RSYNC_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 rsync gRPC controller", log.Fields{
+			"Port": port,
+		})
+	}
+	return host, port
+}
+
+func RegisterGrpcServer(host string, port int) error {
+	// expect name of this rsync program to be in env variable "RSYNC_NAME" - e.g. RSYNC_NAME="rsync"
+	// This will be the name of the controller that is registered in the orchestrator controller API
+	// This same name will be used as the key name for intents in the deployment intent group
+	serviceName := os.Getenv(ENV_RSYNC_NAME)
+	if serviceName == "" {
+		serviceName = default_rsync_name
+		log.Info("Using default name for rsync service name", log.Fields{
+			"Name": serviceName,
+		})
+	}
+
+	client := module.NewControllerClient()
+
+	// Create or update the controller entry
+	controller := module.Controller{
+		Metadata: module.Metadata{
+			Name: serviceName,
+		},
+		Spec: module.ControllerSpec{
+			Host:     host,
+			Port:     port,
+			Type:     module.CONTROLLER_TYPE_ACTION,
+			Priority: module.MinControllerPriority,
+		},
+	}
+	_, err := client.CreateController(controller, true)
+	if err != nil {
+		log.Error("Failed to create/update a gRPC controller", log.Fields{
+			"Error":      err,
+			"Controller": serviceName,
+		})
+		return err
+	}
+
+	return nil
+}