Generate sensor data

Open the modelling environment for building pipelines via http://localhost:8090 (SAP Data Hub Pipeline Modeler).

Press the Create Graph (1) button to create a new pipeline. The pipeline opens in the editor (2).

Press the Save (1) button. Then enter a Name (test.myFirstPipeline) and Description (My first pipeline) in the pop-up window (2).

Open the Operators (1) tab in the Navigation on the left. Then search for Data Generator (2).

Add the Data Generator (3) operator to the pipeline by drag & drop.

Attention: The SAP Data Hub, developer edition comes with a pipeline as well as with an operator called Data Generator. If you miss to open the Operators tab, you might end up opening the pipeline called Data Generator instead of adding the operator.

Press the Script (4) button to display the JavaScript snippet which is executed by the Data Generator. The JavaScript snippet opens in a new tab of the editor.

You see that the Data Generator creates a new random sample record every 500 milliseconds and sends it via the output port of the operator.

The sample data represents sensors for humidity, temperature etc.

Close the tab for the JavaScript snippet.

Add a Terminal operator to the pipeline by drag & drop (you find this also in the Operators tab). Then connect the output port of the Data Generator operator to the in1 port of the Terminal operator. You need to place the connection exactly on the “green circle”.

Afterwards press the Save (1) button.

Press the Run (1) button to execute the pipeline.

When the Status (2) tab indicates that the pipeline is running, use the context menu Open UI of the Terminal (3) operator to see the generated sensor data.

Stop the pipeline by pressing the Stop button (you find it next to the Run button).