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Info

To view a screencast of the Quick Start Guide, click here .

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Tip

Before you begin, 

  1. Install Oracle Java SE Development Kit (JDK) version 1.8 and set the JAVA_HOME environment variable.
  2. Install Apache ant.
  3. Download WSO2 DAS.
  4. Start the DAS by going to <DAS_HOME>/bin using the command-line and executing wso2server.bat  (for Windows) or  wso2server.sh  (for Linux.) 

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  1. Log into the DAS Management Console and click on the Main tab. Under Manage, click Publishers to open the Available Publishers page.
  2. Click Add Event Publisher to open the Create a New Event Publisher page.

  3. Enter information as follows to create the new event publisher named UIPublisher.

    Parameter NameDescription
    Event Publisher NameuiPublisher
    Event Sourceorg.wso2.event.sensor.filtered.stream:1.0.0
    Output Event Adapter Typeui
    Message Formatwso2event

  4. Click Add Event Publisher to save the information.

Step 9: Create a dashboard and a gadget

WSO2 Analytics Dashboard will be used as the tool to analyse the output of the event flow you created in this guide. This step creates a dashboard and a gadget which analyses events from the  org.wso2.event.sensor.filtered.stream stream published by the uiPublisher publisher.

  1. Log into the DAS Management Console. In the Main tab, click Analytics Dashboard.
  2. Log into the Analytics Dashboard with your username and password.
  3. Click the menu icon and then click Gadgets to open the Gadgets page as demonstrated below.
    Image Modified
  4. Click GENERATE GADGET, and enter values in the Generate a Gadget wizard as follow. 
    Image Modified
    1. In the  Select Provider  field, select  Realtime Data Source . Then click  Next .
    2. In the Event Stream field, select org.wso2.event.sensor.filtered.stream:1.0.0 . Then click Next.

    3. Configure a chart as follows.

      Parameter NameValue
      Gadget NameSensor Value VS Timestamp
      Select Chart TypeLine Chart
      X-AxisTIMESTAMP
      X typetime
      Y-AxissensorValue
      Y typedefault
      Color domainsensorName
      Max length30
    4. Click Add to Store, and then click Go to Portal. the Dashboards page appears again.
  5. Click CREATE DASHBOARD to open the Create a Dashboard page. Configure a new dashboard as follows.Image Modified

    1. Enter a name and a description for the new dashboard as follows, and click Next.

      Parameter NameValue
      Name of your DashboardSensor Statistics
      DescriptionThis dashboard indicates the sensor value at different times in a particular location.
    2. Select the Single Column layout. A message appears to indicate that the dashboard is successfully created.
    3. Click the  icon for gadgets. Then select and drag Sensor Value VS Timestamp gadget to the first column as demonstrated above.
    4. Click View to view created dashboard.

Step 10: Send Events to the HTTP Receiver via Curl Command

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Panel

Deploying the sample C-App

You can deploy artifacts (i.e. event streams, event receivers, Spark scripts, event publishers, and dashboards etc.) as composite Carbon Applications (C-Apps) in WSO2 DAS. This guide uses the SMART_HOME.car file as the toolbox which contains all the artifacts required for this guide in a single package. For more information on C-Apps, see Packaging Artifacts as a C-App Archive. Follow the steps below to deploy and use a sample C-App in WSO2 DAS.

  1. Log in to the DAS management console using the following URL: https://<DAS_HOST>:<DAS_PORT>/carbon/
  2. Click Main, and then click Add in the Carbon Applications menu.
  3. Click  Choose File, and upload the <DAS_HOME>/capps/Smart_Home.car file as shown below.
    adding the new C-App
  4. Click Main , then click Carbon Applications, and then click List view, to see the uploaded Carbon application as shown below.
    list of all available C-Apps


Tip

You can use the Event Flow feature of WSO2 DAS to visualize how the components that you created above are connected with each other. Also, you can use it for verification purposes i.e. to validate the flow of the events within the DAS as shown below.

Image Modified


Publishing events 

Once you develop the complete Event Flow, you can test the flow by publishing the events to the DAS. There are several methods of publishing to DAS. In this section, the events are published via a log file.

Navigate to <DAS_HOME>/samples/smart-home directory in a new CLI tab, and execute the following command to run the data publisher.

Code Block
languagebash
ant
Info

This executes a Java client based on the <DAS_HOME>/samples/smart-home/src/main/java/org/wso2/carbon/das/smarthome/sample/SmartHomeAgent.java file. This Java client generates random events and sends them to the event stream that is deployed through the Smart_Home.car file.

Viewing the output

Follow the steps below to view the presentation of the output in the Analytics Dashboard.

  1. Log in to the Management console, if you are not already logged in.

  2. Click Main, and then click Analytics Dashboard in the Dashboard menu. 

  3. Log in to the Analytics Dashboard, using admin/admin credentials. 

  4. Click the DASHBOARDS button in the top menu. The dashboard deployed by the C-App is displayed as shown below.  

  5. Click the View button of the corresponding Dashboard. The following charts are displayed.

     


Tip

 Follow the steps below to undeploy the C-App, which you already uploaded in this section before proceeding to the next sections.

  1. Log in to the DAS Management Console using admin/admin credentials, if you are not already logged in.
  2. Click Main, then click Carbon Applications, and then click List view, to see the uploaded Carbon application.
  3. Click on the Delete option to delete the Carbon application as shown below.
  4. Refresh the Web browser screen, and check if the SMART_HOME.car file has beed removed from the list of all available C-Apps. 

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