In this tutorial, you will learn how to configure Keycloak to use the MySQL database server instead of the H2 database. Create MySQL Database for Keycloak To make the Keycloak store data in MySQL database, we will need to create a new MySQL database. Sign-in to MySQL server with a root user credentials and create…
Read More Keycloak: Configure MySQL DatabaseIn this tutorial, you will learn how to use the Keycloak REST API to create a new user for your application. There are a few ways you get to register a new user: You can create a new user using the Keycloak Web Administration Console, You can let users register a new account themselves, Or…
Read More Keycloak REST API: Create a New UserIn this tutorial, you will learn how to create an OAuth 2 scope in Keycloak. What is OAuth Scope? A scope is used by OAuth 2 to restrict access to a resource. When requesting an access token from an authorization server, a client application will include a scope request parameter specifying a list of scopes or…
Read More Creating OAuth 2 Scope in KeycloakIn this tutorial, you will learn how to implement a very simple OAuth2 Resource Server that will validate the JWT token it has earlier acquired from a Keycloak authorization server. I think tutorials I will not show how to acquire the JWT access token but if you are interested to learn how to do it,…
Read More OAuth 2 Resource Server and KeycloakIn this tutorial, you will learn how to get an access token from the Keycloak authorization server using the OAuth Authorization Code Grant flow. You should use this authorization flow only if your application support redirects. For example, if your application is a Web application or a mobile application, then this authorization grant flow is…
Read More Keycloak: Authorization Code Grant ExampleIn this tutorial, you will learn how to use a Password Grant OAuth 2 authorization flow to request an Access Token and a Refresh token from the Keycloak server by sending HTTP Post request to a /token web service endpoint. The Password Grant flow should only be used if your application does not support redirects. Otherwise,…
Read More Keycloak: Requesting Token with Password GrantIn this tutorial, you will learn how to create a new Keycloak authorization server user. To be able to follow this tutorial, you will need to have Keycloak installed and running. To learn how to download and install a standalone Keycloak server, please read the following tutorial first. Keycloak: Starting a Standalone Server, You might…
Read More Keycloak: Creating a New UserIn this tutorial, you will learn how to download and start up a standalone Keycloak server. The best place to look for a link to download Keycloak is of course its official site. For this tutorial, I will download a ZIP archive of the Keycloak standalone server. To learn how to create a new user…
Read More Keycloak: Starting Standalone ServerThere are different ways to test that the UIViewController has been successfully pushed onto the navigation stack and in this tutorial, I will cover a few of them. For this tutorial, I have created a simple project with two view controllers on the Main.storyboard. The very first view controller has a button. When the button…
Read More Test View Controller Push to Navigation ControllerBy default, Spring Boot RESTful Web service endpoints consume and produce JSON representation. But we can easily make our RESTful Spring Boot Web service endpoints consume and produce an XML representation of a resource as well. Add XML Support to Spring Boot Project To make our Spring Boot project consume and produce an XML representation…
Read More Consuming XML in Spring Boot RESTHATEOAS is a way to make your RESTful Web Service endpoint, automatically include links to other Resources of your API, in the response that it sends back to a calling client application. The client application that consumes your web service endpoint, can then use those links, to consume other RESTful Resources that your Web Service…
Read More Add HATEOAS to Spring Boot RESTful Web ServiceIn this blog post, I am going to share with you a way you can assign to your EC2 instance an AWS SES(Simple Email Service) Role. Assigning a new AWS SES Role to an EC2 instance will enable that EC2 instance to execute applications that programmatically consume the AWS SES resources. 1. Create a New…
Read More Assign IAM SES Role to EC2 InstanceIn this tutorial, I am going to share with you how to Unit Test some of the UITextField attributes in Swift. Learning how to Unit Test text field attributes covered in this blog post, should give you a good understanding of how to Uni Test other UITextField attributes. This blog post also contains video lessons.…
Read More Unit Testing Text Fields in SwiftThere are a few different ways to Unit test code that throws an Error in Swift and my preferred way is to use the XCTAssertThrowError and XCTAssertNoThrows. I will also share with you how to use the traditional way of handling an error with the do-try-catch. Error To Be Thrown Let’s assume that we have…
Read More Unit Testing Code That Throws Error in SwiftIn this tutorial, you will learn about different ways of accessing UI elements when writing UI Tests in Xcode. Let’s assume we have this view with a Signup form details on it. This view has 5 UITextFields and a single button. UIElement Groups Below is a list of UI elements groups that you can use…
Read More Accessing UI Elements in Xcode UI Test