CODEWITHSUNDEEP
javascriptnode.jsmongodbmeteor
DeBraid
DeBraid

Reputation: 9451

meteor js create mongodb database hook to store data from API at fixed interval

tldr - What is the best pattern create a 'proprietary database' with data from an API? In this case, using Meteor JS and collections in mongo db.

Steps 1. Ping API 2. Insert Data into Mongo at some interval

In lib/collections.js

Prices = new Mongo.Collection("prices");

Basic stock api call, in server.js: 

Meteor.methods({
  getPrice: function () {
    var result = Meteor.http.call("GET", "http://api.fakestockprices.com/ticker/GOOG.json");
    return result.data;
  }  
});

Assume the JSON is returned clean and tidy, and I want to store the entire object (how you manipulate what is returned is not important, storing the return value is)

We could manipulate the data in the Meteor.method function above but should we? In Angular services are used to call API, but its recommended to modularize and keep the API call in its own function. Lets borrow that, and Meteor.call the above getPrice.

Assume this also done in server.js (please correct). 

Meteor.call("getPrice", function(error, result) {
  if (error)
      console.log(error)

    var price = result;

    Meteor.setInterval(function() {
     Prices.insert(price);
    }, 1800000); // 30min

});

Once in the db, a pub/sub could be established, which I'll omit and link to this overview.

Upvotes: 0

Views: 712

Answers (1)

Jeremy S.
Jeremy S.

Reputation: 4639

You may want to take a look at the synced-cron package.

With a cron job it's pretty easy, just call your method:

// server.js

SyncedCron.start();

SyncedCron.add({

  name: "get Price",

  schedule: function(parser){
    return parser.text('every 30 minutes');
  },

  job: function(){
    return Meteor.call("getPrice");
  }
});

Then in getPrice you can do var result = HTTP.call(/* etc */); and Prices.insert(result);. You would want some additional checks of course, as you have pointed out.

Upvotes: 1

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