Script Examples
This section contains examples in the form of code snippets to illustrate how the Script Function can be used.
Example - Tracking Consumed Volume
To keep track of the consumed volume of this Function:
state.node.consumedVolume = state.node.consumedVolume || 0;
const shouldPush = (++state.node.consumedVolume % 10) === 0;
if (shouldPush) {
log.info("Reached chargeable volume, pushing event for charging");
// volumeDiscount is updated by another function in the stream
await push({ charge: true, volumeDiscount: state.stream.volumeDiscount });
} else {
log.info('Consumed volume is ${state.node.consumedVolume}');
}
Example - Using Store in Tranform and Flush
In Transform
To set the latest call ID to the payload call ID:
await store.set('latestCallId', JSON.stringify(data));
To fetch the value of the latest call ID:
const result = JSON.parse(await store.get('latestCallId'));
In Flush
To delete the latest call ID at the end of each transaction:
Example - Set a Timeout Value
You can set a timeout value by stating it to the system. In this example, we will set it to 3 seconds and then deployment will be triggered.
Example npm Libraries
Below are a few code examples of how you can use npm libraries.
For further information on JavaScript, see DevDocs — JavaScript documentation .
For an example of how to use Script in a stream, see My First Stream.