Golang api

Simple api in golang using gin and docker.

initializing

Requirements:

• Golang
• Gin

Install the dependencies:

go mod tidy

Run the project:

go mod run main.go

Build the project:

go build main.go

./main

Using docker:

Build api image:

docker build -t go-basic-api .

Running container database:

docker-compose up -d go-basic-db

Running container api:

docker-compose up -d go-api-app

Listing containers:

docker container ls

Connecting to database;

docker exec -it go-basic-db psql -U postgres -d code043

psql (12.20 (Debian 12.20-1.pgdg120+1)) \
 Type "help" for help.

code043=#

Product table:

    create table product (
        id serial primary key,
        product_name varchar(50) not null,
        price numeric(10, 2) not null
    );

Create table:

psql (12.20 (Debian 12.20-1.pgdg120+1)) \
 Type "help" for help.

code043=#create table product (
             id serial primary key,
             product_name varchar(50) not null,
             price numeric(10, 2) not null
         );

Insert product:

 insert into product (product_name, price) values('Coffee', 20);

psql (12.20 (Debian 12.20-1.pgdg120+1)) \
 Type "help" for help.

code043=#insert into product (product_name, price) values('Coffee', 20);

Receiving logs:

docker logs -f go-api-app

Send request:

curl http://localhost:8000/products

output: [{"id_product":1,"name":"Coffee","price":20}]

Using Rest Client:

get http://localhost:8000/products

[
  {
    id_product: 1,
    name: "Coffee",
    price: 20,
  },
];

Resources:

• Vscode:

  • install: https://code.visualstudio.com/download

• Golang:

  • install: https://go.dev/doc/install

• Gin:

  • repo: https://github.com/gin-gonic/gin

• Docker:

  • install: https://docs.docker.com/get-started/get-docker/

• Rest Client:

  • install: https://marketplace.visualstudio.com/items?itemName=humao.rest-client