Cannot Perform HTTP Request in Hyperledger Composer - hyperledger-fabric

Question

I am trying to create a business network which demonstrates nondeterministic behaviour by requesting a random number from a URL (https://random-number-api.mybluemix.net/random).
However, when I invoke the transaction from, the following error appears:
TypeError: request.get is not a function
In the documentation (https://hyperledger.github.io/composer/latest/integrating/call-out), it is mentioned that request is global and can be used directly.
To test the URL,
curl -X GET https://random-number-api.mybluemix.net/random
I am using Composer 0.18.2.
The following is the code. The whole business network definition is found here: https://github.com/caveman7/nondeterministic
async function createStock(request) {
const factory = getFactory();
const namespace = 'org.nondeterministic';
const stock = factory.newResource(namespace, 'Stock', request.stockId);
const priceAsStr = await request.get({uri: 'https://random-number-api.mybluemix.net/random'});
stock.price = parseInt(priceAsStr);
//stock.price = getPrice();
console.log('#debug - Stock Price Generated is: USD' + stock.price);
const ar = await getAssetRegistry(namespace + '.Stock')
await ar.add(stock);
}
const getPrice = () => {
const price = Math.floor((Math.random() * 10000) + 1);
return price;
}

Answer 1

probably because you're providing request as an object to the TP. As shown above or https://github.com/caveman7/nondeterministic/blob/master/lib/script.js#L22
Errors as its 'not' got a method called get?. It should be async function createStock(createStock ) to match the parameter name in the transaction decorator (tracing the github script file from the above link) - and then you should be able to access request.get() as you would expect (since request.get came in in 0.18.1 IIRC).