How to call azure function with params - azure

Question

I am trying to use Azure function with to invoke the same function with different time and different param(url).
I didn't find any good example that shows how to pass some data. I want to pass link to function.
My code is:
var rp = require('request-promise');
var request = require('request');
module.exports = function (context //need to get the url) {
and the function
{
"bindings": [
{
"name": "myTimer",
"type": "timerTrigger",
"direction": "in",
"schedule": "0 0 */1 * * *"
}
],
"disabled": false
}

Answer 1

If your settings are relatively static (but you still don't want to hard code them), you may use app settings to store them, and then read e.g.
let url = process.env['MyUrl'];
If URL should be determined per request, you may use HTTP trigger and read the URL from query parameters:
let url = req.query.myurl;
I'm not sure what exactly you are trying to achieve with parameterized timer-triggered function.

Answer 2

Another possibility is if your parameters are stored somewhere in e.g. Azure Document DB (Cosmos).
You could still use a TimerTrigger to invoke the function, and include a DocumentDB input binding allowing you to query for the specific parameter values needed to execute the function.
Here's a C# example triggered by Timer, with a DocumentDB input binding. Note: I'm using the latest VS2017 Preview tooling for Azure functions.
[FunctionName("TimerTriggerCSharp")]
public static void Run(
[TimerTrigger("0 */1 * * * *")]TimerInfo myTimer, TraceWriter log,
[DocumentDB("test-db-dev", "TestingCollection", SqlQuery = "select * from c where c.doc = \"Test\"")] IEnumerable<dynamic> incomingDocuments)
{..}
With the following binding json:
{
"bindings": [
{
"name": "myTimer",
"type": "timerTrigger",
"direction": "in",
"schedule": "0 */5 * * * *"
},
{
"type": "documentDB",
"name": "incomingDocuments",
"databaseName": "test-db-dev",
"collectionName": "TestingCollection",
"sqlQuery": "select * from c where c.docType = \"Test\"",
"connection": "my-testing_DOCUMENTDB",
"direction": "in"
}
],
"disabled": false
}