How to Pass Parameters to a Cloud Function

In my previous blog post I showed how to invoke an external REST API from a cloud function. The API that I used returns a random (Chuck Norris ūüí™) joke. In this blog post I want to show you to how pass a parameter to the cloud function. We can pass a joke number to the API and get that particular joke back ūü§£.

Using the code from the previous blog post:

var request = require("request");

function main(params) {
   var options = {
      url: "https://api.icndb.com/jokes/random",
      json: true
   };

   return new Promise(function (resolve, reject) {
      request(options, function (err, resp) {
         if (err) {
            console.log(err);
            return reject({err: err});
         }
      return resolve({joke:resp.body.value.joke});
      });
   });
}

to get a particular joke number, change the URL to look like this:

url: "https://api.icndb.com/jokes/" + params.joke

params Рpassed to main function is a JSON object that holds parameters (input) to this cloud function.

Continue reading “How to Pass Parameters to a Cloud Function”

How to Invoke an External REST API from a Cloud Function

In a previous blog post I showed how to create your first cloud function (plus a video). It’s very likely that your cloud function will need to invoke an external REST API. The following tutorial will show you how to create such function (it’s very easy).

  1. Sign into an IBM Cloud account
  2. Click Catalog
  3. Remove the label:lite filter and type functions
  4. Click on Functions box
  5. Click Start Creating button
  6. Click Create Action
  7. For Action Name enter ajoke and click the Create button.  A new cloud function will be created with Hello World message
  8. Replace the function code with the following code which invokes a 3rd party REST API which returns a random joke:
    var request = require("request");
    
    function main(params) {
       var options = {
          url: "https://api.icndb.com/jokes/random",
          json: true
       };
    
       return new Promise(function (resolve, reject) {
          request(options, function (err, resp) {
             if (err) {
                console.log(err);
                return reject({err: err});
             }
          return resolve({joke:resp.body.value.joke});
          });
       });
    }
    
    • The code is simple. It uses the request Node.js package to connect to an external REST API
    • The external REST API returns a random joke
    • A JavaScript Promise is used for invoking the REST API
    • At the end the cloud function returns a response in JSON format
  9. Now click the Save button to save the code. Once the code is saved the button will change to Invoke. Click the button to invoke the function. In the right-hand panel you should see output with a random joke:
    {
      "joke": "Project managers never ask Chuck Norris for estimations... ever."
    }
    

This is how it looks inside the IBM Cloud Functions editor:

cloudfunctions-invoke-restapi
Cloud function code

Of course you can also build and test a cloud function using the CLI. I’ll cover that in another blog post.

Continue reading “How to Invoke an External REST API from a Cloud Function”

6-Part Online Meetup Series On How Technology Can Help With Natural Disasters

We are launching a 6-part online meetup series where we will cover technologies and solutions that can greatly help before, during and after a natural disaster. In fact, this webinar series is a part of Call for Code initiative headed by IBM, The Linux Foundation, UN Human Rights, and American Red Cross.

The online meetups are only 30 minutes. If you are up to answering the call and would like to participate in the challenge, the online meetups will cover available resources to help you get started fast and build a solution. Join our online meetups regardless as they fun and educational.

  • Evaluate Person’s Pulse Data with Machine Learning¬†
    • Wednesday, August 8, 9:30am Pacific Time
    • Register
  • Learn How to Create and Analyze Charts, Graphs, and Maps
    • Thursday, August 9, 9:30am Pacific Time
    • Register
  • Learn How to Add Visual Recognition to an iOS App
    • Wednesday, August 15, 9:30am Pacific Time
    • Register
  • Translate Written Communications to Improve Information Sharing
    • Wednesday, August 22, 9:30am PT
    • Register
  • Build a cellular IoT Asset Tracker with Blockchain
    • Thursday, August 29, 9:30am Pacific Time
    • Register
  • Build Financial Networks with Blockchain to Execute Secure Transactions
    • Wednesday, September 5, 9:30am Pacific Time
    • Register

Video: Build Your First Cloud Function

Last week I showed you how to build your first cloud function using IBM Cloud Functions. I also recorded a 5-minute video that shows how to build your first function and a number of ways to invoke it via a REST API. Check it out below and let me know what you think.

Build a Serverless “Hello World” Function

Serverless, Function as a Service (FaaS) or just cloud functions allows you to write code that will run in the cloud. You can use a number of different languages such as JavaScript (Node.js), Swift, Python, Java, PHP and others to write the function code.¬† What’s nice is that you don’t need to worry about servers, containers, deployment, etc. You write the code and a cloud platform will make sure it executes!

In this blog post you will learn how to build a¬†Hello World¬†function. You will use IBM Cloud Functions to build and run the function (more information about this at the end). For now, let’s jump to creating your first function.

Continue reading “Build a Serverless “Hello World” Function”

4-part Webinar Series: Containers, Docker, Kubernetes and Istio

Marek Sadowski and Maya Reyes from the IBM San Francisco City Team hosted a 4-part webinar series on Containers. They covered Containers, Docker, Kubernetes and Istio.  The sessions are short, about 30-minutes. Check out the recordings below.

  1. Introduction to Containers
  2. Introduction to Docker
  3. Introduction to Kubernetes
  4. Introduction to Istio

Check out our upcoming events on Blockchain, Machine Learning, Watson AI, Serverless and more.

How to Create a Cluster on the IBM Cloud to Run Containerized Applications

If you are planning to run containerized applications on the IBM Cloud, here are the steps to upgrade your account and create a cluster:

  1. Please register¬†for an IBM Cloud account (it’s free!). You can also login if you have an existing account
  2. Once you register, click on Catalog (top right menu)
  3. Remove the label:lite filter (the X top right on the ribbon above the menu)
  4. From the left-hand side menu, click on Containers
  5. Click on IBM Cloud Kubernetes Service
  6. In order to create a cluster click Upgrade and enter your billing information. Here is why you need to upgrade your account:
    1. Entering a credit card will activate a Lite (free) tier for Containers
    2. Your credit card will not be charged
    3. A credit card is needed to prevent fraud (such as using the cluster to do cryptocurrency mining)
    4. You will also get 512 Mb of memory
    5. $200 credit toward any paid services
    6. Continued access to the Lite plan
  7. Once your account is upgraded, select Free (Cluster type) and click Create Cluster
  8. The last step is to test your Docker installation
    1. Download or update Docker
    2. Run the following command to test the installation:
      $docker run ubuntu echo Hello World
    3. You should see Hello World text displayed in the terminal (after some initial downloads of Ubuntu images)
  9. Have fun ūüėé

If you want to learn how to build and deploy containerized applications in face-to-face hands-on sessions, you should come to one of our events.

Learn How to Convert Audio to Text

Converting speech or audio to text has a large number of applications and can bring advanced capabilities to applications.

Image you are running a call center with thousands of simultaneous calls. You would like to identify some trends/analytics such as if the callers are having problems with a particular product or feature. Or if the callers sound frustrated or unhappy about something.

You might also be looking for particular words in the conversation that are being repeated and also need to know the frequency. Being able to analyze such information is vital to businesses. For example, if you identified that callers sound frustrated and the word “broken” is repeated all the time – you can take actions to improve the user experience. First, you can quickly teach the support team how to help with this particular problem, offer a solution or a workaround. Second, you can fix or improve the product.

In general, almost any audio can be converted to text, where the text is then analyzed for trends, analytics that are important to you. One tool that you can use to analyze text is the Watson Tone Analyzer service.

Continue reading “Learn How to Convert Audio to Text”

How to Invoke the Watson Language Translator API from an Appery.io App

In this blog post you will learn how to invoke the Watson Language Translator API from an Appery.io app. Before you will learn how to do that, let me give you a quick overview of the Appery.io platform.

Appery.io is a cloud platform for building and running mobile web and hybrid apps. The platform provides the following major benefits:

  • A visual, drag and drop UI builder (based on jQuery Mobile, Ionic or Bootstrap)
  • A cloud database for storing app data.
  • Node.js-like environment (called Server Code) for running any custom app code (written in JavaScript).
  • API Express for connecting to any external/enterprise data sources such as a SQL database, web service or a REST API.
  • Sending Push Notifications.

If you are looking for more Appery.io content, simply look for posts tagged with Appery.io.

Appery.io makes it very easy to invoke any 3rd party REST APIs using Server Code or API Express. In this blog post you will learn how to invoke the Watson Language Translator API from Server Code. Let’s start.

Watson Language Translator API

In this section you will learn how to start with the IBM Cloud and launch the Watson Language Translator API. The Language Translator API allows to translate one language to another language. Other API features include detecting the what language was entered. To learn more about the API here.

Continue reading “How to Invoke the Watson Language Translator API from an Appery.io App”