Add instruction if device-discovery-cli is not installed

README.md

@@ -26,7 +26,7 @@ Toolkit makes Azure IoT Development easier
 | List device | Ctrl+Alt+F1 | editor/context |
 | Create device | Ctrl+Alt+F2 | editor/context |
 | Delete device | Ctrl+Alt+F3 | editor/context |
-| Discover device | Ctrl+Alt+F6 | editor/context |
+| Discover connected device | Ctrl+Alt+F6 | editor/context |
 
 ## Usages
 
@@ -84,6 +84,9 @@ By default, anonymous telemetry data collection is turned on to understand user
 ```
 
 ## Change Log
+### 0.0.4
+* Add instruction if device-discovery-cli is not installed 
+
 ### 0.0.3
 * Discover Ethernet, USB serial, WiFi devices
 

package.json

@@ -2,7 +2,7 @@
   "name": "azure-iot-toolkit",
   "displayName": "Azure IoT Toolkit",
   "description": "Iteract with Azure IoT Hub; IoT Device Management; Discover Ethernet, USB serial, WiFi connected devices",
-  "version": "0.0.3",
+  "version": "0.0.4",
   "publisher": "formulahendry",
   "icon": "images/logo.png",
   "engines": {

src/deviceDiscoverer.ts

@@ -6,6 +6,7 @@ import { Utility } from './utility';
 import { AppInsightsClient } from './appInsightsClient';
 import { BaseExplorer } from './baseExplorer';
 const types = ['eth', 'usb', 'wifi'];
+const devdisco = 'devdisco';
 
 export class DeviceDiscoverer extends BaseExplorer {
     private _deviceStatus = {};
@@ -26,8 +27,9 @@ export class DeviceDiscoverer extends BaseExplorer {
     }
 
     private deviceDiscovery(label: string, type: string): void {
-        let process = exec(`devdisco list --${type}`);
+        let process = exec(`${devdisco} list --${type}`);
         let startTime = new Date();
+        let devdiscoNotFound = false;
 
         process.stdout.on('data', (data) => {
             this._outputChannel.append(data);
@@ -35,6 +37,9 @@ export class DeviceDiscoverer extends BaseExplorer {
 
         process.stderr.on('data', (data) => {
             this._outputChannel.append(data);
+            if (data.indexOf(devdisco) >= 0) {
+                devdiscoNotFound = true;
+            }
         });
 
         process.on('close', (code) => {
@@ -42,6 +47,10 @@ export class DeviceDiscoverer extends BaseExplorer {
             let elapsedTime = (endTime.getTime() - startTime.getTime()) / 1000;
             this._appInsightsClient.sendEvent(`${label}.${type}`, { Code: code.toString() });
             this.outputLine(label, 'Finished with exit code=' + code + ' in ' + elapsedTime + ' seconds');
+            if (devdiscoNotFound && code >= 1) {
+                this.outputLine(label, '[Note!!!] Please install device-discovery-cli with below command if not yet:');
+                this.outputLine(label, 'npm install --global device-discovery-cli');
+            }
         });
     }
 }