This section explains how to generate multiple events via CSV files to be analyzed via WSO2 SP.

Prerequisites

Before simulating events, a Siddhi application should be deployed.

Simulating events

To simulate multiple events from a CSV file, follow the steps given below.

Access the Stream Processor Studio via the http://localhost:<EDITOR_PORT>/editor URL. The Stream Processor Studio opens as shown below.

The default URL is http://localhost:9090/editor
Click the Event Simulator icon in the left pane of the editor.
In the event simulation left panel that opens, click on the Feed Simulation tab.
To create a new simulation, click Create. This opens the following panel.
Enter values for the displayed fields as follows.
1. In the Simulation Name field, enter a name for the event simulation.
2. In the Description field, enter a description for the event simulation.
3. If you want to receive events only during a specific time interval, enter that time interval in the Time Interval field.
4. Click Advanced Configurations if you want to enter detailed specifications to filter events from the CSV file. Then enter information as follows.
  1. If you want to include only events that belong to a specific time interval in the simulation feed, enter the start time and the end time in the Starting Event's Timestamp and Ending Event's Timestamp fields respectively. To select a timestamp, click the time and calendar icon next to the field.
    
    Then select the required date, hour, minute, second and millisecond. Click Done to select the time stamp entered. If you want to select the current time, you can click Now.
  2. If you want to restrict the event simulation feed to a specific number of events, enter the required number in the No of Events field.
5. In the Simulation Source field, select CSV File.
6. Click Add Simulation Source to open the following section.
  
  In the Siddhi App Name field, select the required Siddhi application. Then more fields as shown below.
  
  Enter details as follows:
  1. In the Stream Name field, select the stream for which you want to simulate events. All the streams defined in the Siddhi App you selected are available in the list.
  2. In the CSV File field, select an available CSV file. If no CSV files are currently uploaded, select Upload File from the list. This opens the Upload File dialog box.
    
    Click Choose File and browse for the CSV file you want to upload. Then click Upload.
  3. In the Delimiter field, enter the character you want to use in order to separate the attribute values in each row of the CSV file.
  4. If you want to enter more detailed specificiations, click Advanced Configuration. Then enter details as follows.
    1. To use the index value as the event timestamp, select the Timestamp Index option. Then enter the relevant index.
    2. If you want to increase the value of the timestamp for each new event, select the Increment event time by(ms) option. Then enter the number of milliseconds by which you want to increase the timestamp of each event.
    3. If you want the events to arrive in order based on the timestamp, select Yes under the Timestamp Interval option.
  5. Click Save to save the information relating to the CSV file. The name os the CSV file appears in the Feed Simulation tab in the left panel.
To simulate a CSV file that is uploaded and visible in the Feed Simulation tab in the left panel, click on the arrow to its right. The simulated events are logged n the output console.

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