78 lines
1.4 KiB
Go
78 lines
1.4 KiB
Go
package main
|
|
|
|
import (
|
|
"fmt"
|
|
"log"
|
|
"net/http"
|
|
"os"
|
|
|
|
"github.com/gin-gonic/gin"
|
|
)
|
|
|
|
const ADDRESS = "0.0.0.0"
|
|
const PORT = "3000"
|
|
const LOG_FILE = "./log/api-server.log"
|
|
|
|
var containerName string
|
|
|
|
type HelloResponseDto struct {
|
|
Message string `json:"message"`
|
|
}
|
|
|
|
func handleHello(ctx *gin.Context) {
|
|
log.Println("Request received to handleHello")
|
|
ctx.JSON(
|
|
http.StatusOK,
|
|
HelloResponseDto{
|
|
Message: fmt.Sprintf("Hello world from %s", containerName),
|
|
},
|
|
)
|
|
}
|
|
|
|
func openLogFile(path string) (*os.File, error) {
|
|
logFile, err := os.OpenFile(path, os.O_WRONLY|os.O_APPEND|os.O_CREATE, 0644)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
return logFile, nil
|
|
}
|
|
|
|
func initLogging() {
|
|
file, err := openLogFile(LOG_FILE)
|
|
if err != nil {
|
|
log.Fatal(err)
|
|
}
|
|
log.SetOutput(file)
|
|
log.SetFlags(log.LstdFlags | log.Lshortfile | log.Lmicroseconds)
|
|
}
|
|
|
|
func main() {
|
|
// get container name from environment
|
|
containerName = os.Getenv("CONTAINER_NAME")
|
|
if len(containerName) == 0 {
|
|
containerName = "Unknown"
|
|
}
|
|
|
|
// get port from environment
|
|
port := os.Getenv("PORT")
|
|
if len(port) == 0 {
|
|
port = PORT
|
|
}
|
|
|
|
initLogging()
|
|
|
|
serverAddr := fmt.Sprintf("%s:%s", ADDRESS, port)
|
|
|
|
// init gin
|
|
gin.SetMode(gin.ReleaseMode)
|
|
router := gin.Default()
|
|
router.GET("/hello", handleHello)
|
|
|
|
msg := fmt.Sprintf("Running server on %s as %s", serverAddr, containerName)
|
|
log.Println(msg)
|
|
fmt.Printf("%s\n", msg)
|
|
|
|
// finally, start server
|
|
router.Run(serverAddr)
|
|
}
|