add inventory package

Signed-off-by: Boris Glimcher <Boris.Glimcher@emc.com>

Dockerfile

@@ -12,5 +12,5 @@ COPY go.sum ./
 RUN go mod download
 
 # build an app
-COPY *.go ./
-RUN go build -v
+COPY pkg pkg
+RUN go build -v ./...

goopicsi.go → pkg/csi/goopicsi.go

@@ -2,7 +2,7 @@
 // Copyright (c) 2022 Dell Inc, or its subsidiaries.
 
 // Package godpu implements the go library for OPI to be used in CSI drivers
-package godpu
+package csi
 
 import (
 	"context"

goopicsi_test.go → pkg/csi/goopicsi_test.go

@@ -1,7 +1,7 @@
 // SPDX-License-Identifier: Apache-2.0
 // Copyright (c) 2022 Dell Inc, or its subsidiaries.
 
-package godpu
+package csi
 
 import (
 	"fmt"

pkg/inventory/inventory.go

@@ -0,0 +1,62 @@
+// SPDX-License-Identifier: Apache-2.0
+// Copyright (c) 2022 Dell Inc, or its subsidiaries.
+
+// Package inventory implements the go library for OPI to be used to query inventory
+package inventory
+
+import (
+	"context"
+	"log"
+	"time"
+
+	pb "github.com/opiproject/opi-api/common/v1/gen/go"
+	"google.golang.org/grpc"
+	"google.golang.org/grpc/credentials/insecure"
+)
+
+var (
+	conn    *grpc.ClientConn
+	address = "localhost:50051"
+)
+
+// InventoryGet returns inventory information from DPUs
+func InventoryGet() error {
+	if conn == nil {
+		err := dialConnection()
+		if err != nil {
+			return err
+		}
+	}
+
+	client := pb.NewInventorySvcClient(conn)
+	ctx, cancel := context.WithTimeout(context.Background(), time.Second)
+	defer cancel()
+
+	data, err := client.InventoryGet(ctx, &pb.InventoryGetRequest{})
+	if err != nil {
+		log.Println(err)
+	}
+	log.Println(data)
+	log.Printf("Remote NVMf controller disconnected successfully: %v", data.Subnqn)
+	defer disconnectConnection()
+	return nil
+}
+
+func dialConnection() error {
+	var err error
+	conn, err = grpc.Dial(address, grpc.WithTransportCredentials(insecure.NewCredentials()))
+	if err != nil {
+		log.Printf("Failed to connect: %v", err)
+		return err
+	}
+	return nil
+}
+
+func disconnectConnection() {
+	err := conn.Close()
+	if err != nil {
+		log.Fatalf("Failed to close connection: %v", err)
+	} else {
+		log.Println("GRPC connection closed successfully")
+	}
+}

pkg/inventory/inventory_test.go

@@ -0,0 +1,4 @@
+// SPDX-License-Identifier: Apache-2.0
+// Copyright (c) 2022 Dell Inc, or its subsidiaries.
+
+package inventory