Azure Functions with Swagger

13th of June, 2017 / / 4 Comments

Azure Functions Team has recently announced the Swagger support as a preview. If we use Azure Functions as APIs, this will be very useful. In this post, we will have a look how to enable Swagger support on Azure Functions.

Sample codes used for this post can be found here.

Sample Azure Functions Instance

First of all, with the sample code provided, we’re creating two HTTP triggers, CreateProduct and GetProduct. Once we deploy them, we can find it from the Azure Portal like:

Here are simple requests and responses through Postman:


Let’s create a Swagger definition document for those Functions.… [Keep reading] “Azure Functions with Swagger”

Tools for Testing Webhooks

7th of June, 2017 / / 2 Comments

In a microservices environment, APIs are the main communication methods between services. Most of time each API merely sends a request and wait for its response. But there are definitely cases that need longer period to complete the requests. Even some cases stop processing at some stage until they get a signal to continue. Those are not uncommon in the API world. However, implementing those features might be a little bit tricky because most APIs use HTTP protocol, which are basically web-based applications that have timeout constraints.… [Keep reading] “Tools for Testing Webhooks”

Notes for Logic Apps around Webhook Actions

31st of May, 2017 / / 2 Comments

Azure Logic Apps (Logic Apps) is one of serverless services that Azure is offering. Of course the other one in Azure is Azure Functions (Functions). Logic Apps consists of many connectors and triggers to interconnect services outside Azure. A webhook connector is one of them which has unique characteristics to the others. In this post, we are briefly looking at some tips we should know when we use webhook actions in a Logic Apps workflow.… [Keep reading] “Notes for Logic Apps around Webhook Actions”

API Mocking for Developers

18th of May, 2017 / / 2 Comments

API is the most common practice to exchange messages in a microservices architecture world. There are actually two different approaches for API development. One is called Model First and the other is called Design First. Usually the latter, AKA Spec-Driven Development (SDD), is preferred over the former.
When is the Model First approach useful? If you are running legacy API applications, this would be a good example of using this approach. If those systems are well documented, API documents can be easily extracted by tools like Swagger which is now renamed to Open API.… [Keep reading] “API Mocking for Developers”

Know Your Cloud Resource Costs on Azure

5th of May, 2017 / / No Comments

An organisation used to invest their IT infrastructure mostly for computers, network or data centre. Over time, they spent their budget for hosting spaces. Nowadays, in cloud environments, they mostly spend their funds to purchase computing power. Here’s a simple diagram about the cloud computing evolution. From left to right, expenditure shifts from infrastructure to computing power.

In the cloud environment, when we need resources, we just create and use them, and when we don’t need them any longer, we just delete them.… [Keep reading] “Know Your Cloud Resource Costs on Azure”

Precompiled Azure Functions Revisited

3rd of May, 2017 / / No Comments

Since Microsoft released a preview version of Visual Studio Tools for Azure Functions in December, 2016, it’s been reported very buggy. Current roadmap says the tooling won’t be unveiled until .NET Standard 2.0 is released. Therefore, Azure App Service Team published an article to utilise ASP.NET Web Application projects in the meantime. Even though the approach requires a lot of hands for initial setup, this is literally the only way to play Azure Functions on Visual Studio without the tooling.… [Keep reading] “Precompiled Azure Functions Revisited”

MuleSoft Anypoint Studio in High DPI Mode

5th of April, 2017 / / No Comments

MuleSoft‘s development platform, Anypoint Studio, is a great tool for service integration. However, if we’re using an OS that supports High DPI mode like Windows 10, its user experience is not quite nice.

Icons are barely recognisable! By the way, this is NOT the issue from the Anypoint Studio side. Rather, it’s the well-known issue that Eclipse has had so far at least since 2013. Anypoint Studio is built on top of Eclipse, so the same issue occurs here.… [Keep reading] “MuleSoft Anypoint Studio in High DPI Mode”

Performing OCR with Azure Cognitive Services and HTML5 Media Capture API

30th of March, 2017 / / No Comments

There are a few ways to access camera on mobile devices during application development. In our previous post, we used the getUserMedia API for camera access. Unfortunately, as of this writing, not all browsers support this API, so we should provide a fallback approach. On the other hand, HTML5 Media Capture API is backed by almost of all modern browsers, which we can utilise with ease. In this post, we’re going to use Vue.js, TypeScript and ASP.NET… [Keep reading] “Performing OCR with Azure Cognitive Services and HTML5 Media Capture API”

Dependency Injection in Vue.js App with TypeScript

22nd of March, 2017 / / No Comments

Dependency management is one of critical points while developing applications. In the back-end world, there are many IoC container libraries that we can make use of, like Autofac, Ninject, etc. Similarly, many modern front-end frameworks also provide DI features. However, those features work way differently from how back-end libraries do. In this post, we’re going to use TypeScript and Vue.js for development and apply an IoC container library called InversifyJS that offers very similar development experiences to back-end application development.… [Keep reading] “Dependency Injection in Vue.js App with TypeScript”

Accessing to Geolocation on Mobile Devices from ASP.NET Core Application in Vue.js and TypeScript

17th of March, 2017 / / No Comments

In the previous post, we used HTML5 getUserMedia() API to access camera on our mobile devices. In this post, we’re using geolocation data on our mobile devices.

The code samples used for this post can be found here.

navigator.geolocation API

Unlike getUserMedia() API, geolocation API has a great level of compatibility of almost all browsers.

Therefore, with a simple TypeScript code, we can easily use the geolocation data.

NOTE: In order to use the geolocation API, the device must be connected to the Internet.

… [Keep reading] “Accessing to Geolocation on Mobile Devices from ASP.NET Core Application in Vue.js and TypeScript”