Variable Insertion using HTTP Client

This page shows an example of Variable Insertion in Usage Engine using stream consisting of the HTTP Client function.

Refer to the example and follow the steps to understand Variable Insertion:

Enter the JS code using the Script function. Example of a JS code snippet:

await push({
    url: 'https://postman-echo.com',
    foo: 42,
    bar: 'kawaboom!',
    baz: payload.value % 2,
    someData: {
        alpha: 1337,
        beta: 'foobar'
    }
})

Configure an HTTP request response in the following format. You can substitute the values of variables defined in the JS code snippet using ${variable} or @{variable}.
Note!
While configuring HTTP body, you must add the JSON objects within quotes (" ") . Applicable only for JSON objects that return value in the string format.
Example:
{ "comp": "dr", "dept": "pm", "score": 100, "name": "@{payload.name}", "age": "@{payload.age}" }

You will receive the following httpResponse:
httpResponse.json.age httpResponse.json.comp httpResponse.json.dept httpResponse.json.name httpResponse.json.score
<age> dr pm <name> 100

However, if you do not use " " with ${name} or ${age} or both, then you will see the httpResponse in the string format as shown below:
httpResponse.json
{ "age": 18, "comp": "dr", "dept": "pm", "score": 100, "name": "jason" }

Using ${variable}

You are passing the url value as postman-echo.com and you will see the following response:

Output in the table format

The output below is divided, into three rows, due to a very long horizontal original output.

Output in the tree format

Using @{variable}

You can also use @{} for variable substitution as shown:

Output in the table format

The output below is divided, into five rows, due to a very long horizontal original output.