An example of a CRUD api in Go
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package main
import (
"flag"
"fmt"
"log"
"net/http"
"time"
dbhandle "github.com/Unbewohnte/crud-api/dbHandle"
"github.com/Unbewohnte/crud-api/logs"
)
var (
port *uint = flag.Uint("port", 8000, "Specifies a port on which the helping page will be served")
dbname string = "database.db"
tableName string = "randomdata"
)
func init() {
// set up logs, parse flags
err := logs.SetUp()
if err != nil {
panic(err)
}
flag.Parse()
}
func main() {
// create a local db file
db, err := dbhandle.CreateLocalDB(dbname, tableName)
if err != nil {
log.Fatalf("error setting up a database: %s", err)
}
log.Printf("Created %s db\n", tableName)
// set up patterns and handlers
mux := http.NewServeMux()
mux.HandleFunc("/", helpPage)
mux.HandleFunc("/randomdata", db.HandleGlobalWeb)
mux.HandleFunc("/randomdata/", db.HandleSpecificWeb)
server := &http.Server{
Addr: fmt.Sprintf(":%d", *port),
Handler: mux,
ReadTimeout: 5 * time.Second,
WriteTimeout: 5 * time.Second,
}
log.Printf("Starting on port %d\n", *port)
fmt.Printf("Starting on port %d\n", *port)
log.Fatal(server.ListenAndServe())
}
func helpPage(w http.ResponseWriter, r *http.Request) {
helpMessage := `
<h1>CRUD api</h1>
<ul>
<li> (GET) <a href="/randomdata">/randomdata</a> - to get all info from database (obviously a bad idea in serious projects ᗜˬᗜ) </li>
<li> (GET) /randomdata/{id} - to get specific random data under corresponding id </li>
<li> (POST) /randomdata - to create random data </li>
<li> (DELETE) /randomdata/{id} - to delete specified random data </li>
<li> (PUT) /randomdata/{id} - to update random data with given id </li>
</ul>
`
fmt.Fprint(w, helpMessage)
}