AL4: IBM Internet of Things Foundation Lab Instructions
IBM WebSphere Technical University Oct 28 to Oct 31, Düsseldorf AL4: IBM Internet of Things Foundation Lab Instructions Author: Bryan Boyd, [email protected] Page 1 of 31 IBM WebSphere Technical University 1 Introduction This lab provides hands-on experience with IBM Internet of Things Foundation (IoT Foundation), a cloud service allowing you to easily connect IoT devices and applications together. You will deploy a provided Connected Vehicle simulator to IBM Bluemix, then configure an Internet of Things service to capture this data and share with a visualization tool. In this • • • • • 1.1 lab, you will: Create (if necessary) an IBM Bluemix account Create an Internet of Things service in Bluemix Download and configure the Connected Vehicle application Deploy the Connected Vehicle application to Bluemix Bind a Geospatial Analytics service in Bluemix System information Username: virtuser Password: impact2014 1.2 Connected Vehicle application The Connected Vehicle application you will configure and deploy in this lab has three separate components: 1) Node.js vehicle simulator 2) HTML5 Map app 3) HTML5 Tester app The three applications use IBM IoT Foundation for real-time publish/subscribe messaging, using the MQTT protocol. The simulated devices (vehicles) publish telemetry data frequently (5 msgs/sec) and subscribe to a command topic whereby they accept commands from the tester application (ex. set speed to 60). The Map app subscribes to the vehicle telemetry topic in order to display position and status in real-time. The Tester app allows you to publish control commands to the vehicles and notifications to the Map app. Page 2 of 31 IBM WebSphere Technical University Messaging in the Connected Vehicle application 2 Create a Bluemix account If you do not already have an IBM Bluemix account, visit http://www.bluemix.net to sign up for an account. The basic account is free for 30 days, and provides enough compute resources to run this lab. Once the account request is submitted, you will receive a confirmation email within 1-2 minutes. NOTE: Make sure to use an email address that you will be able to access from the lab image or from your personal computer. 3 Create an Internet of Things service From your Bluemix dashboard, select Add a Service. Page 3 of 31 IBM WebSphere Technical University Choose Internet of Things from the service list. Provide a service name that you will recognize later (ex. iot-trafficsim) — this service represents an organization in IoT Foundation, which is a shared space where devices and applications can securely connect and share data. The service name you enter here is just for your reference, you will not collide with other users with the name iot-trafficsim. Press Create to add the service. Page 4 of 31 IBM WebSphere Technical University The Selected Plan of Free will allow you to register a maximum of 20 devices at no charge. For other pricing details, visit the Internet of Things Foundation website: http://internetofthings.ibmcloud.com After the service is loaded, you will see the service information page with instructions and documentation for registering devices. To view your newly-create Internet of Things dashboard click the Launch button in the top-right corner of the page. You will be redirected out of Bluemix to the Internet of Things Foundation website. Page 5 of 31 IBM WebSphere Technical University From this dashboard, you will be able to manually register devices, generate API keys for applications, and invite other people to your organization. 4 Configure the IoT Foundation organization The Connected Vehicle application uses IoT Foundation for near real-time messaging between simulated vehicles (our devices) and the Map and Tester apps (applications). To facilitate this communication, you first have to register the devices and generate an API key for the applications. 4.1 Register devices The vehicle simulator allows you to model multiple vehicles from a single Node.js runtime instance. Each vehicle simulator will be treated as a device by IoT Foundation. You will eventually run 3 vehicle simulators, so the first step is to manually register these simulators to obtain access credentials. From the organization dashboard's Devices tab, select Add Device. In the Device Type dropdown, select Create a device type... and enter vehicle in the field below. Choose a device ID of any length that will be unique to this organization (ex. ABC, DEF, GHI) and select Continue. Page 6 of 31 IBM WebSphere Technical University The next screen show you the credentials for your device. For example: org=o4ze1w type=vehicle id=ABC auth-‐method=token auth-‐token=5QK1rWHG9JhDw-‐rs+S Save this information in a file as you will need these crednetials later. Now create two more devices and also save the credentials. Note that when creating the first device, create a type of vehicle, so you can select that from the Device Type dropdown when creating subsequent devices. For example, the other two device credentials may be: org=o4ze1w type=vehicle id=DEF auth-‐method=token auth-‐token=Q7QmQ*!jQn6NUF&rA4 org=o4ze1w type=vehicle id=GHI auth-‐method=token auth-‐token=4O_FET9iLe(4bK!))z Page 7 of 31 IBM WebSphere Technical University 4.2 Generate an API key You next will generate an API key for your organization. An API key provides credentials for any application (i.e. not a device) to connect to IoT Foundation using an MQTT client. From your organization dashboard, click on the API Keys tab and select New API Key. Copy down the key and token, for example: Key: a-‐o4ze1w-‐b7xr3coycy Auth Token: d4QD9Y@LcbrshlCD7q Again, save the key and token in a file as you will need them later. On the API Keys tab, you will see a new table row for the key you just created. Add a comment to the key to associate this with the Connected Vehicle application. Page 8 of 31 IBM WebSphere Technical University 5 Download and configure the Connected Vehicle application Download the Connected Vehicle application to your local machine: http://m2m.demos.ibm.com/trafficsimulator-WTU.zip Unzip the file to C:\Users\virtuser\trafficsimulator Navigate to C:\Users\virtuser\trafficsimulator\ in Windows Explorer, then right-click on manifest.yml and select Edit with Notepad++ Page 9 of 31 IBM WebSphere Technical University Now you must decide on a globally unique application name, which will be used when deploying to Bluemix. For example: bryancboyd-trafficsim Enter this application name for the host and name fields in manifest.yml Set the number of instances to 3, then save the file. Next, edit C:\Users\virtuser\trafficsimulator\public\config\settings.js This file is shared by the Node.js vehicle simulator and the Map and Tester apps, and stores all device and API key configuration data. • • • • • • For iot_deviceType, enter vehicle For iot_deviceOrg, enter your 6-character organization ID (ex: o4ze1w) For iot_deviceSet, enter the three device ID and tokens you registered For iot_apiKey, enter the API key you created For iot_apiToken, enter the API key token Keep the default values for notifyTopic and inputTopic: these are configuration parameters used by the Bluemix Geospatial service Page 10 of 31 IBM WebSphere Technical University For example: var config = { iot_deviceType: "vehicle", iot_deviceOrg: "o4ze1w", iot_deviceSet: [ { deviceId: "ABC", token: "5QK1rWHG9JhDw-‐rs+S" }, { deviceId: "DEF", token: "Q7QmQ*!jQn6NUF&rA4" }, { deviceId: "GHI", token: "4O_FET9iLe(4bK!))z" } ], iot_apiKey: "a-‐o4ze1w-‐b7xr3coycy", iot_apiToken: "d4QD9Y@LcbrshlCD7q", // these topics will be used by Geospatial Analytics notifyTopic: "iot-‐2/type/api/id/geospatial/cmd/geoAlert/fmt/json", inputTopic: "iot-‐2/type/vehicle/id/+/evt/telemetry/fmt/json", }; Save your changes. 6 Deploy the application to Bluemix To deploy the Connected Vehicle application to Bluemix, we will use the Cloud Foundry command line tools. 6.1 Download the Cloud Foundry CLI First, download and run the Cloud Foundry CLI tools installer: https://cli.run.pivotal.io/stable?release=windows64&source=github Complete the installation, following the prompts and choosing all default options. 6.2 Push the application to Bluemix Open the Command Prompt, and type the following: cd C:\Users\virtuser\trafficsimulator cf login Follow the prompts, entering https://api.ng.bluemix.net for the API endpoint, and your Bluemix IBM ID email and password as login credentials. If you have more than one Bluemix organization and space available, you will also have to choose these. For example: Page 11 of 31 IBM WebSphere Technical University Next, enter a cf push command to deploy your application to Bluemix. A Bluemix application name matching your entry in manifest.yml will be created. If the application deploys successfully, you will see output like this: If the application does not start successfully, type cf logs < your app name > -recent to view the error logs. Check manifest.yml for errors, such as tabs in place of whitespace. Now, visit the Map app at http://<app>.mybluemix.net. You will see the simulated vehicles moving across the map. Click on a vehicle to view the telemetry data. Page 12 of 31 IBM WebSphere Technical University 6.3 Increase the vehicle count per simulator Each vehicle simulator can model multiple vehicles. The number of vehicles is controlled by a Bluemix environment variable, which can be set from the Bluemix application dashboard. In the dashboard, click on the SDK for Node.js™ icon. Page 13 of 31 IBM WebSphere Technical University Add a USER-DEFINED variable VEHICLE_COUNT, and select a value of 5. Notice that the change was applied dynamically and the number of cars on the map increases. 7 Using the Tester app The Tester app is used to send commands to the simulated vehicles and the Map app. The vehicle simulator subscribes to commands of type setProperty and will dynamically change its own properties, speed, and state. The Map app subscribes to commands of type addOverlay and will dynamically display a popup of text over a vehicle. Open the Map app and Tester app (http://<app>.mybluemix.net/tester) side-byside, so that you can see both windows. 7.1 setProperty Select a vehicle, then enter the ID in the second form on the Tester page. Enter a property of speed and a value of 120, and press Update Property. You will see the MQTT topic and payload containing the command in the Tester app, and the selected vehicle will change speed to 120 km/hr. Page 14 of 31 IBM WebSphere Technical University The vehicles simulate a set of static properties (location, speed, state, and type) and custom properties. The setProperty API allows you to dynamically add/change/delete a custom property on a vehicle. To add a property, simply publish a property that doesn't yet exist. For example, use property = driverWindow and value = UP. To delete a property, update the property with a value of an empty string; the vehicle will stop including the property in its telemetry message. 7.2 addOverlay The Map app subscribes to commands of type addOverlay, to allow external applications to display messages on the map over a vehicle. In the Tester app, use the upper form to display a message over a vehicle, for example: Page 15 of 31 IBM WebSphere Technical University 8 Configuring the Geospatial Analytics service The Bluemix Geospatial Analytics service allows you track when devices enter or leave defined regions, or geofences. The Map app can interact with the Bluemix Geospatial Analytics service, allowing you to graphically create and delete geofences dynamically. The Geospatial Analytics service uses the IoT Foundation organization API key you created previously to subscribe to device location data. In your Bluemix dashboard, select Add Service, then choose the Geospatial Analytics service. Enter a service name (ex: geo-trafficsim) and bind the service to the Connected Vehicle app. Select Create, and wait for the application to re-stage. Page 16 of 31 IBM WebSphere Technical University The Connected Vehicle application includes APIs to start and stop the Geospatial Analytics service. To start the service, visit the following URL in your browser and wait for the page to return {} (may take 45-60 seconds): http://<app>.mybluemix.net/GeospatialService_start Now, open the Map app (http://<app>.mybluemix.net) and create some geofences. Use the Alert button on the toolbar to start the geofence creation process, and drag the handles and edges to position the geofence. To create the geofence, click on the center black circle to open the context menu then select Create. Page 17 of 31 IBM WebSphere Technical University The Geospatial Analytics service will add this geofence to the list of watched areas, and will publish an MQTT message through IoT Foundation whenever a vehicles enters or leaves the area. The Map app will consume the message and display an overlay over the vehicle on the map: To delete a geofence, select the region and press the Delete button. This concludes the main focus of the lab. At this point, you have created a Bluemix account and deployed a connected vehicle application utilizing Internet of Things Foundation and the Bluemix Geospatial Analytics service. 9 [Extra] Extend the application with Node-RED With any remaining time in the lab, you will use the Node-RED boilerplate in Bluemix to extend the connected vehicle application. Node-RED is a visual tool for wiring together events in IoT use cases. Node-RED allows you to design flows of logic that Page 18 of 31 IBM WebSphere Technical University link a variety of inputs (ex. MQTT, TCP, HTTP) to outputs (ex. MQTT, HTTP, Twitter, MongoDB, Cloudant) to quickly add business logic to a scenario. 9.1 Deploy Node-RED in Bluemix Node-RED is available as a boilerplate application in Bluemix. Open the Bluemix dashboard for the same organization and space where the Connected Vehicle application was deployed. Select Add Application, and choose the Internet of Things Foundation boilerplate. Provide a name and hostname (ex: bryancboyd-nodered), and press Create. The application will take up to a minute to deploy. When the application is running, select Bind a Service and choose the IoT Foundation service you created previously (ex. iot-trafficsim). Select Add and wait for the application to restage. After the application stages, open the Node-RED canvas at the following URL: http://<node-red-app>.mybluemix.net/red The IoT boilerplate Node-RED applications starts with a default flow. Select the nodes on the canvas and press delete to remove them. 9.2 Flow 1: Monitor Vehicle Telemetry For the first flow, we are going to monitor telemetry for all vehicles. Drag an ibmiot input node from the palette on the left onto the canvas. Drag a debug node to the right of the ibmiot node, and wire the nodes together. Double-click the ibmiot node to enter an edit dialog, and configure it like this: Authentication: Bluemix Service Input Type: Device Event Device Type: vehicle Device Id: <all> Event: telemetry Format: json Name: Telemetry Now press Deploy (top-right corner of page) and select the debug pane. If configuration was successful and the connected vehicle application is currently Page 19 of 31 IBM WebSphere Technical University running, you will see the MQTT payloads for the connected vehicles in the debug pane. Page 20 of 31 IBM WebSphere Technical University If your VEHICLE_COUNT environment variable is set to a value greater than 1, the telemetry data for VEHICLE_COUNT vehicles will be contained in a single array. To modify the flow to filter for a single vehicle (ex. ABC-2), add a function node in the middle of your flow, double-click and fill in the following code: var data = msg.payload; for (var i in data) { if (data[i].id == "ABC-2") { msg.payload = data[i]; return msg; } } Wire the flow together and press Deploy. You should now see data for a single vehicle in your debug pane: To import this example into your Node-RED application, select Import... à Clipboard... and paste in the following: [{"id":"4078e26.fbf871c","type":"ibmiot in","authentication":"boundService","apiKey":"","inputType":"evt","deviceId":" ","applicationId":"","deviceType":"vehicle","eventType":"telemetry","commandTy pe":"","format":"json","name":"Telemetry","service":"registered","allDevices": true,"allApplications":"","allDeviceTypes":"","allEvents":"","allCommands":"", "allFormats":"","x":119.52381134033203,"y":82.85714530944824,"z":"7334b438.8cc Page 21 of 31 IBM WebSphere Technical University b4c","wires":[["e2f33833.1d0cc8"]]},{"id":"e1fcad1f.1e035","type":"debug","nam e":"","active":true,"console":"false","complete":"false","x":479.9999847412109 4,"y":82.22222137451172,"z":"7334b438.8ccb4c","wires":[]},{"id":"e2f33833.1d0c c8","type":"function","name":"filter","func":"var data = msg.payload;\nfor (var i in data) { \n\tif (data[i].id == \"ABC-‐2\") { \t\n\t\tmsg.payload = data[i]; \n\t\treturn msg; \n\t}\n}","outputs":1,"x":301.11109161376953,"y":98.88888835906982,"z":"7334b4 38.8ccb4c","wires":[["e1fcad1f.1e035"]]}] 9.3 Flow 2: Remote Control Next, use Node-RED to build a simple remote control to lock/unlock a vehicle. You will use two inject nodes: one to unlock the vehicle, the other to lock it. For each operation, you will publish a setProperty command for property lockState with a value of "locked" or "unlocked", then publish an addOverlay command to display a notification on the Map app. First, use the Tester application to set the lockState manually. The Tester application will show the MQTT topic and JSON payload that is published to the vehicle. Open http://<app>.mybluemix.net/tester/ in a browser, and update a property (ex. lockState, value of locked) Now use the Tester app to publish a "Locked!" overlay message over the vehicle. Go to your Node-RED flow and drag two inject input nodes onto the Node-RED canvas. Edit each node and configure a string payload: "locked" for one, "unlocked" Page 22 of 31 IBM WebSphere Technical University for the other. This payload will be the value that is sent in the setProperty command. Next, add a function node to the flow and wire both inject nodes to it. This function will build and publish two commands to IoT Foundation: one for setting the vehicle state, the other for displaying an overlay message on the Map app. Use the following code: var commandValue = msg.payload; var setPropertyMsg = { deviceId: "ABC", deviceType: "vehicle", eventOrCommandType: "setProperty", format: "json", payload: JSON.stringify({ "id": "ABC-2", "property": "lockState", "value": commandValue }) } var addOverlayMsg = { deviceId: "tester", deviceType: "api", eventOrCommandType: "addOverlay", format: "json", payload: JSON.stringify({ "id": "ABC-2", "text": commandValue, "duration": 5000 Page 23 of 31 IBM WebSphere Technical University }) } return [ [setPropertyMsg, addOverlayMsg] ]; Next, add an ibmiot output node to the flow, after the function node. The function node will overwrite many of the configuration values on the ibmiot node; these fields we will mark with a "dummy" value of override: Now deploy the application (click Deploy in the top-right corner of the page) and press the button on the inject nodes while watching the Map app. You will see the lockState property update for vehicle ABC-2, and a message will appear on the map: Page 24 of 31 IBM WebSphere Technical University To import this example into your Node-RED application, select Import... à Clipboard... and paste in the following: [{"id":"39b55e35.c64aa2","type":"inject","name":"","topic":"","payload":"locke d","payloadType":"string","repeat":"","crontab":"","once":false,"x":122,"y":61 ,"z":"82444a5d.7dbbb8","wires":[["15886565.ea779b"]]},{"id":"4811a619.b7ee58", "type":"inject","name":"","topic":"","payload":"unlocked","payloadType":"strin g","repeat":"","crontab":"","once":false,"x":123,"y":118,"z":"82444a5d.7dbbb8" ,"wires":[["15886565.ea779b"]]},{"id":"15886565.ea779b","type":"function","nam e":"build commands","func":"var commandValue = msg.payload;\n\nvar setPropertyMsg = {\n\ttopic: \"iot-‐ 2/type/trafficsim/id/ABC/cmd/setProperty/fmt/json\",\n\tpayload: JSON.stringify({\n\t\t\"id\": \"ABC-‐16\",\n \t\"property\": \"lockState\",\n \t\"value\": commandValue\n\t})\n}\n\nvar addOverlayMsg = {\n\ttopic: \"iot-‐2/type/api/id/tester/cmd/addOverlay/fmt/json\",\n\tpayload: JSON.stringify({\n\t\t\"id\": \"ABC-‐16\",\n \t\"text\": commandValue,\n \t\"duration\": 5000\n\t})\n}\n\nreturn [ [setPropertyMsg, addOverlayMsg] ];","outputs":1,"x":314,"y":87,"z":"82444a5d.7dbbb8","wires":[["f4a0c41f.0b5f3 8","16a019e9.e95fe6"]]},{"id":"f4a0c41f.0b5f38","type":"iot-‐app-‐ out","name":"send","topic":"","x":529,"y":113,"z":"82444a5d.7dbbb8","wires":[] },{"id":"16a019e9.e95fe6","type":"debug","name":"","active":true,"console":"fa lse","complete":"false","x":507,"y":59,"z":"82444a5d.7dbbb8","wires":[]}] 9.4 Flow 3: Simulate a Person In its most basic form, the provided vehicle simulator is just a simulator—one that can model any properties and follow a road path. To simulate a person rather than a Page 25 of 31 IBM WebSphere Technical University vehicle (say, an elderly woman), you can change the properties of a simulated "vehicle" dynamically. In the Node-RED flow, drop and inject input node onto the canvas. Edit the node, to provide a string payload of ABC-2. Add a function node after the inject node, and insert the following code: var id = msg.payload; var msgs = []; var propValues = [ // static properties ["speed", "2"], ["state", "walking"], ["description", "Out for a nice walk"], // custom properties ["customProp", ""], ["age", 87], ["sex", "female"], ["name", "Albertine"] ]; for (var i in propValues) { msgs.push({ deviceId: "ABC", deviceType: "vehicle", eventOrCommandType: "setProperty", format: "json", payload: JSON.stringify({ "id": id, "property": propValues[i][0], "value": propValues[i][1] }) }); } // make map overlay msgs.push({ deviceId: "tester", deviceType: "api", eventOrCommandType: "addOverlay", format: "json", payload: JSON.stringify({ "id": id, Page 26 of 31 IBM WebSphere Technical University "text": "Hello Grandmother!", "duration": 5000 }); }) return [msgs]; After the function node, add a ibmiot node with the following properties: Press the inject node, and you will see the properties of vehicle ABC-2 change to model a person moving 2 km/hr. Page 27 of 31 IBM WebSphere Technical University To import this example into your Node-RED application, select Import... à Clipboard... and paste in the following: [{"id":"d45a1fb3.2ba5e","type":"inject","name":"","topic":"","payload":"ABC-‐ 2","payloadType":"string","repeat":"","crontab":"","once":false,"x":116.666666 66666666,"y":81.11111111111111,"z":"7334b438.8ccb4c","wires":[["e92fc3e5.16d04 "]]},{"id":"a4bcec6b.5b431","type":"ibmiot out","authentication":"boundService","apiKey":"","outputType":"cmd","deviceId" :"override","deviceType":"override","eventCommandType":"override","format":"js on","data":"override","name":"set Grandmother","service":"registered","x":457.7777786254883,"y":80,"z":"7334b438 .8ccb4c","wires":[]},{"id":"1631a938.e9ce57","type":"debug","name":"","active" :true,"console":"false","complete":"false","x":426.66666666666663,"y":141.1111 1111111111,"z":"7334b438.8ccb4c","wires":[]},{"id":"e92fc3e5.16d04","type":"fu nction","name":"build cmds","func":"var id = msg.payload;\nvar msgs = [];\n\nvar propValues = [\n\t// static properties\n\t[\"speed\", \"2\"],\n\t[\"state\", \"walking\"],\n\t[\"description\", \"Out for a nice stroll\"],\n\n\t// custom properties\n\t[\"customProp\", \"\"],\n\t[\"age\", 87],\n\t[\"sex\", \"female\"],\n\t[\"name\", \"Albertine\"]\n];\n\nfor (var i in propValues) {\n\tmsgs.push({ \n\t\tdeviceId: \"ABC\",\n\t\tdeviceType: \"vehicle\",\n\t\teventOrCommandType: \"setProperty\",\n\t\tformat: \"json\",\n\t\tpayload: JSON.stringify({\n\t\t\t\"id\": id,\n \t\t\"property\": propValues[i][0],\n \t\t\"value\": propValues[i][1]\n\t\t})\n\t});\t\n}\n\n// make map Page 28 of 31 IBM WebSphere Technical University overlay\nmsgs.push({\n\tdeviceId: \"tester\",\n\tdeviceType: \"api\",\n\teventOrCommandType: \"addOverlay\",\n\tformat: \"json\",\n\tpayload: JSON.stringify({\n\t\t\"id\": id,\n \t\"text\": \"Hello Grandmother!\",\n \t\"duration\": 5000\n\t})\n});\n\nreturn [msgs];","outputs":1,"x":268.88888359069824,"y":104.4444408416748,"z":"7334b43 8.8ccb4c","wires":[["a4bcec6b.5b431","1631a938.e9ce57"]]}] 9.5 Flow 4: Tweet my Child's Driving With the Bluemix Geospatial Analytics service, you can create geofence polygons in the Map app and receive IoT Foundation events when a vehicle enters or leaves a region. The Map app already subscribes to this event topic and displays messages as a notification overlay over the vehicle. This geospatial event topic can be subscribed to by multiple applications, and be a building block used to create more complex scenarios. For example: a bounding box for young drivers, signaling parents whenever their child drives outside of an "approved" zone. Or: detect when my vehicle has entered a geofence surrounding my house, and notify my house automation system to prepare for my arrival. You can use Node-RED to link geofence alerts to other applications and APIs. In this flow, you will publish a Twitter tweet when receiving a geofence notification message for a particular vehicle. First, drop an ibmiot input node onto the canvas. Configure the node as follows: Add a function node after the ibmiot input node. This function wil filter the data returned from the geospatial service, and only continue flow execution if the vehicle for the alert matches an ID specified. Use the following code (if desired, replace the ID with a vehicle in your environment), wire the function to a debug node, and deploy: Page 29 of 31 IBM WebSphere Technical University msg.payload = { time: msg.payload.time, id: msg.payload.deviceInfo.id, lon: msg.payload.deviceInfo.location.longitude, lat: msg.payload.deviceInfo.location.latitude, eventType: msg.payload.eventType, region: msg.payload.regionId } if (msg.payload.id == "ABC-3") { return msg; } [Note: the following section requires a Twitter account. If you do not have one, sign up at http://www.twitter.com] Next, drag a twitter output node onto the canvas, and wire the output of the function to the input of this node. The twitter node allows you to configure an existing Twitter account using OAuth, then will tweet the contents of msg.payload. Sign in to your Twitter account, then modify the function node to build the message for Twitter: msg.payload = { time: msg.payload.time, id: msg.payload.deviceInfo.id, lon: msg.payload.deviceInfo.location.longitude, lat: msg.payload.deviceInfo.location.latitude, eventType: msg.payload.eventType, region: msg.payload.regionId } if (msg.payload.id == "ABC-3") { var verb = "exited"; if (msg.payload.eventType == "Entry") { verb = "entered"; } msg.payload = "Vehicle " + msg.payload.id + " has " + verb + " region " + msg.payload.region + "!"; return msg; } Deploy the application, and Node-RED will publish a tweet whenever a geofence is crossed by your vehicle: Page 30 of 31 IBM WebSphere Technical University 9.6 Develop further scenarios With any remaining time, try to build a new and unique scenario with Node-RED and the Connected Vehicle application. Or, continue to work on this lab after WebSphere Technical University, with your Bluemix account. Page 31 of 31
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