Client-Server Golang

This code is a server written in Go language that consumes a JSON API to get the dollar-real exchange rate and stores it in a SQLite database. The server also has a simple endpoint that returns the current exchange rate.

Dependencies

"github.com/mattn/go-sqlite3" "context" "database/sql" "encoding/json" "fmt" "io/ioutil" "net/http" "time"

How it works

The code starts by opening a connection to a SQLite database using the "database/sql" package. The main function calls the "apiCotacao" function, which makes a GET request to an API endpoint to get the exchange rate and returns it as a struct. The "insertCotacao" function is called to store the exchange rate in the SQLite database. The code creates a simple HTTP endpoint that returns the current exchange rate when accessed. The server listens on port 8080.

Function Descriptions

"apiCotacao": This function makes a GET request to an API endpoint to get the exchange rate and returns it as a struct. "insertCotacao": function stores the exchange rate in the SQLite database. "main":is the entry point of the program. It opens a connection to the database, calls the "apiCotacao" and "insertCotacao" functions, creates an HTTP endpoint, and starts the server.

Note

The SQLite database and its table need to be set up before running the code. The API endpoint used in the code is "awesomeapi", which may not be available in the future.