#Golang

12 Creating Dependecy Injection Library Google Wire

This time we will try to make Dependency Injection using the Wire Library from github.com/google/wire. The usefulness of this library is that we can make so many dependencies that we can generate directly concisely and easily.

11 Add Unit Tests Using Mockery

At this stage we will need the following dependencies

brew install mockery

go get github.com/stretchr/testify

go mod tidy

go mod vendor

go get github.com/DATA-DOG/go-sqlmock

In this project we will try to create unit tests using a mocking library with the name mockery. This library is widely used by golang developers because of its ease of use and has the advantage of features that can cover all the necessary unit tests. If you have used unit tests in golang, you may already know this library but if you want to get more references, Santekno has also provided previous posts including:

10 Adding Simple Authentication

At this stage we will try to add simple Authentication by using middleware in Golang. You need to know that middleware is the process of intercepting an API which before the service when accessed goes to the *handler * layer, it will pass through this * middleware * layer (which we will create) to capture and process something for certain needs. For example, in this case we will intercept the service process to see if the API has a header with the key condition X-API-Key.

09 Configuring HTTP Router, HTTP Server and Database Connection

At this stage we will create the main function of the project that we have created. In the main function we will add several function initializations which are used to initialize all the resources needed by the project such as database connections, handler initialization, usecases and repositories that we have previously created.

08 Adding a Request Validator Using Golang Playground

At this stage we will add validation for each request sent to the API Application on our Services for example on add, change and delete requests. The validation we use is package github.com/go-playground/validator.

07 Creating a Handler as a Data Delivery Layer

At this stage we will continue the project that we have created by creating a Delivery Layer. This layer as explained earlier is a layer that connects user requests with the logic layer.

06 Creating Usecases as Data Logic

This time we will continue the project of making this RESTFul API by creating a Usecase function. Previously it was discussed that this Usecase Layer will contain logic data or data processing which is used some logic needed in a process.

05 Creating a Repository as Access Data

This time we will create an Article Repository that needs to communicate to the MySQL database. We have a table in MySQL previously explained, then we will create functions that will be used for API specification needs. Here are the functions that we will like this

04 Implementing Clean Architecture on Project

At this stage we will try to implement Clean Architecture, where this concept according to Uncle Bob has 4 layers, namely

03 Creating a Database on MySQL Golang

At this stage we will try to create a database on MySQL in preparation for creating the table that we will also use later to create an API with the data in the database. Previously, if you didn’t have MySQL on a computer or laptop, prepare to install MySQL and the Database Editor first, you can use DBeaver, MySQL Workbench or what you usually use for database management.

Creating a Thumbnail Image Generator Using Pipeline Pattern

We also use Generate Image using Golang to make it easier for editors so they don’t need to edit using other applications so that we can easily put the desired image. Now santekno will try to create a Thumbnail Image generator that already exists in this tutorial. Suppose we want to make this thumbnail image more concise than the original image. Then we need to convert it into a lighter file with a small size. What if there are many images, then if we use the usual Golang sequencial, it will be long when we execute it. So, we will try to compare how the process of generating this Thumbnail image with sequential golang using concurrent Pipeline Patter.

Creating a Web Crawler using Golang

Web Crawlers are often used to retrieve something on a website so that we get the content we need. This is usually used for content needs. In this case we will try to use Golang to create a simple Web Crawler and will retrieve some content such as URLs on a website page.