Writing a sample program in Siddhi

Creating a new Siddhi project

1. Go to File -> New -> Project. Select Siddhi project type and click Next button.

1. In the next step, we are prompted to select a SDK for the project. If you haven’t already added a SDK, please follow Setting up Siddhi SDK documentation to add a new SDK.

   Select the SDK and click Next button.

1. Update the project name and the location and click Next button.

Now you have successfully created a new Siddhi project.

Creating a new Siddhi file

1. Right click on the project and select New -> Siddhi File.

1. Enter the file name and click OK button. This will create a new file with the default app annotation.

Now you should have a new Siddhi file with the default app annotation.

Running Siddhi files

1. Write a sample siddhi program as shown in below.

1. Write a event input file(input.txt) as shown in below.

NOTE: You don’t need to define an input.txt file, if you are getting events through an extension.

1. Select Edit Configurations from the toolbar.

1. Click + button and select Siddhi to add a siddhi run/debug configuration.

1. Provide a name for the configuration and select the siddhi file from the file chooser.

1. Select the event input file from the file chooser and click OK.

NOTE: You don’t need to select an input.txt file, if you are getting events through an extension.

Near the main function, in the gutter area, Run icon can be found.

1. Select Run command. This will run the Siddhi file.

1. The output will be shown in the Run window.

Debugging Siddhi files

• Use the above provided(described under Running Siddhi files) sample siddhi file and event input file for this as well.

NOTE: You don’t need to define an input.txt file, if you are getting events through an extension.

• Provide a run/debug configuration (described under Running Siddhi files step 3-6) if you haven’t configured yet.

1. Add breakpoints as shown in below and select Debug command. This will start the debug process.

NOTE Siddhi only allows to add breakpoints on the beginning of a query input section or on the beginning of a query output.

1. The output will be shown in the Debug window.

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